- Peociloplax, syn of: Genus Chiton C. Linnaeus, 1758 (CHITONIDAE)
- Peonza, Genus Peonza Olivera , 1994 † (NYSTIELLIDAE) (FOSSIL)
- peoriense, Pseudozygopleura peoriense (A.H. Worthen, 1884 †) - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- peoriense, Oxyloma peoriense A.J.C. Wolf, 1894 - (SUCCINEIDAE)
- peoriensis, Holopea peoriensis A.H. Worthen, 1884 † - syn of: Pseudozygopleura peoriense (A.H. Worthen, 1884 †) - (HOLOPEIDAE) (FOSSIL)
- peoriensis, Porcellia peoriensis A.H. Worthen, 1884 † - syn of: Ambozone peoriensis (A.H. Worthen, 1884 †) - (PORCELLIIDAE) (FOSSIL)
- peoriensis, Ambozone peoriensis (A.H. Worthen, 1884 †) - (TURBINIDAE) (FOSSIL)
- Peotoconus, Genus Peotoconus † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- pepefragai, Volvarina pepefragai J. Espinosa & J.A. Ortea, 1997 - (MARGINELLIDAE)
- pepeiu, Conasprella pepeiu (R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008) - (CONIDAE)
- pepeiu, Bathyconus pepeiu R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008 - syn of: Conasprella pepeiu (R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008) - (CONIDAE)
- pepelajevi, Parayakutoceras pepelajevi A.M. Popov, 1970 † - (ORULGANITIDAE) (FOSSIL)
- pepezamorai, Leptochiton pepezamorai Zalvide & al., 2004 - (LEPTOCHITONIDAE)
- pepinianus, Unio pepinianus I. Lea, 1838 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- pepita, Marinula pepita P.P. King, 1832 - (ELLOBIIDAE)
- Peplidia, syn of: Genus Plocamopherus F.S. Leuckart, 1928 (POLYCERIDAE)
- peplum, Conus peplum G.B. II Sowerby, 1857 - syn of: Conus araneosus J. Lightfoot, 1786 - (CONIDAE)
- Peplum, syn of: Genus Pseudamussium O.A.L. Mörch, 1853 (PECTINIDAE)
- pepo, Cymbium pepo (J. Lightfoot, 1786) - (VOLUTIDAE)
- peponum, Lamellidea peponum (A.A. Gould, 1847) - (ACHATINELLIDAE)
- peponum, Pupa peponum A.A. Gould, 1847 - syn of: Lamellidea peponum (A.A. Gould, 1847) - (ACTEONIDAE)
- pepperi, Strophiops pepperi P. Bartsch, 1913 - (CERIONIDAE)
- pepratxi, Ostrea stentina pepratxi M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - (OSTREIDAE)
- Pepta, Genus Pepta T. Iredale, 1925 (CANCELLARIIDAE)
- pequenita, Sincola pequenita (E.S. Marks, 1951 †) - (COLUMBELLIDAE) (FOSSIL)
- pequenoensis, Spiralix pequenoensis H.D. Boeters, 2003 - (MOITESSIERIIDAE)
- pequensis, Turbonilla pequensis W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- pequignoti, Corbicula pequignoti P.M. Pallary, 1901 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- pequignoti major, Corbicula pequignoti major P.M. Pallary, 1901 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- pequignoti mauritanica, Corbicula pequignoti mauritanica P.M. Pallary, 1901 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- Peracle, Genus Peracle E. Forbes, 1844 (PERACLIDAE)
- PERACLIDAE Tesch, 1913 - Family (GASTROPODA-HETEROBRANCHIA-OPISTHOBRANCHIA-THECOSOMATA)
- Peraclis, syn of: Genus Peracle E. Forbes, 1844 (PERACLIDAE)
- peracuta, Discotectonica peracuta W.H. Dall, 1889 - syn of: Discotectonica discus (R.A. Philippi, 1844) - (ARCHITECTONICIDAE)
- peracuta, Bucania peracuta Ulrich & Scofield, 1897 † - (BUCANIIDAE) (FOSSIL)
- peracuta, Omphaloptycha peracuta (Stoppani, 1857 †) - (COELOSTYLINIDAE) (FOSSIL)
- peracuta, Ctenodonta peracuta W.J. Raymond, 1905 † - (CTENODONTIDAE) (FOSSIL)
- peracuta, Cirsotrema peracuta A. von Koenen, 1891 - syn of: Cirsotrema subregularis A. von Koenen, 1891 † - (EPITONIIDAE)
- peracuta, Eulima peracuta K.H.J. Thiele, 1925 - (EULIMIDAE)
- peracuta, Cincinnatia peracuta (H.A. Pilsbry & B. Walker, 1889) - (HYDROBIIDAE)
- peracuta, Paupospira peracuta Ulrich & Scofield, 1897 † - syn of: Paupospira burginensis (Ulrich & Scofield, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- peracuta, Meekospira peracuta (F.B. Meek & A.H. Worthen, 1860 †) - (MEEKOSPIRIDAE) (FOSSIL)
- peracuta, Aviculopinna peracuta (Shumard & Swallow, 1858 †) - (PINNIDAE) (FOSSIL)
- peracuta, Pleurodonte peracuta H. Vendryes, 1902 - syn of: Pleurodonte soror (A.E.J. Férussac, 1821) - (PLEURODONTIDAE)
- peracuta, Ringicula peracuta R.B. Watson, 1883 - syn of: Ringicula nitida A.E. Verrill, 1872 - (RINGICULIDAE)
- peracuta, Alvania peracuta E.A.L. Kittl, 1899 † - (RISSOIDAE) (FOSSIL)
- peracuta, Polyphemopsis peracuta F.B. Meek & A.H. Worthen, 1860 † - syn of: Meekospira peracuta (F.B. Meek & A.H. Worthen, 1860 †) - (SUBULITIDAE) (FOSSIL)
- peracutissimus, Pleurodonte peracutissimus C.B. Adams, 1845 - (PLEURODONTIDAE)
- peracutum, Cerion peracutum W.J. Clench & C.G. Aguayo, 1951 - (CERIONIDAE)
- peracutum, Scalites peracutum Ulrich & Scofield, 1897 † - (RAPHISTOMATIDAE) (FOSSIL)
- peracutum, Epitornoceras peracutum (J.W. Hall, 1876 †) - (TORNOCERATIDAE) (FOSSIL)
- peracutum, Voehringerites peracutum (Vohringer, 1960 †) - (VOEHRINGERITIDAE) (FOSSIL)
- peracutum jaumei, Cerion peracutum jaumei W.J. Clench & C.G. Aguayo, 1953 - (CERIONIDAE)
- peracutus, Colus peracutus A.E.M. Cossmann, 1898 † - (BUCCINIDAE) (FOSSIL)
- peracutus, Goniatites peracutus J.W. Hall, 1876 † - syn of: Epitornoceras peracutum (J.W. Hall, 1876 †) - (GONIATITIDAE) (FOSSIL)
- peradmirabilis, Drillia peradmirabilis E.A. Smith, 1879 - syn of: Asperdaphne peradmirabilis (E.A. Smith, 1879) - (DRILLIIDAE)
- peradmirabilis, Asperdaphne peradmirabilis (E.A. Smith, 1879) - (RAPHITOMIDAE)
- peradmirabilis bulbosa, Asperdaphne peradmirabilis bulbosa T. Shuto, 1965 - (RAPHITOMIDAE)
- peraeformis, Diplodon peraeformis I. Lea, 1860 - syn of: Rhipidodonta charruana peraeformis (I. Lea, 1860) - (HYRIIDAE)
- peraeformis, Rhipidodonta charruana peraeformis (I. Lea, 1860) - (HYRIIDAE)
- peraeformis, Unio peraeformis I. Lea, 1860 - syn of: Rhipidodonta charruana peraeformis (I. Lea, 1860) - (UNIONIDAE)
- peraequa, Chemnitzia peraequa (H.A. Pilsbry & Johnson, 1917 †) - (PYRAMIDELLIDAE) (FOSSIL)
- peraffinis, Cyclotus taivanus peraffinis H.A. Pilsbry & Y. Hirase, 1905 - (CYCLOPHORIDAE)
- peraffinis, Eucithara cinnamomea peraffinis H.A. Pilsbry, 1904 - (MANGELIIDAE)
- peraffinis, Stauroglypta peraffinis (C.B. Adams, 1845) - (SAGDIDAE)
- peraffinis, Pycnoptychia peraffinis (H.A. Pilsbry, 1903) - (UROCOPTIDAE)
- Perahua, Genus Perahua C.M. Cooke & Y. Kondo, 1960 (ACHATINELLIDAE)
- perahuensis, Opanara perahuensis G.A. Solem, 1976 - (ENDODONTIDAE)
- perakensis, Shikamaia perakensis Runnegar & Gobbett, 1975 † - (ALATOCONCHIDAE) (FOSSIL)
- perakensis, Ampullaria perakensis J.J.M. de Morgan, 1885 - syn of: Pila scutata (A. Mousson, 1848) - (AMPULLARIIDAE)
- perakensis, Ganesella acris perakensis (J.C.H. Crosse, 1879) - (CAMAENIDAE)
- perakensis, Amphidromus atricallosus perakensis H.C. Fulton, 1901 - (CAMAENIDAE)
- perakensis, Alycaeus perakensis J.C.H. Crosse, 1879 - (CYCLOPHORIDAE)
- perakensis, Geotrochus perakensis J.C.H. Crosse, 1879 - syn of: Ganesella acris perakensis (J.C.H. Crosse, 1879) - (HELICARIONIDAE)
- perakensis, Helix perakensis J.C.H. Crosse, 1879 - syn of: Ganesella acris perakensis (J.C.H. Crosse, 1879) - (HELICIDAE)
- perakensis, Raphaulus perakensis E.A. Smith, 1898 - (PUPINIDAE)
- perakensis, Plicaxis perakensis (J.J.M. de Morgan, 1855) - (SUBULINIDAE)
- perakensis, Sermyla perakensis J.J.M. de Morgan, 1885 - syn of: Brotia costula (C.S. Rafinesque, 1833) - (THIARIDAE)
- perakensis, Unio perakensis J.J.M. de Morgan, 1885 - syn of: Rectidens sumatrensis (R.W. Dunker, 1852) - (UNIONIDAE)
- perakensis altispirus, Alycaeus perakensis altispirus O.F. von Möllendorff, 1902 - (CYCLOPHORIDAE)
- perakensis jalorensis, Raphaulus perakensis jalorensis E.R. Sykes, 1903 - (PUPINIDAE)
- peralata, Aporrhais peralata (F. Sacco, 1893 †) - (APORRHAIDAE) (FOSSIL)
- peralta, Bakevellia peralta H. Guo, 1985 † - (BAKEVELLIIDAE) (FOSSIL)
- peralta, Ilyanassa peralta (T.A. Conrad, 1868 †) - (NASSARIIDAE) (FOSSIL)
- peralta, Tritiaria peralta T.A. Conrad, 1868 † - syn of: Ilyanassa peralta (T.A. Conrad, 1868 †) - (NASSARIIDAE) (FOSSIL)
- peralta, Periploma peralta T.A. Conrad, 1863 † - (PERIPLOMATIDAE) (FOSSIL)
- peralta, Dosinia peralta E.W. Vredenburg, 1928 † - (VENERIDAE) (FOSSIL)
- peraltai, Eopaquiericeras peraltai Cantu-Chapa, 2006 † - (PLATYLENTICERATIDAE) (FOSSIL)
- peraltoides, Nassa peraltoides Martin, 1904 † - (MURICIDAE) (FOSSIL)
- peraltum, Trochonema peraltum E.F.R.K. Koken, 1897 † - (TROCHONEMATIDAE) (FOSSIL)
- peralveatum, Calliostoma peralveatum T.A. Conrad, 1841 † - (CALLIOSTOMATIDAE) (FOSSIL)
- peramabile, Microcardium peramabile (W.H. Dall, 1881) - (CARDIIDAE)
- peramabilis, Solariella peramabilis P.P. Carpenter, 1864 - (SOLARIELLIDAE)
- peramabilis tinctum, Microcardium peramabilis tinctum W.H. Dall, 1881 - syn of: Microcardium tinctum (W.H. Dall, 1881) - (CARDIIDAE)
- peramoena, Elaphroconcha floresiana peramoena (E.A. Smith, 1899) - (ARIOPHANTIDAE)
- perampla, Ampelita perampla P. Dautzenberg, 1907 - (ACAVIDAE)
- perampla, Sigapatella perampla (Powell & J.A. Bartrum, 1929 †) - (CALYPTRAEIDAE) (FOSSIL)
- perampla, Crossostoma perampla Uhlig, 1881 † - (LIOTIIDAE) (FOSSIL)
- perampla, Rhytida meesoni perampla A.W.B. Powell, 1946 - (RHYTIDIDAE)
- Perampliata, Genus Perampliata Arkell, 1936 † (LUCINIDAE) (FOSSIL)
- peramplum, Stylonema peramplum J. Perner, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- peramplum, Lewesiceras peramplum (Mantell, 1822 †) - (PACHYDISCIDAE) (FOSSIL)
- perana, Cellana radians perana A.W.B. Powell, 1979 - (NACELLIDAE)
- perangulata, Aegista friedeliana perangulata H.A. Pilsbry & Y. Hirase, 1909 - (BRADYBAENIDAE)
- perangulata, Clathurella perangulata R.P.J. Hervier, 1897 - syn of: Mangelia orophoma J.C. Melvill & R. Standen, 1896 - (CLATHURELLIDAE)
- perangulata, Ctenodonta perangulata Reed, 1952 † - (CTENODONTIDAE) (FOSSIL)
- perangulata, Lophospira perangulata (J.W. Hall, 1847 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perangulata, Ziba goniophora perangulata M.A. Peyrot, 1925 † - (MITRIDAE) (FOSSIL)
- perangulata, Exomilus perangulata R.P.J. Hervier, 1897 - syn of: Mangelia orophoma J.C. Melvill & R. Standen, 1896 - (RAPHITOMIDAE)
- perangulatus, Ceratostoma perangulatus (Nomland, 1916 †) - (MURICIDAE) (FOSSIL)
- perangusta, Pandora perangusta H.B. Preston, 1910 - (PANDORIDAE)
- perangusta, Eulimella perangusta A. Gaglini, 1992 - (PYRAMIDELLIDAE)
- perangustum, Diastoma perangustum A.E.M. Cossmann & G. Pissarro † - (DIASTOMATIDAE) (FOSSIL)
- perangustum, Epitonium perangustum (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- perannulatum, Endoceras perannulatum (Portlock, 1843 †) - (ENDOCERATIDAE) (FOSSIL)
- perannulatum, Endocycloceras perannulatum Ulrich & al., 1944 † - (PROTOCYCLOCERATIDAE) (FOSSIL)
- perantiqua, Partulina dubia perantiqua C.M. Cooke & Y. Kondo, 1952 - (ACHATINELLIDAE)
- Perapecten, syn of: Genus Aequipecten P. Fischer, 1886 (PECTINIDAE)
- peraperata, Aegista friedeliana peraperata H.A. Pilsbry & Y. Hirase, 1903 - (BRADYBAENIDAE)
- perarata, Paranenia perarata (E.C. Von Martens, 1873) - (CLAUSILIIDAE)
- peraratus, Hemiconus peraratus A.E.M. Cossmann, 1896 † - (CONIDAE) (FOSSIL)
- perarcta, Chersaecia perarcta (W.T. Blanford, 1865) - (PLECTOPYLIDAE)
- perardua, Naudedrillia perardua R.N. Kilburn, 1988 - (PSEUDOMELATOMIDAE)
- perarmata, Boeseites perarmata F. Haas, 1942 † - (BRANCOCERATIDAE) (FOSSIL)
- perarmata, Trochita perarmata T.A. Conrad, 1841 † - syn of: Trochita aperta (D.C. Solander, 1766 †) - (CALYPTRAEIDAE) (FOSSIL)
- perarmata, Promathildia perarmata (Münster, 1841 †) - (GORDENELLIDAE) (FOSSIL)
- perarmata, Turritella perarmata Münster, 1841 † - syn of: Promathildia perarmata (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- perarmatum, Anisoceras perarmatum Pictet & Campiche, 1861 † - (ANISOCERATIDAE) (FOSSIL)
- perarmatum, Euaspidoceras perarmatum (Sowerby, 1822 †) - (ASPIDOCERATIDAE) (FOSSIL)
- perarmatum, Peronoceras perarmatum (A.T. Young & Bird, 1822 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- perarmatum, Mojsvaroceras perarmatum (Mojsisovics, 1873 †) - (TAINOCERATIDAE) (FOSSIL)
- perarmatus, Tyrsoecus perarmatus Bonarelli, 1921 † - syn of: Tyrsoecus andinus Bonarelli, 1921 † - (LOXONEMATIDAE) (FOSSIL)
- perarmatus, Nautilus perarmatus Mojsisovics, 1873 † - syn of: Mojsvaroceras perarmatum (Mojsisovics, 1873 †) - (NAUTILIDAE) (FOSSIL)
- peraspera, Gemmula peraspera J. Marwick, 1931 † - (TURRIDAE) (FOSSIL)
- perata, Nassarina perata A.M. Keen, 1971 - (COLUMBELLIDAE)
- Peratobelus, Genus Peratobelus Whitehouse, 1924 † (BELEMNITIDA (unassigned)) (FOSSIL)
- Peratoma, syn of: Genus Raphitoma L.M.D. Bellardi, 1847 (RAPHITOMIDAE)
- peratoptera, Onychoteuthis peratoptera A.E.J. Férussac in A.E.J. Férussac & D'Orbigny, 1834 - (ONYCHOTEUTHIDAE)
- Peratotoma, Genus Peratotoma Harris & Burrows, 1891 † (TURRIDAE) (FOSSIL)
- peratratum, Cerithium peratratum A.A. Olsson & A. Harbison, 1953 - syn of: Cerithium atratum (I. von Born, 1778) - (CERITHIIDAE)
- perattenuata, Mangelia perattenuata (W.H. Dall, 1905) - (MANGELIIDAE)
- perattenuata, Septimyalina perattenuata (F.B. Meek & Hayden, 1858 †) - (MYALINIDAE) (FOSSIL)
- perattenuata, Hyphantozyga perattenuata Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- perattenuata, Bactrospira perattenuata (A. Heilprin, 1886 †) - (TURRITELLIDAE) (FOSSIL)
- perattenuata praecellens, Bactrospira perattenuata praecellens (H.A. Pilsbry & J. Brown, 1917 †) - (TURRITELLIDAE) (FOSSIL)
- peratus, Phyllonotus peratus A.M. Keen, 1960 - (MURICIDAE)
- peratus decorus, Phyllonotus peratus decorus A.M. Keen, 1960 - (MURICIDAE)
- Peraubium, Genus Peraubium Dominici & Kowalke, 2014 † (CERITHIIDAE) (FOSSIL)
- perauctum, Pinacoceras perauctum Mojsisovics, 1873 † - syn of: Placites perauctus (Mojsisovics, 1873 †) - (PINACOCERATIDAE) (FOSSIL)
- perauctus, Placites perauctus (Mojsisovics, 1873 †) - (GYMNITIDAE) (FOSSIL)
- peraudieri, Ancylus peraudieri J.R. Bourguignat, 1862 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- perayense, Parataxioceras perayense (Atrops †) - (PERISPHINCTIDAE) (FOSSIL)
- perbrevis, Limopsis perbrevis B. Wade, 1926 † - (LIMOPSIDAE) (FOSSIL)
- perbrevis, Pitar perbrevis (T.A. Conrad, 1848 †) - (VENERIDAE) (FOSSIL)
- Perbullina, syn of: Genus Bullina A.E.J. Férussac, 1822 (BULLINIDAE)
- perca, Cuthona perca (Er. Marcus, 1958) - (FIONIDAE)
- perca, Biplex perca (G. Perry, 1811) - (RANELLIDAE)
- perca, Biplex perca H.G. Richards, 1933 - syn of: Biplex perca (G. Perry, 1811) - (RANELLIDAE)
- perca, Gyrineum perca G. Perry, 1811 - syn of: Biplex perca (G. Perry, 1811) - (RANELLIDAE)
- perca aculeata, Biplex perca aculeata M.M. Schepman, 1909 - syn of: Biplex aculeata (M.M. Schepman, 1909) - (RANELLIDAE)
- perca bozzettii, Biplex perca bozzettii A.G. Beu, 1998 - syn of: Biplex bozzettii A.G. Beu, 1998 - (RANELLIDAE)
- perca edgerleyi, Gyrineum perca edgerleyi H.G. Richards, 1933 - syn of: Biplex perca (G. Perry, 1811) - (RANELLIDAE)
- perca edgerleyi, Biplex perca edgerleyi H.G. Richards, 1933 - syn of: Biplex perca (G. Perry, 1811) - (RANELLIDAE)
- percallosus, Ventridens percallosus H.A. Pilsbry, 1898 - (GASTRODONTIDAE)
- percancellata, Narvaliscala percancellata (T. Nakayama, 2000) - (EPITONIIDAE)
- percandidus, Drymaeus poecilus percandidus W.H. Dall, 1912 - (BULIMULIDAE)
- percarinata, Mytilarca percarinata R.P. Whitfield, 1882 † - (AMBONYCHIIDAE) (FOSSIL)
- percarinata, Melanopsis percarinata P.M. Pallary, 1918 - (MELANOPSIDAE)
- percarinata, Radiocentrum chiricahuanum percarinata H.A. Pilsbry & J.H. Ferriss, 1910 - (OREOHELICIDAE)
- percarinata, Hypergonia percarinata Longst, 1926 † - (ORTHONEMIDAE) (FOSSIL)
- percarinata, Pholadomya percarinata Gillieron, 1886 † - (PHOLADOMYIDAE) (FOSSIL)
- percarinata, Cyclonema percarinata (J.W. Hall, 1847 †) - (PLATYCERATIDAE) (FOSSIL)
- percarinata, Taranis percarinata A.W.B. Powell, 1967 - (RAPHITOMIDAE)
- percarinata, Turritella beyrichi percarinata T. Roth, 1914 - (TURRITELLIDAE)
- percarinata, Paradmete percarinata A.W.B. Powell, 1951 - (VOLUTOMITRIDAE)
- percarinatum, Collignoniceras percarinatum (J.W. Hall & F.B. Meek, 1856 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- percarinatum, Teinostoma percarinatum H.A. Pilsbry & A.A. Olsson, 1945 - (TORNIDAE)
- percarinatum, Trochonema percarinatum J.W. Hall, 1847 † - syn of: Cyclonema percarinata (J.W. Hall, 1847 †) - (TROCHONEMATIDAE) (FOSSIL)
- percarinatus, Pharkidonotus percarinatus (T.A. Conrad, 1842 †) - (BELLEROPHONTIDAE) (FOSSIL)
- percarinatus, Theodoxus percarinatus (P. Oppenheim, 1919 †) - (NERITIDAE) (FOSSIL)
- percarinatus, Gyraulus percarinatus W.L. Paraense, 2000 - (PLANORBIDAE)
- percarus, Argopecten percarus L.G. Hertlein, 1925 † - (PECTINIDAE) (FOSSIL)
- percea, Siphonaria percea (T. Iredale, 1940) - (SIPHONARIIDAE)
- percea, Spondylus percea T. Iredale, 1939 - syn of: Spondylus nicobaricus K. Schreibers, 1793 - (SPONDYLIDAE)
- perceense, Platyostoma perceense A.H. Clarke, 1908 † - (PLATYCERATIDAE) (FOSSIL)
- perceptum, Dentalium perceptum J.F. Mabille & A. de Rochebrune, 1889 - syn of: Rhabdus perceptus (J.F. Mabille & A. de Rochebrune, 1889) - (DENTALIIDAE)
- perceptus, Rhabdus perceptus (J.F. Mabille & A. de Rochebrune, 1889) - (RHABDIDAE)
- percevali, Paraspiticeras percevali (Uhlig, 1883 †) - (EMERICICERATIDAE) (FOSSIL)
- percevali, Conotomaria percevali Cox, 1960 † - (PLEUROTOMARIIDAE) (FOSSIL)
- percha, Ellobium percha B. Prashad, 1921 - syn of: Ellobium aurisjudae (C. Linnaeus, 1758) - (ELLOBIIDAE)
- perchardei, Typhis perchardei G.E. Radwin & D'Attilio, 1976 - syn of: Typhina expansa (G.B. II Sowerby, 1874) - (MURICIDAE)
- perchloris, Naesiotus nux perchloris W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- perchtae, Urticicola perchtae R.B. Salvador, 2013 † - (HYGROMIIDAE) (FOSSIL)
- percinatum, Centrocyrtoceras percinatum Foerste, 1933 † - (BARRANDOCERATIDAE) (FOSSIL)
- percincta, Pseudomelania percincta Hudleston † - (PSEUDOMELANIIDAE) (FOSSIL)
- percinctum, Temnospira percinctum J. Perner, 1903 † - (CRASPEDOSTOMATIDAE) (FOSSIL)
- percingulata, Turritella bicarinata percingulata ErünalErentöz, 1958 † - (TURRITELLIDAE) (FOSSIL)
- percingulatum, Cyclonema percingulatum Billings, 1857 † - (PLATYCERATIDAE) (FOSSIL)
- percirrata, Lucinoma percirrata (B.C. Cotton & F.C. Godfrey, 1938) - (LUCINIDAE)
- percita, Amplirhagada percita T. Iredale, 1939 - (CAMAENIDAE)
- percitrea, Orobophana uberta percitrea M.C. Neal, 1934 - (HELICINIDAE)
- percivali, Halolimnohelix percivali H.B. Preston, 1913 - syn of: Gonaxis percivali (H.B. Preston, 1913) - (HALOLIMNOHELICIDAE)
- percivali, Gonaxis percivali (H.B. Preston, 1913) - (STREPTAXIDAE)
- Percivalia, Subgenus Trochonanina (Percivalia) H.B. Preston, 1914 (UROCYCLIDAE)
- perclarus, Leptotrophon perclarus R. Houart, 2001 - (MURICIDAE)
- perclathrata, Tryonia perclathrata K. Sakurai, 1983 - (COCHLIOPIDAE)
- perclathrata, Conradia perclathrata K. Sakurai, 1983 - (CROSSEOLIDAE)
- perclathrata, Inquisitor perclathrata J.T. Kuroda, 1960 - (PSEUDOMELATOMIDAE)
- percnodictyum, Vexillum percnodictyum (J.C. Melvill, 1888) - (COSTELLARIIDAE)
- percnodictyum cerithinum, Vexillum percnodictyum cerithinum (J.C. Melvill, 1888) - (COSTELLARIIDAE)
- percoarctatus, Unio percoarctatus I. Lea, 1857 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- percoides, Murex percoides C.H.W.T. Löbbecke, 1879 - syn of: Siratus beauii (P. Fischer & A.C. Bernardi, 1857) - (MURICIDAE)
- percomis, Erosaria percomis T. Iredale, 1931 - syn of: Erosaria cernica (G.B. III Sowerby, 1870) - (CYPRAEIDAE)
- percompacta, Mangelia percompacta W.H. Dall, 1927 - syn of: Azorilla megalembryon (P. Dautzenberg & H. Fischer, 1896) - (MANGELIIDAE)
- percompacta, Pleurotoma percompacta W.H. Dall, 1927 - syn of: Azorilla megalembryon (P. Dautzenberg & H. Fischer, 1896) - (TURRIDAE)
- percompressa, Corbula percompressa Gardner, 1916 † - (CORBULIDAE) (FOSSIL)
- percompressa, Montacuta percompressa W.H. Dall, 1899 - (MONTACUTIDAE)
- percompressa, Pteria percompressa B. Wade, 1926 † - (PTERIIDAE) (FOSSIL)
- percompressa, Psorula percompressa (E.C. Von Martens, 1887) - (UNIONIDAE)
- perconfusa, Isabellaria confusa perconfusa H. Nordsieck, 2007 - (CLAUSILIIDAE)
- perconfusa, Mauritia perconfusa T. Iredale, 1935 - syn of: Mauritia eglantina (P.L. Duclos, 1833) - (CYPRAEIDAE)
- perconfusa, Leptomya perconfusa T. Iredale, 1915 - syn of: Leptomya retiaria (F.W. Hutton, 1885) - (SEMELIDAE)
- perconfusa, Trochinella perconfusa T. Iredale, 1937 - syn of: Calliotrochus marmoreus (W.H. Pease, 1861) - (TROCHIDAE)
- perconica, Patelloida perconica (H.B. Preston, 1913) - (LOTTIIDAE)
- perconica, Microglyphis perconica (W.H. Dall, 1890) - (RINGICULIDAE)
- perconica, Cossmannia expansa perconica A.E.M. Cossmann, 1907 † - (ZEBINIDAE) (FOSSIL)
- perconicus, Actaeon perconicus W.H. Dall, 1890 - syn of: Microglyphis perconica (W.H. Dall, 1890) - (ACTEONIDAE)
- perconicus, Microceramus perconicus H.A. Pilsbry, 1904 - syn of: Microceramus petitianus perconicus (H.A. Pilsbry, 1904) - (UROCOPTIDAE)
- perconicus, Microceramus petitianus perconicus (H.A. Pilsbry, 1904) - (UROCOPTIDAE)
- perconvexa, Parreysia perconvexa H.B. Preston, 1912 - (UNIONIDAE)
- perconvexum, Farcimen ungula perconvexum C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- percostata, Phaedusa percostata H. Nordsieck, 2016 - (CLAUSILIIDAE)
- percostata, Taosia percostata Girty, 1939 † - syn of: Hypergonia marvinwelleri Thein & Nitecki, 1974 † - (GONIASMATIDAE) (FOSSIL)
- percostata, Bathycorbis percostata (C. Hedley, 1904 †) - (LUCINIDAE) (FOSSIL)
- percostata, Hypergonia percostata Girty, 1939 † - (ORTHONEMIDAE) (FOSSIL)
- percostata, Plocezyga percostata Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- percostata, Torrecoptis percostata C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- percostata, Lyropupa micra percostata H.A. Pilsbry & C.M. Cooke, 1920 - (VERTIGINIDAE)
- percostatum, Tropaeum percostatum (W.M. Gabb, 1864 †) - (ANCYLOCERATIDAE) (FOSSIL)
- percostatum, Cerion regina percostatum H.A. Pilsbry & E.G. Vanatta, 1895 - (CERIONIDAE)
- percostatum, Faberoceras percostatum Flower, 1946 † - (WESTONOCERATIDAE) (FOSSIL)
- percostatus, Crioceras percostatus W.M. Gabb, 1864 † - syn of: Tropaeum percostatum (W.M. Gabb, 1864 †) - (CRIOCERATITIDAE) (FOSSIL)
- percosticillata, Rissoina percosticillata F. Sacco, 1893 † - (RISSOINIDAE) (FOSSIL)
- percrassa, Pycnodonte percrassa (T.A. Conrad, 1840 †) - (GRYPHAEIDAE) (FOSSIL)
- percrassa, Emoda sagraiana percrassa C.G. Aguayo & M.L. Jaume, 1954 - (HELICINIDAE)
- percrassa, Oldroydia percrassa (W.H. Dall, 1894) - (LEPTOCHITONIDAE)
- percrassa, Nassa percrassa J. Giner Mari, 1934 - syn of: Nassarius semisulcatus (J.B. Hombron & C.H. Jacquinot, 1848) - (NASSARIIDAE)
- percrassa, Nucula percrassa T.A. Conrad, 1856 † - (NUCULIDAE) (FOSSIL)
- percrassa, Ostrea percrassa T.A. Conrad, 1840 † - syn of: Pycnodonte percrassa (T.A. Conrad, 1840 †) - (OSTREIDAE) (FOSSIL)
- percrassa, Chondrothyra percrassa (B.H. Wright in L. Pfeiffer, 1864) - (POMATIIDAE)
- percrassa, Rissoina percrassa (G. Nevill & H. Nevill, 1874) - (RISSOINIDAE)
- percrassa, Pachyrissoina percrassa G. Nevill & H. Nevill, 1874 - syn of: Rissoina percrassa (G. Nevill & H. Nevill, 1874) - (RISSOINIDAE)
- percrassum, Buccinum percrassum W.H. Dall, 1881 - (BUCCINIDAE)
- percrassum, Buccinum percrassum H.J. Posselt & A.S. Jensen, 1898 - syn of: Buccinum cyaneum J.G. Bruguière, 1792 - (BUCCINIDAE)
- percrassum, Cheloniceras percrassum M. Collignon, 1962 † - (DOUVILLEICERATIDAE) (FOSSIL)
- percrassus, syn of: Genus Oldroydia W.H. Dall, 1894 (LEPTOCHITONIDAE)
- percristata, Albinaria percristata H. Nordsieck, 1993 - (CLAUSILIIDAE)
- percristata neuberti, Albinaria percristata neuberti H. Nordsieck, 1993 - (CLAUSILIIDAE)
- percristata vallicola, Albinaria percristata vallicola H. Nordsieck, 1993 - (CLAUSILIIDAE)
- percristata violae, Albinaria percristata violae H. Nordsieck, 1993 - (CLAUSILIIDAE)
- Perculia, syn of: Subgenus Cancellaria (Pyruclia) A.A. Olsson, 1932 (CANCELLARIIDAE)
- percultus, Eoacteon percultus N.F. Sohl, 1964 † - (ACTEONINIDAE) (FOSSIL)
- Percunas, Genus Percunas E.G.G. Marcus, 1970 (DORIDIDAE)
- percurvatum, Barnesoceras percurvatum Flower, 1964 † - (ELLESMEROCERATIDAE) (FOSSIL)
- percurvatum, Woosteroceras percurvatum Flower, 1964 † - (ELLESMEROCERATIDAE) (FOSSIL)
- percurvatum, Tuyloceras percurvatum Foerste & Savage, 1927 † - (LOWOCERATIDAE) (FOSSIL)
- percus, Hexaplex trunculus percus (A. De Gregorio, 1884) - (MURICIDAE)
- percussa, Chloritis percussa (P.M. Heude, 1882) - (CAMAENIDAE)
- percyana, Ampelita percyana (E.A. Smith, 1880) - (ACAVIDAE)
- percyanus, Fusus percyanus G.B. Sowerby, 1880 - syn of: Fusinus polygonoides (J.B.P.A. Lamarck, 1822) - (FASCIOLARIIDAE)
- perdecorata, Clathurella perdecorata (W.H. Dall, 1927) - (CLATHURELLIDAE)
- perdecorata, Philbertia perdecorata W.H. Dall, 1927 - syn of: Clathurella perdecorata (W.H. Dall, 1927) - (RAPHITOMIDAE)
- perdecorata lionta, Clathurella perdecorata lionta (W.H. Dall, 1927) - (CLATHURELLIDAE)
- perdentata, Cypraeovula amphithales perdentata G. Raybaudi Massilia, 1995 - (CYPRAEIDAE)
- perdentata, Myoplusia bilunata perdentata (Barrande, 1881 †) - (MALLETIIDAE) (FOSSIL)
- perdepressa, Liospira perdepressa C.M. Poulsen, 1974 † - (EOTOMARIIDAE) (FOSSIL)
- perdepressa, Microcystis perdepressa H.B. Preston, 1913 - (EUCONULIDAE)
- perdepressa, Pelseneeria perdepressa (W.H. Dall, 1925) - (EULIMIDAE)
- perdepressa, Aerotrochus perdepressa (C.B. Adams, 1849) - (SAGDIDAE)
- perdepressa, Valvata perdepressa B. Walker, 1906 - (VALVATIDAE)
- perdepressa brevior, Aerotrochus perdepressa brevior (C.B. Adams, 1851) - (SAGDIDAE)
- Perdicella, Genus Perdicella W.H. Pease, 1869 (ACHATINELLIDAE)
- perdiciana, Massyla perdiciana A.A. Olsson, 1942 † - (CANCELLARIIDAE) (FOSSIL)
- perdicina, Lyria perdicina J.K. Megerle Von Mühlfeld, 1829 - syn of: Lyria pattersonia (G. Perry, 1811) - (VOLUTIDAE)
- perdicinia, Bulla perdicinia K.T. Menke, 1853 - syn of: Bulla striata J.G. Bruguière, 1792 - (BULLIDAE)
- perdidoensis, Tetrentodon perdidoensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perdigna, Pisinna perdigna (C.F. Laseron, 1956) - (ANABATHRIDAE)
- perdiminuta, Pyrgulina perdiminuta Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- perdisjunctum, Helisoma subcrenatum perdisjunctum H.B. Baker, 1945 - (PLANORBIDAE)
- perdistinctum, Crocidopoma perdistinctum (J. Gundlach, 1858) - (NEOCYCLOTIDAE)
- perdistinctum tomense, Crocidopoma perdistinctum tomense C. de la Torre & P. Bartsch, 1942 - (NEOCYCLOTIDAE)
- perdistorta, Distorsio perdistorta H.C. Fulton, 1938 - (PERSONIDAE)
- perdita, Flammulina perdita F.W. Hutton, 1883 - (CHAROPIDAE)
- perdita, Turritella perdita T.A. Conrad, 1865 † - (TURRITELLIDAE) (FOSSIL)
- perdita, Tetrentodon perdita C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perditum, Crioceratites perditum Gerth, 1925 † - (CRIOCERATITIDAE) (FOSSIL)
- perditus, Bothriembryon perditus T. Iredale, 1939 - (BOTHRIEMBRYONTIDAE)
- perditus, Potamides perditus J.F. Bayan, 1870 † - (POTAMIDIDAE) (FOSSIL)
- perdives, Stenothyra perdives T. Iredale, 1943 - (STENOTHYRIDAE)
- perdix, Partulina perdix (L.A. Reeve, 1850) - (ACHATINELLIDAE)
- perdix, Achatina perdix J.B.P.A. Lamarck, 1822 - (ACHATINIDAE)
- perdix, Eurytus perdix (L. Pfeiffer, 1848) - (AMPHIBULIMIDAE)
- perdix, Architectonica perdix R.B. Hinds, 1844 - (ARCHITECTONICIDAE)
- perdix, Buccinum perdix C. Linnaeus, 1758 - syn of: Buccinum cyaneum J.G. Bruguière, 1792 - (BUCCINIDAE)
- perdix, Bulimus perdix L. Pfeiffer, 1848 - syn of: Eurytus perdix (L. Pfeiffer, 1848) - (BULIMULIDAE)
- perdix, Cochlostoma perdix C.A. Westerlund, 1890 - syn of: Cochlostoma sardoum C.A. Westerlund, 1890 - (COCHLOSTOMATIDAE)
- perdix, Cyclophorus perdix W.J. Broderip & G.B. I Sowerby, 1829 - (CYCLOPHORIDAE)
- perdix, Glycymeris perdix L.A. Reeve, 1843 - syn of: Glycymeris queketti (G.B. III Sowerby, 1897) - (GLYCYMERIDIDAE)
- perdix, Phasianella perdix W. Wood, 1828 - syn of: Phasianella ventricosa W.J. Swainson, 1822 - (PHASIANELLIDAE)
- perdix, Tonna perdix (C. Linnaeus, 1758) - (TONNIDAE)
- Perdix, syn of: Genus Tonna M.T. Brünnich, 1772 (TONNIDAE)
- perdix, Turbo perdix W. Wood, 1828 - syn of: Phasianella ventricosa W.J. Swainson, 1822 - (TURBINIDAE)
- perdix, Unio perdix I. Lea, 1834 - syn of: Actinonaias pectorosa (T.A. Conrad, 1834) - (UNIONIDAE)
- perdix, Venus perdix J.B.G.M. Bory De Saint-Vincent, 1827 - syn of: Chione undatella (G.B. I Sowerby, 1835) - (VENERIDAE)
- perdix, Venus perdix A. Valenciennes, 1846 - syn of: Chione undatella (G.B. I Sowerby, 1835) - (VENERIDAE)
- perdix borneensis, Cyclophorus perdix borneensis (W. Metcalfe, 1851) - (CYCLOPHORIDAE)
- perdix brasiliana, Tonna perdix brasiliana O.A.L. Mörch, 1877 - syn of: Tonna pennata (O.A.L. Mörch, 1853) - (TONNIDAE)
- perdix occidentalis, Tonna perdix occidentalis O.A.L. Mörch, 1877 - syn of: Tonna pennata (O.A.L. Mörch, 1853) - (TONNIDAE)
- perdix paucimaculata, Tonna perdix paucimaculata L. Bozzetti, 2010 - syn of: Tonna perdix (C. Linnaeus, 1758) - (TONNIDAE)
- perdix pennata, Dolium perdix pennata O.A.L. Mörch, 1853 - syn of: Tonna pennata (O.A.L. Mörch, 1853) - (TONNIDAE)
- perdix plicifera, Cyclophorus perdix plicifera E.C. Von Martens, 1900 - (CYCLOPHORIDAE)
- perdix rufa, Tonna perdix rufa H.M.D. de Blainville, 1829 - syn of: Tonna perdix (C. Linnaeus, 1758) - (TONNIDAE)
- perdix tuba, Cyclophorus perdix tuba G.B. Sowerby, 1842 - (CYCLOPHORIDAE)
- perdix undosa, Partulina perdix undosa J.T. Gulick, 1856 - (ACHATINELLIDAE)
- perdix ventricosior, Tonna perdix ventricosior K.T. Menke, 1829 - syn of: Tonna perdix (C. Linnaeus, 1758) - (TONNIDAE)
- perdominulus, Nassarius perdominulus S. Nomura & N. Zinbo, 1935 † - (NASSARIIDAE) (FOSSIL)
- perdubia, Lauria perdubia T.V. Wollaston, 1878 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (LAURIIDAE)
- perductorum, Mesembrinus perductorum H.A. Rehder, 1943 - (BULIMULIDAE)
- perduensis, Lirophora perduensis W.C. Mansfield, 1940 † - (VENERIDAE) (FOSSIL)
- perdulca, Mitra perdulca G.T. Poppe, S.P. Tagaro & R. Salisbury, 2009 - (MITRIDAE)
- pereffossa, Globivenus pereffossa (P. Dautzenberg & H. Fischer, 1906) - (VENERIDAE)
- pereger, Murex pereger G.A. Brugnone, 1873 - syn of: Ocinebrina hybrida (A. Aradas & L. Benoit, 1876) - (MURICIDAE)
- peregra, Neptunea peregra É.A.A. Locard, 1897 - syn of: Turrisipho fenestratus (W. Turton, 1834) - (BUCCINIDAE)
- peregra, Neptunia peregra É.A.A. Locard, 1897 - syn of: Turrisipho fenestratus (W. Turton, 1834) - (BUCCINIDAE)
- peregra, Euomphalia peregra Š. Brusina, 1870 - syn of: Euomphalia strigella (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- peregra, Lymnaea peregra O.F. Müller, 1774 - syn of: Radix labiata (E.A. Rossmässler, 1835) - (LYMNAEIDAE)
- peregra, Radix peregra O.F. Müller, 1774 - syn of: Radix labiata (E.A. Rossmässler, 1835) - (LYMNAEIDAE)
- peregra, Mitra peregra L.A. Reeve, 1844 - syn of: Nebularia fraga (J.R.C. Quoy & J.P. Gaimard, 1833) - (MITRIDAE)
- peregra, Muricopsis peregra (A.H.E. Beyrich, 1854 †) - (MURICIDAE) (FOSSIL)
- peregra bakowskyana, Lymnaea peregra bakowskyana S. Clessin, 1879 - syn of: Lymnaea bakowskyana (S. Clessin, 1879) - (LYMNAEIDAE)
- peregra middendorffi, Lymnaea peregra middendorffi W. Dybowski, 1904 - syn of: Lymnaea middendorffi (W. Dybowski, 1904) - (LYMNAEIDAE)
- peregra torquilla, Unio peregra torquilla C.A. Westerlund, 1876 - syn of: Lymnaea torquilla (C.A. Westerlund, 1876) - (UNIONIDAE)
- peregre, Colus peregre É.A.A. Locard, 1897 - (BUCCINIDAE)
- Peregriana, syn of: Genus Lymnaea J.B.P.A. Lamarck, 1801 (LYMNAEIDAE)
- peregriformis, Stagnicola palustris peregriformis (K. Miller, 1873) - (LYMNAEIDAE)
- peregrina, Eolis peregrina S. Delle Chiaje, 1841 - syn of: Berghia coerulescens (C.L. Laurillard, 1832) - (AEOLIDIIDAE)
- peregrina, Acar peregrina I. Libassi, 1859 - syn of: Acar clathrata (J.L.M. Defrance, 1816) - (ARCIDAE)
- peregrina, Gresslya peregrina (B. Phillips, 1829 †) - (CERATOMYIDAE) (FOSSIL)
- peregrina, Alopia subcosticollis peregrina R. von Kimakowicz, 1943 - (CLAUSILIIDAE)
- peregrina, Tryonia peregrina R. Hershler, H.P. Liu & J.J. Landye, 2011 - (COCHLIOPIDAE)
- peregrina, Mitrella peregrina K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- peregrina, Doris peregrina J.F. Gmelin, 1791 - syn of: Cratena peregrina (J.F. Gmelin, 1791) - (DORIDIDAE)
- peregrina, Cratena peregrina (J.F. Gmelin, 1791) - (FACELINIDAE)
- peregrina, Facelina peregrina R.E. Grant, 1823 - syn of: Facelina auriculata (O.F. Müller, 1776) - (FACELINIDAE)
- peregrina, Phidiana peregrina A. da Costa, 1866 - syn of: Caloria elegans (J. Alder & A. Hancock, 1845) - (FACELINIDAE)
- peregrina, Cratena peregrina J.F. Gmelin, 1791 - syn of: Cratena peregrina (J.F. Gmelin, 1791) - (FACELINIDAE)
- peregrina, Calmella peregrina F.J. Cantraine - syn of: Calmella cavolini (J.B. Vérany, 1846) - (FLABELLINIDAE)
- peregrina, Hydrobia peregrina Boettger, 1901 † - (HYDROBIIDAE) (FOSSIL)
- peregrina, Cernuella peregrina É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- peregrina, Lepetopsis peregrina Newell, 1935 † - (LEPETOPSIDAE) (FOSSIL)
- peregrina, Lymnaea peregrina G.P. Deshayes, 1838 † - (LYMNAEIDAE) (FOSSIL)
- peregrina, Lymnaea peregrina S. Clessin, 1882 - syn of: Pseudosuccinea columella (T. Say, 1817) - (LYMNAEIDAE)
- peregrina, Marita peregrina A.A. Gould, 1860 - syn of: Marita compta (A. Adams & G.F. Angas, 1864) - (MANGELIIDAE)
- peregrina, Volvarina peregrina S. Gofas & F. Fernandes, 1992 - (MARGINELLIDAE)
- peregrina, Favartia peregrina (B.M. Olivera, 1980) - (MURICIDAE)
- peregrina, Murexiella peregrina B.M. Olivera, 1980 - syn of: Favartia peregrina (B.M. Olivera, 1980) - (MURICIDAE)
- peregrina, Latiaxis peregrina A.W.B. Powell, 1947 - syn of: Babelomurex lischkeanus (R.W. Dunker, 1882) - (MURICIDAE)
- peregrina, Nuculoma peregrina (G.P. Deshayes, 1860 †) - (NUCULIDAE) (FOSSIL)
- peregrina, Biomphalaria peregrina (A.V.M.D. D'Orbigny, 1835) - (PLANORBIDAE)
- peregrina, Millerelix peregrina (H.A. Rehder, 1932) - (POLYGYRIDAE)
- peregrina, Chondrothyretes impressa peregrina (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- peregrina, Pteria peregrina Stoyanow, 1949 † - (PTERIIDAE) (FOSSIL)
- peregrina, Rutitrigonia peregrina van Hoepen, 1929 † - (RUTITRIGONIIDAE) (FOSSIL)
- peregrina, Succinea peregrina C.L.F. von Sandberger, 1874 † - (SUCCINEIDAE) (FOSSIL)
- peregrina, Gastrana peregrina (B. de Basterot, 1825 †) - (TELLINIDAE) (FOSSIL)
- peregrina, Melanoides peregrina A. Mousson, 1869 - (THIARIDAE)
- peregrina, Thyasira peregrina T. Iredale, 1930 - (THYASIRIDAE)
- peregrina, Tritonia peregrina (J.B.P.A. Lamarck, 1819) - (TRITONIIDAE)
- peregrina, Schwartziella peregrina S. Gofas, 2007 - (ZEBINIDAE)
- Peregrinamor, Genus Peregrinamor Shôji, 1938 (CYAMIIDAE)
- peregrinata, Eritropis peregrinata J.C.W. Cope, 1999 † - (ERITROPIDAE) (FOSSIL)
- peregrinator, Akibumia peregrinator (A. Warén & P. Bouchet, 1990) - (LAUBIERINIDAE)
- peregrinator, Akibumia peregrinator A. Warén & P. Bouchet, 1990 - syn of: Akibumia peregrinator (A. Warén & P. Bouchet, 1990) - (LAUBIERINIDAE)
- peregrinator, Echinolittorina peregrinator D.G. Reid, 2011 - (LITTORINIDAE)
- peregrinator, Raphitoma peregrinator É.A.A. Locard, 1897 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (RAPHITOMIDAE)
- peregrinatrix, Laubierina peregrinatrix A. Warén & P. Bouchet, 1990 - syn of: Akibumia peregrinator (A. Warén & P. Bouchet, 1990) - (LAUBIERINIDAE)
- peregrini, Cingulifera cingulatum peregrini G. Falkner, 1998 - (HELICIDAE)
- Peregrinoceras, Genus Peregrinoceras Sazonova , 1971 † (POLYPTYCHITIDAE) (FOSSIL)
- peregrinorsa, Protocardia peregrinorsa (A.V.M.D. D'Orbigny, 1842 †) - (CARDIIDAE) (FOSSIL)
- peregrinum, Calliostoma peregrinum (B.A. Marshall, 1995) - (CALLIOSTOMATIDAE)
- peregrinum, Ampullotrochus peregrinum B.A. Marshall, 1995 - syn of: Calliostoma peregrinum (B.A. Marshall, 1995) - (CALLIOSTOMATIDAE)
- peregrinum, Cardium peregrinum F.P. Jousseaume, 1888 - syn of: Vasticardium pectiniforme (I. von Born, 1780) - (CARDIIDAE)
- peregrinum, Thericium peregrinum R.C. Hoerle, 1972 † - (CERITHIIDAE) (FOSSIL)
- peregrinum, Gemmellaroceras peregrinum (Haug †) - (POLYMORPHITIDAE) (FOSSIL)
- peregrinum, Globonema peregrinum (J. Perner, 1903 †) - (TROCHONEMATIDAE) (FOSSIL)
- peregrinum, Pleurotoma peregrinum É.A.A. Locard, 1897 - syn of: Typhlomangelia nivalis (S.L. Lovén, 1846) - (TURRIDAE)
- peregrinus, Neoclypites peregrinus Muller, 1973 † - (CERATITIDA (unassigned)) (FOSSIL)
- peregrinus, Rhophodon peregrinus C. Hedley, 1924 - (CHAROPIDAE)
- peregrinus, Chiton peregrinus K.H.J. Thiele, 1909 - (CHITONIDAE)
- peregrinus, Rhyssoplax peregrinus C. Dupuis, 1918 - syn of: Chiton peregrinus K.H.J. Thiele, 1909 - (CHITONIDAE)
- peregrinus, Paranautilus peregrinus (L. Waagen, 1879 †) - (LIROCERATIDAE) (FOSSIL)
- peregrinus, Pearylandites peregrinus Tozer, 1994 † - (LONGOBARDITIDAE) (FOSSIL)
- peregrinus, Boreotrophon peregrinus W.H. Dall, 1902 - syn of: Boreotrophon multicostatus (J.F. von Eschscholtz, 1829) - (MURICIDAE)
- peregrinus, Nautilus peregrinus L. Waagen, 1879 † - syn of: Paranautilus peregrinus (L. Waagen, 1879 †) - (NAUTILIDAE) (FOSSIL)
- peregrinus, Varlheideites peregrinus Rawson & Kemper, 1978 † - (NEOCOMITIDAE) (FOSSIL)
- peregrinus, Taphius peregrinus D'Orbigny, 1861 - syn of: Biomphalaria straminea (R.W. Dunker, 1848) - (PLANORBIDAE)
- peregrinus, Technophorus peregrinus F.S. Xu, 1990 † - (TECHNOPHORIDAE) (FOSSIL)
- peregrinus, Pseudophyllites peregrinus Spath, 1953 † - (TETRAGONITIDAE) (FOSSIL)
- peregrinus, Neohimavatites peregrinus Tozer, 1994 † - (TIBETITIDAE) (FOSSIL)
- peregrinus, Unio peregrinus B. Phillips, 1829 - (UNIONIDAE)
- peregrovata, Radix peregrovata W. Kobelt, 1877 - syn of: Radix labiata (E.A. Rossmässler, 1835) - (LYMNAEIDAE)
- Pereiraea, Genus Pereiraea Crosse, 1867 † (PEREIRAEIDAE) (FOSSIL)
- PEREIRAEIDAE Bandel, 2007 † - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA) (FOSSIL)
- pereirai, Drymaeus pereirai J.J. Parodíz, 1958 - (BULIMULIDAE)
- Pereireia, syn of: Genus Pereiraea Crosse, 1867 † (PEREIRAEIDAE) (FOSSIL)
- perelegans, Plectostylus coquimbensis perelegans H.A. Pilsbry, 1897 - (BOTHRIEMBRYONTIDAE)
- perelegans, Bufonaria perelegans A.G. Beu, 1987 - (BURSIDAE)
- perelegans, Allorisma perelegans L. Waagen, 1881 † - syn of: Wilkingia perelegans (L. Waagen, 1881 †) - (EDMONDIIDAE) (FOSSIL)
- perelegans, Epitonium perelegans (M.E.A. de Boury in A.E.M. Cossmann, 1902 †) - (EPITONIIDAE) (FOSSIL)
- perelegans, Retispira perelegans (White & R.P. Whitfield, 1862 †) - (KNIGHTITIDAE) (FOSSIL)
- perelegans, Lophospira perelegans Stauffer, 1937 † - syn of: Lophospira perangulata (J.W. Hall, 1847 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perelegans, Maikhanella perelegans S.Y. Feng & al., 2001 † - syn of: Canopoconus superatus S.Y. Feng & al., 2001 † - (MAIKHANELLIDAE) (FOSSIL)
- perelegans, Siratus perelegans (E.H. Vokes, 1965) - (MURICIDAE)
- perelegans, Wilkingia perelegans (L. Waagen, 1881 †) - (SANGUINOLITIDAE) (FOSSIL)
- perelegans, Careoradula perelegans (E.C. Von Martens, 1898) - (STREPTAXIDAE)
- perelevata, Coryda melanocephala perelevata H.A. Pilsbry - (CEPOLIDAE)
- perelloi, Turbonilla perelloi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- perelongatus, Megalobulimus oblongus perelongatus (J.C. Bequaert, 1948) - (MEGALOBULIMIDAE)
- perempuan, Sulawesidrobia perempuan S. Zielske, M. Glaubrecht & M. Haase, 2011 - (HYDROBIIDAE)
- perenensis, Drymaeus expansus perenensis S.I. Da Costa, 1901 - (BULIMULIDAE)
- Perenna, Subgenus Lucidella (Perenna) R.J.L. Guppy, 1867 (HELICINIDAE)
- pererosa, Geomitra pererosa T.V. Wollaston, 1878 - syn of: Discula turricula (R.T. Lowe, 1831) - (HYGROMIIDAE)
- peresi, Atlanta peresi S. Frontier, 1966 - (ATLANTIDAE)
- peresi, Timoclea peresi E. Fischer-Piette & D. Vukadinovic, 1977 - (VENERIDAE)
- perestroica, Conus perestroica L. Raybaudi Massilia, 1989 - syn of: Graphiconus primus (D. Röckel & W. Korn, 1990) - (CONIDAE)
- perexcavata, Sunetta perexcavata H.C. Fulton, 1930 - syn of: Sunetta subquadrata (G.B. II Sowerby, 1851) - (VENERIDAE)
- perexigua, Fusceulima perexigua (R. Tate & W.L. May, 1900) - (EULIMIDAE)
- perexigua, Parviperna perexigua T. Iredale, 1939 † - (MALLEIDAE) (FOSSIL)
- perexigua, Muricopsis perexigua E.H. Vokes, 1994 - (MURICIDAE)
- perexigua, Isognomon perexigua T. Iredale, 1939 - syn of: Isognomon nucleus (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- perexigua, Moulinsia perexigua J.F. Quadras & O.F. von Möllendorff, 1894 - (PUPINIDAE)
- perexigua, Pseudorissoina perexigua (R. Tate & W.L. May, 1900) - (PYRAMIDELLIDAE)
- perexigua, Rissoia perexigua R. Tate & W.L. May, 1900 - syn of: Fusceulima perexigua (R. Tate & W.L. May, 1900) - (RISSOIDAE)
- perexigua, Erato perexigua T.A. Conrad, 1841 † - (TRIVIIDAE) (FOSSIL)
- perexiguum, Buccinum perexiguum P. Dautzenberg, 1925 - syn of: Buccinum oblitum E.R. Sykes, 1911 - (BUCCINIDAE)
- perexilis, Clausilia perexilis J.R. Bourguignat, 1877 - syn of: Clausilia rugosa reboudii D. Dupuy, 1850 - (CLAUSILIIDAE)
- perexilis, Hemisurcula perexilis (T.H. Aldrich, 1886 †) - (CLAVATULIDAE) (FOSSIL)
- perexilis, Antimitrella perexilis (W.H. Turton, 1932) - (COLUMBELLIDAE)
- perexilis, Merdigera perexilis É.A.A. Locard, 1894 - syn of: Merdigera obscura (O.F. Müller, 1774) - (ENIDAE)
- perexilis, Epitonium perexilis W.H. Turton, 1932 - syn of: Epitonium kraussi (P. Nyst, 1871) - (EPITONIIDAE)
- perexilis, Dolicholatirus perexilis (T.A. Conrad, 1848 †) - (FASCIOLARIIDAE) (FOSSIL)
- perexilis, Campolaemus perexilis (E.A. Smith, 1892 †) - (HYPSELOSTOMATIDAE) (FOSSIL)
- perexilis, Dentimargo perexilis (A.R.J.B. Bavay, 1922) - (MARGINELLIDAE)
- perexilis, Mitra perexilis W.H. Turton, 1932 - syn of: Mitra latruncularia L.A. Reeve, 1844 - (MITRIDAE)
- perexilis, Turbonilla perexilis W.H. Turton, 1932 - (PYRAMIDELLIDAE)
- perexilis, Turbinella perexilis T.A. Conrad, 1848 † - syn of: Dolicholatirus perexilis (T.A. Conrad, 1848 †) - (TURBINELLIDAE) (FOSSIL)
- perexpansum, Cyrtogomphoceras perexpansum Foerste, 1935 † - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- perexpansum, Labyrinthoceras perexpansum Buckman † - (SPHAEROCERATIDAE) (FOSSIL)
- perexpansus, Discosorus perexpansus Foerste, 1936 † - (DISCOSORIDAE) (FOSSIL)
- perezdionisi, Turbonilla perezdionisi A. Peñas & E. Rolán, 1997 - (PYRAMIDELLIDAE)
- Perezella, Genus Perezella M.R. Cooper, 2015 † (IOTRIGONIIDAE) (FOSSIL)
- perezi, Buchotrigonia perezi Villamil, 1992 † - (BUCHOTRIGONIIDAE) (FOSSIL)
- perezi, Columbinia perezi (F.P. Jousseaume, 1887) - (CLAUSILIIDAE)
- perezi, Gargamella perezi (E.M. Llera & J.A. Ortea, 1982) - (DISCODORIDIDAE)
- perezi, Zelandites perezi McLearn 1972 † - (GAUDRYCERATIDAE) (FOSSIL)
- perezi, Montacuta perezi J.P.L. Pelseneer, 1909 - syn of: Litigiella glabra (P. Fischer in L. de Folin & J.P.L. Périer, 1873) - (MONTACUTIDAE)
- perezi, Neocyclotus perezi (J.G. Hidalgo, 1866) - (NEOCYCLOTIDAE)
- perezi, Pseudoteudopsis perezi Riccardi, 2016 † - (PLESIOTEUTHIDIDAE) (FOSSIL)
- perezi, Annularia perezi (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- perezi, Ondina perezi (P. Dautzenberg & H. Fischer, 1925) - (PYRAMIDELLIDAE)
- perezi, Tomelasmus thomsoni perezi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perezi guitarti, Annularia perezi guitarti (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- perezianum, Ancyloceras perezianum A.V.M.D. D'Orbigny, 1850 † - (ANCYLOCERATIDAE) (FOSSIL)
- perezianum, Grycia perezianum (J.J.F. Whiteaves, 1876 †) - (HOPLITIDAE) (FOSSIL)
- perezii, Anisus perezii (M.de la Paz Graells in D. Dupuy, 1850) - (PLANORBIDAE)
- perezii, Cyclas perezii T. Prime, 1870 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- perezreyesi, Frenguelliella perezreyesi H.A. Leanza, 1993 † - (TRIGONIIDAE) (FOSSIL)
- perfasciata, Stereophaedusa valida perfasciata (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- perfasciata, Pleurotomaria perfasciata J.W. Hall, 1859 † - (PLEUROTOMARIIDAE) (FOSSIL)
- perfecta, Partulina gouldii perfecta H.A. Pilsbry - (ACHATINELLIDAE)
- perfecta, Caprinuloidea perfecta K.V.W. Palmer, 1928 † - (CAPRINULOIDEIDAE) (FOSSIL)
- perfecta, Herilla ziegleri perfecta (A.J. Wagner, 1915) - (CLAUSILIIDAE)
- perfecta, Helix perfecta J.R. Bourguignat, 1883 - syn of: Cingulifera cingulatum gobanzi G.R. von Frauenfeld, 1867 - (HELICIDAE)
- perfecta, Anacithara perfecta E.A. Kay, 1979 - (HORAICLAVIDAE)
- perfecta, Lima perfecta E.A. Smith, 1904 - (LIMIDAE)
- perfecta, Lophospira perfecta E.F.R.K. Koken & J. Perner, 1925 † - syn of: Lophospira milleri (Miller, 1877 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perfecta, Notomyrtea perfecta Glover & J.D. Taylor, 2016 - (LUCINIDAE)
- perfecta, Ocinebrina perfecta F. Settepassi, 1977 ex T.A. de M. Monterosato MS - syn of: Ocinebrina helleri (Š. Brusina, 1865) - (MURICIDAE)
- perfecta, Brotia perfecta (A. Mousson, 1849 or, 1899) - (PACHYCHILIDAE)
- perfecta, Tropidophora perfecta H.C. Fulton, 1903 - (POMATIIDAE)
- perfecta, Turbonilla perfecta A. Adams, 1860 - (PYRAMIDELLIDAE)
- perfecta, Cingula perfecta (E.A. Smith, 1890) - (RISSOIDAE)
- perfecta, Rissoa perfecta E.A. Smith, 1890 - syn of: Cingula perfecta (E.A. Smith, 1890) - (RISSOIDAE)
- perfecta, Iniforis perfecta (W.H. Pease, 1871) - (TRIPHORIDAE)
- perfecta, Arangia perfecta (H.A. Pilsbry, 1942) - (UROCOPTIDAE)
- perfectecostata, Parabalea pilsbryi perfectecostata H. Nordsieck, 2005 - (CLAUSILIIDAE)
- perfectum, Docidoceras perfectum Buckman † - (OTOITIDAE) (FOSSIL)
- perfectum, Trapezium perfectum J.K. Megerle Von Mühlfeld, 1811 - syn of: Trapezium oblongum (C. Linnaeus, 1758) - (TRAPEZIDAE)
- perfectus, Sellanarcestes perfectus Chlupac & Turek, 1983 † - (ANARCESTIDAE) (FOSSIL)
- perfectus, Lepidotrochus perfectus Pan, 1982 † - (CIRRIDAE) (FOSSIL)
- perfectus, Brephodrillia perfectus H.A. Pilsbry & H.N. Lowe, 1932 - (DRILLIIDAE)
- perfectus, Lituites perfectus Wahlenberg, 1818 † - (LITUITIDAE) (FOSSIL)
- perfectus, Coralliophila perfectus P. Fischer, 1883 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- perfectus, Chlamys perfectus J.C. Melvill, 1909 - syn of: Laevichlamys andamanica (H.B. Preston, 1908) - (PECTINIDAE)
- perfectus, Prolecanites perfectus A. Schmidt, 1925 † - (PROLECANITIDAE) (FOSSIL)
- perfectus, Triphora perfectus W.H. Pease, 1871 - syn of: Iniforis perfecta (W.H. Pease, 1871) - (TRIPHORIDAE)
- perfelix, Oscilla perfelix (S. Nomura, 1938) - (PYRAMIDELLIDAE)
- perfervida, Mitrella perfervida (W.H. Dall, 1900 †) - (COLUMBELLIDAE) (FOSSIL)
- perfervida megala, Mitrella perfervida megala Gardner, 1947 † - (COLUMBELLIDAE) (FOSSIL)
- perfestiva, Eoacmaea perfestiva (M.J. Faber, 2004) - (EOACMAEIDAE)
- perfestiva, Patelloida perfestiva M.J. Faber, 2004 - syn of: Eoacmaea perfestiva (M.J. Faber, 2004) - (LOTTIIDAE)
- perficus, Saginafusus pricei perficus T. Iredale, 1931 - (FASCIOLARIIDAE)
- perfida, Trochoclisa perfida Horný, 1964 † - (CLISOSPIRIDAE) (FOSSIL)
- perfidus, Pachydiscus perfidus (Grossouvre, 1894 †) - (DESMOCERATIDAE) (FOSSIL)
- perfiliformis, Eulimella perfiliformis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- perfilosum, Mitorthoceras perfilosum W.J. Gordon, 1960 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- perfilumserrae, Parthenina perfilumserrae Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- perfluans, Antiguraleus perfluans (K.H. Barnard, 1958) - (MANGELIIDAE)
- perfoliatum, Epitonium perfoliatum (K.H.J. Thiele, 1925) - (EPITONIIDAE)
- perfoliatus, Favorinus perfoliatus K. Baba, 1949 - (FACELINIDAE)
- perforans, Arca perforans W. Turton, 1819 - syn of: Striarca lactea (C. Linnaeus, 1758) - (ARCIDAE)
- perforans, Crepidula perforans (A. Valenciennes, 1846) - (CALYPTRAEIDAE)
- perforans, Striarca perforans W. Turton, 1819 - syn of: Striarca lactea (C. Linnaeus, 1758) - (NOETIIDAE)
- perforans, Venus perforans G. Montagu, 1803 - syn of: Venerupis corrugata saxatilis (L.B. Fleuriau de Bellevue, 1802) - (VENERIDAE)
- perforata, Lanrellaria perforata E.A. Liardet, 1876 - syn of: Lamellidea pusilla (A.A. Gould, 1847) - (ACHATINELLIDAE)
- perforata, Leptachatina perforata C.M. Cooke, 1911 - (AMASTRIDAE)
- perforata, Bythinia perforata J.R. Bourguignat - syn of: Pseudamnicola dupotetiana (E. Forbes, 1838) - (AMNICOLIDAE)
- perforata, Eburna perforata G.B. II Sowerby, 1870 - syn of: Babylonia perforata (G.B. II Sowerby, 1870) - (ANCILLARIIDAE)
- perforata, Omphalotropis perforata A. Mousson, 1865 - (ASSIMINEIDAE)
- perforata, Babylonia perforata (G.B. II Sowerby, 1870) - (BABYLONIIDAE)
- perforata, Miophaedusa perforata (O. Böttger, 1877 †) - (CLAUSILIIDAE) (FOSSIL)
- perforata, Cochliopa perforata F.G. Thompson & R. Hershler, 1991 - (COCHLIOPIDAE)
- perforata, Eatoniella perforata W.F. Ponder, 1965 - (EATONIELLIDAE)
- perforata, Guppya perforata W.H. Dall, 1926 - (EUCONULIDAE)
- perforata, Helix perforata E. Caziot, 1910 - syn of: Macularia niciensis (A.E.J. Férussac, 1821) - (HELICIDAE)
- perforata, Holopea perforata Lindström, 1884 † - (HOLOPEIDAE) (FOSSIL)
- perforata, Saccoia perforata (D. Pantanelli, 1886 †) - (HYDROBIIDAE) (FOSSIL)
- perforata, Pyrgulopsis perforata R. Hershler, H.P. Liu & C. Bradford, 2013 - (HYDROBIIDAE)
- perforata, Lophospira perforata Ulrich & Scofield, 1897 † - syn of: Lophospira perangulata (J.W. Hall, 1847 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perforata, Fimbria perforata H.C.F. Schumacher, 1817 - syn of: Fimbria fimbriata (C. Linnaeus, 1758) - (LUCINIDAE)
- perforata, Idothea perforata H.C.F. Schumacher, 1817 - syn of: Fimbria fimbriata (C. Linnaeus, 1758) - (LUCINIDAE)
- perforata, Mangelia perforata (Š. Brusina, 1877 †) - (MANGELIIDAE) (FOSSIL)
- perforata, Euspira perforata (G.P. Deshayes, 1864 †) - (NATICIDAE) (FOSSIL)
- perforata, Ennucula perforata (P.M. Rhind & J.A. Allen, 1992) - (NUCULIDAE)
- perforata, Berthella perforata R.A. Philippi, 1844 - syn of: Berthella plumula (G. Montagu, 1803) - (PLEUROBRANCHIDAE)
- perforata, Costabieta perforata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- perforata, Moerchia perforata F. Rubio & E. Rolán, 2014 - (PYRAMIDELLIDAE)
- perforata, Pyramidella perforata (A. Adams, 1854) - (PYRAMIDELLIDAE)
- perforata, Lucidestea perforata C.F. Laseron, 1956 - syn of: Calopia laseroni W.F. Ponder, 1999 - (RISSOIDAE)
- perforata, Clelandella perforata S. Gofas, 2005 - (TROCHIDAE)
- perforata, Trypanaxis perforata (J.B.P.A. Lamarck, 1804 †) - (TRYPANAXIDAE) (FOSSIL)
- perforata, Vitrina perforata C.A. Westerlund, 1876 - syn of: Vitrina pellucida (O.F. Müller, 1774) - (VITRINIDAE)
- perforata pieroangelai, Babylonia perforata pieroangelai T. Cossignani, 2008 - syn of: Babylonia pieroangelai T. Cossignani, 2008 - (BABYLONIIDAE)
- Perforatella, Genus Perforatella F. Schlüter, 1838 (HYGROMIIDAE)
- perforatum, Eulithidium perforatum (R.A. Philippi, 1848) - (PHASIANELLIDAE)
- perforatum, Platyostoma perforatum J.J.F. Whiteaves, 1904 † - (PLATYCERATIDAE) (FOSSIL)
- perforatus, Acteon perforatus W.H. Dall, 1881 - (ACTEONIDAE)
- perforatus, Bostryx infundibulum perforatus (F. Haas, 1951) - (BULIMULIDAE)
- perforatus, Joculator perforatus A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- perforatus, Limulatys perforatus (K.H.J. Thiele, 1925) - (HAMINOEIDAE)
- perforatus, Stenosemus perforatus (P. Kaas, 1990) - (ISCHNOCHITONIDAE)
- perforatus, Macroscaphites perforatus Avram, 1984 † - (MACROSCAPHITIDAE) (FOSSIL)
- perforatus, Allonautilus perforatus (T.A. Conrad, 1847) - (NAUTILIDAE)
- perforatus, Nautilus pompilius perforatus E.O. Willey, 1896 - (NAUTILIDAE)
- perforatus, Linatella perforatus T.A. Conrad, 1849 - syn of: Monoplex wiegmanni (H.E. Anton, 1838) - (RANELLIDAE)
- perforatus, Turbo perforatus G. Perry, 1811 - syn of: Lunella torquata (J.F. Gmelin, 1791) - (TURBINIDAE)
- performosa, Scala performosa M.E.A. de Boury, 1917 - syn of: Eccliseogyra performosa (M.E.A. de Boury, 1917) - (EPITONIIDAE)
- performosa, Eccliseogyra performosa (M.E.A. de Boury, 1917) - (NYSTIELLIDAE)
- perfossa, Geitodoris perfossa J.A. Ortea, 1990 - (DISCODORIDIDAE)
- perfragile, Calliostoma perfragile G.B. III Sowerby, 1903 - (CALLIOSTOMATIDAE)
- perfragilis, Tautautua perfragilis C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- perfragilis, Petalochlamys perfragilis (H.A. Pilsbry, 1901) - (HELICARIONIDAE)
- perfragilis, Diplodon perfragilis W.B. Marshall, 1923 - syn of: Rhipidodonta variabilis (W.G. Maton, 1811) - (HYRIIDAE)
- perfragilis, Arthritica perfragilis C.R. Laws, 1950 † - (LASAEIDAE) (FOSSIL)
- perfragilis, Limaria perfragilis (T. Habe & S. Kosuge, 1966) - (LIMIDAE)
- perfragilis, Arcuatula perfragilis (R.W. Dunker, 1857) - (MYTILIDAE)
- perfragilis, Modiolus perfragilis R.W. Dunker, 1857 - syn of: Arcuatula perfragilis (R.W. Dunker, 1857) - (MYTILIDAE)
- perfragilis, Musculus perfragilis R.W. Dunker, 1857 - syn of: Arcuatula perfragilis (R.W. Dunker, 1857) - (MYTILIDAE)
- perfragilis, Isodaphne perfragilis (M.M. Schepman, 1913) - (RAPHITOMIDAE)
- perfragilis, Pitar perfragilis H.A. Pilsbry & H.N. Lowe, 1932 - syn of: Pitar pura (G.P. Deshayes, 1853) - (VENERIDAE)
- perfragilis, Mesomphix perfragilis A. Wetherby, 1894 - (ZONITIDAE)
- perfragilis sakui, Petalochlamys perfragilis sakui H.A. Pilsbry & Y. Hirase, 1908 - (HELICARIONIDAE)
- perfragilis shikokuensis, Macrochlamys perfragilis shikokuensis H.A. Pilsbry & Y. Hirase, 1903 - syn of: Bekkochlamys shikokuensis (H.A. Pilsbry & Y. Hirase, 1903) - (ARIOPHANTIDAE)
- perfrequens, Helix perfrequens O. Böttger, 1883 - syn of: Metatheba perfrequens (P. Hesse, 1914) - (HELICIDAE)
- perfrequens, Metatheba perfrequens (P. Hesse, 1914) - (HYGROMIIDAE)
- perfrigida, Tellina perfrigida A. De Gregorio, 1885 - syn of: Macoma calcarea (J.F. Gmelin, 1792) - (TELLINIDAE)
- perfucata, Macrochlamys perfucata (W.H. Benson, 1853) - (ARIOPHANTIDAE)
- perfuga, Amesodesma perfuga T. Iredale, 1930 - syn of: Paphies elongata (L.A. Reeve, 1854) - (MESODESMATIDAE)
- pergamena, Melanopsis pergamena Calvert & M. von Neumayr, 1880 † - (MELANOPSIDAE) (FOSSIL)
- pergamenica, Radix pergamenica (P. Oppenheim, 1919 †) - (LYMNAEIDAE) (FOSSIL)
- pergamenti, Kolymia pergamenti Muromtseva, 1984 † - (KOLYMIIDAE) (FOSSIL)
- Pergamidia, Genus Pergamidia Bittner, 1891 † (PERGAMIDIIDAE) (FOSSIL)
- PERGAMIDIIDAE Cox, 1964 † - Family (BIVALVIA-PTERIOMORPHIA-PTERIIDA) (FOSSIL)
- pergaminea, Crenatula pergaminea A.A. Gould, 1850 - syn of: Crenatula picta (J.F. Gmelin, 1791) - (PTERIIDAE)
- pergemma, Arene pergemma Gardner, 1948 - syn of: Arene tricarinata (R.E.C. Stearns, 1872) - (ARENEIDAE)
- pergemma, Liotia pergemma J.A. Gardner, 1948 - syn of: Arene tricarinata (R.E.C. Stearns, 1872) - (LIOTIIDAE)
- pergibba, Mandolina pergibba F. Sacco, 1894 † - (CYPRAEIDAE) (FOSSIL)
- pergracialis, Graphidula pergracialis (B. Wade, 1926 †) - (FASCIOLARIIDAE) (FOSSIL)
- pergracilis, Arca pergracilis B. Wade, 1926 † - (ARCIDAE) (FOSSIL)
- pergracilis, Bathytoma pergracilis (J. Marwick, 1931 †) - (BORSONIIDAE) (FOSSIL)
- pergracilis, Drymaeus pergracilis H. Rolle, 1905 - (BULIMULIDAE)
- pergracilis, Cosmioconcha pergracilis (W.H. Dall, 1913) - (COLUMBELLIDAE)
- pergracilis, Paleopsephaea pergracilis B. Wade, 1926 † - (FASCIOLARIIDAE) (FOSSIL)
- pergracilis, Cecilioides pergracilis M. Connolly - (FERUSSACIIDAE)
- pergracilis, Exilia pergracilis T.A. Conrad, 1860 † - (PTYCHATRACTIDAE) (FOSSIL)
- pergracilis, Exilia pergracilis (T.H. Aldrich, 1886 †) - (PTYCHATRACTIDAE) (FOSSIL)
- pergracilis, Eulimella pergracilis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- pergracilis, Subulites pergracilis Ulrich & Scofield, 1897 † - (SUBULITIDAE) (FOSSIL)
- pergracilis, Melanoides pergracilis E.C. Von Martens, 1897 - (THIARIDAE)
- pergradata, Filodrillia pergradata B.C. Cotton, 1947 - (BORSONIIDAE)
- pergradata, Zeadmete pergradata (J.C. Verco, 1904) - (CANCELLARIIDAE)
- pergradata, Syrnola pergradata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- pergradatum, Cerithium pergradatum W.H. Hudleston, 1889 † - (CERITHIIDAE) (FOSSIL)
- pergranata, Leptochiton pergranata W.H. Dall, 1889 - syn of: Leptochiton pergranatus W.H. Dall, 1889 - (LEPTOCHITONIDAE)
- pergranatus, Leptochiton pergranatus W.H. Dall, 1889 - (LEPTOCHITONIDAE)
- pergrande, Prunum pergrande P.W. Clover, 1974 - (MARGINELLIDAE)
- pergrandis, Ariophanta pergrandis (E.A. Smith, 1895) - (ARIOPHANTIDAE)
- pergrandis, Ryssota pergrandis E.A. Smith, 1895 - syn of: Ariophanta pergrandis (E.A. Smith, 1895) - (CHRONIDAE)
- pergrandis, Embrikena pergrandis (T. Iredale, 1937) - (CONIDAE)
- pergrandis, Elachisina pergrandis E. Rolán & S. Gofas, 2003 - (ELACHISINIDAE)
- pergrandis, Volvarina pergrandis P.W. Clover, 1974 - syn of: Prunum pergrande P.W. Clover, 1974 - (MARGINELLIDAE)
- pergrandis, Linisia pergrandis G.A. Solem, 1959 - (POLYGYRIDAE)
- pergranosa, Trishoplita eumenes pergranosa H.A. Pilsbry & Y. Hirase, 1908 - (BRADYBAENIDAE)
- pergranosa, Poromya pergranosa J.P.L. Pelseneer, 1911 - syn of: Poromya australis E.A. Smith, 1885 - (POROMYIDAE)
- pergranosa, Policordia pergranosa J.P.L. Pelseneer, 1911 - syn of: Poromya australis E.A. Smith, 1885 - (VERTICORDIIDAE)
- pergranosa, Policordia pergranosa B. Prashad, 1932 - syn of: Poromya australis E.A. Smith, 1885 - (VERTICORDIIDAE)
- pergranulari, Impages cinerea pergranulari F. Sacco, 1891 † - (TEREBRIDAE) (FOSSIL)
- pergranulata, Abchasohela pergranulata B. Hausdorf, 2001 - (HYGROMIIDAE)
- pergranulatus, Megalobulimus pergranulatus (H.A. Pilsbry, 1901) - (MEGALOBULIMIDAE)
- pergranulatus, Zonites pergranulatus W. Kobelt, 1878 - (ZONITIDAE)
- pergranulatus cycladicus, Zonites pergranulatus cycladicus G.J. Pfeffer, 1930 - (ZONITIDAE)
- pergranulosa, Humboldtiana pergranulosa G.A. Solem, 1955 - (HUMBOLDTIANIDAE)
- pergraphica, Caseolus pergraphica J.F. Mabille, 1883 - syn of: Caseolus abjectus (R.T. Lowe, 1851) - (HYGROMIIDAE)
- Perheida, Genus Perheida Peńas & Rolán, 2017 (PYRAMIDELLIDAE)
- perhirsuta, Sonorella perhirsuta W.B. Miller, 1967 - (HELMINTHOGLYPTIDAE)
- perhirsutus, Plicolumna perhirsutus W.B. Miller, C.C. Christensen & B. Roth, 1990 - (BULIMULIDAE)
- perhumerata, Eucithara perhumerata R.N. Kilburn & H. Dekker, 2008 - (MANGELIIDAE)
- perhumerosa, Hypselentoma perhumerosa (F.B. Meek, 1872 †) - (GOSSELETINIDAE) (FOSSIL)
- perhumerosa, Pleurotomaria perhumerosa F.B. Meek, 1872 † - syn of: Hypselentoma perhumerosa (F.B. Meek, 1872 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- Periapta, Genus Periapta P. Bouchet & A. Warén, 1986 (EPITONIIDAE)
- Periaulax, Genus Periaulax A.E.M. Cossmann, 1888 (SOLARIELLIDAE)
- Peribola, syn of: Genus Mauritia F.H. Troschel, 1863 (CYPRAEIDAE)
- Peribolus, syn of: Genus Mauritia F.H. Troschel, 1863 (CYPRAEIDAE)
- Peribositra, Genus Peribositra Chen, 1981 † (PTERIOIDEA (unassigned)) (FOSSIL)
- Peribositria, syn of: Genus Bositra Gregorio, 1886 † (POSIDONIIDAE) (FOSSIL)
- peribothrus, Stenarcestes peribothrus (Mojsisovics, 1875 †) - (ARCESTIDAE) (FOSSIL)
- pericalla, Rhododerma pericalla (W. Kobelt & H. Rolle, 1896) - (HELICIDAE)
- pericalles, Ficadusta pulchella pericalles (J.C. Melvill & R. Standen, 1904) - (CYPRAEIDAE)
- pericalles, Volvarina pericalles (J.R. le B. Tomlin, 1916) - (MARGINELLIDAE)
- pericarinata, Pleurotomaria pericarinata J.W. Hall, 1847 † - (PLEUROTOMARIIDAE) (FOSSIL)
- Pericarinata, Genus Pericarinata Pan, 1982 † (PSEUDOMELANIIDAE) (FOSSIL)
- pericarinatus, Bellerophon pericarinatus T.A. Conrad, 1842 † - syn of: Pharkidonotus percarinatus (T.A. Conrad, 1842 †) - (BELLEROPHONTIDAE) (FOSSIL)
- Pericarinoceras, Genus Pericarinoceras Zhao & Liang, 1966 † (ANDERSSONOCERATIDAE) (FOSSIL)
- Periclaraia, Genus Periclaraia Li & Ding, 1981 † (PECTINIDAE) (FOSSIL)
- Periclaria, Genus Periclaria † (PTERIIDA (unassigned)) (FOSSIL)
- Pericleites, Genus Pericleites Renz , 1910 † (AGATHICERATIDAE) (FOSSIL)
- Periclocystis, syn of: Genus Tengchiena F.C. Baker, 1942 (EUCONULIDAE)
- pericochlion, Japelion pericochlion (L. von Schrenck, 1863) - (BUCCINIDAE)
- pericochlion, Tritonium pericochlion L. von Schrenck, 1863 - syn of: Japelion pericochlion (L. von Schrenck, 1863) - (BUCCINIDAE)
- pericompsus, Capulus pericompsus Whidborne, 1891 † - syn of: Platyceras pericompsus (Whidborne, 1891 †) - (CAPULIDAE) (FOSSIL)
- pericompsus, Platyceras pericompsus (Whidborne, 1891 †) - (PLATYCERATIDAE) (FOSSIL)
- periconis, Callistochiton periconis W.H. Dall, 1908 - (CALLISTOPLACIDAE)
- pericuana, Turbonilla pericuana A.M. Strong, 1949 - (PYRAMIDELLIDAE)
- periculosa, Melina periculosa T. Iredale, 1939 - syn of: Isognomon ephippium (C. Linnaeus, 1758) - (MALLEIDAE)
- periculosum, Strophiops periculosum W.J. Clench, 1934 - (CERIONIDAE)
- PERICYCLIDAE Hyatt, 1900 † - Family (CEPHALOPODA-AMMONOIDEA-GONIATITIDA) (FOSSIL)
- Pericycloceras, syn of: Genus Bransonoceras Miller & Parizek, 1948 † (METALEGOCERATIDAE) (FOSSIL)
- pericycloides, Glaphyrites pericycloides Kullmann, 1962 † - (GLAPHYRITIDAE) (FOSSIL)
- Pericyclus, Genus Pericyclus Mojsisovics , 1882 † (PERICYCLIDAE) (FOSSIL)
- Pericylindrica, syn of: Genus Lanceolaria T.A. Conrad, 1853 (UNIONIDAE)
- Peridactylites, Genus Peridactylites Buckman, 1926 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- Perideriopsis, Genus Perideriopsis S. Putzeys, 1898 (ACHATINIDAE)
- Perideris, syn of: Genus Lignus J.E. Gray, 1834 (ACHATINIDAE)
- perideris, Trajana perideris (W.H. Dall, 1910) - (NASSARIIDAE)
- Peridipsaccus, syn of: Genus Babylonia F. Schlüter, 1838 (BABYLONIIDAE)
- perieilema, Glyphostoma perieilema J. Gardner, 1937 † - (CLATHURELLIDAE) (FOSSIL)
- perieri, Aspalima perieri (P. Fischer in L. de Folin & J.P.L. Périer, 1870) - (LIMOPSIDAE)
- perieri, Tellina perieri V. Bertin - (TELLINIDAE)
- periferialis, Pyrgotrochus periferialis (C. Gemmellaro, 1874 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- periglenes, Sericogyra periglenes B.A. Marshall, 1988 - (SEGUENZIIDAE)
- Periglypta, Genus Periglypta A.J. Jukes-Browne, 1914 (VENERIDAE)
- periglyptus, Fautor periglyptus (B.A. Marshall, 1995) - (CALLIOSTOMATIDAE)
- perigmus, Ocenebra perigmus A. De Gregorio, 1885 - syn of: Ocinebrina edwardsi (B.C.M. Payraudeau, 1826) - (MURICIDAE)
- perignobilis, Hemizaptyx stimpsoni perignobilis (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- perigrapta, Patera perigrapta H.A. Pilsbry, 1894 - (POLYGYRIDAE)
- perigyra, Hypselostoma perigyra W.S.S. Van Benthem-Jutting, 1950 - (HYPSELOSTOMATIDAE)
- perijana, Cucullaea perijana F. Hodson & al., 1927 † - (CUCULLAEIDAE) (FOSSIL)
- perilambanon, Radstockiceras perilambanon C. De Stefani, 1887 † - (OXYNOTICERATIDAE) (FOSSIL)
- perilla, Pseudosimnia perilla C.N. Cate, 1973 - syn of: Diminovula dautzenbergi (F.A. Schilder, 1931) - (OVULIDAE)
- perillustris, Veprichlamys perillustris (T. Iredale, 1925) - (PECTINIDAE)
- perilongata, Bythinella perilongata C. Altimira, 1959 - syn of: Bythinella batalleri A. Bofill, 1925 - (BYTHINELLIDAE)
- perilus, Ocenebra perilus A. De Gregorio, 1885 - syn of: Ocinebrina edwardsi (B.C.M. Payraudeau, 1826) - (MURICIDAE)
- Perilytoceras, Genus Perilytoceras Rulleau, 1997 † (LYTOCERATIDAE) (FOSSIL)
- Perimangelia, Genus Perimangelia J.H. McLean, 2000 (MANGELIIDAE)
- Perimecoceras, Genus Perimecoceras Foerste, 1926 † (NOTHOCERATIDAE) (FOSSIL)
- Perimenia, syn of: Genus Pruvotina T.D.A. Cockerell, 1903 (PRUVOTINIDAE)
- PERIMENIIDAE - syn of Family: PRUVOTINIDAE
- perimense, Epitonium perimense (F.P. Jousseaume, 1912) - (EPITONIIDAE)
- perimensis, Colina perimensis F.P. Jousseaume, 1931 - syn of: Colina pinguis (A. Adams, 1855) - (CERITHIIDAE)
- perimensis, Inella perimensis F.P. Jousseaume, 1898 - (TRIPHORIDAE)
- perimetra, Venericardia perimetra C.J. Maury, 1924 † - (CARDITIDAE) (FOSSIL)
- perimpressa, Troostella perimpressa B. Wade, 1926 † - (ACTEONINIDAE) (FOSSIL)
- perincisa, Oligodia perincisa (W.H. Dall, 1892 †) - (TURRITELLIDAE) (FOSSIL)
- perinconspicua, Macrochlamys perinconspicua H.H. Godwin-Austen - (ARIOPHANTIDAE)
- perinde, Eulimella perinde A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- perinesa, Barbatia perinesa P.G. Oliver & H.C.G. Chesney, 1994 - (ARCIDAE)
- perinetensis, Tropidophora perinetensis E. Fischer-Piette & J. Bedoucha, 1965 - (POMATIIDAE)
- perinflata, Mohrensternia perinflata Friedberg, 1923 † - (RISSOIDAE) (FOSSIL)
- perinflatum, Subschloenbachia perinflatum Spath, 1922 † - (BRANCOCERATIDAE) (FOSSIL)
- perinflatum, Sinumelon perinflatum (L. Pfeiffer, 1864) - (CAMAENIDAE)
- perinflatum, Sinum perinflatum (F. Sacco, 1890 †) - (NATICIDAE) (FOSSIL)
- perinflatum gratiosa, Sinumelon perinflatum gratiosa (L. Pfeiffer, 1864) - (CAMAENIDAE)
- Peringia, Subgenus Hydrobia (Peringia) A. Paladilhe, 1874 (HYDROBIIDAE)
- Peringiella, Genus Peringiella T.A. de M. Monterosato, 1878 (RISSOIDAE)
- periniana, Katosira periniana (A.V.M.D. D'Orbigny, 1853 †) - (SETTSASSIIDAE) (FOSSIL)
- perinii, Marshallopsis perinii A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- perinni, Mauritanica perinni (J.R. Bourguignat, 1876) - (CLAUSILIIDAE)
- perinni polygyra, Mauritanica perinni polygyra (O. Böttger, 1879) - (CLAUSILIIDAE)
- perinsignis, Philbertia perinsignis (E.A. Smith, 1884) - (RAPHITOMIDAE)
- perinsignis, Pleurotoma perinsignis E.A. Smith, 1884 - syn of: Philbertia perinsignis (E.A. Smith, 1884) - (TURRIDAE)
- perinvoluta, Cyrtoclymenia perinvoluta W.K.C. Sun & S. Shen, 1965 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- perinvoluta, Antalis perinvoluta (N.H. Ludbrook, 1954) - (DENTALIIDAE)
- Perioidanoceras, Genus Perioidanoceras Foerste, 1930 † (ACLEISTOCERATIDAE) (FOSSIL)
- periolcus, Arcestes periolcus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- periopsis, Crenavolva periopsis C.N. Cate, 1978 - syn of: Crenavolva virgo (M. Azuma & C.N. Cate, 1971) - (OVULIDAE)
- periostomata, Pomacea periostomata D'Orbigny, 1835 - syn of: Pomacea peristomata (A.V.M.D. D'Orbigny, 1835) - (AMPULLARIIDAE)
- periousia, Callistochiton antiquus periousia E.A. Ashby, 1927 - (CALLISTOPLACIDAE)
- Peripetella, syn of: Genus Rissoina D'Orbigny, 1840 (RISSOINIDAE)
- Peripetoceras, Genus Peripetoceras Hyatt, 1894 † (LIROCERATIDAE) (FOSSIL)
- peripheralis, Aequipecten commutatus peripheralis H.H. Dijkstra & R.N. Kilburn, 2001 - (PECTINIDAE)
- peripherica, Oreohelix peripherica (C.M.F. Ancey, 1881) - (OREOHELICIDAE)
- peripherica albofasciata, Oreohelix peripherica albofasciata (H. Hemphill, 1886) - (OREOHELICIDAE)
- peripherica binneyi, Oreohelix peripherica binneyi (H. Hemphill, 1886) - (OREOHELICIDAE)
- peripherica multicostata, Oreohelix peripherica multicostata (H. Hemphill, 1886) - (OREOHELICIDAE)
- peripherica wasatchensis, Oreohelix peripherica wasatchensis (H. Hemphill, 1886) - (OREOHELICIDAE)
- Peripitoma, Genus Peripitoma C.F. Laseron, 1958 (TORNIDAE)
- peripla, Daphnella peripla (W.H. Dall, 1881) - (RAPHITOMIDAE)
- peripla, Pleurotoma peripla W.H. Dall, 1881 - syn of: Gymnobela chyta (R.B. Watson, 1881) - (TURRIDAE)
- Peripleurites, Genus Peripleurites Mojsisovics , 1893 † (RHABDOCERATIDAE) (FOSSIL)
- Peripleuroceras, syn of: Genus Alocolytoceras Pompeckj, 1896 † (LYTOCERATIDAE) (FOSSIL)
- Periploma, Genus Periploma H.C.F. Schumacher, 1817 (PERIPLOMATIDAE)
- PERIPLOMATIDAE Dall, 1895 - Family (BIVALVIA-HETERODONTA-EUHETERODONTA-ANOMALODESMATA)
- periplomoides, Pseudoneaera periplomoides K. Sakurai & T. Habe in T. Habe, 1961 - (CUSPIDARIIDAE)
- Periplomya, Genus Periplomya Conrad, 1870 † (LATERNULIDAE) (FOSSIL)
- Periplora, syn of: Genus Periploma H.C.F. Schumacher, 1817 (PERIPLOMATIDAE)
- periporon, Albinaria contaminata periporon T.C.M. Kemperman & E. Gittenberger, 1992 - (CLAUSILIIDAE)
- Periptychoceras, Genus Periptychoceras Zhao & al., 1978 † (ARAXOCERATIDAE) (FOSSIL)
- Perirhoe, Genus Perirhoe W.H. Dall, 1908 (TEREBRIDAE)
- periridescens, Isognomon periridescens (B. Wade, 1926 †) - (PTERIIDAE) (FOSSIL)
- Periryua, Subgenus Videna (Periryua) F.C. Baker, 1941 (TROCHOMORPHIDAE)
- peris, Cryptonerita peris Pan, 1977 † - (NERITIDAE) (FOSSIL)
- perisca, Fissurella perisca DeVries, 2008 † - (FISSURELLIDAE) (FOSSIL)
- perisca, Tellina perisca W.H. Dall & C.T. Simpson, 1901 - (TELLINIDAE)
- periscelida, Angiola periscelida W.H. Dall, 1926 - syn of: Angiola longispira (E.A. Smith, 1872) - (PLANAXIDAE)
- periscelida, Turbonilla periscelida W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- periscelida, Gemmula periscelida (W.H. Dall, 1889) - (TURRIDAE)
- periscelidus, Aulacofusus periscelidus (W.H. Dall, 1891) - (BUCCINIDAE)
- periscelidus, Colus periscelidus W.H. Dall, 1891 - syn of: Aulacofusus periscelidus (W.H. Dall, 1891) - (BUCCINIDAE)
- periscelina, Lienardia periscelina C. Hedley, 1922 - (CLATHURELLIDAE)
- periscelis, Carelia periscelis C.M. Cooke, 1931 - (AMASTRIDAE)
- periscopia, Solariella periscopia W.H. Dall, 1927 - (SOLARIELLIDAE)
- periscopiana, Erycina periscopiana W.H. Dall, 1899 - (LASAEIDAE)
- periscopium, Vermetus periscopium K.H. Barnard, 1963 - (VERMETIDAE)
- periscus, Mytilus periscus Cox, 1936 † - (MYTILIDAE) (FOSSIL)
- perisphincta, Peverilia perisphincta W.J. Arkell, 1941 † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- perisphinctes, Pseudobigotella perisphinctes Buckman † - syn of: Bigotites perisphinctes (Buckman †) - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Perisphinctes, Genus Perisphinctes Bukowski, 1887 † (PERISPHINCTIDAE) (FOSSIL)
- perisphinctes, Bigotites perisphinctes (Buckman †) - (PERISPHINCTIDAE) (FOSSIL)
- PERISPHINCTIDAE Steinmann, 1890 † - Family (CEPHALOPODA-AMMONOIDEA-AMMONITIDA) (FOSSIL)
- perisphinctoides, Deroceras perisphinctoides Fucini, 1903 † - syn of: Jamesonites spoliatus (F.A. von Quenstedt, 1884 †) - (AGRIOLIMACIDAE) (FOSSIL)
- perissa, Mangaoa perissa C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- perissa, Asperdaphne perissa (C. Hedley, 1909) - (RAPHITOMIDAE)
- Perisserosa, Genus Perisserosa T. Iredale, 1930 (CYPRAEIDAE)
- PERISSITYIDAE Popenoe & Saul, 1987 † - Family (GASTROPODA-CAENOGASTROPODA-NEOGASTROPODA) (FOSSIL)
- Perissitys, Genus Perissitys Stewart, 1927 † (TURBINELLIDAE) (FOSSIL)
- Perissodon, syn of: Genus Rangia C. des Moulins, 1828 (MACTRIDAE)
- perissodonta, Gulella perissodonta (R. Sturany, 1898) - (STREPTAXIDAE)
- Perissodonta, Genus Perissodonta E.C. Von Martens, 1878 (STRUTHIOLARIIDAE)
- perissokomos, Kulindroplax perissokomos Sutton & al., 2012 † - (APLACOPHORA (unassigned)) (FOSSIL)
- Perissolax, Genus Perissolax Gabb, 1861 † (FICIDAE) (FOSSIL)
- Perissonota, syn of: Genus Perrisonota Conrad, 1869 † (MALLETIIDAE) (FOSSIL)
- Perissoptera, Genus Perissoptera Tate, 1865 † (APORRHAIDAE) (FOSSIL)
- perissus, Rocroithys perissus A.V. Sysoev & P. Bouchet, 2001 - (RAPHITOMIDAE)
- Peristarium, Subgenus Fulgurofusus (Peristarium) F.M. Bayer, 1971 (TURBINELLIDAE)
- peristephes, Semicassis granulata peristephes (H.A. Pilsbry & J.T.L. McGinty, 1939) - (CASSIDAE)
- Peristera, syn of: Genus Columbella J.B.P.A. Lamarck, 1799 (COLUMBELLIDAE)
- peristera, Clavus peristera J.C. Melvill, 1927 - (DRILLIIDAE)
- Peristernia, Genus Peristernia O.A.L. Mörch, 1852 (FASCIOLARIIDAE)
- peristernioides, Lienardia peristernioides M.M. Schepman, 1913 - (CLATHURELLIDAE)
- peristernoides, Glyphostoma peristernoides M.M. Schepman, 1913 - syn of: Lienardia peristernioides M.M. Schepman, 1913 - (CLATHURELLIDAE)
- Peristichia, Genus Peristichia W.H. Dall, 1889 (PYRAMIDELLIDAE)
- peristicta, Solariella peristicta B.A. Marshall, 1999 - (SOLARIELLIDAE)
- peristicta, Cymbiola pulchra peristicta (D.F. McMichael, 1963) - (VOLUTIDAE)
- Peristoma, Subgenus Ena (Peristoma) I. Krynicki, 1833 (ENIDAE)
- Peristomacea, syn of: Genus Trochoidea T. Brown, 1827 (HYGROMIIDAE)
- peristomata, Pomacea peristomata (A.V.M.D. D'Orbigny, 1835) - (AMPULLARIIDAE)
- peristomatus, Bostryx stelzneri peristomatus A. Doering, 1879 - (BULIMULIDAE)
- peristomatus, Potamolithus peristomatus (A.V.M.D. D'Orbigny, 1835) - (LITHOGLYPHIDAE)
- peristomatus paraconispirus, Bostryx stelzneri peristomatus paraconispirus J.J. Parodíz, 1948 - (BULIMULIDAE)
- perita, Favartia perita (R.B. Hinds, 1844) - (MURICIDAE)
- perita, Murexiella perita R.B. Hinds, 1844 - syn of: Favartia perita (R.B. Hinds, 1844) - (MURICIDAE)
- perita, Rissoina perita W.J. Sleurs, 1994 - (RISSOINIDAE)
- peritaphros, Cavilinga peritaphros (K.H. Barnard, 1964) - (LUCINIDAE)
- peritaphros, Phacoides peritaphros K.H. Barnard, 1964 - syn of: Cavilinga peritaphros (K.H. Barnard, 1964) - (LUCINIDAE)
- peritrema, Nassa peritrema J.E. Tenison-Woods, 1880 - syn of: Nassarius nigellus (L.A. Reeve, 1854) - (NASSARIIDAE)
- peritricha, Helix peritricha O. Böttger, 1885 - syn of: Josephinella subzonata (A. Mousson, 1859) - (HELICIDAE)
- Peritrochia, Genus Peritrochia Girty , 1909 † (VIDRIOCERATIDAE) (FOSSIL)
- Peritrophon, Genus Peritrophon Marwick, 1931 † (MURICIDAE) (FOSSIL)
- peritus, Murex peritus R.B. Hinds, 1844 - syn of: Favartia perita (R.B. Hinds, 1844) - (MURICIDAE)
- periwonensis, Megalacron periwonensis R.K. Dell, 1955 - (CAMAENIDAE)
- perizomata, Worthenia perizomata White, 1881 † - syn of: Worthenia speciosa (F.B. Meek & A.H. Worthen, 1860 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perjucundus, Kumatostephanus perjucundus (Buckman, 1927 †) - (STEPHANOCERATIDAE) (FOSSIL)
- perkinsi, Tornatellides perkinsi (E.R. Sykes, 1900) - (ACHATINELLIDAE)
- perkinsi, Newcombia perkinsi E.R. Sykes, 1896 - (ACHATINELLIDAE)
- perkinsi, Auriculella perkinsi E.R. Sykes - syn of: Auriculella auricula (A.E.J. Férussac, 1821) - (ACHATINELLIDAE)
- perkinsi, Deroceras perkinsi W.E. Collinge, 1896 - (AGRIOLIMACIDAE)
- perkinsi, Leptachatina perkinsi E.R. Sykes, 1896 - (AMASTRIDAE)
- perkinsi, Macrochlamys perkinsi E.R. Sykes, 1896 - syn of: Hiona perkinsi (E.R. Sykes, 1896) - (ARIOPHANTIDAE)
- perkinsi, Hiona perkinsi (E.R. Sykes, 1896) - (EUCONULIDAE)
- perkinsi, Euomphalus perkinsi R.P. Whitfield, 1890 † - syn of: Malayaspira perkinsi (R.P. Whitfield, 1890 †) - (EUOMPHALIDAE) (FOSSIL)
- perkinsi, Ooceras perkinsi Ruedemann, 1906 † - (OONOCERATIDAE) (FOSSIL)
- perkinsi, Malayaspira perkinsi (R.P. Whitfield, 1890 †) - (OPHILETIDAE) (FOSSIL)
- perkinsi, Proteoceras perkinsi (Ruedemann, 1906 †) - (PROTEOCERATIDAE) (FOSSIL)
- perkinsi, Tarphyceras perkinsi R.P. Whitfield, 1897 † - (TARPHYCERATIDAE) (FOSSIL)
- perkinsi acicula, Tornatellides perkinsi acicula H.A. Pilsbry & C.M. Cooke, 1915 - (ACHATINELLIDAE)
- perkinsi maunahoomae, Hiona perkinsi maunahoomae H.B. Baker, 1940 - (EUCONULIDAE)
- perkinsi poholuae, Hiona perkinsi poholuae H.B. Baker, 1940 - (EUCONULIDAE)
- Perkinsoceras, Genus Perkinsoceras Flower, 1976 † (ENDOCERIDA (unassigned)) (FOSSIL)
- perknasteri, Asterophila perknasteri A. Warén in A. Warén & L.M. Lewis, 1994 - (EULIMIDAE)
- perksi, Surcula perksi J.C. Verco, 1896 - syn of: Epidirona perksi (J.C. Verco, 1896) - (CLAVATULIDAE)
- perksi, Mitra carbonaria perksi J.C. Verco, 1908 - (MITRIDAE)
- perksi, Epidirona perksi (J.C. Verco, 1896) - (PSEUDOMELATOMIDAE)
- perla, Cetoconcha perla W.H. Dall, 1908 - syn of: Cetomya perla (W.H. Dall, 1908) - (CETOCONCHIDAE)
- perla, Colubraria perla M. Smith, 1947 - syn of: Tritonoharpa siphonata (L.A. Reeve, 1844) - (COLUBRARIIDAE)
- perla, Hyalina perla (F.P. Marrat, 1876) - (MARGINELLIDAE)
- perla, Marginella perla F.P. Marrat, 1876 - syn of: Hyalina perla (F.P. Marrat, 1876) - (MARGINELLIDAE)
- perla, Euspira perla W.H. Dall, 1889 - syn of: Euspira fringilla (W.H. Dall, 1881) - (NATICIDAE)
- perla, Ovula perla P.F. Röding, 1798 - syn of: Calpurnus verrucosus (C. Linnaeus, 1758) - (OVULIDAE)
- perla, Cetomya perla (W.H. Dall, 1908) - (POROMYIDAE)
- perla, Poromya perla W.H. Dall, 1908 - syn of: Cetomya perla (W.H. Dall, 1908) - (POROMYIDAE)
- perla, Crassispira perla M. Smith, 1947 - syn of: Crassispira maura (G.B. I Sowerby, 1834) - (PSEUDOMELATOMIDAE)
- perlabiata, Anadara perlabiata Grant & H.R. Gale, 1931 - (ARCIDAE)
- perlabiata, Arca perlabiata J. Grant & H.R. Gale, 1931 - syn of: Anadara perlabiata Grant & H.R. Gale, 1931 - (ARCIDAE)
- perlacea, Erosaria perlacea G.R. Sulliotti, 1924 - syn of: Erosaria erosa (C. Linnaeus, 1758) - (CYPRAEIDAE)
- perlactea, Albinaria hians perlactea H. Nordsieck, 1974 - (CLAUSILIIDAE)
- perlae, Zoila perlae C.M. Lopez & C.S. Chiang, 1975 - (CYPRAEIDAE)
- perlaeve, Spyroceras perlaeve E. Strand, 1934 † - (SPYROCERATIDAE) (FOSSIL)
- perlaevis, Euplica perlaevis G.B. III Sowerby, 1905 - syn of: Euplica scripta (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- perlaevis, Columbella perlaevis G.B. III Sowerby, 1905 - syn of: Euplica scripta (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- perlaevis, Cieneguiticeras perlaevis (Steuer, 1897 †) - (OPPELIIDAE) (FOSSIL)
- perlaevis, Mesomphix perlaevis H.A. Pilsbry, 1900 - (ZONITIDAE)
- Perlamater, syn of: Genus Pinctada P.F. Röding, 1798 (PTERIIDAE)
- perlamelloides, Semele perlamelloides C.J. Maury, 1910 † - syn of: Semele chipolana W.H. Dall, 1900 † - (SEMELIDAE) (FOSSIL)
- perlamellosa, Semele perlamellosa A. Heilprin, 1887 † - (SEMELIDAE) (FOSSIL)
- perlamellosum, Ptychocerithium perlamellosum E.W. Vredenburg, 1928 † - (CERITHIIDAE) (FOSSIL)
- perlamellosus, Paupospira perlamellosus Ulrich & Scofield, 1897 † - syn of: Paupospira tropidophora (F.B. Meek, 1873 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perlaminosa, Humilaria perlaminosa (T.A. Conrad, 1855 †) - (VENERIDAE) (FOSSIL)
- perlaqueata, Tachyrhynchus perlaqueata (T.A. Conrad, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- perlata, Lirobarleeia perlata (O.A.L. Mörch, 1860) - (BARLEEIIDAE)
- perlata, Phenatoma perlata (H.H. Suter, 1917 †) - (BORSONIIDAE) (FOSSIL)
- perlata, Chauvetia perlata (O.A.L. Mörch, 1860) - (BUCCINIDAE)
- perlata, Engina perlata H.C. Küster, 1858 - syn of: Engina natalensis J.C. Melvill, 1895 - (BUCCINIDAE)
- perlata, Cerithiopsis perlata T.A. de M. Monterosato, 1889 - (CERITHIOPSIDAE)
- perlata, Mitra perlata P.F. Röding, 1798 - syn of: Nebularia chrysostoma (W.J. Broderip, 1836) - (MITRIDAE)
- perlata, Nassaria perlata G.T. Poppe & K. Fraussen, 2004 - (NASSARIIDAE)
- perlata, Nassa perlata F.P. Marrat, 1880 - syn of: Nassarius graniferus (L.C. Kiener, 1834) - (NASSARIIDAE)
- perlata, Pyropsis perlata T.A. Conrad, 1860 † - (PERISSITYIDAE) (FOSSIL)
- perlata, Pleurotomaria perlata J.W. Hall, 1852 † - (PLEUROTOMARIIDAE) (FOSSIL)
- perlata, Syrnola perlata T.A. Conrad 1860 - (PYRAMIDELLIDAE)
- perlata, Alvinia perlata O.A.L. Mörch, 1860 - syn of: Lirobarleeia perlata (O.A.L. Mörch, 1860) - (RISSOIDAE)
- perlata, Strepsidura perlata T.A. Conrad, 1858 † - (STREPSIDURIDAE) (FOSSIL)
- perlata, Plicigulella perlata M. Connolly, 1922 - (STREPTAXIDAE)
- perlata, Mastonia perlata (A. Issel, 1869) - (TRIPHORIDAE)
- perlata, Triphora perlata A. Issel, 1869 - syn of: Mastonia perlata (A. Issel, 1869) - (TRIPHORIDAE)
- perlata, Carcinostemma perlata (J. Gundlach in L. Pfeiffer, 1859) - (UROCOPTIDAE)
- perlatum, Ovulatibuccinum perlatum K. Fraussen & M. Chino, 2009 - (BUCCINIDAE)
- perlatum, Boliteceras perlatum Whitehouse, 1928 † - (DESMOCERATIDAE) (FOSSIL)
- perlatum, Lunuloceras perlatum (F.A. von Quenstedt, 1887 †) - (OPPELIIDAE) (FOSSIL)
- perlatum, Chondropoma perlatum (J. Gundlach in F. Poey, 1858) - (POMATIIDAE)
- perlatum, Ponticeras perlatum (J.W. Hall, 1874 †) - (PONTICERATIDAE) (FOSSIL)
- perlatum, Rhymmoceras perlatum Ruzhentsev & Bogoslovskaya, 1971 † - (RHYMMOCERATIDAE) (FOSSIL)
- perlatum, Pleurotoma perlatum E. Réquien, 1848 - syn of: Chauvetia brunnea (E. Donovan, 1804) - (TURRIDAE)
- perlatus, Crassicantharus perlatus K. Fraussen & P. Stahlschmidt, 2015 - (BUCCINIDAE)
- perlatus, Loligopsis perlatus A. Risso, 1854 - syn of: Chiroteuthis veranii (A.E.J. Férussac, 1835) - (IDIOSEPIIDAE)
- perlatus, Modulus perlatus (J.F. Gmelin, 1791) - (MODULIDAE)
- perlatus, Eutrephoceras perlatus (Morton, 1834 †) - (NAUTILIDAE) (FOSSIL)
- perlatus, Onychoteuthis perlatus A. Risso, 1854 - syn of: Chiroteuthis veranii (A.E.J. Férussac, 1835) - (ONYCHOTEUTHIDAE)
- perlatus, Circulus perlatus J.P.L. Pelseneer, 1903 - (TORNIDAE)
- perlatus, Trochus perlatus J.F. Gmelin, 1791 - syn of: Modulus modulus (C. Linnaeus, 1758) - (TROCHIDAE)
- perlatus, Marmarostoma perlatus Abrad, 1946 † - (TURBINIDAE) (FOSSIL)
- perlatus, Unio perlatus I. Lea, 1863 - syn of: Elliptio arctata T.A. Conrad, 1834 - (UNIONIDAE)
- perlepida, Nuculana perlepida R.J.L. Guppy, 1874 - syn of: Nuculana vitrea (A.V.M.D. D'Orbigny, 1853) - (NUCULANIDAE)
- perlepida, Turbonilla perlepida A.E. Verrill, 1885 - (PYRAMIDELLIDAE)
- perlepidus, Conus perlepidus Pilsbry & Johnson, 1917 † - (CONIDAE) (FOSSIL)
- perli, Roloboceras perli (Spath †) - (DOUVILLEICERATIDAE) (FOSSIL)
- perliberalis, Biplex perliberalis C. Beets, 1984 † - (RANELLIDAE) (FOSSIL)
- perlicatum, Fuciniceras perlicatum (Fucini, 1905 †) - (HILDOCERATIDAE) (FOSSIL)
- perligera, Horologica perligera (K.H.J. Thiele, 1930) - (CERITHIOPSIDAE)
- perligera, Lucilina perligera K.H.J. Thiele, 1909 - (CHITONIDAE)
- perligera, Mangelia perligera K.H.J. Thiele, 1925 - (MANGELIIDAE)
- perligera, Nassa perligera K.H.J. Thiele, 1925 - syn of: Nassarius bellus (F.P. Marrat, 1877) - (NASSARIIDAE)
- perlimbata, Luciella perlimbata A.W. Grabau, 1931 † - (LUCIELLIDAE) (FOSSIL)
- perlineata, Anomia perlineata B. Wade, 1926 † - (ANOMIIDAE) (FOSSIL)
- perlineata, Natica perlineata W.H. Dall, 1889 - (NATICIDAE)
- Perlisia, Genus Perlisia J.R. le B. Tomlin, 1948 (PUPINIDAE)
- perlissa, Etrema perlissa (E.A. Smith, 1904) - (CLATHURELLIDAE)
- perlobatum, Hypophylloceras perlobatum (G. Sayn, 1895 †) - (PHYLLOCERATIDAE) (FOSSIL)
- perlobulatum, Lobolytoceras perlobulatum S.S. Buckman † - (LYTOCERATIDAE) (FOSSIL)
- perlonga, Asthenotoma perlonga (K. Martin, 1884 †) - (BORSONIIDAE) (FOSSIL)
- perlonga, Abida perlonga P. Fagot, 1888 - syn of: Abida secale affinis E.A. Rossmässler, 1839 - (CHONDRINIDAE)
- perlonga, Graptacme perlonga (W.H. Dall, 1881) - (DENTALIIDAE)
- perlonga, Laevidentalium perlonga W.H. Dall, 1881 - syn of: Graptacme perlonga (W.H. Dall, 1881) - (LAEVIDENTALIIDAE)
- perlonga, Loxonema perlonga J. Perner, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- perlonga, Pseudorhaphitoma perlonga (J.C. Melvill, 1899) - (MANGELIIDAE)
- perlonga, Mitra perlonga K. Martin, 1884 † - syn of: Asthenotoma perlonga (K. Martin, 1884 †) - (MITRIDAE) (FOSSIL)
- perlonga, Coelocaulus perlonga J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- perlonga, Nakamuranaia perlonga H. Guo, 1987 † - (NAKAMURANAIADIDAE) (FOSSIL)
- perlonga, Chemnitzia perlonga Stoppani, 1858 † - syn of: Trypanostylus geographicus Stoppani, 1858 † - (PYRAMIDELLIDAE) (FOSSIL)
- perlonga, Pragamira perlonga (Horný, 1963 †) - (TRYBLIDIIDAE) (FOSSIL)
- perlonga, Tetrentodon perlonga (C. de la Torre, 1932) - (UROCOPTIDAE)
- perlonga, Lyropupa perlonga (W.H. Pease, 1871) - (VERTIGINIDAE)
- perlonga cylindrata, Lyropupa perlonga cylindrata H.A. Pilsbry & C.M. Cooke, 1920 - (VERTIGINIDAE)
- perlonga filicostata, Lyropupa perlonga filicostata C.M. Cooke & H.A. Pilsbry, 1920 - (VERTIGINIDAE)
- perlonga interrupta, Lyropupa perlonga interrupta H.A. Pilsbry & C.M. Cooke, 1920 - (VERTIGINIDAE)
- perlongum, Dentalium perlongum W.H. Dall, 1881 - syn of: Graptacme perlonga (W.H. Dall, 1881) - (DENTALIIDAE)
- perlongus, Philoxene perlongus J. Perner, 1903 † - (EUOMPHALIDAE) (FOSSIL)
- perlongus, Pterynotus perlongus (L.M.D. Bellardi, 1872 †) - (MURICIDAE) (FOSSIL)
- perlongus, Theodoxus zografi perlongus E. Jekelius, 1944 † - (NERITIDAE) (FOSSIL)
- perlongus, Orthalicus princeps perlongus (H.A. Pilsbry, 1899) - (ORTHALICIDAE)
- perlora, Anodonta perlora R. Schröder, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- perlucea, Onchidoris perlucea J.A. Ortea & L. Moro, 2014 - (ONCHIDORIDIDAE)
- perlucens, Fruticicola perlucens (O.W. Von Rosen, 1901) - (BRADYBAENIDAE)
- perlucens, Caspiophaedusa perlucens (O. Böttger, 1877) - (CLAUSILIIDAE)
- perlucens, Philonesia perlucens (C.M.F. Ancey, 1889) - (EUCONULIDAE)
- perlucens, Gymnodoris perlucens J.J. Risbec, 1928 - syn of: Gymnodoris bicolor (J. Alder & A. Hancock, 1864) - (GYMNODORIDIDAE)
- perlucens, Helix perlucens O.W. Von Rosen, 1901 - syn of: Fruticicola perlucens (O.W. Von Rosen, 1901) - (HELICIDAE)
- perlucens, Laevaricella perlucens (R.J.L. Guppy, 1868) - (OLEACINIDAE)
- perlucens, Glandina perlucens R.J.L. Guppy, 1868 - syn of: Laevaricella perlucens (R.J.L. Guppy, 1868) - (SPIRAXIDAE)
- perlucens, Unio perlucens I. Lea, 1863 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- perlucens gilanensis, Caspiophaedusa perlucens gilanensis H. Nordsieck, 1978 - (CLAUSILIIDAE)
- perlucida, Microcystina perlucida (A. Issel, 1874) - (ARIOPHANTIDAE)
- perlucida, Astyris perlucida W.H. Dall, 1927 - (COLUMBELLIDAE)
- perlucida, Perlucidiscala perlucida F.P. Jousseaume, 1912 - syn of: Epitonium perlucidum (F.P. Jousseaume, 1912) - (EPITONIIDAE)
- perlucida, Dupontia perlucida (A. Adams, 1867) - (HELICARIONIDAE)
- perlucida, Serrata perlucida F. Boyer, 2008 - (MARGINELLIDAE)
- perlucida, Bullia perlucida L. Bozzetti, 2014 - (NASSARIIDAE)
- perlucida, Nerita perlucida A.E.M. Cossmann & G. Pissarro † - (NERITIDAE) (FOSSIL)
- perlucida, Rissoina perlucida Cossmann, 1899 † - (RISSOINIDAE) (FOSSIL)
- perlucidens, Laevaricella perlucidens R.J.L. Guppy, 1868 - syn of: Laevaricella perlucens (R.J.L. Guppy, 1868) - (OLEACINIDAE)
- Perlucidiscala, syn of: Genus Epitonium P.F. Röding, 1798 (EPITONIIDAE)
- perlucidula, Leiocithara perlucidula R.N. Kilburn, 1992 - (MANGELIIDAE)
- perlucidum, Leptopoma perlucidum (J.P.S. Grateloup, 1840) - (CYCLOPHORIDAE)
- perlucidum, Epitonium perlucidum (F.P. Jousseaume, 1912) - (EPITONIIDAE)
- perlucidus, Drymaeus perlucidus (J.B. von Spix, 1827) - (BULIMULIDAE)
- perlucidus, Joculator perlucidus A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- perlucidus, Tentaoculus perlucidus L.I. Moskalev, 1976 - (PSEUDOCOCCULINIDAE)
- perlucidus, Hyalimax perlucidus (J.R.C. Quoy & J.P. Gaimard, 1832) - (SUCCINEIDAE)
- perluna costigera, Nuculana perluna costigera W. Leche, 1883 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- permabilis, Neoiphinoe permabilis (W.H. Dall, 1871) - (CAPULIDAE)
- permacra, Metaxia permacra P. Lozouet, 1999 - (TRIPHORIDAE)
- permaestus, Murex permaestus C. Hedley, 1915 - syn of: Chicoreus capucinus (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- permaestus, Chicoreus permaestus C. Hedley, 1915 - syn of: Chicoreus capucinus (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- permagna, Neomenia permagna L. Salvini-Plawén, 1978 - (NEOMENIIDAE)
- permagna, Pleurotomella permagna A.E. Verrill, 1884 - (RAPHITOMIDAE)
- permagna, Pusula permagna (C.W. Johnson, 1910 †) - (TRIVIIDAE) (FOSSIL)
- permagna, Trivia permagna C. Linnaeus, 1758 - syn of: Pusula pediculus (C. Linnaeus, 1758) - (TRIVIIDAE)
- permagna, Venus permagna T.A. Conrad, 1838 - syn of: Mercenaria campechiensis (J.F. Gmelin, 1791) - (VENERIDAE)
- permagna bermontiana, Niveria permagna bermontiana E.J. Petuch, 1994 - syn of: Pusula pediculus (C. Linnaeus, 1758) - (TRIVIIDAE)
- permagnum, Calliostoma permagnum W.H. Dall, 1892 † - (CALLIOSTOMATIDAE) (FOSSIL)
- permanenta, Lymnaea permanenta Miloševic, 1981 † - (LYMNAEIDAE) (FOSSIL)
- Permanomia, Genus Permanomia Newell & Boyd, 1970 † (PERMANOMIIDAE) (FOSSIL)
- PERMANOMIIDAE Carter, 1990 † - Family (BIVALVIA-PTERIOMORPHIA-PECTINIDA) (FOSSIL)
- permarginata, Cypraeovula algoensis permarginata F.Jr. Lorenz, 1989 - (CYPRAEIDAE)
- permariella, Babella yabei permariella S. Nomura, 1938 - (PYRAMIDELLIDAE)
- Permartella, Genus Permartella Yancey, 1985 † (ASTARTIDAE) (FOSSIL)
- permellita, Aegista permellita P.M. Heude, 1886 - (BRADYBAENIDAE)
- permembranacea, Halolimnohelix permembranacea H.B. Preston, 1912 - syn of: Bulinus permembranaceus H.B. Preston, 1912 - (HALOLIMNOHELICIDAE)
- permembranaceus, Bulinus permembranaceus H.B. Preston, 1912 - (PLANORBIDAE)
- permena, Corbicula permena T. Iredale - syn of: Corbiculina australis (G.P. Deshayes, 1830) - (CYRENIDAE)
- permiana, Acteonina permiana Hanger & Strong, 1998 † - (ACTEONINIDAE) (FOSSIL)
- permiana, Arca permiana d'Orbigny, 1850 † - syn of: Parallelodon kingiana (de Verneuil, 1845 †) - (ARCIDAE) (FOSSIL)
- permiana, Anematina permiana (Jakowlew, 1899 †) - (ELASMONEMATIDAE) (FOSSIL)
- permiana, Gosseletina permiana Batten, 1989 † - (GOSSELETINIDAE) (FOSSIL)
- permiana, Elimata permiana (King, 1850 †) - (LIMIDAE) (FOSSIL)
- permiana, Loxonema permiana Beede, 1907 † - syn of: Streptacis permiana (Beede, 1907 †) - (LOXONEMATIDAE) (FOSSIL)
- permiana, Trypanocochlea permiana Xi, 1974 † - (MURCHISONIIDAE) (FOSSIL)
- permiana, Myalina permiana Shumard, 1860 † - (MYALINIDAE) (FOSSIL)
- permiana, Prodiozoptyxis permiana Batten, 1985 † - (NERINEIDAE) (FOSSIL)
- permiana, Palaeosolen permiana C.O. Waterhouse, 1980 † - (ORTHONOTIDAE) (FOSSIL)
- permiana, Pleurotomaria permiana King, 1848 † - syn of: Mourlonia antrina (von Schlotheim, 1816 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- permiana, Protorcula permiana A. Nützel & Nakazawa, 2012 † - (PROTORCULIDAE) (FOSSIL)
- permiana, Microptychis permiana Batten, 1985 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- permiana, Streptacis permiana (Beede, 1907 †) - (STREPTACIDIDAE) (FOSSIL)
- permianum, Permodomatoceras permianum I.S. Barskov & Shilovsky, 2014 † - (DOMATOCERATIDAE) (FOSSIL)
- permianus, Bellerophon permianus Netchaev, 1894 † - (BELLEROPHONTIDAE) (FOSSIL)
- permianus, Trochonodus permianus A. Nützel & Nakazawa, 2012 † - (EUCYCLIDAE) (FOSSIL)
- permianus, Straparollus permianus (King, 1848 †) - (EUOMPHALIDAE) (FOSSIL)
- permianus, Ananias permianus Batten, 1989 † - (GOSSELETINIDAE) (FOSSIL)
- permianus, Pyramus permianus Lutkevitch & Lobanova, 1960 † - (MEGADESMIDAE) (FOSSIL)
- permianus, Lithophaga permianus Frebold, 1933 † - (MYTILIDAE) (FOSSIL)
- permianus, Anomphalodes permianus King, 1848 † - syn of: Straparollus permianus (King, 1848 †) - (PLANORBIDAE) (FOSSIL)
- permianus, Strophostylus permianus Beede, 1907 † - syn of: Naticopsis transversa (Beede, 1907 †) - (PLATYCERATIDAE) (FOSSIL)
- permianus, Hesperiella permianus Batten, 1989 † - (PORCELLIIDAE) (FOSSIL)
- permianus, Pseudomonotis permianus Maslennikov, 1935 † - (PSEUDOMONOTIDAE) (FOSSIL)
- permianus, Turbo permianus King, 1848 † - syn of: Tunstallia helicina (von Schlotheim, 1820 †) - (TURBINIDAE) (FOSSIL)
- permica, Evenia permica (Newell, 1955 †) - (ATOMODESMATIDAE) (FOSSIL)
- permica, Cypricardinia permica Licharew, 1931 † - (CYPRICARDINIIDAE) (FOSSIL)
- permica, Naticopsis permica Netchaev, 1894 † - (DELPHINULOPSIDAE) (FOSSIL)
- permica, Monachoides permica J.R. Bourguignat - syn of: Perforatella incarnata (O.F. Müller, 1774) - (HYGROMIIDAE)
- permica, Posidonia permica Newell, 1955 † - syn of: Evenia permica (Newell, 1955 †) - (POSIDONIIDAE) (FOSSIL)
- permicum, Cerithioides permicum Licharev, 1967 † - (GONIASMATIDAE) (FOSSIL)
- permicus, Tylonautilus permicus I. Hayasaka, 1957 † - (GZHELOCERATIDAE) (FOSSIL)
- permicus, Cardiella permicus Pavlov, 1967 † - (MARATHONITIDAE) (FOSSIL)
- permicus, Neopronorites permicus (Tchernow, 1907 †) - (PRONORITIDAE) (FOSSIL)
- permicus, Macrochilina permicus Netchaev, 1894 † - syn of: Strobeus welleri Knight, 1931 † - (SOLENISCIDAE) (FOSSIL)
- perminima, Vitreolina perminima (J.G. Jeffreys, 1883) - (EULIMIDAE)
- perminima, Mangelia perminima W.H. Turton, 1932 - (MANGELIIDAE)
- perminima, Granulina perminima (G.B. III Sowerby, 1894) - (MARGINELLIDAE)
- perminima, Austronucula perminima (T.A. de M. Monterosato, 1875) - (NUCULIDAE)
- perminima, Nucula perminima T.A. de M. Monterosato, 1875 - syn of: Austronucula perminima (T.A. de M. Monterosato, 1875) - (NUCULIDAE)
- perminima, Turbonilla perminima W.H. Turton, 1932 - (PYRAMIDELLIDAE)
- perminima, Crisilla perminima (A. Manzoni, 1868) - (RISSOIDAE)
- perminima altaspira, Crisilla perminima altaspira F. Nordsieck, 1972 - (RISSOIDAE)
- perminuta, Americominella perminuta (W.H. Dall, 1927) - (BUCCINIDAE)
- perminuta, Eucochlis perminuta Knight, 1933 † - (EUCOCHLIDAE) (FOSSIL)
- perminuta, Buchozia perminuta A.E.M. Cossmann, 1923 † - (MANGELIIDAE) (FOSSIL)
- perminuta, Buchozia perminuta A.E.M. Cossmann, 1923 † - syn of: Fusulculus perminutus A.E.M. Cossmann, 1923 † - (MANGELIIDAE) (FOSSIL)
- perminuta, Mitra perminuta (A. Braun in C.L.F. von Sandberger, 1863 †) - (MITRIDAE) (FOSSIL)
- perminuta, Plocezyga perminuta Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- perminuta, Paralaoma perminuta H.B. Preston, 1913 - (PUNCTIDAE)
- perminutus, Fusulculus perminutus A.E.M. Cossmann, 1923 † - (BENTHOBIIDAE) (FOSSIL)
- perminutus, Siphonorbis perminutus W.H. Dall, 1927 - syn of: Americominella perminuta (W.H. Dall, 1927) - (BUCCINIDAE)
- perminutus, Fusinus perminutus W.H. Dall, 1927 - syn of: Americominella perminuta (W.H. Dall, 1927) - (FASCIOLARIIDAE)
- permira, Spiraxis permira C.M.F. Ancey, 1904 - (SPIRAXIDAE)
- permirum, Parvamussium permirum (P. Dautzenberg, 1925) - (PROPEAMUSSIIDAE)
- permirus, Tortaxis permirus (C.M.F. Ancey, 1903) - (SUBULINIDAE)
- permiscere, Lienardia permiscere G.W. Nowell-Usticke, 1969 - syn of: Daphnella chrysoleuca (J.C. Melvill, 1923) - (CLATHURELLIDAE)
- permiscere, Truncadaphne permiscere (G.W. Nowell-Usticke, 1969) - (RAPHITOMIDAE)
- permitica, Pholadella permitica Zhang, 1977 † - (PACHYDOMIDAE) (FOSSIL)
- permixta, Engina permixta G.T. Watters & K. Fraussen, 2015 - (BUCCINIDAE)
- permixta, Niveria permixta (G.J. De Cristofori & G. Jan, 1832) - (TRIVIIDAE)
- permocarbonica, Astartella permocarbonica Tschernyschew, 1885 † - (ASTARTIDAE) (FOSSIL)
- permocarbonicus, Stuckenbergispira permocarbonicus (Stuckenberg, 1898 †) - (PLATYCERATIDAE) (FOSSIL)
- Permoceramus, Genus Permoceramus Waterhouse, 1970 † (PTERIIDA (unassigned)) (FOSSIL)
- Permoceras, Genus Permoceras Miller & Collinson, 1953 † (PERMOCERATIDAE) (FOSSIL)
- PERMOCERATIDAE Miller & Collinson, 1953 † - Family (CEPHALOPODA-NAUTILOIDEA-NAUTILIDA) (FOSSIL)
- Permocerithium, Genus Permocerithium Nützel & Nakazawa, 2012 † (PROPUPASPIRIDAE) (FOSSIL)
- Permochiton, Genus Permochiton Iredale & Hull, 1926 † (NEOLORICATA (unassigned)) (FOSSIL)
- Permoconcha, Genus Permoconcha Licharew, 1967 † (PORTLOCKIELLIDAE) (FOSSIL)
- Permocossmannina, Genus Permocossmannina Mazaev, 2015 † (TUBIFERIDAE) (FOSSIL)
- permodesta, Angaria permodesta (K. Martin, 1914 †) - (ANGARIIDAE) (FOSSIL)
- permodesta, Surcula permodesta K. Martin, 1914 † - syn of: Pentagoniturricula permodesta (K. Martin, 1914 †) - (CLAVATULIDAE) (FOSSIL)
- permodesta, Alia permodesta (W.H. Dall, 1890) - (COLUMBELLIDAE)
- permodesta, Mitrella permodesta W.H. Dall, 1890 - syn of: Alia permodesta (W.H. Dall, 1890) - (COLUMBELLIDAE)
- permodesta, Columbella permodesta W.H. Dall, 1890 - syn of: Alia permodesta (W.H. Dall, 1890) - (COLUMBELLIDAE)
- permodesta, Epitonium permodesta C.B. Adams, 1845 - syn of: Epitonium venosum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- permodesta, Vitrea permodesta J.R. Bourguignat, 1883 - syn of: Vitrea contracta (C.A. Westerlund, 1871) - (PRISTILOMATIDAE)
- permodesta, Hawaiia minuscula permodesta (H. Strebel, 1880) - (PRISTILOMATIDAE)
- permodesta, Pentagoniturricula permodesta (K. Martin, 1914 †) - (TURRIDAE) (FOSSIL)
- permodesta, Hyalinia permodesta E.C. Von Martens, 1892 - (ZONITIDAE)
- permodestus, Leptochiton permodestus P. Kaas, 1985 - (LEPTOCHITONIDAE)
- permodestus, Vitrea permodestus G. Servain, 1880 - syn of: Vitrea contracta (C.A. Westerlund, 1871) - (PRISTILOMATIDAE)
- Permodomatoceras, Genus Permodomatoceras Ruzhentsev & Shimanskiy, 1954 † (DOMATOCERATIDAE) (FOSSIL)
- permolestus, Viluceras permolestus H.A. Leanza, 1958 † - (OLCOSTEPHANIDAE) (FOSSIL)
- permollis, Cryptostrea permollis (G.B. II Sowerby, 1871) - (OSTREIDAE)
- PERMONAUTILIDAE Barskov & Shilovsky, 2014 † - Family (CEPHALOPODA-NAUTILOIDEA-NAUTILIDA) (FOSSIL)
- Permonautilus, Genus Permonautilus Kruglov, 1933 † (PERMONAUTILIDAE) (FOSSIL)
- Permoperna, Genus Permoperna Nakazawa & Newell, 1968 † (BAKEVELLIIDAE) (FOSSIL)
- PERMOPHORIDAE - syn of Family: KALENTERIDAE (FOSSIL)
- PERMOPHORINAE - syn of Family: KALENTERIDAE (FOSSIL)
- Permophorus, Genus Permophorus Chavan, 1954 † (KALENTERIDAE) (FOSSIL)
- Permoteuthis, Genus Permoteuthis Rosenkrantz, 1946 † (PHRAGMOTEUTHIDIDAE) (FOSSIL)
- permuleata, Anthraconaia permuleata Weir † - (NAIADITIDAE) (FOSSIL)
- permulticostata, Volutilithes permulticostata Telegdi-Roth, 1914 † - (VOLUTIDAE) (FOSSIL)
- permulticostatum, Substeueroceras permulticostatum (Steuer, 1897 †) - (NEOCOMITIDAE) (FOSSIL)
- permunda, Natica permunda T.A. Conrad, 1854 † - (NATICIDAE) (FOSSIL)
- permundus, Turbo permundus T. Iredale, 1929 - syn of: Marmarostoma argyrostomus (C. Linnaeus, 1758) - (TURBINIDAE)
- permutabile, Tenuicerithium permutabile (W.H. Dall, 1892 †) - (CERITHIIDAE) (FOSSIL)
- permutabilis, Petricolaria permutabilis A.E.M. Cossmann & M.A. Peyrot, 1911 † - (VENERIDAE) (FOSSIL)
- permutata, Vexillum permutata P. Dautzenberg & J.L. Bouge, 1923 - syn of: Vexillum taeniatum (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- permutata, Pteronitella permutata Reed, 1927 † - (PTERINEIDAE) (FOSSIL)
- permutata, Opacuincola permutata M. Haase, 2008 - (TATEIDAE)
- permutatus, Antiguraleus permutatus (C. Hedley, 1922) - (MANGELIIDAE)
- permutatus, Guraleus permutatus C. Hedley, 1922 - syn of: Antiguraleus permutatus (C. Hedley, 1922) - (MANGELIIDAE)
- permutus, Eurites permutus D. Korn & al., 2010 † - (MUENSTEROCERATIDAE) (FOSSIL)
- perna, Mya perna C. Linnaeus, 1758 - syn of: Perna perna (C. Linnaeus, 1758) - (MYIDAE)
- Perna, Genus Perna L. Philipsson, 1788 (MYTILIDAE)
- perna, Perna perna (C. Linnaeus, 1758) - (MYTILIDAE)
- perna, Ostrea perna C. Linnaeus, 1767 - syn of: Isognomon perna (C. Linnaeus, 1767) - (OSTREIDAE)
- perna, Isognomon perna (C. Linnaeus, 1767) - (PTERIIDAE)
- perna, Tonganaella perna (L. Spengler, 1798) - (TELLINIDAE)
- perna costellata, Isognomon perna costellata T.A. Conrad, 1843 - (PTERIIDAE)
- perna picta, Perna perna picta (I. von Born, 1780) - (MYTILIDAE)
- pernaeformis, Illyricocongeria pernaeformis (N.I. Andrusov, 1897 †) - (DREISSENIDAE) (FOSSIL)
- pernaeformis, Isognomon pernaeformis L. Philipsson, 1788 - syn of: Isognomon perna (C. Linnaeus, 1767) - (PTERIIDAE)
- Pernagera, Genus Pernagera T. Iredale, 1939 (CHAROPIDAE)
- pernai, Puncticeras pernai (Bogoslovsky, 1962 †) - (CHEILOCERATIDAE) (FOSSIL)
- pernai, Pricella pernai (Wedekind, 1917 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- pernai, Pseudoprobeloceras pernai (Wedekind, 1918 †) - (PONTICERATIDAE) (FOSSIL)
- pernai applanatum, Gephyroceras pernai applanatum Wedekind, 1918 † - syn of: Pseudoprobeloceras applanatum (Wedekind, 1918 †) - (GEPHUROCERATIDAE) (FOSSIL)
- pernambucensis, Pomacea pernambucensis L.A. Reeve, 1856 - (AMPULLARIIDAE)
- pernambucensis, Bifrontia pernambucensis R.B. Watson, 1886 - syn of: Lyocyclus pernambucensis (R.B. Watson, 1886) - (ARCHITECTONICIDAE)
- pernambucensis, Caelatura pernambucensis (R.B. Watson, 1886) - (BARLEEIIDAE)
- pernambucensis, Gryphaeostrea pernambucensis C.J. Maury, 1936 † - (GRYPHAEIDAE) (FOSSIL)
- pernambucensis, Cimomia pernambucensis C.J. Maury, 1930 † - (HERCOGLOSSIDAE) (FOSSIL)
- pernambucensis, Lyocyclus pernambucensis (R.B. Watson, 1886) - (LYOCYCLIDAE)
- pernambucensis, Nautilus pernambucensis C.J. Maury, 1930 † - syn of: Eutrephoceras columbinum (Fritsch, 1872 †) - (NAUTILIDAE) (FOSSIL)
- pernambucensis, Ennucula pernambucensis (E.A. Smith, 1885) - (NUCULIDAE)
- pernambucensis, Nucula pernambucensis E.A. Smith, 1885 - syn of: Ennucula pernambucensis (E.A. Smith, 1885) - (NUCULIDAE)
- pernambucensis, Nuculoidea pernambucensis E.A. Smith, 1885 - syn of: Ennucula pernambucensis (E.A. Smith, 1885) - (NUCULIDAE)
- pernambucensis, Pachychilus pernambucensis L.A. Reeve, 1861 - (PACHYCHILIDAE)
- pernambucensis, Rissoa pernambucensis R.B. Watson, 1885 - (RISSOIDAE)
- pernambucoensis, Cerithiella pernambucoensis S.F.B. de Lima & J.C.N. Barros, 2007 - (NEWTONIELLIDAE)
- pernana, Erato pernana F. Sacco, 1894 † - (TRIVIIDAE) (FOSSIL)
- Pernaria, syn of: Genus Isognomon J. Lightfoot, 1786 (PTERIIDAE)
- Pernastela, Genus Pernastela T. Iredale, 1944 (CHAROPIDAE)
- Perneratia, Genus Perneratia Mawson & al., 2002 † (LOXONEMATIDAE) (FOSSIL)
- perneri, Paupospira perneri Longst, 1924 † - syn of: Paupospira trilineata (Foerste, 1923 †) - (LOPHOSPIRIDAE) (FOSSIL)
- perneri, Loxonema perneri Longstaff, 1909 † - (LOXONEMATIDAE) (FOSSIL)
- perneri, Calloconus perneri Ríha, 1938 † - (METOPTOMATIDAE) (FOSSIL)
- perneri, Devonozyga perneri Horný, 1955 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- perneri, Platyceras perneri Tolmachoff, 1930 † - (PLATYCERATIDAE) (FOSSIL)
- perneri, Selesinuites perneri Horný, 1997 † - (SINUITIDAE) (FOSSIL)
- perneri dudleyense, Loxonema perneri dudleyense Longstaff, 1909 † - (LOXONEMATIDAE) (FOSSIL)
- Pernericirrus, Genus Pernericirrus Frýda, 1997 † (PORCELLIIDAE) (FOSSIL)
- Perneritrochus, Genus Perneritrochus Cossmann, 1909 † (PLANITROCHIDAE) (FOSSIL)
- pernettae, Megastomia pernettae (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- Pernigenus, syn of: Genus Isognomon J. Lightfoot, 1786 (PTERIIDAE)
- Pernites, syn of: Genus Perna L. Philipsson, 1788 (MYTILIDAE)
- pernitidum, Microstagon pernitidum A.E.M. Cossmann, 1906 † - (UNGULINIDAE) (FOSSIL)
- pernitidus, Nassarius pernitidus (W.H. Dall, 1889) - (NASSARIIDAE)
- pernobilis, Koratia distincta pernobilis (A.E.J. Férussac, 1821) - (ARIOPHANTIDAE)
- pernobilis, Sthenorytis pernobilis (P. Fischer & A.C. Bernardi, 1857) - (EPITONIIDAE)
- pernobilis, Daphnella pernobilis T. Habe, 1962 - (RAPHITOMIDAE)
- pernobilis belaurita, Sthenorytis pernobilis belaurita (W.H. Dall, 1889) - (EPITONIIDAE)
- Pernoceras, Genus Pernoceras Schindewolf , 1922 † (KIRSOCERATIDAE) (FOSSIL)
- Pernodoceras, Genus Pernodoceras Zhao & Liang, 1974 † (PSEUDOTIROLITIDAE) (FOSSIL)
- pernodosum, Parengonoceras pernodosum (Sommermeier, 1910 †) - (KNEMICERATIDAE) (FOSSIL)
- pernodosus, Conus pernodosus H.A. Pilsbry & Johnson, 1922 † - (CONIDAE) (FOSSIL)
- pernodosus, Euomphalus pernodosus F.B. Meek & A.H. Worthen, 1870 † - (EUOMPHALIDAE) (FOSSIL)
- pernodosus, Hefengnautilus pernodosus F.S. Xu, 1977 † - (TAINOCERATIDAE) (FOSSIL)
- pernodulosa, Taurasia coronata pernodulosa F. Sacco, 1904 - (MURICIDAE)
- pernoides, Mytilarca pernoides J.J.F. Whiteaves, 1905 † - syn of: Mytilarca aphaea (J.W. Hall, 1865 †) - (AMBONYCHIIDAE) (FOSSIL)
- pernoides, Placunanomia pernoides J.E. Gray, 1853 - syn of: Pododesmus foliatus (W.J. Broderip, 1834) - (ANOMIIDAE)
- pernoides, Pododesmus pernoides P.P. Carpenter, 1857 - syn of: Pododesmus foliatus (W.J. Broderip, 1834) - (ANOMIIDAE)
- pernoides, Pododesmus pernoides J.E. Gray, 1853 - syn of: Pododesmus foliatus (W.J. Broderip, 1834) - (ANOMIIDAE)
- pernoides, Acar pernoides A.M. Strong, 1932 - syn of: Acar bailyi P. Bartsch, 1931 - (ARCIDAE)
- pernoides, Parainoceramya pernoides (G.A. Goldfuss, 1835 †) - (INOCERAMIDAE) (FOSSIL)
- pernomus, Cyclopecten pernomus (L.G. Hertlein, 1935) - (PROPEAMUSSIIDAE)
- Pernomytilus, Genus Pernomytilus Rollier, 1914 † (MYTILIDA (unassigned)) (FOSSIL)
- pernoni, Ficheuria pernoni Dubourdieu, 1953 † - (FLICKIIDAE) (FOSSIL)
- Pernopecten, Genus Pernopecten Winchell, 1865 † (PERNOPECTINIDAE) (FOSSIL)
- PERNOPECTINIDAE Newell, 1938 † - Family (BIVALVIA-PTERIOMORPHIA-PECTINIDA) (FOSSIL)
- Pernostrea, Genus Pernostrea Munier-Chalmas, 1864 † (GRYPHAEIDAE) (FOSSIL)
- Pernotrochus, Genus Pernotrochus Chronic , 1952 † (GOSSELETINIDAE) (FOSSIL)
- pernula, Arca pernula O.F. Müller, 1776 - syn of: Nuculana pernula (O.F. Müller, 1779) - (ARCIDAE)
- pernula, Melanella pernula T.A. de M. Monterosato, 1890 - syn of: Melanella polita (C. Linnaeus, 1758) - (EULIMIDAE)
- pernula, Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula, Pinna pernula P.F. Röding, 1798 - syn of: Pinna carnea J.F. Gmelin, 1791 - (PINNIDAE)
- pernula, Plicatula pernula J.C. Melvill, 1898 - (PLICATULIDAE)
- pernula arctica, Leda pernula arctica Messjatsev, 1931 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula arcuata, Nuculana pernula arcuata O.A.L. Mörch, 1869 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula borealis, Leda pernula borealis Messjatsev, 1931 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula costigera, Leda pernula costigera W. Leche, 1883 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula elongata, Leda pernula elongata K.M. Derjugin, 1928 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula falcula, Leda pernula falcula J.G. Jeffreys, 1877 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula kawamurai, Nuculana pernula kawamurai T. Habe, 1961 - (NUCULANIDAE)
- pernula lamellosa, Leda pernula lamellosa W. Leche, 1883 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula marisalbae, Leda pernula marisalbae Messjatsev, 1931 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernula pernuloides, Nuculana pernula pernuloides R.W. Dunker, 1882 - (NUCULANIDAE)
- pernula radiata, Nuculana pernula radiata A. Krause, 1885 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- pernuloides, Nuculana pernula pernuloides R.W. Dunker, 1882 - (NUCULANIDAE)
- pernux, Spondylus pernux T. Iredale, 1939 - syn of: Spondylus foliaceus K. Schreibers, 1793 - (SPONDYLIDAE)
- perobesus, Bothriembryon perobesus T. Iredale, 1939 - (BOTHRIEMBRYONTIDAE)
- perobliqua, Epicodakia perobliqua (R. Tate, 1892) - (LUCINIDAE)
- perobliqua, Moulinsia perobliqua J.F. Quadras & O.F. von Möllendorff, 1894 - (PUPINIDAE)
- perobliquum, Cardium perobliquum Martin, 1882 † - (CARDIIDAE) (FOSSIL)
- perobliquum, Annoceras perobliquum Foerste, 1964 † - syn of: Annoceras costatum Flower, 1964 † - (ELLESMEROCERATIDAE) (FOSSIL)
- perobliquum, Stokesoceras perobliquum Foerste, 1925 † - (LOWOCERATIDAE) (FOSSIL)
- perobliquum, Gennaeosinum perobliquum (P. Dautzenberg & H. Fischer, 1906) - (NATICIDAE)
- perobscura, Stereophaedusa japonica perobscura H.A. Pilsbry, 1901 - (CLAUSILIIDAE)
- perobtusus, Aeneator perobtusus (C.A. Fleming, 1943 †) - (BUCCINIDAE) (FOSSIL)
- Perochlora, syn of: Genus Damochlora T. Iredale, 1938 (CAMAENIDAE)
- perola, Chromodoris perola Ev. Marcus, 1976 - (CHROMODORIDIDAE)
- Peronaea, Subgenus Angulus (Peronaea) Poli, 1791 † (TELLINIDAE) (FOSSIL)
- Peronaea, syn of: Genus Tellina C. Linnaeus, 1758 (TELLINIDAE)
- Peronaeoderma, syn of: Subgenus Tellina (Eurytellina) P. Fischer, 1887 (TELLINIDAE)
- Peronaeus, Subgenus Bostryx (Peronaeus) J.A. Albers, 1850 (BULIMULIDAE)
- peronata, Melanopsis douttei peronata P.M. Pallary, 1920 - (MELANOPSIDAE)
- peronatus, Systellomphalus peronatus H.A. Pilsbry & A.A. Olsson, 1941 † - (TORNIDAE) (FOSSIL)
- Peronella, syn of: Genus Onchidella J.E. Gray, 1850 (ONCHIDIIDAE)
- peronellicola, Hypermastus peronellicola (J.T. Kuroda & T. Habe, 1950) - (EULIMIDAE)
- peroneopsis, Dorymenia peroneopsis H. Heath, 1918 - (PRONEOMENIIDAE)
- peroni, Pseudovertagus peroni B.R. Wilson, 1975 - (CERITHIIDAE)
- peroni, Cryptoplax peroni A. de Rochebrune, 1882 - syn of: Cryptoplax larvaeformis (E.J. Burrow, 1815) - (CRYPTOPLACIDAE)
- peroni, Neolobites peroni A. Hyatt, 1903 † - (ENGONOCERATIDAE) (FOSSIL)
- peroni, Laternula peroni É. Lamy, 1934 - syn of: Laternula rostrata (G.B. II Sowerby, 1839) - (LATERNULIDAE)
- peroni, Anatina peroni É. Lamy, 1934 - syn of: Laternula rostrata (G.B. II Sowerby, 1839) - (MACTRIDAE)
- peroni, Chlamys peroni R. Tate, 1886 † - (PECTINIDAE) (FOSSIL)
- peroni, Turbonilla peroni C. Vélain, 1878 - (PYRAMIDELLIDAE)
- peroni, Spirula peroni J.B.P.A. Lamarck, 1822 - syn of: Spirula spirula (C. Linnaeus, 1758) - (SPIRULIDAE)
- peroni, Heterotissotia peroni Lissón, 1908 † - (TISSOTIIDAE) (FOSSIL)
- peroni, Fagesia peroni Pervinquiére, 1907 † - (VASCOCERATIDAE) (FOSSIL)
- Peronia, Genus Peronia J. Fleming, 1822 (ONCHIDIIDAE)
- peroniana, Mitrella peroniana (C. Hedley, 1913) - (COLUMBELLIDAE)
- peroniana, Cylichna peroniana T. Iredale, 1936 - syn of: Adamnestia arachis (J.R.C. Quoy & J.P. Gaimard, 1833) - (CYLICHNIDAE)
- peroniana, Bathyxylophila peroniana B.A. Marshall, 1988 - (LAROCHEIDAE)
- peroniana, Cymatiella peroniana T. Iredale, 1929 - syn of: Cymatiella verrucosa (L.A. Reeve, 1844) - (RANELLIDAE)
- peroniana, Thraciopsis peroniana T. Iredale, 1924 - (THRACIIDAE)
- peroniana, Prothyasira peroniana T. Iredale, 1930 - (THYASIRIDAE)
- peroniana, Lyria peroniana T. Iredale, 1940 - syn of: Lyria pattersonia (G. Perry, 1811) - (VOLUTIDAE)
- peroniana, Xenophora peroniana (T. Iredale, 1929) - (XENOPHORIDAE)
- peroniana kondoi, Xenophora peroniana kondoi W.F. Ponder, 1983 - (XENOPHORIDAE)
- peroniana peregrina, Thyasira peroniana peregrina T. Iredale, 1930 - syn of: Thyasira peregrina T. Iredale, 1930 - (THYASIRIDAE)
- peronianus, Conus peronianus T. Iredale, 1931 - syn of: Floraconus anemone (J.B.P.A. Lamarck, 1810) - (CONIDAE)
- peronianus, Guraleus tasmanicus peronianus C.F. Laseron, 1954 - (MANGELIIDAE)
- peronianus, Modiolus peronianus C.F. Laseron, 1956 - (MYTILIDAE)
- Peroniceras, Genus Peroniceras de Grossouvre, 1894 † (COLLIGNONICERATIDAE) (FOSSIL)
- Peronidia, Subgenus Angulus (Peronidia) Dall, 1900 † (TELLINIDAE) (FOSSIL)
- Peronidia, syn of: Genus Tellina C. Linnaeus, 1758 (TELLINIDAE)
- Peroniella, syn of: Genus Onchidella J.E. Gray, 1850 (ONCHIDIIDAE)
- peronii, Atlanta peronii C.A. Lesueur, 1817 - (ATLANTIDAE)
- peronii, Cavolinia peronii C.A. Lesueur, 1813 - syn of: Cavolinia tridentata (P. Forsskål in C. Niebuhr, 1775) - (CAVOLINIIDAE)
- peronii, Cymbulia peronii H.M.D. de Blainville, 1818 - (CYMBULIIDAE)
- peronii, Glaucus peronii R.P. Lesson, 1826 - syn of: Glaucus atlanticus F. Forster, 1777 - (GLAUCIDAE)
- peronii, Loligopsis peronii J.B.P.A. Lamarck, 1822 - (IDIOSEPIIDAE)
- peronii, Liotinaria peronii (Kiener, 1838) - (LIOTIIDAE)
- peronii, Liotina peronii (R.W. Dunker, 1869) - (LIOTIIDAE)
- peronii, Nebularia peronii J.B.P.A. Lamarck, 1811 - syn of: Nebularia aurantia (J.F. Gmelin, 1791) - (MITRIDAE)
- peronii, Magilus peronii J.B.P.A. Lamarck, 1818 - syn of: Magilus antiquus P.D. Montfort, 1810 - (MURICIDAE)
- peronii, Octopus peronii C.A. Lesueur, 1821 - (OCTOPODIDAE)
- peronii, Peronia peronii (G.L.C.F.D. Cuvier, 1804) - (ONCHIDIIDAE)
- peronii, Onchidium peronii G.L.C.F.D. Cuvier, 1804 - syn of: Peronia peronii (G.L.C.F.D. Cuvier, 1804) - (ONCHIDIIDAE)
- peronii, Scutellastra peronii (H.M.D. de Blainville, 1825) - (PATELLIDAE)
- peronii, Pleurobranchus peronii G.L.C.F.D. Cuvier, 1804 - (PLEUROBRANCHIDAE)
- peronii, Pneumoderma violaceum peronii (G.L.C.F.D. Cuvier, 1817) - (PNEUMODERMATIDAE)
- peronii, Katelysia peronii (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- peronii, Thylacodes peronii (C. Rousseau in J.C. Chenu, 1844) - (VERMETIDAE)
- peronii, Vermetus peronii A. Valenciennes, 1846 - syn of: Eualetes centiquadrus (A. Valenciennes, 1846) - (VERMETIDAE)
- peronii minor, Cymbulia peronii minor S. Van Der Spoel, 1976 - syn of: Cymbulia peronii H.M.D. de Blainville, 1818 - (CYMBULIIDAE)
- peronii squamifera, Scutellastra peronii squamifera (L.A. Reeve, 1845) - (PATELLIDAE)
- Peronina, Genus Peronina H.P. Plate, 1893 (ONCHIDIIDAE)
- Peronoceras, Genus Peronoceras Simpson, 1843 † (DACTYLIOCERATIDAE) (FOSSIL)
- Peronodoris, syn of: Genus Atagema J.E. Gray, 1850 (DISCODORIDIDAE)
- peropima, Bistolida peropima T. Iredale, 1939 - syn of: Bistolida hirundo rouxi (C.M.F. Ancey, 1882) - (CYPRAEIDAE)
- perornata, Sitala frenesti perornata E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1993 - (ARIOPHANTIDAE)
- perornata, Pareuryalox perornata F. Haas, 1953 † - (GOSSELETINIDAE) (FOSSIL)
- perornata, Xymenella perornata J. Marwick, 1931 † - (MURICIDAE) (FOSSIL)
- perornata, Pleurotomaria perornata Shumard, 1859 † - (PLEUROTOMARIIDAE) (FOSSIL)
- perornatum, Fragum perornatum T. Iredale, 1929 - syn of: Ctenocardia virgo (L.A. Reeve, 1845) - (CARDIIDAE)
- perornatum, Discoceras perornatum Flower, 1968 † - syn of: Plectolites incipiens (Barrande, 1870 †) - (DISCOCERATIDAE) (FOSSIL)
- perornatum, Huananoceras perornatum J.K. Zhao & Liang, 1974 † - syn of: Huananoceras pseudoopalinum (Frech, 1895 †) - (HUANANOCERATIDAE) (FOSSIL)
- perornatus, Glyptaesopus perornatus H.A. Pilsbry & A.A. Olsson, 1941 † - (BORSONIIDAE) (FOSSIL)
- perornatus, Zelippistes perornatus W.B. Marshall & R. Murdoch, 1923 - syn of: Zelippistes benhami (H.H. Suter, 1902) - (CAPULIDAE)
- perornatus, Cenoceras perornatus (Crick, 1894 †) - (CENOCERATIDAE) (FOSSIL)
- perornatus, Ischnochiton perornatus P.P. Carpenter in H.A. Pilsbry, 1892 - (ISCHNOCHITONIDAE)
- perornatus, Nautilus perornatus Crick, 1894 † - syn of: Cenoceras perornatus (Crick, 1894 †) - (NAUTILIDAE) (FOSSIL)
- perornatus, Amphitrochus perornatus Étallon, 1918 † - (NODODELPHINULIDAE) (FOSSIL)
- perornatus, Pyropsis perornatus B. Wade, 1926 † - (PERISSITYIDAE) (FOSSIL)
- perornatus, Syrnola perornatus B. Wade 1926 - (PYRAMIDELLIDAE)
- perosinii, Limax perosinii M. Lessona & C. Pollonera, 1882 - (LIMACIDAE)
- peroteti, Helix peroteti S.A.A. Petit De La Saussaye, 1841 - syn of: Perrottetia peroteti (S.A.A. Petit De La Saussaye, 1841) - (HELICIDAE)
- peroteti, Perrottetia peroteti (S.A.A. Petit De La Saussaye, 1841) - (STREPTAXIDAE)
- Perothis, syn of: Genus Leachia C.A. Lesueur, 1821 (CRANCHIIDAE)
- Perotrochus, Genus Perotrochus P. Fischer, 1885 (PLEUROTOMARIIDAE)
- perottetiana, Vitta perottetiana (C.A. Récluz, 1841) - (NERITIDAE)
- Perotyphis, syn of: Genus Pterotyphis F.P. Jousseaume, 1881 (MURICIDAE)
- perovalis, Archinacella perovalis (R.P. Whitfield, 1878 †) - (ARCHINACELLIDAE) (FOSSIL)
- perovalis, Cavolinia perovalis A. von Koenen, 1882 † - syn of: Diacrolinia aquensis (J.P.S. Grateloup, 1827 †) - (CAVOLINIIDAE) (FOSSIL)
- perovalis, Marginella perovalis A. von Koenen † - (MARGINELLIDAE) (FOSSIL)
- perovalis, Hamiota perovalis (T.A. Conrad, 1834) - (UNIONIDAE)
- perovalis, Tapes perovalis Wood, 1840 † - (VENERIDAE) (FOSSIL)
- perovata, Streblopteria perovata de Koninck, 1885 † - (DELTOPECTINIDAE) (FOSSIL)
- perovata, Pythia perovata A. Garrett, 1872 - (ELLOBIIDAE)
- perovata, Phasianella perovata Shumard, 1853 † - syn of: Tylostoma tumidum (Shumard, 1853 †) - (PHASIANELLIDAE) (FOSSIL)
- perovata, Callista perovata T.A. Conrad, 1833 † - (VENERIDAE) (FOSSIL)
- perovato, Sinum perovato T.A. Conrad, 1866 † - (NATICIDAE) (FOSSIL)
- perovatum, Crommium perovatum (T.A. Conrad, 1846 †) - (AMPULLINIDAE) (FOSSIL)
- perovatum, Pleurobema perovatum T.A. Conrad, 1834 - (UNIONIDAE)
- perovatus, Phacoides perovatus W.H. Dall, 1916 † - (LUCINIDAE) (FOSSIL)
- perovula, Hyalina perovula M. Yokoyama, 1922 - (MARGINELLIDAE)
- perpallida, Calocochlia perpallida P. Bartsch, 1932 - (BRADYBAENIDAE)
- perpallidus, Phanerophthalmus perpallidus J.J. Risbec, 1928 - (HAMINOEIDAE)
- perpallidus, Incerticyclus perpallidus (C.B. Adams, 1851) - (NEOCYCLOTIDAE)
- Perparthenina, syn of: Genus Chrysallida P.P. Carpenter, 1857 (PYRAMIDELLIDAE)
- perparva, Chelidonura perparva (J.J. Risbec, 1928) - (AGLAJIDAE)
- perparva, Pleuropoma laciniosa perparva M.C. Neal, 1934 - (HELICINIDAE)
- perparva, Ocinebrina perparva B.M. Landau & al., 2013 † - (MURICIDAE) (FOSSIL)
- perparva, Philbertia perparva (R.B. Watson, 1881) - (RAPHITOMIDAE)
- perparva, Pleurotoma perparva R.B. Watson, 1881 - syn of: Philbertia perparva (R.B. Watson, 1881) - (TURRIDAE)
- perparvula, Ascalista perparvula J.M.R.M. Viader, 1951 - syn of: Mokumea parvula (J.M.R.M. Viader, 1951) - (COLUMBELLIDAE)
- perparvula, Pyrene perparvula J.M.R.M. Viader, 1951 - syn of: Mokumea parvula (J.M.R.M. Viader, 1951) - (COLUMBELLIDAE)
- perparvula, Obtortio perparvula R.B. Watson, 1886 - syn of: Cerithidium perparvulum (R.B. Watson, 1886) - (DIASTOMATIDAE)
- perparvula, Divalinga perparvula (W.H. Dall, 1901) - (LUCINIDAE)
- perparvulum, Cerithidium perparvulum (R.B. Watson, 1886) - (CERITHIIDAE)
- perparvus, Cyclostremiscus perparvus (C.B. Adams, 1852) - (TORNIDAE)
- perpasta, Lampsilis perpasta I. Lea, 1861 - syn of: Lampsilis straminea T.A. Conrad, 1834 - (UNIONIDAE)
- perpauxilla, Clathurella perpauxilla R.B. Watson, 1881 - syn of: Pleurotomella elusiva (W.H. Dall, 1881) - (CLATHURELLIDAE)
- perpauxilla, Mangelia perpauxilla R.B. Watson, 1881 - syn of: Pleurotomella elusiva (W.H. Dall, 1881) - (MANGELIIDAE)
- perpauxilla, Pleurotomella perpauxilla (R.B. Watson, 1881) - (RAPHITOMIDAE)
- perpauxilla, Pleurotoma perpauxilla R.B. Watson, 1881 - syn of: Pleurotomella elusiva (W.H. Dall, 1881) - (TURRIDAE)
- perpava, Nozeba perpava C.R. Laws, 1939 † - (IRAVADIIDAE) (FOSSIL)
- perpectinata, Arca perpectinata A. De Gregorio, 1930 † - (ARCIDAE) (FOSSIL)
- perpicta, Columbella perpicta W.H. Dall, 1901 - syn of: Cosmioconcha nitens (C.B. Adams, 1850) - (COLUMBELLIDAE)
- perpicta, Cosmioconcha perpicta W.H. Dall, 1901 - syn of: Cosmioconcha nitens (C.B. Adams, 1850) - (COLUMBELLIDAE)
- perpinguis, Nassarius perpinguis (R.B. Hinds, 1844) - (NASSARIIDAE)
- perpinguis, Nassa perpinguis R.B. Hinds, 1844 - syn of: Nassarius perpinguis (R.B. Hinds, 1844) - (NASSARIIDAE)
- perpinguis bifasciata, Nassa perpinguis bifasciata S.S. Berry, 1908 - syn of: Nassarius perpinguis (R.B. Hinds, 1844) - (NASSARIIDAE)
- perpinianus, Conus perpinianus Fontannes, 1880 † - (CONIDAE) (FOSSIL)
- perplana, Astarte perplana T.A. Conrad, 1840 † - (ASTARTIDAE) (FOSSIL)
- perplana, Pteromeris perplana (T.A. Conrad, 1841) - (CARDITIDAE)
- perplana, Cardita perplana T.A. Conrad, 1841 † - syn of: Pteromeris perplana (T.A. Conrad, 1841) - (CARDITIDAE) (FOSSIL)
- perplana, Pleuromeris perplana T.A. Conrad, 1841 † - syn of: Pteromeris perplana (T.A. Conrad, 1841) - (CARDITIDAE) (FOSSIL)
- perplana, Venericardia perplana T.A. Conrad, 1841 † - syn of: Pteromeris perplana (T.A. Conrad, 1841) - (CARDITIDAE) (FOSSIL)
- perplana, Isabellaria perplana (O. Böttger, 1885) - (CLAUSILIIDAE)
- perplana, Scambula perplana T.A. Conrad, 1869 † - (CRASSATELLIDAE) (FOSSIL)
- perplana, Lecanospira perplana J. Heller, 1954 † - (OPHILETIDAE) (FOSSIL)
- perplana, Macoma perplana (H.F.A. von Ihering, 1897 †) - (TELLINIDAE) (FOSSIL)
- perplana josephinae, Isabellaria perplana josephinae (O. Böttger, 1880) - (CLAUSILIIDAE)
- perplana triodos, Isabellaria perplana triodos (O. Böttger, 1877) - (CLAUSILIIDAE)
- perplanata, Trochoidea spratti perplanata H.A. Pilsbry, 1893 - (HYGROMIIDAE)
- perplanum, Hammatoceras perplanum Prinz, 1904 † - (HAMMATOCERATIDAE) (FOSSIL)
- perplanus, Arcestes perplanus F.B. Meek, 1877 † - syn of: Gymnites perplanus (F.B. Meek, 1877 †) - (ARCESTIDAE) (FOSSIL)
- perplanus, Gymnites perplanus (F.B. Meek, 1877 †) - (GYMNITIDAE) (FOSSIL)
- perplanus, Pecten perplanus Morton, 1833 † - (PECTINIDAE) (FOSSIL)
- perplexa, Tubuaia perplexa (A. Garrett, 1879) - (ACHATINELLIDAE)
- perplexa, Achatinella turgida perplexa H.A. Pilsbry - (ACHATINELLIDAE)
- perplexa, Anomia perplexa W.H. Turton, 1932 - syn of: Anomia achaeus Gray, 1849 - (ANOMIIDAE)
- perplexa, Aegista perplexa H.A. Pilsbry & Y. Hirase, 1905 - (BRADYBAENIDAE)
- perplexa, Polydontes perplexa A.E.J. Férussac, 1821 - (CAMAENIDAE)
- perplexa, Perplicaria perplexa W.H. Dall, 1890 † - (CANCELLARIIDAE) (FOSSIL)
- perplexa, Strophiops perplexa (C.J. Maynard, 1889) - (CERIONIDAE)
- perplexa, Phenacohelix perplexa (R. Murdoch, 1897) - (CHAROPIDAE)
- perplexa, Therasia perplexa R. Murdoch, 1897 - syn of: Phenacohelix perplexa (R. Murdoch, 1897) - (CHAROPIDAE)
- perplexa, Thorunna perplexa (R.F. Burn, 1957) - (CHROMODORIDIDAE)
- perplexa, Glossodoris perplexa R.F. Burn, 1957 - syn of: Thorunna perplexa (R.F. Burn, 1957) - (CHROMODORIDIDAE)
- perplexa, Lienardia perplexa (G. Nevill & H. Nevill, 1875) - (CLATHURELLIDAE)
- perplexa, Clausilia perplexa E.R. Sykes, 1893 - syn of: Gonionenia dohrni (L. Pfeiffer, 1861) - (CLAUSILIIDAE)
- perplexa, Columbella perplexa M.M. Schepman, 1911 - syn of: Mitromorpha fischeri (R.P.J. Hervier, 1900) - (COLUMBELLIDAE)
- perplexa, Eugaimardia perplexa (B.C. Cotton, 1931) - (CYAMIIDAE)
- perplexa, Cyclochlamys perplexa (T. Soot-Ryen, 1960) - (CYCLOCHLAMYDIDAE)
- perplexa, Corbicula perplexa T. Prime, 1865 - syn of: Corbicula limosa (W.G. Maton, 1809) - (CYRENIDAE)
- perplexa, Toledonia perplexa W.H. Dall, 1902 - (DIAPHANIDAE)
- perplexa, Discodoris perplexa (L.S.R. Bergh, 1907) - (DISCODORIDIDAE)
- perplexa, Doris perplexa L.S.R. Bergh, 1907 - syn of: Discodoris perplexa (L.S.R. Bergh, 1907) - (DORIDIDAE)
- perplexa, Doto perplexa L.S.R. Bergh, 1905 - (DOTIDAE)
- perplexa, Gyroscala perplexa W.H. Pease, 1863 - syn of: Gyroscala lamellosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- perplexa, Melanella perplexa W.R.B. Oliver, 1915 - (EULIMIDAE)
- perplexa, Scintilla perplexa (H.B. Preston, 1908) - (GALEOMMATIDAE)
- perplexa, Helix perplexa A.E.J. Férussac, 1832 - (HELICIDAE)
- perplexa, Littorina perplexa W.H. Turton, 1932 - syn of: Afrolittorina africana (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- perplexa, Euanodontia perplexa (B.C. Cotton & F.C. Godfrey, 1938) - (LUCINIDAE)
- perplexa, Euanodontia perplexa B.C. Cotton & F.C. Godfrey, 1938 - syn of: Euanodontia perplexa (B.C. Cotton & F.C. Godfrey, 1938) - (LUCINIDAE)
- perplexa, Cavatidens perplexa B.C. Cotton & F.C. Godfrey, 1938 - syn of: Euanodontia perplexa (B.C. Cotton & F.C. Godfrey, 1938) - (LUCINIDAE)
- perplexa, Fossaria perplexa (F.C. Baker & J. Henderson, 1929) - (LYMNAEIDAE)
- perplexa, Galba perplexa F.C. Baker & J. Henderson, 1929 - syn of: Fossaria perplexa (F.C. Baker & J. Henderson, 1929) - (LYMNAEIDAE)
- perplexa, Lyonsiella perplexa J.A. Allen & H. Turner, 1974 - (LYONSIELLIDAE)
- perplexa, Mangelia multilineolata perplexa M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1885 - (MANGELIIDAE)
- perplexa, Hemithecella perplexa Stinchcomb & Darrough, 1995 † - syn of: Hemithecella eminensis Stinchcomb & Darrough, 1995 † - (MATTHEVIIDAE) (FOSSIL)
- perplexa, Mitrolumna perplexa M.M. Schepman, 1909 - (MITROMORPHIDAE)
- perplexa, Attiliosa perplexa E.H. Vokes, 1999 - (MURICIDAE)
- perplexa, Dermomurex perplexa A.M. Keen, 1958 - syn of: Dermomurex indentatus (P.P. Carpenter, 1857) - (MURICIDAE)
- perplexa, Specula perplexa Cecalupo & Perugia, 2017 - (NEWTONIELLIDAE)
- perplexa, Olivella perplexa A.A. Olsson, 1956 - (OLIVELLIDAE)
- perplexa, Tardewocklumeria perplexa (Bogoslovsky, 1981 †) - (PARAWOCKLUMERIIDAE) (FOSSIL)
- perplexa, Patella perplexa H.A. Pilsbry, 1891 - syn of: Scutellastra chapmani (J.E. Tenison-Woods, 1875) - (PATELLIDAE)
- perplexa, Pendroma perplexa W.H. Dall, 1927 - (PENDROMIDAE)
- perplexa, Obscuropsis perplexa Horný, 1992 † - (PLATYCERATIDAE) (FOSSIL)
- perplexa, Dentellaria perplexa (A.E.J. Férussac, 1821) - (PLEURODONTIDAE)
- perplexa, Annularops perplexa (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- perplexa, Chondropoma canescens perplexa C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- perplexa, Chondrothyretes shuttleworthi perplexa (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- perplexa, Asperdaphne perplexa (J.C. Verco, 1909) - (RAPHITOMIDAE)
- perplexa, Amblyacrum perplexa (G.P. Deshayes, 1865 †) - (RAPHITOMIDAE) (FOSSIL)
- perplexa, Onoba perplexa (Finlay, 1924 †) - (RISSOIDAE) (FOSSIL)
- perplexa, Rissoina perplexa Finlay, 1924 † - (RISSOINIDAE) (FOSSIL)
- perplexa, Anxietas perplexa T. Iredale, 1917 - (SEGUENZIIDAE)
- perplexa, Cirsonella perplexa C.F. Laseron, 1954 - syn of: Cirsonella reflecta C.F. Laseron, 1954 - (SKENEIDAE)
- perplexa, Tellina perplexa S.C.T. Hanley, 1844 - (TELLINIDAE)
- perplexa, Monodonta perplexa H.A. Pilsbry, 1889 - (TROCHIDAE)
- perplexa, Bostrichocentrum perplexa F.G. Thompson, 1964 - (UROCOPTIDAE)
- perplexa, Dosinia perplexa J. Marwick, 1927 † - (VENERIDAE) (FOSSIL)
- perplexa, Meretrix perplexa W.H. Dall, 1891 - syn of: Tivela dentaria (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- perplexa, Truncatellina perplexa (H.C. Burnup in J.C. Melvill & J.H. Ponsonby, 1908) - (VERTIGINIDAE)
- perplexa, Yoldiella perplexa J.A. Allen, A. Sanders & G. Hannah, 1995 - (YOLDIIDAE)
- perplexa boninensis, Monodonta perplexa boninensis A. Asakura & S. Nishimura, 1987 - (TROCHIDAE)
- perplexa woodringi, Perplicaria perplexa woodringi E.J. Petuch, 1994 † - (CANCELLARIIDAE) (FOSSIL)
- perplexabilis, Conella perplexabilis C.J. Maury, 1917 † - (COLUMBELLIDAE) (FOSSIL)
- perplexans, Vespoceras perplexans (Flower, 1952 †) - (MANDALOCERATIDAE) (FOSSIL)
- Perplexiconus, Genus Perplexiconus J.K. Tucker & M.J. Tenorio, 2009 (CONIDAE)
- perplexior, Pseudorhaphitoma perplexior R.N. Kilburn & H. Dekker, 2008 - (MANGELIIDAE)
- perplexissima, Brachystomia perplexissima (S. Nomura, 1937) - (PYRAMIDELLIDAE)
- perplexum, Cerithium perplexum W.B. Marshall & R. Murdoch, 1919 - syn of: Zeacumantus lutulentus (L.C. Kiener, 1842) - (CERITHIIDAE)
- perplexum, Ataxocerithium perplexum W.B. Marshall & R. Murdoch, 1919 - syn of: Zeacumantus lutulentus (L.C. Kiener, 1842) - (NEWTONIELLIDAE)
- perplexum, Orthonychia perplexum J.W. Hall, 1879 † - (ORTHONYCHIIDAE) (FOSSIL)
- perplexum, Chondropoma confertum perplexum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- perplexum, Chondropometes scopulorum perplexum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- perplexum, Centrolitoceras perplexum Flower, 1945 † - (RUTOCERATIDAE) (FOSSIL)
- perplexum, Sairostoma perplexum F. Haas, 1938 - (STREPTAXIDAE)
- perplexum, Isorropodon perplexum R. Sturany, 1896 - (VESICOMYIDAE)
- perplexum, Lavaloceras perplexum Flower, 1952 † - (WESTONOCERATIDAE) (FOSSIL)
- perplexus, Baculites perplexus Cobban, 1962 † - (BACULITIDAE) (FOSSIL)
- perplexus, Cantharus perplexus A.A. Olsson & A. Harbison, 1953 - syn of: Calotrophon ostrearum (T.A. Conrad, 1846) - (BUCCINIDAE)
- perplexus, Perplexiconus perplexus (G.B. II Sowerby, 1857) - (CONIDAE)
- perplexus, Fusinus perplexus (A. Adams, 1864) - (FASCIOLARIIDAE)
- perplexus, Fusus perplexus A. Adams, 1864 - syn of: Fusinus perplexus (A. Adams, 1864) - (FASCIOLARIIDAE)
- perplexus, Leptonotis perplexus (H.H. Suter, 1907) - (HIPPONICIDAE)
- perplexus, Diplodon perplexus C.T. Simpson, 1914 - syn of: Rhipidodonta charruana (A.V.M.D. D'Orbigny, 1835) - (HYRIIDAE)
- perplexus, Rugicyclotus perplexus (P. Bartsch, 1942) - (NEOCYCLOTIDAE)
- perplexus, Amphicyclotus perplexus C. de la Torre, P. Bartsch & J.P.E. Morrison, 1942 - (NEOCYCLOTIDAE)
- perplexus, Sigmataxis perplexus (C.B. Adams, 1850) - (OLEACINIDAE)
- perplexus, Cyclopecten perplexus T. Soot-Ryen, 1960 - syn of: Cyclochlamys perplexa (T. Soot-Ryen, 1960) - (PROPEAMUSSIIDAE)
- perplexus, Unio perplexus T. Say, 1829 - syn of: Epioblasma obliquata (C.S. Rafinesque, 1820) - (UNIONIDAE)
- perplexus, Unio perplexus I. Lea, 1831 - syn of: Epioblasma torulosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- perplexus ferrugineus, Fusinus perplexus ferrugineus J.T. Kuroda & T. Habe, 1960 - syn of: Fusinus ferrugineus (J.T. Kuroda & T. Habe, 1960) - (FASCIOLARIIDAE)
- perplexus minor, Fusus perplexus minor C.E. Lischke, 1869 - syn of: Fusinus ferrugineus (J.T. Kuroda & T. Habe, 1960) - (FASCIOLARIIDAE)
- perplexus nagasakii, Fusus perplexus nagasakii A.W. Grabau, 1904 - syn of: Fusinus perplexus (A. Adams, 1864) - (FASCIOLARIIDAE)
- perplexus nagasakii, Fusinus perplexus nagasakii A.W. Grabau, 1904 - syn of: Fusinus perplexus (A. Adams, 1864) - (FASCIOLARIIDAE)
- Perplicaria, Genus Perplicaria W.H. Dall, 1890 (CANCELLARIIDAE)
- perplicata, Acteocina perplicata (W.H. Dall, 1889) - (ACTEOCINIDAE)
- perplicata, Gyroscala perplicata T. Iredale, 1929 - syn of: Gyroscala lamellosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- perplicata, Inoperna perplicata (Etallon, 1863 †) - (MYTILIDAE) (FOSSIL)
- perplicata, Cubitostrea perplicata W.H. Dall, 1898 † - (OSTREIDAE) (FOSSIL)
- perplicata, Juannularia perplicata J. Gundlach, 1857 - syn of: Juannularia arguta perplicata (J. Gundlach, 1857) - (POMATIIDAE)
- perplicata, Juannularia arguta perplicata (J. Gundlach, 1857) - (POMATIIDAE)
- perplicata, Amblema plicata perplicata (T.A. Conrad, 1834) - (UNIONIDAE)
- perplicata, Pleurostemma perplicata (H.H. Beck, 1837) - (UROCOPTIDAE)
- perplicata, Brachypodella perplicata (A.E.J. Férussac, 1838) - (UROCOPTIDAE)
- perplicata, Halicardia perplicata (W.H. Dall, 1890) - (VERTICORDIIDAE)
- perplicata, Cymbiola perplicata (C. Hedley, 1902) - (VOLUTIDAE)
- perplicata, Voluta perplicata C. Hedley, 1902 - syn of: Cymbiola perplicata (C. Hedley, 1902) - (VOLUTIDAE)
- perplicata fastigiosa, Pleurostemma perplicata fastigiosa C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perplicata maisiensis, Pleurostemma perplicata maisiensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perplicata yunguensis, Pleurostemma perplicata yunguensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- perplicatella, Ptychomelania buccinella perplicatella F. Sacco, 1895 † - (THIARIDAE) (FOSSIL)
- perplicatus, Channelaxinus perplicatus (C. Salas, 1996) - (THYASIRIDAE)
- perplicatus, Xenodiscoides perplicatus (Frech, 1905 †) - (XENOCELTITIDAE) (FOSSIL)
- perplura, Anadara perplura W.P. Woodring, 1925 † - (ARCIDAE) (FOSSIL)
- perpolita, Pisinna perpolita W.L. May, 1919 - (ANABATHRIDAE)
- perpolita, Cymatosyrinx perpolita W.H. Dall, 1890 † - (DRILLIIDAE) (FOSSIL)
- perpolita, Lamprocystis perpolita (A. Mousson, 1869) - (EUCONULIDAE)
- perpolita, Fossaria perpolita (W.H. Dall, 1905) - (LYMNAEIDAE)
- perpolita, Ovirissoa perpolita (W.L. May, 1919) - (RISSOIDAE)
- Perpolita, Subgenus Nesovitrea (Perpolita) F.C. Baker, 1928 (ZONITIDAE)
- perponderosum, Ceratostoma perponderosum (W.H. Dall, 1909 †) - (MURICIDAE) (FOSSIL)
- perprima, Rhagada perprima T. Iredale, 1939 - (CAMAENIDAE)
- perprofondus, Philoxene perprofondus J. Perner, 1903 † - (EUOMPHALIDAE) (FOSSIL)
- perprotracta, Adrana perprotracta G.F. Angas, 1878 - syn of: Adrana tellinoides (G.B. I Sowerby, 1823) - (NUCULANIDAE)
- perprotracta, Yoldia perprotracta W.H. Dall, 1912 - syn of: Adrana tellinoides (G.B. I Sowerby, 1823) - (YOLDIIDAE)
- perprotractus, Conus perprotractus E.J. Petuch, 1987 - syn of: Sandericonus sanderi (E. Wils & R.G. Moolenbeek, 1979) - (CONIDAE)
- perproxima, Tinnyea aquitanica perproxima A.E.M. Cossmann & M.A. Peyrot, 1921 † - (PACHYCHILIDAE) (FOSSIL)
- perpulchra, Clavatula perpulchra S.V. Wood, 1848 † - syn of: Raphitoma perpulchra (S.V. Wood, 1848 †) - (CLAVATULIDAE) (FOSSIL)
- perpulchra, Mangelia perpulchra (S.V. Wood, 1848 †) - (MANGELIIDAE) (FOSSIL)
- perpulchra, Raphitoma perpulchra (S.V. Wood, 1848 †) - (RAPHITOMIDAE) (FOSSIL)
- perpulchrum, Cerithium perpulchrum Wood, 1848 † - (CERITHIIDAE) (FOSSIL)
- perpunctata, Urocoptis perpunctata H.A. Pilsbry, 1933 - (UROCOPTIDAE)
- perpunctatus, Nipponochloritis perpunctatus (H.A. Pilsbry, 1902) - (CAMAENIDAE)
- perpupoides, Fenella perpupoides M. Yokoyama, 1927 - syn of: Finella pupoides Adams, 1860 - (SCALIOLIDAE)
- perpurpurea, Villosa perpurpurea (I. Lea, 1861) - (UNIONIDAE)
- perpusilla, Auriculella perpusilla E.A. Smith, 1873 - (ACHATINELLIDAE)
- perpusilla, Platyla perpusilla O.W.H. Reinhardt, 1880 - syn of: Platyla polita (J.D.W. Hartmann, 1840) - (ACICULIDAE)
- perpusilla, Chrysallis chrysalidiformis perpusilla P. Bartsch, 1932 - (BRADYBAENIDAE)
- perpusilla, Sandbergeria perpusilla (J.P.S. Grateloup, 1827 †) - (DIASTOMATIDAE) (FOSSIL)
- perpusilla, Diplommatina perpusilla O.F. von Möllendorff, 1897 - (DIPLOMMATINIDAE)
- perpusilla, Gadila perpusilla (G.B. I Sowerby, 1832) - (GADILIDAE)
- perpusilla, Acme perpusilla O.W.H. Reinhardt, 1880 - syn of: Platyla polita (J.D.W. Hartmann, 1840) - (HYDROBIIDAE)
- perpusilla, Rissoa perpusilla J.P.S. Grateloup, 1847 † - (RISSOIDAE) (FOSSIL)
- perpusilla, Rissoina perpusilla G. Nevill, 1884 - (RISSOINIDAE)
- Perpusilla, Subgenus Salasiella (Perpusilla) F.C. Baker, 1941 (SPIRAXIDAE)
- perpusilla, Salasiella perpusilla (L. Pfeiffer, 1880) - (SPIRAXIDAE)
- perpusilla, Andonia perpusilla (O. Böttger, 1906 †) - (TURRIDAE) (FOSSIL)
- perpusilla, Pineria perpusilla (C.B. Wurtz, 1950) - (UROCOPTIDAE)
- perpusillum, Bittium perpusillum G.W. Tryon, 1887 - syn of: Bittium glareosum A.A. Gould, 1861 - (CERITHIIDAE)
- perpusillum, Dentalium perpusillum G.B. I Sowerby, 1832 - syn of: Gadila perpusilla (G.B. I Sowerby, 1832) - (DENTALIIDAE)
- perraudierei, Hemicycla perraudierei (J.P.A. Grasset, 1857) - (HELICIDAE)
- perregularis, Alvania perregularis F. Sacco, 1895 † - (RISSOIDAE) (FOSSIL)
- perrierae, Scalenostoma perrierae J.C.N. Barros, I.P. Padovan & F.N. Santos, 2001 - (EULIMIDAE)
- perrierae, Chersaecia perrierae (G.P.L.K. Gude, 1897) - (PLECTOPYLIDAE)
- perrierae, Graphis perrierae J.C.N. Barros & al., 2003 - (TOFANELLIDAE)
- perrieri, Heliacus perrieri A. de Rochebrune, 1881 - syn of: Heliacus infundibuliformis perrieri (A. de Rochebrune, 1881) - (ARCHITECTONICIDAE)
- perrieri, Heliacus infundibuliformis perrieri (A. de Rochebrune, 1881) - (ARCHITECTONICIDAE)
- perrieri, Vaunagites pistilliformis perrieri (Besairie, 1930 †) - (BELEMNOPSEIDAE) (FOSSIL)
- perrieri, Amphidromus perrieri A. de Rochebrune, 1882 - (CAMAENIDAE)
- perrieri, Parvicardium perrieri P. Dautzenberg & H. Fischer, 1897 - syn of: Parvicardium minimum (R.A. Philippi, 1836) - (CARDIIDAE)
- perrieri, Chilina perrieri J.F. Mabille, 1884 - (CHILINIDAE)
- perrieri, Turricula perrieri P. Dautzenberg, 1929 - syn of: Vexillum perrieri (P. Dautzenberg, 1929) - (CLAVATULIDAE)
- perrieri, Vexillum perrieri (P. Dautzenberg, 1929) - (COSTELLARIIDAE)
- perrieri, Monetaria perrieri A. de Rochebrune, 1884 - syn of: Monetaria obvelata (J.B.P.A. Lamarck, 1810) - (CYPRAEIDAE)
- perrieri, Hemicycla perrieri (J.F. Mabille, 1882) - (HELICIDAE)
- perrieri, Malletia perrieri P. Dautzenberg & H. Fischer, 1897 - syn of: Tindaria perrieri (P. Dautzenberg & H. Fischer, 1897) - (MALLETIIDAE)
- perrieri, Volvarina perrieri (A.R.J.B. Bavay, 1906) - (MARGINELLIDAE)
- perrieri, Mitra perrieri P. Dautzenberg, 1929 - syn of: Vexillum perrieri (P. Dautzenberg, 1929) - (MITRIDAE)
- perrieri, Devonia perrieri (Malard, 1904) - (MONTACUTIDAE)
- perrieri, Pleurobranchus perrieri A.J.B.M. Vayssière, 1897 - syn of: Pleurobranchus forskalii W.P.E.S. Rüppell & F.S. Leuckart, 1828 - (PLEUROBRANCHIDAE)
- perrieri, Otopoma perrieri J.R. Bourguignat, 1881 - (POMATIIDAE)
- perrieri, Tellina perrieri (V. Bertin, 1878) - (TELLINIDAE)
- perrieri, Tindaria perrieri (P. Dautzenberg & H. Fischer, 1897) - (TINDARIIDAE)
- perrieri curta, Malletia perrieri curta É.A.A. Locard, 1898 - syn of: Tindaria perrieri (P. Dautzenberg & H. Fischer, 1897) - (MALLETIIDAE)
- Perrieria, Genus Perrieria C.M. Tapparone-Canefri, 1878 (COELOCIONTIDAE)
- perrieriana, Subulina perrieriana J.R. Bourguignat, 1883 - (SUBULINIDAE)
- Perrierina, Genus Perrierina F. Bernard, 1897 (CYAMIIDAE)
- PERRIERINIDAE - syn of Family: CYAMIIDAE
- perrilliatae, Onkospira perrilliatae S. Kiel & K. Bandel, 2004 † - (EUCYCLIDAE) (FOSSIL)
- Perrimetanites, syn of: Genus Perrinites Böse , 1919 † (PERRINITIDAE) (FOSSIL)
- perrini, Cerithiopsis perrini L.G. Hertlein & A.M. Strong, 1951 - (CERITHIOPSIDAE)
- perrini, Mauritanica perrini J.R. Bourguignat, 1876 - syn of: Mauritanica perinni (J.R. Bourguignat, 1876) - (CLAUSILIIDAE)
- perrini, Acanthohoplites perrini F.M. Anderson, 1938 † - (DESHAYESITIDAE) (FOSSIL)
- perrini, Anasibirites perrini Mathews, 1929 † - syn of: Anasibirites kingianus (L. Waagen, 1895 †) - (MELAGATHICERATIDAE) (FOSSIL)
- perrini, Sinum perrini R. Arnold, 1907 † - (NATICIDAE) (FOSSIL)
- perrini, Wasatchites perrini Mathews, 1929 † - (PRIONITIDAE) (FOSSIL)
- perrini, Hyposcaphites perrini (Anderson, 1902 †) - (SCAPHITIDAE) (FOSSIL)
- perrini, Eosolen perrini (Clark, 1915 †) - (SOLENIDAE) (FOSSIL)
- perrini, Spondylus perrini Wiedley, 1928 † - (SPONDYLIDAE) (FOSSIL)
- Perrinia, Genus Perrinia H. Adams & A. Adams, 1854 (CHILODONTIDAE)
- perrinismithi, Subcolumbites perrinismithi (Arthaber, 1908 †) - (COLUMBITIDAE) (FOSSIL)
- Perrinites, Genus Perrinites Böse , 1919 † (PERRINITIDAE) (FOSSIL)
- PERRINITIDAE Miller & Furnish, 1940 † - Family (CEPHALOPODA-AMMONOIDEA-GONIATITIDA) (FOSSIL)
- Perrinoceras, Genus Perrinoceras Johnston, 1941 † (HUNGARITIDAE) (FOSSIL)
- perrinsmithi, Aulacosphinctoides perrinsmithi Uhlig, 1910 † - (PERISPHINCTIDAE) (FOSSIL)
- perrinsmithi, Tibetites perrinsmithi Mojsisovics, 1896 † - (TIBETITIDAE) (FOSSIL)
- perrisi, Mangelia perrisi É.A. Benoist in M.A. Peyrot, 1931 † - (MANGELIIDAE) (FOSSIL)
- perrisii, Alzoniella perrisii (D. Dupuy, 1851) - (HYDROBIIDAE)
- perrisii irubensis, Alzoniella perrisii irubensis H.D. Boeters, 2000 - (HYDROBIIDAE)
- Perrisonota, Genus Perrisonota Conrad, 1869 † (MALLETIIDAE) (FOSSIL)
- perrita, Pupisoma perrita T. Iredale, 1945 - (VERTIGINIDAE)
- perroensis, Exilia perroensis C. Nielsen, 2003 † - (PTYCHATRACTIDAE) (FOSSIL)
- perron, Perrona perron (J.F. Gmelin, 1791) - (CLAVATULIDAE)
- Perrona, Genus Perrona H.C.F. Schumacher, 1817 (CLAVATULIDAE)
- perronii, Clavatula perronii (L.A. Reeve, 1843) - (CLAVATULIDAE)
- perronii, Perrona perronii L.A. Reeve, 1843 - syn of: Clavatula perronii (L.A. Reeve, 1843) - (CLAVATULIDAE)
- perronii reevei, Clavatula perronii reevei H. Strebel, 1912 - (CLAVATULIDAE)
- perroquini, Palaina perroquini (J.C.H. Crosse, 1871) - (DIPLOMMATINIDAE)
- perroquini, Heterocyclus perroquini Unknown - (HYDROBIIDAE)
- perrostrata, Cardiomya perrostrata (W.H. Dall, 1881) - (CUSPIDARIIDAE)
- perroti, Orthoceras perroti A.H. Clarke † - (ORTHOCERATIDAE) (FOSSIL)
- perrotteti, Glessula perrotteti (L. Pfeiffer, 1842) - (SUBULINIDAE)
- Perrottetia, Genus Perrottetia W. Kobelt, 1905 (STREPTAXIDAE)
- perroudi, Anodonta perroudi É.A.A. Locard, 1884 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- perroudi, Unio perroudi É.A.A. Locard, 1889 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- perroudiana, Helicella perroudiana É.A.A. Locard - syn of: Helicella bolenensis É.A.A. Locard, 1882 - (HYGROMIIDAE)
- perrugata, Fusinus perrugata T.A. Conrad, 1846 - syn of: Urosalpinx perrugata (T.A. Conrad, 1846) - (FASCIOLARIIDAE)
- perrugata, Urosalpinx perrugata (T.A. Conrad, 1846) - (MURICIDAE)
- perrugata, Crassispira perrugata W.H. Dall, 1890 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- perrugosa, Panulena perrugosa T. Iredale, 1945 - (HELICARIONIDAE)
- perrus, Naesiotus perrus W.H. Dall, 1917 - (BULIMULIDAE)
- perrutila, Pinctada perrutila T. Iredale, 1939 - syn of: Pinctada albina (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- perryae, Conus perryae W.J. Clench, 1942 - syn of: Quasiconus melvilli (G.B. III Sowerby, 1879) - (CONIDAE)
- perryae, Cerodrillia perryae P. Bartsch & H.A. Rehder, 1939 - (DRILLIIDAE)
- perryae, Kurtziella perryae P. Bartsch & H.A. Rehder, 1939 - (MANGELIIDAE)
- Perryconcha, Genus Perryconcha Frýda & al., 2008 † (PORCELLIIDAE) (FOSSIL)
- perryi, Euhadra quaesita perryi (G.P. Deshayes, 1851) - (BRADYBAENIDAE)
- perryi, Volutharpa perryi (J.C. Jay, 1856) - (BUCCINIDAE)
- perryi, Casmaria perryi (T. Iredale, 1912) - (CASSIDAE)
- perryi, Cassis perryi T. Iredale, 1912 - syn of: Casmaria perryi (T. Iredale, 1912) - (CASSIDAE)
- perryi, Eotomaria perryi (Rohr, 1980 †) - (EOTOMARIIDAE) (FOSSIL)
- perryi, Mourlonia perryi Rohr, 1980 † - syn of: Eotomaria perryi (Rohr, 1980 †) - (GOSSELETINIDAE) (FOSSIL)
- perryi, Modiolus perryi Kirkland, 1996 † - (MYTILIDAE) (FOSSIL)
- perryi, Bullia perryi J.C. Jay, 1855 - (NASSARIIDAE)
- perryi, Phanerotrema perryi Rohr & Smith, 1978 † - (PHANEROTREMATIDAE) (FOSSIL)
- perryi, Cassowarioides perryi Johnston & Chatterton, 1983 † - (PSEUDOBIGALEAIDAE) (FOSSIL)
- perryi, Lotoria perryi (Perry, 1811) - (RANELLIDAE)
- perryi, Ougapia perryi (E.A. Smith, 1897) - (RHYTIDIDAE)
- perryi, Vertigo perryi V. Sterki, 1905 - (VERTIGINIDAE)
- perryi, Cymbiola pulchra perryi J.M. Ostergaard & R.H. Summers, 1957 - (VOLUTIDAE)
- Persa, syn of: Genus Tralia J.E. Gray in W.H. Turton, 1840 (ELLOBIIDAE)
- persarum, Mormula persarum J.C. Melvill & R. Standen, 1903 - (PYRAMIDELLIDAE)
- perscabrosa, Thracia perscabrosa R. Tate, 1887 † - (THRACIIDAE) (FOSSIL)
- perscalarata, Bivetiella cancellata perscalarata (F. Sacco, 1894 †) - (CANCELLARIIDAE) (FOSSIL)
- perscalata, Linopyrga perscalata (C. Hedley, 1909) - (PYRAMIDELLIDAE)
- perscalata, Pyrgulina perscalata C. Hedley, 1909 - syn of: Linopyrga perscalata (C. Hedley, 1909) - (PYRAMIDELLIDAE)
- perscita, Pitar sulcataria perscita Berezovski - (VENERIDAE)
- perscitula, Pteria perscitula T. Iredale, 1939 - syn of: Pteria penguin (P.F. Röding, 1798) - (PTERIIDAE)
- perscitus, Leptochiton perscitus P. Kaas, 1991 - (LEPTOCHITONIDAE)
- perscrupulosa, Purpurocardia perscrupulosa (J. Marwick, 1932 †) - (CARDITIDAE) (FOSSIL)
- perscrutandus, Callochiton perscrutandus (T. Iredale & A.F.B. Hull, 1929) - (CALLOCHITONIDAE)
- persculpta, Calliostoma persculpta G.B. III Sowerby, 1903 - syn of: Calliotropis persculpta (G.B. III Sowerby, 1903) - (CALLIOSTOMATIDAE)
- persculpta, Calliotropis persculpta (G.B. III Sowerby, 1903) - (CALLIOTROPIDAE)
- persculpta, Cardiomya persculpta B. Prashad, 1932 - syn of: Cardiomya alcocki (E.A. Smith, 1894) - (CUSPIDARIIDAE)
- persculpta, Poleumita persculpta J. Perner, 1907 † - syn of: Oriostoma persculpta (J. Perner, 1907 †) - (EUOMPHALIDAE) (FOSSIL)
- persculpta, Lucidella persculpta H.A. Pilsbry & A.P. Brown, 1912 - (HELICINIDAE)
- persculpta, Oriostoma persculpta (J. Perner, 1907 †) - (ORIOSTOMATIDAE) (FOSSIL)
- persculpta, Melania persculpta P. Ehrmann, 1922 - syn of: Brotia henriettae baccata (A.A. Gould, 1847) - (THIARIDAE)
- persculpta, Nodularia persculpta F. Haas, 1910 - syn of: Scabies crispata (A.A. Gould, 1843) - (UNIONIDAE)
- persculpta, Celetaia persculpta (P.B. Sarasin & K.F. Sarasin, 1898) - (VIVIPARIDAE)
- persculpta, Sinotaia persculpta P.B. Sarasin & K.F. Sarasin, 1898 - syn of: Celetaia persculpta (P.B. Sarasin & K.F. Sarasin, 1898) - (VIVIPARIDAE)
- Perse, Genus Perse B. L. Clark, 1918 † (FASCIOLARIIDAE) (FOSSIL)
- persea, Torrella immersa persea C.G. Aguayo & M.L. Jaume, 1954 - (POMATIIDAE)
- persecans, Cardioceras cordatum persecans Buckman, 1925 † - (CARDIOCERATIDAE) (FOSSIL)
- persei, Spiniphiline persei G.M. Caballer & J.A. Ortea, 2015 - (PHILINIDAE)
- persei, Portlandia persei Messjatsev, 1931 - syn of: Yoldiella propinqua (W. Leche, 1878) - (YOLDIIDAE)
- perselecta, Tonna perselecta T. Iredale, 1931 - syn of: Tonna cumingii (S.C.T. Hanley) - (TONNIDAE)
- Persephona, syn of: Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- persephone, Opisthoteuthis persephone S.S. Berry, 1918 - (OPISTHOTEUTHIDAE)
- persephone, Volutomitra persephone F.M. Bayer, 1971 - (VOLUTOMITRIDAE)
- perseptatum, Eremoceras perseptatum Flower, 1964 † - syn of: Annoceras costatum Flower, 1964 † - (ELLESMEROCERATIDAE) (FOSSIL)
- perserva, Velates perserva (J.F. Gmelin, 1791 † †) - (NERITIDAE) (FOSSIL)
- perseus, Bassleroceras perseus (Billings, 1865 †) - (BASSLEROCERATIDAE) (FOSSIL)
- perseus, Pachydiscus perseus (C.J. Maury, 1930 †) - (DESMOCERATIDAE) (FOSSIL)
- perseus, Orthoceras perseus Billings, 1865 † - syn of: Bassleroceras perseus (Billings, 1865 †) - (ORTHOCERATIDAE) (FOSSIL)
- Persia, Genus Persia Repin, 1996 † (PROSPONDYLIDAE) (FOSSIL)
- persiana, Acteocina persiana E.A. Smith, 1873 - (ACTEOCINIDAE)
- persianii, Ambigua signata persianii (N. Tiberi, 1878) - (HELICIDAE)
- Persiaster, Subgenus Mytilaster (Persiaster) Repin, 2008 † (MYTILIDAE) (FOSSIL)
- persica, Margarella persica A.A. Gould, 1852 - syn of: Margarella violacea (P.P. King & W.J. Broderip, 1832) - (CALLIOSTOMATIDAE)
- persica, Ceratomya persica Repin, 2013 † - (CERATOMYIDAE) (FOSSIL)
- persica, Clypeomorus persica R.S. Houbrick, 1985 - (CERITHIIDAE)
- persica, Abida persica E. Gittenberger, 1973 - (CHONDRINIDAE)
- persica, Euxina persica O. Böttger, 1879 - (CLAUSILIIDAE)
- persica, Euxina persica I.M. Likharev, 1962 - syn of: Illunellaria gastron (H. Nordsieck, 1995) - (CLAUSILIIDAE)
- persica, Corbula persica E.A. Smith, 1906 - (CORBULIDAE)
- persica, Erronea adusta persica (F.A. Schilder & M. Schilder, 1938) - (CYPRAEIDAE)
- persica, Splendrillia persica (E.A. Smith, 1888) - (DRILLIIDAE)
- persica, Pleuroploca persica L.A. Reeve, 1847 - syn of: Pleuroploca clava (I.H. Jonas, 1846) - (FASCIOLARIIDAE)
- persica, Opalocina persica Glover & J.D. Taylor, 2016 - (LUCINIDAE)
- persica, Radix persica (A. Issel, 1865) - (LYMNAEIDAE)
- persica, Margarites persica A.A. Gould, 1852 - syn of: Margarella violacea (P.P. King & W.J. Broderip, 1832) - (MARGARITIDAE)
- persica, Purpura persica (C. Linnaeus, 1758) - (MURICIDAE)
- persica, Coralliophila persica J.C. Melvill, 1897 - (MURICIDAE)
- persica, Crenella persica E.A. Smith, 1906 - syn of: Solamen persicum (J.F. Gmelin, 1791) - (MYTILIDAE)
- persica, Bullia persica E.A. Smith, 1878 - (NASSARIIDAE)
- persica, Taningia persica (A. Naef, 1923) - (OCTOPOTEUTHIDAE)
- persica, Asaphis persica A. Adams, 1855 - syn of: Corbula persica E.A. Smith, 1906 - (PSAMMOBIIDAE)
- persica, Tellina persica (W.H. Dall & C.T. Simpson, 1901) - (TELLINIDAE)
- persica, Phyllodina persica W.H. Dall & C.T. Simpson, 1901 - syn of: Tellina persica (W.H. Dall & C.T. Simpson, 1901) - (TELLINIDAE)
- persica, Terebra persica E.A. Smith, 1875, 1877 - syn of: Granuliterebra bathyrhaphe (E.A. Smith, 1875) - (TEREBRIDAE)
- persica, Bolma persica (W.H. Dall, 1907) - (TURBINIDAE)
- persica, Pleurotoma persica E.A. Smith, 1888 - syn of: Splendrillia persica (E.A. Smith, 1888) - (TURRIDAE)
- persica, Vallonia persica O.W. Von Rosen, 1892 - (VALLONIIDAE)
- persica, Meretrix persica Cox, 1936 † - (VENERIDAE) (FOSSIL)
- persica, Clausinella persica L.R. Cox, 1936 † - (VENERIDAE) (FOSSIL)
- persica, Paphia persica L.R. Cox, 1936 † - (VENERIDAE) (FOSSIL)
- persica, Oligolimax persica O. Böttger, 1889 - syn of: Phenacolimax annularis (S.E. Studer, 1820) - (VITRINIDAE)
- persica erectospinosa, Bolma persica erectospinosa (T. Habe & T.A. Okutani, 1980) - (TURBINIDAE)
- persica jacintha, Drillia persica jacintha J.C. Melvill, 1917 - syn of: Splendrillia persica (E.A. Smith, 1888) - (DRILLIIDAE)
- persica paulhessei, Euxina persica paulhessei W.A. Lindholm, 1925 - (CLAUSILIIDAE)
- persica rackae, Euxina persica rackae R.A.M. Brandt, 1961 - (CLAUSILIIDAE)
- persicina, Persicitheca persicina Y.H. Duan, 1984 † - (PERSICITHECIDAE) (FOSSIL)
- Persicitheca, Genus Persicitheca Duan , 1984 † (PERSICITHECIDAE) (FOSSIL)
- PERSICITHECIDAE Duan, 1984 † - Family (HYOLITHA-CALYPTOPTOMATIDA) (FOSSIL)
- Persicola, syn of: Genus Persicula H.C.F. Schumacher, 1817 (CYSTISCIDAE)
- Persicula, Genus Persicula H.C.F. Schumacher, 1817 (CYSTISCIDAE)
- persicula, Persicula persicula (C. Linnaeus, 1758) - (CYSTISCIDAE)
- persicula, Persicula persicula P.F. Röding, 1798 - syn of: Persicula cornea (J.B.P.A. Lamarck, 1822) - (CYSTISCIDAE)
- persicula, Marginella persicula C. Linnaeus, 1758 - syn of: Persicula persicula (C. Linnaeus, 1758) - (MARGINELLIDAE)
- persicula avellana, Persicula persicula avellana (J.B.P.A. Lamarck, 1822) - (CYSTISCIDAE)
- persicula persiculocingulata, Persicula persicula persiculocingulata Tournier, 1997 - syn of: Persicula persiculocingulata (Tournier, 1997) - (CYSTISCIDAE)
- persicula pseudocingulata, Persicula persicula pseudocingulata Tournier, 1997 - syn of: Persicula persiculocingulata (Tournier, 1997) - (CYSTISCIDAE)
- persiculocingulata, Persicula persiculocingulata (Tournier, 1997) - (CYSTISCIDAE)
- persiculocingulata, Marginella persiculocingulata Tournier, 1997 - syn of: Persicula persiculocingulata (Tournier, 1997) - (MARGINELLIDAE)
- persicum, Buccinum persicum C. Linnaeus, 1758 - syn of: Purpura persica (C. Linnaeus, 1758) - (BUCCINIDAE)
- persicum, Iranoknemiceras persicum M. Collignon, 1983 † - (KNEMICERATIDAE) (FOSSIL)
- persicum, Solamen persicum (J.F. Gmelin, 1791) - (MYTILIDAE)
- persicus, Euchelus persicus (E.C. Von Martens, 1874) - (CHILODONTIDAE)
- persicus, Limax persicus H.R. Simroth, 1910 - syn of: Caspilimax keyserlingi (E.C. Von Martens, 1880) - (LIMACIDAE)
- persicus, Nassarius persicus (E.C. Von Martens, 1874) - (NASSARIIDAE)
- persicus, Nassarius persicus Cox, 1936 - syn of: Nassarius delicatus (A. Adams, 1852) - (NASSARIIDAE)
- persicus, Planorbis persicus C.M.F. Ancey, 1900 - syn of: Planorbis intermixtus A. Mousson, 1874 - (PLANORBIDAE)
- persicus, Conomurex persicus (W.J. Swainson, 1821) - (STROMBIDAE)
- persicus, Strombus persicus W.J. Swainson, 1821 - syn of: Conomurex persicus (W.J. Swainson, 1821) - (STROMBIDAE)
- persicus, Euclanculus persicus T. Habe & T. Shikama, 1964 † - (TROCHIDAE) (FOSSIL)
- Persikima, syn of: Genus Tridacna J.G. Bruguičre, 1797 (TRIDACNIDAE)
- persimile, Australonema persimile (Spitz, 1907 †) - (ORIOSTOMATIDAE) (FOSSIL)
- persimile, Cyclonema persimile Spitz, 1907 † - syn of: Australonema persimile (Spitz, 1907 †) - (PLATYCERATIDAE) (FOSSIL)
- persimilis, Acteocina persimilis (W.H. Dall †) - (ACTEOCINIDAE) (FOSSIL)
- persimilis, Calocochlia persimilis A.E.J. Férussac, 1850 - (BRADYBAENIDAE)
- persimilis, Semicassis bisulcata persimilis T. Kira, 1959 - (CASSIDAE)
- persimilis, Aforia persimilis (W.H. Dall, 1890) - (COCHLESPIRIDAE)
- persimilis, Monilearia persimilis (R.J. Shuttleworth, 1852) - (COCHLICELLIDAE)
- persimilis, Cyrtodonta persimilis Ulrich, 1894 † - (CYRTODONTIDAE) (FOSSIL)
- persimilis, Liospira persimilis Ulrich & Scofield, 1897 † - (EOTOMARIIDAE) (FOSSIL)
- persimilis, Melanella persimilis (J.T. Kuroda & T. Habe, 1971) - (EULIMIDAE)
- persimilis, Glycymeris persimilis (T. Iredale, 1939) - (GLYCYMERIDIDAE)
- persimilis, Michelia persimilis C.M. Poulsen, 1974 † - (MURCHISONIIDAE) (FOSSIL)
- persimilis, Gudeodiscus persimilis G.P.L.K. Gude, 1901 - syn of: Gudeodiscus dautzenbergi (G.P.L.K. Gude, 1901) - (PLECTOPYLIDAE)
- persimilis, Turrithyra deceptor persimilis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- persimilis, Volvulella persimilis (O.A.L. Mörch, 1875) - (RHIZORIDAE)
- persimilis, Jerania persimilis D. Korn & al., 2010 † - (TEMERTASSETIIDAE) (FOSSIL)
- persimilis, Antigona persimilis (T. Iredale, 1930) - (VENERIDAE)
- persimilis blanca, Aforia persimilis blanca (W.H. Dall, 1919) - (COCHLESPIRIDAE)
- persimilis boacana, Calocochlia persimilis boacana P. Bartsch, 1930 - (BRADYBAENIDAE)
- persimilis callimorpha, Calocochlia persimilis callimorpha P. Bartsch, 1930 - (BRADYBAENIDAE)
- persimilis callipepla, Calocochlia persimilis callipepla P. Bartsch, 1930 - (BRADYBAENIDAE)
- persimilis podagra, Calocochlia persimilis podagra P. Bartsch, 1930 - (BRADYBAENIDAE)
- persimplex, Gosseletina persimplex Girty, 1915 † - (GOSSELETINIDAE) (FOSSIL)
- persimplica, Eulima persimplica B. Wade, 1926 † - (EULIMIDAE) (FOSSIL)
- persimplicula, Chlamys tauroperstriaus persimplicula F. Sacco, 1897 - (PECTINIDAE)
- persinuosa, Gastrana fragilis persinuosa A.E.M. Cossmann & M.A. Peyrot, 1910 † - (TELLINIDAE) (FOSSIL)
- persipulla, Astarte persipulla Repin, 2008 † - (ASTARTIDAE) (FOSSIL)
- Persipyrgula, Genus Persipyrgula Delicado, Pešic & Glöer, 2016 (HYDROBIIDAE)
- persistens, Conus persistens T.A. de M. Monterosato, P.M. Pallary in W. Kobelt, 1908 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- Persististrombus, Genus Persististrombus G.C. Kronenberg & Y.C. Lee, 2007 (STROMBIDAE)
- persolida, Lucinoma persolida (F. Sacco, 1901 †) - (LUCINIDAE) (FOSSIL)
- persoluta, Pseudocampylaea persoluta E.A. Smith, 1892 - syn of: Pseudohelenoconcha spurca (G.B. Sowerby, 1844) - (HYGROMIIDAE)
- persoluta, Macromphalus persoluta G. Nevill - (VANIKORIDAE)
- persolutus, Fossarus persolutus Nevill, 1878 - syn of: Fossarus tornatilis (A.A. Gould, 1859) - (PLANAXIDAE)
- persona, Acmaea persona J. Rathke, 1833 - syn of: Lottia persona (J. Rathke, 1833) - (ACMAEIDAE)
- persona, Lottia persona (J. Rathke, 1833) - (LOTTIIDAE)
- persona, Tectura persona J. Rathke, 1833 - syn of: Lottia persona (J. Rathke, 1833) - (LOTTIIDAE)
- Persona, syn of: Genus Distorsio P.F. Röding, 1798 (PERSONIDAE)
- personata, Mioawateria personata (Powell, 1942 †) - (RAPHITOMIDAE) (FOSSIL)
- personata, Ribeiria personata Thoral, 1935 † - (RIBEIRIIDAE) (FOSSIL)
- personata, Teredina personata (J.B.P.A. Lamarck, 1806 †) - (TEREDINIDAE) (FOSSIL)
- personata, Epioblasma personata (T. Say, 1829) - (UNIONIDAE)
- personata, Circe scripta personata G.P. Deshayes, 1854 - (VENERIDAE)
- personata, Vertigo personata A. Moquin-Tandon, 1856 - syn of: Vertigo moulinsiana (D. Dupuy, 1849) - (VERTIGINIDAE)
- personatum, Crucibulum personatum A.M. Keen, 1958 - (CALYPTRAEIDAE)
- personatum, Ovatella personatum A. Michaud, 1831 - syn of: Myosotella myosotis (J.P.R. Draparnaud, 1801) - (ELLOBIIDAE)
- personatum, Isognomostoma personatum J.B.P.A. Lamarck, 1792 - syn of: Isognomostoma isognomostoma (J.S. Schröter, 1784) - (HELICIDAE)
- personatum, Pisidium personatum A.W. Malm, 1855 - (SPHAERIIDAE)
- personatum, Malea personatum K.T. Menke, 1828 - syn of: Malea ringens (W.J. Swainson, 1822) - (TONNIDAE)
- Personatus, Subgenus Cochlostoma (Personatus) C.A. Westerlund, 1883 (COCHLOSTOMATIDAE)
- personatus, Conus personatus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Leptoconus ammiralis (C. Linnaeus, 1758) - (CONIDAE)
- personatus, Muricopsis personatus F. Settepassi, 1977 ex T.A. de M. Monterosato MS - syn of: Ocinebrina hispidula (P.M. Pallary, 1904) - (MURICIDAE)
- personatus, Clanculus personatus (R.A. Philippi, 1849) - (TROCHIDAE)
- personatus, Unio personatus T.A. Conrad, 1834 - syn of: Fusconaia subrotunda (I. Lea, 1831) - (UNIONIDAE)
- Personella, Genus Personella T.A. Conrad, 1865 † (PERSONIDAE) (FOSSIL)
- PERSONIDAE Gray, 1854 - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA)
- Personopsis, Genus Personopsis A.G. Beu, 1988 (PERSONIDAE)
- perspeciosum, Epitonium perspeciosum T. Iredale, 1929 - syn of: Epitonium parspeciosum (T. Iredale, 1929) - (EPITONIIDAE)
- perspeciosus, Marmarostoma argyrostomus perspeciosus (T. Iredale, 1929) - (TURBINIDAE)
- perspecta, Warthia perspecta E.M. Fletcher, 1958 † - (EUPHEMITIDAE) (FOSSIL)
- perspecta, Euspira perspecta R.P. Whitfield, 1935 † - (NATICIDAE) (FOSSIL)
- perspecta, Ericusa sowerbyi perspecta T. Iredale, 1929 - (VOLUTIDAE)
- perspecta texana, Euspira perspecta texana Garvie, 2013 † - (NATICIDAE) (FOSSIL)
- perspectiva, Architectonica perspectiva (C. Linnaeus, 1767) - (ARCHITECTONICIDAE)
- perspectiva, Trigonostoma perspectiva T.A. Conrad, 1834 † - (CANCELLARIIDAE) (FOSSIL)
- perspectiva, Kalitinaia perspectiva B. Hausdorf, 1993 - (HYGROMIIDAE)
- perspectiva, Natica perspectiva B. Rogers, 1839 † - (NATICIDAE) (FOSSIL)
- perspectiva, Globisinum perspectiva (R. Tate, 1893 †) - (NATICIDAE) (FOSSIL)
- perspectiva, Ramsdenia perspectiva (J. Gundlach in L. Pfeiffer, 1859) - (POMATIIDAE)
- perspectiva, Pseudoliva vetusta perspectiva T.A. Conrad, 1860 - (PSEUDOLIVIDAE)
- perspectiva, Pyrgulina perspectiva C. Hedley, 1902 - syn of: Egilina callista (J.C. Melvill, 1893) - (PYRAMIDELLIDAE)
- perspectiva, Enida perspectiva G.B. Sowerby, 1900 - (TROCHIDAE)
- perspectiva, Vallonia perspectiva V. Sterki, 1893 - (VALLONIIDAE)
- perspectiva fressa, Architectonica perspectiva fressa T. Iredale, 1936 - syn of: Architectonica perspectiva (C. Linnaeus, 1767) - (ARCHITECTONICIDAE)
- perspectiva modesta, Architectonica perspectiva modesta R.A. Philippi, 1849 - syn of: Architectonica modesta (R.A. Philippi, 1849) - (ARCHITECTONICIDAE)
- Perspectiva-group, syn of: Genus Architectonica P.F. Röding, 1798 (ARCHITECTONICIDAE)
- perspectiviforme, Architectonica perspectiviforme N. Tiberi, 1872 - syn of: Basisulcata lepida (F.M. Bayer, 1942) - (ARCHITECTONICIDAE)
- perspectiviunculum, Heliacus perspectiviunculum R.A. Philippi, 1853 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (ARCHITECTONICIDAE)
- perspectiviunculum depressum, Architectonica perspectiviunculum depressum R.A. Philippi, 1853 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (ARCHITECTONICIDAE)
- perspectiviunculum planulatum, Architectonica perspectiviunculum planulatum S.C.T. Hanley, 1863 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (ARCHITECTONICIDAE)
- perspectiviunculus, Heliacus perspectiviunculus L.W. Dillwyn, 1817 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (ARCHITECTONICIDAE)
- perspectiviunculus, Trochus perspectiviunculus L.W. Dillwyn, 1817 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (TROCHIDAE)
- perspectiviunculus planulata, Torinia perspectiviunculus planulata S.C.T. Hanley, 1863 - syn of: Heliacus variegatus (J.F. Gmelin, 1791) - (ARCHITECTONICIDAE)
- perspectivum, Architectonica perspectivum R.B. Hinds, 1844 - syn of: Architectonica trochlearis (R.B. Hinds, 1844) - (ARCHITECTONICIDAE)
- perspectivum, Plectostoma perspectivum J.J. Vermeulen, 1994 - (DIPLOMMATINIDAE)
- perspectivum, Sinum perspectivum T. Say, 1831 - (NATICIDAE)
- perspectivum, Stacheoceras perspectivum C. Gemmellaro, 1887 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- perspectivum heurni, Architectonica perspectivum heurni F.M. Bayer, 1940 - syn of: Architectonica perspectiva (C. Linnaeus, 1767) - (ARCHITECTONICIDAE)
- perspectivus, Architectonica perspectivus J.H. Chemnitz, 1781 - syn of: Architectonica maculata picta R.A. Philippi, 1849 - (ARCHITECTONICIDAE)
- perspectivus, Naesiotus perspectivus (L. Pfeiffer, 1846) - (BULIMULIDAE)
- perspectivus, Astele perspectivus A. Adams, 1864 - syn of: Astele subcarinata W.J. Swainson, 1855 - (CALLIOSTOMATIDAE)
- perspectivus, Calliostoma perspectivus F.C.L. Koch in R.A. Philippi, 1843 - syn of: Calliostoma jujubinum (J.F. Gmelin, 1791) - (CALLIOSTOMATIDAE)
- perspectivus, Gonyodiscus perspectivus (J.K. Megerle Von Mühlfeld, 1816) - (DISCIDAE)
- perspectivus, Euomphalus perspectivus Swallow, 1863 † - (EUOMPHALIDAE) (FOSSIL)
- perspectivus, Helix perspectivus J.K. Megerle Von Mühlfeld, 1816 - syn of: Gonyodiscus perspectivus (J.K. Megerle Von Mühlfeld, 1816) - (HELICIDAE)
- perspectivus, Ortizius perspectivus (W. Kobelt, 1881) - (OXYCHILIDAE)
- perspectivus, Trochus perspectivus C. Linnaeus, 1758 - syn of: Architectonica perspectiva (C. Linnaeus, 1767) - (TROCHIDAE)
- perspectivus australis, Trochus perspectivus australis J.H. Chemnitz, 1795 - syn of: Architectonica maxima R.A. Philippi, 1849 - (TROCHIDAE)
- perspicillata, Rostanga perspicillata L.S.R. Bergh, 1881 - syn of: Rostanga rubra (A. Risso, 1818) - (DISCODORIDIDAE)
- Perspicioscala, Subgenus Epitonium (Perspicioscala) T. Nakayama, 2000 (EPITONIIDAE)
- perspicua, Bogoslovskya perspicua P.A. Zhuravleva, 2006 † - (BOGOSLOVSKYIDAE) (FOSSIL)
- perspicua, Azeca perspicua Brusina, 1902 † - (COCHLICOPIDAE) (FOSSIL)
- perspicua, Eulima perspicua (W.R.B. Oliver, 1915) - (EULIMIDAE)
- perspicua, Hemiliostraca perspicua (W.R.B. Oliver, 1915) - syn of: Eulima perspicua (W.R.B. Oliver, 1915) - (EULIMIDAE)
- perspicua, Helix perspicua C. Linnaeus, 1758 - (HELICIDAE)
- perspicua, Raeta perspicua F.W. Hutton, 1873 - syn of: Raeta plicatella (J.B.P.A. Lamarck, 1818) - (MACTRIDAE)
- perspicua, Eratoidea perspicua T. McCleery, 2011 - (MARGINELLIDAE)
- perspicua, Toxoconcha perspicua Böhm, 1895 † - (PROTORCULIDAE) (FOSSIL)
- perspicua, Odostomia perspicua K.H.J. Thiele, 1930 - (PYRAMIDELLIDAE)
- perspicua, Lamellaria perspicua (C. Linnaeus, 1758) - (VELUTINIDAE)
- perspicua lata, Lamellaria perspicua lata J.G. Jeffreys, 1867 - syn of: Lamellaria latens (O.F. Müller, 1776) - (VELUTINIDAE)
- perspicua mopsicolor, Lamellaria perspicua mopsicolor Er. Marcus, 1958 - syn of: Lamellaria mopsicolor Er. Marcus, 1958 - (VELUTINIDAE)
- perspicuaeformis, Gulella perspicuaeformis (R. Sturany, 1898) - (STREPTAXIDAE)
- perspicuum, Parvamussium perspicuum H.H. Dijkstra & P. Maestrati, 2013 - (PROPEAMUSSIIDAE)
- perspicuum, Teinostoma perspicuum (A. Adams, 1861) - (TORNIDAE)
- perspicuus, Polinices perspicuus (C.A. Récluz, 1850) - (NATICIDAE)
- perspicuus, Cleistosphinctes perspicuus C.F. Parona, 1896 † - (PERISPHINCTIDAE) (FOSSIL)
- perspicuus, Parmellops perspicuus Hyman & Ponder, 2016 - (VITRINIDAE)
- perspinosa, Melongena perspinosa H.A. Pilsbry & E.G. Vanatta, 1934 - syn of: Melongena corona (J.F. Gmelin, 1791) - (MELONGENIDAE)
- perspirata, Hindsiclava perspirata (W.H. Dall, 1890 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- persquamifer, Lima sowerbyi persquamifer T. Iredale, 1939 - (LIMIDAE)
- Perssuakiella, Genus Perssuakiella Peel , 1988 † (HELCIONELLIDAE) (FOSSIL)
- perstica, Ransoniella perstica T. Iredale, 1939 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- persticta, Palmadusta persticta T. Iredale, 1939 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- persticta, Ransoniella persticta T. Iredale, 1939 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- persticta, Notadusta punctata persticta L. Dolin, 2007 - (CYPRAEIDAE)
- perstrialis, Kitikamispira perstrialis (Fenton & Fenton, 1924 †) - (EUOMPHALOIDEA (unassigned)) (FOSSIL)
- perstrialis, Cyclonema perstrialis Fenton & Fenton, 1924 † - syn of: Kitikamispira perstrialis (Fenton & Fenton, 1924 †) - (PLATYCERATIDAE) (FOSSIL)
- perstriata, Montenegrina perstriata A.J. Wagner, 1918 - (CLAUSILIIDAE)
- perstriata, Perrierina perstriata C.A. Fleming, 1948 - (CYAMIIDAE)
- perstriata, Lophonema perstriata (Billings, 1859 †) - (HELICOTOMIDAE) (FOSSIL)
- perstriata, Rhomboidella perstriata (C. Hedley, 1906) - (MYTILIDAE)
- perstriata, Nerita perstriata A. Mousson - syn of: Theodoxus cariosus (W. Wood, 1828) - (NERITIDAE)
- perstriata, Goniobasis perstriata (I. Lea, 1852) - (PLEUROCERIDAE)
- perstriata, Rissopsetia perstriata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- perstriata, Eulimella perstriata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- perstriata callistoma, Montenegrina perstriata callistoma Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- perstriata clathrata, Goniobasis perstriata clathrata I. Lea - (PLEUROCERIDAE)
- perstriata crassa, Montenegrina perstriata crassa Z. Eröss & M. Szekeres, 1999 - (CLAUSILIIDAE)
- perstriata crispa, Goniobasis perstriata crispa I. Lea, 1862 - (PLEUROCERIDAE)
- perstriata decampii, Goniobasis perstriata decampii I. Lea, 1863 - (PLEUROCERIDAE)
- perstriata diminuta, Montenegrina perstriata diminuta H. Nordsieck, 1972 - (CLAUSILIIDAE)
- perstriata drimica, Montenegrina perstriata drimica H. Nordsieck, 1972 - (CLAUSILIIDAE)
- perstriata gracilis, Montenegrina perstriata gracilis Z. Eröss & M. Szekeres, 2006 - (CLAUSILIIDAE)
- perstriata mavrovoensis, Montenegrina perstriata mavrovoensis H. Nordsieck, 2009 - (CLAUSILIIDAE)
- perstriata nana, Montenegrina perstriata nana Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- perstriata ochridensis, Montenegrina perstriata ochridensis (A.J. Wagner, 1925) - (CLAUSILIIDAE)
- perstriata ohridensis, Montenegrina perstriata ohridensis A.J. Wagner, 1918 - syn of: Montenegrina perstriata ochridensis (A.J. Wagner, 1925) - (CLAUSILIIDAE)
- perstriata radikae, Montenegrina perstriata radikae H. Nordsieck, 1972 - (CLAUSILIIDAE)
- perstriata skipetarica, Montenegrina perstriata skipetarica L. Soós, 1940 - syn of: Montenegrina skipetarica L. Soós, 1940 - (CLAUSILIIDAE)
- perstriata subcristatula, Montenegrina perstriata subcristatula H. Nordsieck, 1977 - (CLAUSILIIDAE)
- perstriata tenebrosa, Montenegrina perstriata tenebrosa H. Nordsieck, 2009 - (CLAUSILIIDAE)
- perstriatulus, Gyraulus perstriatulus H.B. Preston, 1916 - (PLANORBIDAE)
- perstriatum, Cymatoceras perstriatum Steuer, 1897 † - (CYMATOCERATIDAE) (FOSSIL)
- perstriatus, Joleaudella perstriatus (Foerste, 1924 †) - (BELLEROPHONTIDAE) (FOSSIL)
- perstriatus, Sigmataxis perstriatus H.A. Pilsbry, 1907 - (OLEACINIDAE)
- perstriatus, Tropidodiscus perstriatus Foerste, 1924 † - syn of: Joleaudella catilloides (W.J. Raymond, 1906 †) - (TROPIDODISCIDAE) (FOSSIL)
- perstriatus, Unio perstriatus I. Lea, 1852 - syn of: Elliptio arctata T.A. Conrad, 1834 - (UNIONIDAE)
- persuasa, Strophiops persuasa C.J. Maynard & W.F. Clapp, 1921 - (CERIONIDAE)
- persubtilis, Leptachatina persubtilis C.M. Cooke, 1910 - (AMASTRIDAE)
- persulcata, Corbula persulcata Stanton, 1895 † - syn of: Cuspidaria persulcata (Stanton, 1895 †) - (CORBULIDAE) (FOSSIL)
- persulcata, Cuspidaria persulcata (Stanton, 1895 †) - (CUSPIDARIIDAE) (FOSSIL)
- persulcata, Actinopteria persulcata (McCoy) † - (PTERINEIDAE) (FOSSIL)
- persulcata, Athleta anticingulata persulcata (G.B. Pritchard, 1913) - (VOLUTIDAE)
- persulcatus, Cyclolobus persulcatus Rothpletz, 1892 † - (CYCLOLOBIDAE) (FOSSIL)
- persulcatus, Hemihoplites soulieri persulcatus (Renngarten, 1951 †) - (HEMIHOPLITIDAE) (FOSSIL)
- persulcatus, Volutaxis nitidus persulcatus (H.B. Baker, 1940) - (SPIRAXIDAE)
- persuturata, Bythinella rufescens persuturata A. Bofill, F. Haas & J.B. Aguilar-Amat, 1921 - (BYTHINELLIDAE)
- persuturata, Prososthenia oblonga persuturata (F. Sacco, 1895 †) - (HYDROBIIDAE) (FOSSIL)
- persuturata, Avenionia brevis persuturata A. Bofill, 1921 - (HYDROBIIDAE)
- persuturatus, Potamides persuturatus A.E.M. Cossmann & M.A. Peyrot, 1922 † - syn of: Tympanotonos tournoueri (C. Mayer, 1878 †) - (POTAMIDIDAE) (FOSSIL)
- persuturum, Epitonium persuturum W.H. Dall, 1917 - syn of: Epitonium hindsii (P.P. Carpenter, 1856) - (EPITONIIDAE)
- pertabulata, Mangelia pertabulata R. Sturany, 1903 - (MANGELIIDAE)
- pertenera, Myrteopsis pertenera W.H. Dall, 1903 † - (LUCINIDAE) (FOSSIL)
- pertenue, Eurydesma pertenue Reed, 1936 † - (EURYDESMATIDAE) (FOSSIL)
- pertenue, Propilidium pertenue J.G. Jeffreys, 1882 - (LEPETIDAE)
- pertenue, Pierosoma tenue pertenue (H.B. Baker, 1940) - (PLANORBIDAE)
- pertenuicosta, Scapharca pertenuicosta C.J. Maury, 1924 † - (ARCIDAE) (FOSSIL)
- pertenuiformis, Sphaeroceramus pertenuiformis Walaszczyk, Cobban & Harries, 2001 † - (INOCERAMIDAE) (FOSSIL)
- pertenuis, Aegista kobensis pertenuis H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- pertenuis, Colus latericeus pertenuis (E.R. Sykes, 1911) - (BUCCINIDAE)
- pertenuis, Bulla pertenuis J.W. Mighels, 1843 - syn of: Retusa obtusa (G. Montagu, 1808) - (BULLIDAE)
- pertenuis, Fartulum pertenuis C.R. Laws, 1941 † - (CAECIDAE) (FOSSIL)
- pertenuis, Cylichna pertenuis E.A. Smith, 1875 - (CYLICHNIDAE)
- pertenuis, Fusinus pertenuis E.R. Sykes, 1911 - syn of: Colus latericeus (H.P.C. Møller, 1842) - (FASCIOLARIIDAE)
- pertenuis, Loripes pertenuis E.A. Smith, 1881 - (LUCINIDAE)
- pertenuis, Paranannites pertenuis Smith, 1932 † - syn of: Paranannites aspenensis A. Hyatt & Smith, 1905 † - (MELAGATHICERATIDAE) (FOSSIL)
- pertenuis, Pierosoma tenuis pertenuis (F.C. Baker, 1940) - (PLANORBIDAE)
- pertenuis, Chemnitzia pertenuis (W.M. Gabb, 1873 †) - (PYRAMIDELLIDAE) (FOSSIL)
- pertenuis, Retusa pertenuis J.W. Mighels, 1843 - syn of: Retusa obtusa (G. Montagu, 1808) - (RETUSIDAE)
- pertenuis, Camerunarion pertenuis (A. d'Ailly, 1896) - (UROCYCLIDAE)
- pertenuis, Egesta pertenuis W.M. Gabb, 1869 † - (VENERIDAE) (FOSSIL)
- pertenuis candidula, Retusa pertenuis candidula É.A.A. Locard, 1892 - syn of: Retusa candidula (É.A.A. Locard, 1892) - (RETUSIDAE)
- pertexta, Alathyria pertexta T. Iredale, 1934 - (HYRIIDAE)
- pertexta magnifica, Alathyria pertexta magnifica D.F. McMichael & I.D. Hiscock, 1958 - syn of: Alathyria pertexta T. Iredale, 1934 - (HYRIIDAE)
- pertextum, Cenoceras pertextum (Dumortier, 1867 †) - (CENOCERATIDAE) (FOSSIL)
- pertextus, Nautilus pertextus Dumortier, 1867 † - syn of: Cenoceras pertextum (Dumortier, 1867 †) - (NAUTILIDAE) (FOSSIL)
- perthensis, Baylea perthensis Dickins, 1963 † - (GOSSELETINIDAE) (FOSSIL)
- perthensis, Claraia perthensis Dickins & McTavish, 1963 † - (PTERINOPECTINIDAE) (FOSSIL)
- pertica, Prososthenia pertica Andreescu & Pana, 1985 † - (HYDROBIIDAE) (FOSSIL)
- perticata, Drepanomenia perticata L. Salvini-Plawén, 1978 - (DREPANOMENIIDAE)
- pertinax, Microdrillia pertinax C. Hedley, 1922 - syn of: Turridrupa pertinax (C. Hedley, 1922) - (BORSONIIDAE)
- pertinax, Buccinulum pertinax (E.C. Von Martens, 1878) - (BUCCINIDAE)
- pertinax, Calliostoma pertinax B.A. Marshall, 1995 - (CALLIOSTOMATIDAE)
- pertinax, Andreioceras pertinax P.A. Zhuravleva, 1972 † - syn of: Lysagoroceras subfusiforme (Münster, 1840 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- pertinax, Strombus pertinax P.L. Duclos in J.C. Chenu, 1844 - syn of: Tricornis tricornis (J. Lightfoot, 1786) - (STROMBIDAE)
- pertinax, Turridrupa pertinax (C. Hedley, 1922) - (TURRIDAE)
- pertinax finlayi, Buccinulum pertinax finlayi A.W.B. Powell, 1929 - (BUCCINIDAE)
- pertincta, Leukoma pertincta W.H. Dall, 1902 - (VENERIDAE)
- pertinens, Orthoceras pertinens Blake † - (ORTHOCERATIDAE) (FOSSIL)
- pertingens, Lyrodus pertingens T. Iredale, 1932 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- pertosta, Chondrothyra tosta pertosta C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- pertracheata, Plagioglypta pertracheata (H.P. Plate, 1908) - (DENTALIIDAE)
- pertransiens, Tirnovella pertransiens (G. Sayn, 1901 †) - (NEOCOMITIDAE) (FOSSIL)
- pertranslucida, Rissoa pertranslucida W.L. May, 1913 - syn of: Putilla porcellana (R. Tate & W.L. May, 1900) - (RISSOIDAE)
- pertransversa, Anadara diluvii pertransversa F. Sacco, 1897 † - (ARCIDAE) (FOSSIL)
- pertricosa, Dipnelix pertricosa T. Iredale, 1937 - (CHAROPIDAE)
- pertristis, Mesembrinus pertristis (H.A. Pilsbry, 1898) - (BULIMULIDAE)
- pertubata, Poroleda pertubata T. Iredale, 1924 - syn of: Poroleda lanceolata (F.W. Hutton, 1885) - (NUCULANIDAE)
- pertuberculiferum, Ranella pertuberculiferum L.M.D. Bellardi in F. Sacco, 1872 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- pertumida, Pisinna pertumida W.L. May, 1915 - (ANABATHRIDAE)
- pertumida, Ovirissoa pertumida (W.L. May, 1915) - (RISSOIDAE)
- pertumidus, Amphithalamus pertumidus W.L. May, 1915 - syn of: Ovirissoa pertumida (W.L. May, 1915) - (ANABATHRIDAE)
- pertumidus, Sibyllonautilus pertumidus (Arthaber, 1896 †) - (TAINOCERATIDAE) (FOSSIL)
- perturbata, Pyrgulopsis perturbata R. Hershler, 1989 - (HYDROBIIDAE)
- perturbata, Chondrothyrella perturbata C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- perturbata, Eulimella perturbata A. Peñas, E. Rolán & F. Swinnen, 2014 - (PYRAMIDELLIDAE)
- perturbata, Gulella perturbata (H.B. Preston, 1913) - (STREPTAXIDAE)
- perturbator, Chrysallis perturbator P. Bartsch, 1932 - (BRADYBAENIDAE)
- perturbatrix, Strigatella perturbatrix C.J. Maury, 1917 † - syn of: Enaeta perturbatrix (C.J. Maury, 1917 †) - (MITRIDAE) (FOSSIL)
- perturbatrix, Enaeta perturbatrix (C.J. Maury, 1917 †) - (VOLUTIDAE) (FOSSIL)
- perturbatus, Stenostylus perturbatus A.S.H. Breure, 2011 - (ORTHALICIDAE)
- perturbatus, Modestospira perturbatus (Murchison, 1839 †) - (SINUITIDAE) (FOSSIL)
- perturbatus, Tropidodiscus perturbatus (J. de C. Sowerby) † - (TROPIDODISCIDAE) (FOSSIL)
- perturrita, Terebra perturrita F. Sacco, 1891 † - (TEREBRIDAE) (FOSSIL)
- pertusa, Pomacea pertusa G.B. III Sowerby, 1894 - syn of: Pomacea castelloi (G.B. III Sowerby, 1894) - (AMPULLARIIDAE)
- pertusa, Globularia pertusa (F. Stoliczka in Laube, 1867 †) - (AMPULLINIDAE) (FOSSIL)
- pertusa, Cominella pertusa R. Tate, 1888 † - (BUCCINIDAE) (FOSSIL)
- pertusa, Chaetopleura pertusa (L.A. Reeve, 1847) - (CHAETOPLEURIDAE)
- pertusa, Anachis pertusa L.A. Reeve, 1859 - syn of: Anachis lentiginosa (R.B. Hinds, 1844) - (COLUMBELLIDAE)
- pertusa, Columbella pertusa L.A. Reeve, 1859 - syn of: Anachis lentiginosa (R.B. Hinds, 1844) - (COLUMBELLIDAE)
- pertusa, Arinia pertusa J.J. Vermeulen, 1996 - (DIPLOMMATINIDAE)
- pertusa, Opalia pertusa P. Nyst, 1868 † - (EPITONIIDAE) (FOSSIL)
- pertusa, Glycymeris pertusa (L.A. Reeve, 1843) - (GLYCYMERIDIDAE)
- pertusa, Haliotis pertusa L.A. Reeve, 1846 - syn of: Haliotis rugosa J.B.P.A. Lamarck, 1822 - (HALIOTIDAE)
- pertusa, Lacuna pertusa T.A. Conrad, 1831 - syn of: Lacuna vincta (G. Montagu, 1803) - (LITTORINIDAE)
- pertusa, Mitra pertusa W.J. Swainson, 1822 - syn of: Mitra cardinalis (J.F. Gmelin, 1791) - (MITRIDAE)
- pertusa, Natica pertusa F. Stoliczka in Laube, 1867 † - syn of: Globularia pertusa (F. Stoliczka in Laube, 1867 †) - (NATICIDAE) (FOSSIL)
- pertusa, Donaldospira pertusa (de Koninck, 1883 †) - (ORTHONEMIDAE) (FOSSIL)
- pertusa, Terebra pertusa (I. von Born, 1778) - (TEREBRIDAE)
- pertusa, Terebra pertusa G.B. Sowerby, 1839 - syn of: Myurella affinis (J.E. Gray, 1834) - (TEREBRIDAE)
- pertusa milely, Terebra pertusa milely L. Bozzetti, 2001 - (TEREBRIDAE)
- Pertusiconcha, Genus Pertusiconcha S.D. Chistikov, 1982 (ENTALINIDAE)
- pertusum, Buccinum pertusum I. von Born, 1778 - syn of: Terebra pertusa (I. von Born, 1778) - (BUCCINIDAE)
- pertusus, Chaetopleura pertusus L.A. Reeve, 1847 - syn of: Chaetopleura pertusa (L.A. Reeve, 1847) - (CHAETOPLEURIDAE)
- pertusus, Rhizoconus pertusus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- pertusus, Opisthoporus pertusus (P.M.A. Morelet, 1861) - (CYCLOPHORIDAE)
- pertusus, Volutilithes pertusus W.J. Swainson, 1831 † - (VOLUTIDAE) (FOSSIL)
- pertusus elodieallaryae, Rhizoconus pertusus elodieallaryae T. Cossignani, 2013 - (CONIDAE)
- peruana, Aphera peruana R.N. Nelson, 1870 † - (CANCELLARIIDAE) (FOSSIL)
- peruana, Cassianella peruana Korner, 1937 † - (CASSIANELLIDAE) (FOSSIL)
- peruana, Peruinia peruana (F.H. Troschel, 1847) - (CLAUSILIIDAE)
- peruana bradina, Peruinia peruana bradina H.A. Pilsbry, 1945 - (CLAUSILIIDAE)
- peruana erythrostoma, Peruinia peruana erythrostoma H. Nordsieck, 2010 - (CLAUSILIIDAE)
- peruana flachi, Peruinia peruana flachi O. Böttger, 1889 - syn of: Peruinia flachi (O. Böttger, 1889) - (CLAUSILIIDAE)
- peruana granulosa, Peruinia peruana granulosa (E.R. Sykes, 1900) - (CLAUSILIIDAE)
- peruana rosenbergi, Peruinia peruana rosenbergi (H.B. Preston, 1907) - (CLAUSILIIDAE)
- peruana superba, Peruinia peruana superba W.K. Weyrauch, 1960 - syn of: Peruinia flachi superba W.K. Weyrauch, 1960 - (CLAUSILIIDAE)
- peruana tingamariae, Peruinia peruana tingamariae H.A. Pilsbry, 1922 - syn of: Peruinia flachi tingamariae (H.A. Pilsbry, 1922) - (CLAUSILIIDAE)
- peruanum, Huncalotis peruanum (Rivera, 1951) † - (PECTINIDA (unassigned)) (FOSSIL)
- peruanus, Tagelus peruanus (R.W. Dunker, 1862) - (SOLECURTIDAE)
- Peruarca, Genus Peruarca Olsson, 1944 † (GLYCYMERIDIDAE) (FOSSIL)
- Perucardia, Genus Perucardia Olsson, 1944 † (CARDIIDAE) (FOSSIL)
- Perucerithium, Subgenus Cerithium (Perucerithium) Olsson, 1929 † (CERITHIIDAE) (FOSSIL)
- Peruchilus, Genus Peruchilus Olsson, 1931 † (APORRHAIDAE) (FOSSIL)
- peruense, Aperostoma peruense C. de la Torre, P. Bartsch & J.P.E. Morrison, 1942 - (NEOCYCLOTIDAE)
- peruensis, Thais peruensis W.H. Dall, 1909 - syn of: Stramonita biserialis (H.M.D. de Blainville, 1832) - (MURICIDAE)
- Peruficus, syn of: Genus Glyptostyla Dall, 1892 † (FASCIOLARIIDAE) (FOSSIL)
- Peruinia, Genus Peruinia W. Polinski, 1922 (CLAUSILIIDAE)
- perula, Euvola perula (A.A. Olsson, 1961) - (PECTINIDAE)
- perulae, Thracidentula perulae T.A. Garrard, 1961 - syn of: Thracidentula anatinoides (L.A. Reeve, 1859) - (THRACIIDAE)
- Perulithes, syn of: Genus Clavilithes Swainson, 1840 † (FASCIOLARIIDAE) (FOSSIL)
- Peruluta, Genus Peruluta Olsson, 1928 † (VOLUTIDAE) (FOSSIL)
- perumbonata, Phestia perumbonata (White, 1880 †) - (NUCULANIDAE) (FOSSIL)
- perumbonata, Nucula perumbonata White, 1880 † - syn of: Phestia perumbonata (White, 1880 †) - (NUCULIDAE) (FOSSIL)
- Perumytilus, Genus Perumytilus A.A. Olsson, 1961 (MYTILIDAE)
- Perunassa, Genus Perunassa A.A. Olsson, 1932 † (BUCCINIDAE) (FOSSIL)
- Perunautilus, Genus Perunautilus Crick & Sobolev, 1994 † (LIROCERATIDAE) (FOSSIL)
- Perunela, Genus Perunela Frýda & Bandel, 1997 † (PERUNELIDAE) (FOSSIL)
- PERUNELIDAE Frýda & Bandel, 1997 † - Family (GASTROPODA-CAENOGASTROPODA) (FOSSIL)
- PERUNELLIDAE - syn of Family: PERUNELIDAE (FOSSIL)
- perunicola, Rhombopteria perunicola Kríž, 2008 † - (RHOMBOPTERIIDAE) (FOSSIL)
- Peruniscus, Genus Peruniscus Horný, 1962 † (TROPIDODISCIDAE) (FOSSIL)
- perusta, Ampullina perusta J.L.M. Defrance, 1823 † - (AMPULLINIDAE) (FOSSIL)
- Perustrombus, Genus Perustrombus Olsson, 1944 † (PUGNELLIDAE) (FOSSIL)
- peruviana, Acanthochitona hirudiniformis peruviana E.H.J. Leloup, 1941 - (ACANTHOCHITONIDAE)
- peruviana, Acteonina peruviana F. Haas, 1953 † - (ACTEONINIDAE) (FOSSIL)
- peruviana, Anatoma peruviana (D.L. Geiger & J.H. McLean, 2010) - (ANATOMIDAE)
- peruviana, Anomia peruviana A.V.M.D. D'Orbigny, 1846 - (ANOMIIDAE)
- peruviana, Carolia peruviana A.A. Olsson, 1928 † - (ANOMIIDAE) (FOSSIL)
- peruviana, Roudairia peruviana A.A. Olsson, 1934 † - (ARCTICIDAE) (FOSSIL)
- peruviana, Aturia peruviana A.A. Olsson, 1928 † - (ATURIIDAE) (FOSSIL)
- peruviana, Borsonia peruviana A.A. Olsson, 1931 † - (BORSONIIDAE) (FOSSIL)
- peruviana, Moniliopsis peruviana A.A. Olsson, 1930 † - (BORSONIIDAE) (FOSSIL)
- peruviana, Genota peruviana A.A. Olsson, 1930 † - (BORSONIIDAE) (FOSSIL)
- peruviana, Metula peruviana A.A. Olsson, 1931 † - (BUCCINIDAE) (FOSSIL)
- peruviana, Crepipatella peruviana (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- peruviana, Crepidula peruviana J.B.P.A. Lamarck, 1822 - syn of: Crepipatella peruviana (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- peruviana, Sydaphera peruviana A.M. Strong, 1954 - syn of: Sydaphera undulata (G.B. II Sowerby, 1849) - (CANCELLARIIDAE)
- peruviana, Septocardia peruviana L.R. Cox, 1949 † - (CARDIIDAE) (FOSSIL)
- peruviana, Venericor peruviana (A.A. Olsson, 1928 †) - (CARDITIDAE) (FOSSIL)
- peruviana, Cerithiopsis peruviana (A.V.M.D. D'Orbigny, 1840) - (CERITHIOPSIDAE)
- peruviana, Chaetopleura peruviana (J.B.P.A. Lamarck, 1819) - (CHAETOPLEURIDAE)
- peruviana, Parabalea peruviana (L. Pfeiffer, 1867) - (CLAUSILIIDAE)
- peruviana, Anachis pardalis peruviana W.K. Weyrauch - (COLUMBELLIDAE)
- peruviana, Conactaeon peruviana F. Haas, 1953 † - (CYLINDROBULLINIDAE) (FOSSIL)
- peruviana, Cyrena peruviana G.P. Deshayes, 1855 - syn of: Polymesoda inflata (R.A. Philippi, 1851) - (CYRENIDAE)
- peruviana, Baptodoris peruviana (A.V.M.D. D'Orbigny, 1837) - (DISCODORIDIDAE)
- peruviana, Platydoris peruviana D'Orbigny, 1837 - syn of: Baptodoris peruviana (A.V.M.D. D'Orbigny, 1837) - (DISCODORIDIDAE)
- peruviana, Doris peruviana D'Orbigny, 1837 - syn of: Baptodoris peruviana (A.V.M.D. D'Orbigny, 1837) - (DORIDIDAE)
- peruviana, Amphiscapha peruviana Chronic, 1949 † - (EUOMPHALIDAE) (FOSSIL)
- peruviana, Lucapinella peruviana W.K. Weyrauch, 1970 - (FISSURELLIDAE)
- peruviana, Fissurella peruviana J.B.P.A. Lamarck, 1822 - (FISSURELLIDAE)
- peruviana, Gadila peruviana (W.H. Dall, 1908) - (GADILIDAE)
- peruviana, Galeommella peruviana (A.A. Olsson, 1961) - (GALEOMMATIDAE)
- peruviana, Solecardia peruviana A.A. Olsson, 1961 - syn of: Galeommella peruviana (A.A. Olsson, 1961) - (GALEOMMATIDAE)
- peruviana, Haminoea peruviana (A.V.M.D. D'Orbigny, 1842) - (HAMINOEIDAE)
- peruviana, Helicina peruviana P.M.A. Morelet, 1863 - (HELICINIDAE)
- peruviana, Hercoglossa peruviana S.S. Berry, 1923 † - (HERCOGLOSSIDAE) (FOSSIL)
- peruviana, Icanotia peruviana A.A. Olsson, 1934 † - (ICANOTIIDAE) (FOSSIL)
- peruviana, Pleurophopsis peruviana A.A. Olsson, 1931 † - (KELLIELLIDAE) (FOSSIL)
- peruviana, Ladinula peruviana K. Bandel, 1994 † - (LADINULIDAE) (FOSSIL)
- peruviana, Aligena peruviana (A.A. Olsson, 1961) - (LASAEIDAE)
- peruviana, Orobitella peruviana A.A. Olsson, 1961 - syn of: Aligena peruviana (A.A. Olsson, 1961) - (LASAEIDAE)
- peruviana, Capillimya peruviana Cox, 1956 † - (LATERNULIDAE) (FOSSIL)
- peruviana, Echinolittorina peruviana (J.B.P.A. Lamarck, 1822) - (LITTORINIDAE)
- peruviana, Austrolittorina peruviana J.B.P.A. Lamarck, 1822 - syn of: Echinolittorina peruviana (J.B.P.A. Lamarck, 1822) - (LITTORINIDAE)
- peruviana, Littorina peruviana J.B.P.A. Lamarck, 1822 - syn of: Echinolittorina peruviana (J.B.P.A. Lamarck, 1822) - (LITTORINIDAE)
- peruviana, Nodilittorina peruviana J.B.P.A. Lamarck, 1822 - syn of: Echinolittorina peruviana (J.B.P.A. Lamarck, 1822) - (LITTORINIDAE)
- peruviana, Ctena peruviana A.A. Olsson, 1931 † - (LUCINIDAE) (FOSSIL)
- peruviana, Malletia peruviana W.H. Dall, 1908 - (MALLETIIDAE)
- peruviana, Anticlinura peruviana (W.H. Dall, 1908) - (MANGELIIDAE)
- peruviana, Tuba peruviana A.A. Olsson, 1930 † - (MATHILDIDAE) (FOSSIL)
- peruviana, Pyrula peruviana E.M. Spieker, 1922 † - (MELONGENIDAE) (FOSSIL)
- peruviana, Strigatella peruviana A.A. Olsson, 1931 † - (MITRIDAE) (FOSSIL)
- peruviana, Concholepas peruviana J.B.P.A. Lamarck, 1801 - syn of: Concholepas concholepas (J.G. Bruguière, 1789) - (MURICIDAE)
- peruviana, Purpura peruviana J.F.T. Eydoux & L.F.A. Souleyet, 1852 - syn of: Stramonita biserialis (H.M.D. de Blainville, 1832) - (MURICIDAE)
- peruviana, Concholepas peruviana J.B.P.A. Lamarck, 1801 - syn of: Concholepas concholepas (J.G. Bruguière, 1789) - (MURICIDAE)
- peruviana, Lithophaga peruviana (A.V.M.D. D'Orbigny, 1846) - (MYTILIDAE)
- peruviana, Natica peruviana A.A. Olsson, 1928 † - (NATICIDAE) (FOSSIL)
- peruviana, Nerita peruviana R.A. Philippi, 1844 - syn of: Nerita yoldii C.A. Récluz, 1841 - (NERITIDAE)
- peruviana, Saccella peruviana (W.H. Dall, 1895) - (NUCULANIDAE)
- peruviana, Agaronia peruviana Woods in Bosworth, 1922 † - (OLIVIDAE) (FOSSIL)
- peruviana, Oliva peruviana J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- peruviana, Palaeocardita peruviana Cox, 1949 † - (PALAEOCARDITIDAE) (FOSSIL)
- peruviana, Phasianella peruviana J.B.P.A. Lamarck, 1822 - syn of: Echinolittorina peruviana (J.B.P.A. Lamarck, 1822) - (PHASIANELLIDAE)
- peruviana, Psadara monile peruviana (F. Haas, 1951) - (PLEURODONTIDAE)
- peruviana, Harrisianella peruviana A.A. Olsson, 1929 † - (POTAMIDIDAE) (FOSSIL)
- peruviana, Pteria peruviana L.A. Reeve, 1857 - syn of: Pteria sterna (A.A. Gould, 1851) - (PTERIIDAE)
- peruviana, Avicula peruviana L.A. Reeve, 1857 - syn of: Pteria sterna (A.A. Gould, 1851) - (PTERIIDAE)
- peruviana, Rimella peruviana A.A. Olsson, 1931 † - (RIMELLIDAE) (FOSSIL)
- peruviana, Rissoella peruviana W.F. Ponder & H.W. Worsfold, 1994 - (RISSOELLIDAE)
- peruviana, Wayampia peruviana (H.B. Preston, 1907) - (SCOLODONTIDAE)
- peruviana, Kittliconcha peruviana F. Haas, 1953 † - (SETTSASSIIDAE) (FOSSIL)
- peruviana, Succinea peruviana W.J. Broderip, 1833 - (SUCCINEIDAE)
- peruviana, Terebra peruviana A. Peñas, 1970 - (TEREBRIDAE)
- peruviana, Thyasira peruviana A.A. Olsson, 1931 † - (THYASIRIDAE) (FOSSIL)
- peruviana, Guidonia peruviana F. Haas, 1953 † - (TROCHONEMATIDAE) (FOSSIL)
- peruviana, Amblema peruviana J.B.P.A. Lamarck, 1819 - syn of: Amblema plicata (T. Say, 1817) - (UNIONIDAE)
- peruviana, Macromphalina peruviana (H.A. Pilsbry & A.A. Olsson, 1945) - (VANIKORIDAE)
- peruviana, Grateloupia peruviana A.A. Olsson, 1928 † - (VENERIDAE) (FOSSIL)
- peruviana, Egesta peruviana A.A. Olsson, 1928 † - (VENERIDAE) (FOSSIL)
- peruviana, Lirophora peruviana (G.B. I Sowerby, 1835) - (VENERIDAE)
- peruviana, Petricola peruviana A.A. Olsson, 1961 - syn of: Petricola olssoni F.R. Bernard, 1983 - (VENERIDAE)
- peruviana, Venerupis peruviana J.C. Jay, 1839 - syn of: Petricola denticulata G.B. I Sowerby, 1834 - (VENERIDAE)
- peruviana, Heterovaginina peruviana (O. Kraus, 1953) - (VERONICELLIDAE)
- peruviana, Bothriopupa peruviana H.A. Pilsbry, 1934 - (VERTIGINIDAE)
- peruviana, Lyria peruviana A.A. Olsson, 1931 † - (VOLUTIDAE) (FOSSIL)
- peruviana, Peruluta peruviana (J.H.F. Douvillé, 1921 †) - (VOLUTIDAE) (FOSSIL)
- peruviana, Volutospina peruviana J.H.F. Douvillé, 1921 † - syn of: Peruluta peruviana (J.H.F. Douvillé, 1921 †) - (VOLUTIDAE) (FOSSIL)
- peruviana castanea, Oliva peruviana castanea J. Ford in C.W. Johnson, 1911 - (OLIVIDAE)
- peruviana coniformis, Oliva peruviana coniformis R.A. Philippi, 1848 - (OLIVIDAE)
- peruviana fulgorata, Oliva peruviana fulgorata E.C. Von Martens, 1869 - (OLIVIDAE)
- peruviana fulgurata, Oliva peruviana fulgurata E.C. Von Martens, 1869 - syn of: Oliva peruviana fulgorata E.C. Von Martens, 1869 - (OLIVIDAE)
- peruviana gabbi, Anomia peruviana gabbi H.A. Pilsbry & Johnson, 1917 - (ANOMIIDAE)
- peruviana livida, Oliva peruviana livida C.W. Johnson, 1911 - (OLIVIDAE)
- peruviana occidens, Fissurella peruviana occidens A.A. Gould, 1846 - (FISSURELLIDAE)
- peruviana rhadina, Parabalea peruviana rhadina H.A. Pilsbry, 1949 - (CLAUSILIIDAE)
- peruviana subcastanea, Oliva peruviana subcastanea E.G. Vanatta, 1915 - (OLIVIDAE)
- peruviana vadi, Oliva peruviana vadi E.G. Vanatta, 1915 - syn of: Oliva peruviana J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- peruvianum, Oxytropidoceras peruvianum (von Buch, 1839 †) - (BRANCOCERATIDAE) (FOSSIL)
- peruvianum, Bittium peruvianum (A.V.M.D. D'Orbigny, 1841) - (CERITHIIDAE)
- peruvianum, Fissidentalium peruvianum (W.H. Dall, 1908) - (DENTALIIDAE)
- peruvianum, Dentalium peruvianum W.H. Dall, 1908 - syn of: Fissidentalium peruvianum (W.H. Dall, 1908) - (DENTALIIDAE)
- peruvianum, Adelopoma peruvianum B. Hausdorf & Guevara Muñoz, 2004 - (DIPLOMMATINIDAE)
- peruvianum, Epitonium peruvianum A.A. Olsson, 1928 † - (EPITONIIDAE) (FOSSIL)
- peruvianum, Oniscidia peruvianum A.A. Olsson, 1931 † - (HARPIDAE) (FOSSIL)
- peruvianum, Helisoma peruvianum (W.J. Broderip, 1832) - (PLANORBIDAE)
- peruvianum, Rhynchocerithium peruvianum K. Bandel, 1994 † - (PROCERITHIIDAE) (FOSSIL)
- peruvianum, Prolyelliceras peruvianum Spath, 1930 † - (PROLYELLICERATIDAE) (FOSSIL)
- peruvianum, Pseudoparalegoceras peruvianum (S.S. Berry, 1928 †) - (PSEUDOPARALEGOCERATIDAE) (FOSSIL)
- peruvianum, Peripleurites peruvianum Wiedmann, 1973 † - syn of: Peripleurites roemeri Mojsisovics, 1893 † - (RHABDOCERATIDAE) (FOSSIL)
- peruvianus, Ammonites peruvianus von Buch, 1839 † - syn of: Oxytropidoceras peruvianum (von Buch, 1839 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- peruvianus, Plectostylus peruvianus (J.G. Bruguière, 1789) - (BOTHRIEMBRYONTIDAE)
- peruvianus, Bayerius peruvianus A. Warén & P. Bouchet, 2001 - (BUCCINIDAE)
- peruvianus, Bulimulus peruvianus (J.G. Bruguière, 1792) - (BULIMULIDAE)
- peruvianus, Bostryx peruvianus H.A. Pilsbry, 1944 - (BULIMULIDAE)
- peruvianus, Pustulifer peruvianus F. Haas, 1953 † - (COELOSTYLINIDAE) (FOSSIL)
- peruvianus, Conus peruvianus A.A. Olsson, 1930 † - (CONIDAE) (FOSSIL)
- peruvianus, Colpomphalus peruvianus (F. Haas, 1953 †) - (DISCOHELICIDAE) (FOSSIL)
- peruvianus, Donax peruvianus G.P. Deshayes, 1855 - syn of: Chion obesulus L.A. Reeve, 1854 - (DONACIDAE)
- peruvianus, Phymatifer peruvianus F. Haas, 1953 † - syn of: Colpomphalus peruvianus (F. Haas, 1953 †) - (EUOMPHALIDAE) (FOSSIL)
- peruvianus, Cadulus peruvianus W.H. Dall, 1908 - syn of: Gadila peruviana (W.H. Dall, 1908) - (GADILIDAE)
- peruvianus, Glycymeris peruvianus A.A. Olsson, 1930 † - (GLYCYMERIDIDAE) (FOSSIL)
- peruvianus, Radiodiscus peruvianus A.J. Crawford, 1939 - (HELICODISCIDAE)
- peruvianus, Leptochiton peruvianus B.I. Sirenko, 2015 - (LEPTOCHITONIDAE)
- peruvianus, Macrocyclis peruvianus (J.B.P.A. Lamarck, 1822) - (MACROCYCLIDAE)
- peruvianus, Murex peruvianus J.B.P.A. Lamarck, 1816 - syn of: Trophon geversianum (P.S. Pallas, 1774) - (MURICIDAE)
- peruvianus, Murex peruvianus G.B. II Sowerby, 1841 - syn of: Murexsul octogonus (J.R.C. Quoy & J.P. Gaimard, 1833) - (MURICIDAE)
- peruvianus, Aperostoma peruvianus (S.I. Da Costa, 1906) - (NEOCYCLOTIDAE)
- peruvianus, Oncochilus peruvianus F. Haas, 1953 † - (NERITARIIDAE) (FOSSIL)
- peruvianus, Mexinauta peruvianus (J.E. Gray, 1828) - (PHYSIDAE)
- peruvianus, Stenopronorites peruvianus (A. Thomas, 1928 †) - (PRONORITIDAE) (FOSSIL)
- peruvianus, Torgnellus peruvianus Ollson, 1944 † - (PUGNELLIDAE) (FOSSIL)
- peruvianus, Pupoides albilabris peruvianus W.K. Weyrauch, 1960 - (PUPILLIDAE)
- peruvianus, Protofusus peruvianus F. Haas, 1953 † - (PURPURINIDAE) (FOSSIL)
- peruvianus, Sanguinolites peruvianus A. Thomas, 1928 † - (SANGUINOLITIDAE) (FOSSIL)
- peruvianus, Tagelus peruvianus H.A. Pilsbry & A.A. Olsson, 1941 - (SOLECURTIDAE)
- peruvianus, Spirostylus peruvianus F. Haas, 1953 † - syn of: Acteonina peruviana F. Haas, 1953 † - (SPIROSTYLIDAE) (FOSSIL)
- peruvianus, Lobatus peruvianus (W.J. Swainson, 1823) - (STROMBIDAE)
- peruvianus, Cyclostremiscus peruvianus H.A. Pilsbry & A.A. Olsson, 1945 - (TORNIDAE)
- peruvianus, Trimusculus peruvianus (G.B. II Sowerby, 1835) - (TRIMUSCULIDAE)
- peruvianus, Turbinella peruvianus A.A. Olsson, 1928 † - (TURBINELLIDAE) (FOSSIL)
- peruvianus, Unio peruvianus J.B.P.A. Lamarck, 1819 - syn of: Amblema plicata (T. Say, 1817) - (UNIONIDAE)
- Peruviella, Genus Peruviella Olsson , 1944 † (CEPHALASPIDA (unassigned)) (FOSSIL)
- Peruvispira, Genus Peruvispira Chronic , 1949 † (GOSSELETINIDAE) (FOSSIL)
- peruzzii, Gyraulus peruzzii (De Stefani, 1880) † - (PLANORBIDAE) (FOSSIL)
- pervaga, Odostomia pervaga C.R. Laws, 1939 - (PYRAMIDELLIDAE)
- pervalida, Myadora complexa pervalida B.C. Cotton, 1931 - (MYOCHAMIDAE)
- pervariabilis, Mesembrinus pervariabilis (L. Pfeiffer, 1853) - (BULIMULIDAE)
- pervariabilis, Amphidromus pervariabilis A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis, Vexillum pervariabilis P. Dautzenberg, 1935 - syn of: Vexillum vulpecula (C. Linnaeus, 1758) - (COSTELLARIIDAE)
- pervariabilis, Theodoxus doderleini pervariabilis (F. Sacco, 1896 †) - (NERITIDAE) (FOSSIL)
- pervariabilis bifasciata, Amphidromus pervariabilis bifasciata A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis gonostioma, Amphidromus pervariabilis gonostioma A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis lilacina, Amphidromus pervariabilis lilacina A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis minor, Amphidromus pervariabilis minor A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis monozonalis, Amphidromus pervariabilis monozonalis A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis obesa, Amphidromus pervariabilis obesa A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis protracta, Amphidromus pervariabilis protracta A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervariabilis tricolor, Amphidromus pervariabilis tricolor A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- pervarians, Spixia pervarians H. Hass, 1936 - (ODONTOSTOMIDAE)
- pervaricosa, Acirsella pervaricosa A. von Koenen, 1891 † - (EPITONIIDAE) (FOSSIL)
- pervegrandis, Balcis pervegrandis A.W.B. Powell, 1940 - syn of: Hypermastus bulbulus (R. Murdoch & H.H. Suter, 1906) - (EULIMIDAE)
- pervelata, Contradusta bregeriana pervelata (F.Jr. Lorenz, 2002) - (CYPRAEIDAE)
- perventricosa, Arca perventricosa T. Iredale, 1939 - (ARCIDAE)
- pervernicosa, Solemya pervernicosa (J.T. Kuroda, 1948) - (SOLEMYIDAE)
- pervernicosa, Petrasma pervernicosa (J.T. Kuroda, 1948) - syn of: Solemya pervernicosa (J.T. Kuroda, 1948) - (SOLEMYIDAE)
- pervernicosus, Babelomurex pervernicosus (M. Suzuki, 1972) - (MURICIDAE)
- perversa, Auriculella perversa C.M. Cooke, 1915 - (ACHATINELLIDAE)
- perversa, Amastra perversa A. Hyatt & H.A. Pilsbry, 1911 - (AMASTRIDAE)
- perversa, Balea perversa (C. Linnaeus, 1758) - (CLAUSILIIDAE)
- perversa, Clausilia perversa T. Pennant, 1774 - syn of: Clausilia rugosa (J.P.R. Draparnaud, 1801) - (CLAUSILIIDAE)
- perversa, Melanella perversa (K.J. Bush, 1909) - (EULIMIDAE)
- perversa, Sphenia perversa W.T. Blanford, 1867 - (MYIDAE)
- perversa, Onychochilus perversa Lindström, 1884 † - (ONYCHOCHILIDAE) (FOSSIL)
- perversa, Corona perversa (W.J. Swainson, 1820) - (ORTHALICIDAE)
- perversa, Ostrea perversa Cragin, 1893 † - (OSTREIDAE) (FOSSIL)
- perversa, Pleurotomaria perversa Whidborne, 1889 † - (PLEUROTOMARIIDAE) (FOSSIL)
- perversa, Antiplanes perversa (W.M. Gabb, 1865 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- perversa, Pseudozygopleura perversa Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- perversa, Alvania dorbignyi perversa F. Nordsieck, 1972 - (RISSOIDAE)
- perversa, Melania perversa Münster, 1841 † - syn of: Allostrophia perversa (Münster, 1841 †) - (THIARIDAE) (FOSSIL)
- perversa, Triphora perversa C. Linnaeus, 1758 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversa, Turris perversa (R.A. Philippi, 1846 †) - (TURRIDAE) (FOSSIL)
- perversa, Tylodina perversa (J.F. Gmelin, 1791) - (TYLODINIDAE)
- perversa, Verticordia perversa W.H. Dall, 1886 - (VERTICORDIIDAE)
- perversa, Allostrophia perversa (Münster, 1841 †) - (ZYGOPLEURIDAE) (FOSSIL)
- perversidens, Bathyarca perversidens C. Hedley, 1902 - (ARCIDAE)
- perversum, Architectonica perversum d'Orbigny, 1842 † - syn of: Euomphalus perversus d'Orbigny, 1842 † - (ARCHITECTONICIDAE) (FOSSIL)
- perversum, Busycon perversum (C. Linnaeus, 1758) - (BUSYCONIDAE)
- perversum, Cerithium perversum C. Linnaeus, 1758 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (CERITHIIDAE)
- perversum, Eurydesma perversum Reed, 1936 † - (EURYDESMATIDAE) (FOSSIL)
- perversum, Cyclonema perversum Lindström, 1884 † - syn of: Onychochilus perversa Lindström, 1884 † - (PLATYCERATIDAE) (FOSSIL)
- perversum laeostomum, Busycon perversum laeostomum B.W. Kent, 1982 - syn of: Busycon laeostomum B.W. Kent, 1982 - (BUSYCONIDAE)
- perversum okeechobeensis, Busycon perversum okeechobeensis E.J. Petuch, 1994 - (BUSYCONIDAE)
- perversum pulleyi, Busycon perversum pulleyi S.C. Hollister, 1958 - syn of: Busycon pulleyi S.C. Hollister, 1958 - (BUSYCONIDAE)
- perversurn, Phragmoceras perversurn Barrande, 1865 † - syn of: Inversoceras perversurn (Barrande, 1865 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- perversurn, Inversoceras perversurn (Barrande, 1865 †) - (TRIMEROCERATIDAE) (FOSSIL)
- perversurn falciforme, Inversoceras perversurn falciforme (Barrande, 1865 †) - (TRIMEROCERATIDAE) (FOSSIL)
- perversus, Prosipho perversus A.W.B. Powell, 1951 - syn of: Antistreptus contrarius (K.H.J. Thiele, 1912) - (BUCCINIDAE)
- perversus, Mesembrinus semimaculatus perversus H.A. Pilsbry, 1926 - (BULIMULIDAE)
- perversus, Amphidromus perversus (C. Linnaeus, 1758) - (CAMAENIDAE)
- perversus, Euomphalus perversus d'Orbigny, 1842 † - (EUOMPHALIDAE) (FOSSIL)
- perversus, Fusus perversus L.C. Kiener, 1840 - syn of: Neptunea contraria (C. Linnaeus, 1771) - (FASCIOLARIIDAE)
- perversus, Murex perversus C. Linnaeus, 1758 - syn of: Busycon perversum (C. Linnaeus, 1758) - (MURICIDAE)
- perversus, Velates perversus (J.F. Gmelin, 1791 †) - (NERITIDAE) (FOSSIL)
- perversus, Antiplanes perversus W.M. Gabb, 1865 - syn of: Antiplanes catalinae (W.J. Raymond, 1904) - (PSEUDOMELATOMIDAE)
- perversus, Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus, Trochus perversus C. Linnaeus, 1758 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TROCHIDAE)
- perversus aureus, Amphidromus perversus aureus (T. Martyn, 1784) - (CAMAENIDAE)
- perversus bicolor, Triphora perversus bicolor M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus borneensis, Amphidromus perversus borneensis H.A. Pilsbry, 1900 - (CAMAENIDAE)
- perversus butoti, Amphidromus perversus butoti (F.F. Laidlaw & G.A. Solem, 1961) - (CAMAENIDAE)
- perversus butoti infraviridis, Amphidromus perversus butoti infraviridis E.C. Von Martens, 1867 - (CAMAENIDAE)
- perversus butoti stevensoni, Amphidromus perversus butoti stevensoni (J. Abbas & P. Krull, 2007) - (CAMAENIDAE)
- perversus chloris, Amphidromus perversus chloris L.A. Reeve, 1848 - syn of: Amphidromus chloris (L.A. Reeve, 1848) - (CAMAENIDAE)
- perversus cincta, Triphora perversus cincta M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Marshallora adversa (G. Montagu, 1803) - (TRIPHORIDAE)
- perversus citrinus, Amphidromus perversus citrinus (E.C. Von Martens, 1867) - (CAMAENIDAE)
- perversus cylindrata, Triphora perversus cylindrata T.A. de M. Monterosato, 1878 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus diminuta, Triphora perversus diminuta P.M. Pallary, 1920 - syn of: Marshallora adversa (G. Montagu, 1803) - (TRIPHORIDAE)
- perversus elongata, Triphora perversus elongata P.M. Pallary, 1906 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus emaciatus, Amphidromus perversus emaciatus E.C. Von Martens, 1867 - (CAMAENIDAE)
- perversus gracilis, Triphora perversus gracilis P. Dautzenberg, 1895 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus hordacea, Triphora perversus hordacea T.A. de M. Monterosato, 1889 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (TRIPHORIDAE)
- perversus interruptus, Amphidromus perversus interruptus (O.F. Müller, 1774) - (CAMAENIDAE)
- perversus kadatauensis, Amphidromus perversus kadatauensis J. Abbas & P. Krull, 2006 - (CAMAENIDAE)
- perversus lactea, Triphora perversus lactea M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Marshallora adversa (G. Montagu, 1803) - (TRIPHORIDAE)
- perversus melanoma, Amphidromus perversus melanoma L. Pfeiffer, 1852 - (CAMAENIDAE)
- perversus mitra, Amphidromus perversus mitra (C. Linnaeus, 1758) - (CAMAENIDAE)
- perversus niveus, Amphidromus perversus niveus P.B. Sarasin & K.F. Sarasin, 1889 - (CAMAENIDAE)
- perversus obesula, Triphora perversus obesula M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Marshallora adversa (G. Montagu, 1803) - (TRIPHORIDAE)
- perversus rufocinctus, Amphidromus perversus rufocinctus H. Fruhstorfer, 1905 - (CAMAENIDAE)
- perversus sankapurus, Amphidromus perversus sankapurus H. Fruhstorfer, 1905 - (CAMAENIDAE)
- perversus solomni, Amphidromus perversus solomni J. Abbas & P. Krull, 2009 - (CAMAENIDAE)
- perversus strigosus, Amphidromus perversus strigosus J. Abbas & P. Krull, 2009 - (CAMAENIDAE)
- perversus sultanus, Amphidromus perversus sultanus (C. Linnaeus, 1758) - (CAMAENIDAE)
- perversus taloensis, Amphidromus perversus taloensis B. Dharma, 2007 - (CAMAENIDAE)
- pervertens, Onychochilus pervertens (J. Perner, 1903 †) - (ONYCHOCHILIDAE) (FOSSIL)
- pervertens, Cyclonema pervertens J. Perner, 1903 † - syn of: Onychochilus pervertens (J. Perner, 1903 †) - (PLATYCERATIDAE) (FOSSIL)
- Pervertina, Genus Pervertina Horný, 1964 † (ONYCHOCHILIDAE) (FOSSIL)
- perveta, Drepanocheilus perveta Stanton, 1920 † - (APORRHAIDAE) (FOSSIL)
- pervetusta, Euconia pervetusta (T.A. Conrad, 1838 †) - (SINUOPEIDAE) (FOSSIL)
- pervia, Rangimata pervia J. Marwick, 1928 † - (COLLONIIDAE) (FOSSIL)
- pervia, Lymnaea pervia E.C. Von Martens, 1867 - (LYMNAEIDAE)
- pervia, Retusa pervia (W.H. Dall, 1889) - (RETUSIDAE)
- perviabilis, Mesembrinus perviabilis L. Pfeiffer, 1853 - syn of: Mesembrinus pervariabilis (L. Pfeiffer, 1853) - (BULIMULIDAE)
- Pervicacia, syn of: Genus Duplicaria W.H. Dall, 1908 (TEREBRIDAE)
- PERVICACIIDAE - syn of Family: TEREBRIDAE
- pervicax, Cerithium pervicax J.C. Melvill, 1904 - syn of: Argyropeza verecunda (J.C. Melvill & R. Standen, 1903) - (CERITHIIDAE)
- pervicax, Globostomia pervicax L. Hoffman, B. van Heugten & M.S.S. Lavaleye, 2009 - (PYRAMIDELLIDAE)
- pervicina, Chloritis pervicina E.A. Smith, 1897 - (CAMAENIDAE)
- pervicina, Odostomia pervicina A.E.M. Cossmann, 1903 † - (PYRAMIDELLIDAE) (FOSSIL)
- pervicinum, Bittium pervicinum A.E.M. Cossmann & G. Pissarro † - (CERITHIIDAE) (FOSSIL)
- pervigo, Nihonia pervigo (Yokoyama, 1928 †) - (COCHLESPIRIDAE) (FOSSIL)
- pervinquierei, Flickia pervinquierei Pervinquiere 1907 † - (FLICKIIDAE) (FOSSIL)
- pervinquieri, Fagesia pervinquieri Böse, 1920 † - (VASCOCERATIDAE) (FOSSIL)
- Pervinquieria, syn of: Genus Mortoniceras Adkins, 1920 † (BRANCOCERATIDAE) (FOSSIL)
- perviridis, Chiton perviridis (P.P. Carpenter, 1865) - (CHITONIDAE)
- perviridis, Rhyssoplax perviridis P.P. Carpenter, 1865 - syn of: Chiton perviridis (P.P. Carpenter, 1865) - (CHITONIDAE)
- perviridis, Mytilopsis perviridis H.S. Holten, 1802 - syn of: Mytilopsis adamsi J.P.E. Morrison, 1946 - (DREISSENIDAE)
- perviridis, Mytilus perviridis H.S. Holten, 1802 - syn of: Mytilopsis adamsi J.P.E. Morrison, 1946 - (MYTILIDAE)
- perviridis, Pinctada perviridis L.A. Reeve, 1857 - syn of: Pinctada imbricata perviridis (L.A. Reeve, 1857) - (PTERIIDAE)
- perviridis, Pinctada imbricata perviridis (L.A. Reeve, 1857) - (PTERIIDAE)
- pervis, Helicacanthus pervis Pan, 1977 † - (PLEUROCERIIDAE) (FOSSIL)
- Pervisinum, syn of: Genus Eunaticina P. Fischer, 1885 (NATICIDAE)
- pervius, Bulimulus pervius (L. Pfeiffer, 1853) - (BULIMULIDAE)
- pervius, Spiromphalus pervius Hoare, 1980 † - (ORTHONEMIDAE) (FOSSIL)
- pervoluta, Tremanotus pervoluta (McChesney, 1861 †) - (BUCANIIDAE) (FOSSIL)
- pervoluta, Sinuites pervoluta Ulrich & Scofield, 1897 † - (SINUITIDAE) (FOSSIL)
- pervulgata, Barleeia pervulgata S. Gofas, 1995 - (BARLEEIIDAE)
- pervulgata, Syrnola pervulgata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
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