- riocanensis, Cunearca riocanensis C.J. Maury, 1917 † - (ARCIDAE) (FOSSIL)
- riocanensis, Armimiltha riocanensis (C.J. Maury, 1917 †) - (LUCINIDAE) (FOSSIL)
- riocanensis, Tellina riocanensis C.J. Maury, 1917 † - (TELLINIDAE) (FOSSIL)
- riocanensis, Petricola riocanensis C.J. Maury, 1917 - syn of: Choristodon robustus (Sowerby, 1834) - (VENERIDAE)
- riocanensis, Petricola riocanensis C.J. Maury, 1917 - syn of: Choristodon robustus (Sowerby, 1834) - (VENERIDAE)
- Rioceras, Genus Rioceras Flower, 1964 (RIOCERATIDAE) (FOSSIL)
- RIOCERATIDAE Krφger & Evans, 2011 - Family (CEPHALOPODA-NAUTILOIDEA-ELLESMEROCERIDA) (FOSSIL)
- riochcoensis, Radioconus riochcoensis A.J. Crawford, 1939 - (HELICODISCIDAE)
- rioensis, Spathites rioensis Powell, 1963 † - (ACANTHOCERATIDAE) (FOSSIL)
- rioensis, Calliostoma rioensis W.H. Dall, 1890 - (CALLIOSTOMATIDAE)
- rioensis, Drillia rioensis E.A. Smith, 1915 - syn of: Brachytoma rioensis (E.A. Smith, 1915) - (DRILLIIDAE)
- rioensis, Brachytoma rioensis (E.A. Smith, 1915) - (PSEUDOMELATOMIDAE)
- rioensis, Lioglyphostoma rioensis E.A. Smith, 1915 - syn of: Brachytoma rioensis (E.A. Smith, 1915) - (PSEUDOMELATOMIDAE)
- riogramamense, Cardium riogramamense C.J. Maury, 1930 † - (CARDIIDAE) (FOSSIL)
- riogramamense, Canadoceras riogramamense C.J. Maury, 1930 † - (PACHYDISCIDAE) (FOSSIL)
- riograndense, Metastoma riograndense H.A. Pilsbry, 1946 - syn of: Holospira riograndensis H.A. Pilsbry, 1946 - (UROCOPTIDAE)
- riograndensis, Cochliopina riograndensis (H.A. Pilsbry & J.H. Ferriss, 1906) - (COCHLIOPIDAE)
- riograndensis, Crassatella riograndensis E.H. Vokes, 1973 - (CRASSATELLIDAE)
- riograndensis, Anodonta riograndensis H.F.A. von Ihering, 1890 - syn of: Anodontites trapesialis (J.B.P.A. Lamarck, 1818) - (UNIONIDAE)
- riograndensis, Holospira riograndensis H.A. Pilsbry, 1946 - (UROCOPTIDAE)
- riograndensis, Gastrocopta riograndensis H.A. Pilsbry, 1916 - (VERTIGINIDAE)
- riograndensis, Yoldiella riograndensis (C. Esteves, 1984) - (YOLDIIDAE)
- riogurabonica, Anadara riogurabonica C.J. Maury, 1917 † - (ARCIDAE) (FOSSIL)
- riogurabonis, Drillia riogurabonis C.J. Maury, 1917 † - (DRILLIIDAE) (FOSSIL)
- riogurabonis eurystoma, Drillia riogurabonis eurystoma Gardner, 1937 - (DRILLIIDAE)
- riohondensis, Chondrothyrella ottonis riohondensis C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- riojana, Redonia riojana T.M. Sánchez, 1997 † - (REDONIIDAE) (FOSSIL)
- riojanus, Odontostomus riojanus A. Doering, 1875 - (ODONTOSTOMIDAE)
- rioliense, Cochlostoma roseoli rioliense (A.J. Wagner, 1914) - (COCHLOSTOMATIDAE)
- riomaensis, Acteon riomaensis C.J. Maury, 1917 - syn of: Japonactaeon punctostriata (Adams, 1840) - (ACTEONIDAE)
- riomaonis, Surcula riomaonis C.J. Maury, 1917 † - (CLAVATULIDAE) (FOSSIL)
- riomaturensis, Lirophora riomaturensis (C.J. Maury, 1925) - (VENERIDAE)
- rionegrensis, Hercoglossa rionegrensis Reichler, 1995 † - (HERCOGLOSSIDAE) (FOSSIL)
- rionegrina, Heleobia rionegrina (J.M. Gaillard, 1974) - (COCHLIOPIDAE)
- riopejensis, Gemma beatrix riopejensis I. Richling, 2004 - (VENERIDAE)
- riopirabica, Psammacoma riopirabica C.J. Maury, 1924 † - (TELLINIDAE) (FOSSIL)
- rioplatensis, Anodon rioplatensis G.B. Sowerby, 1870 - syn of: Anodontites trapesialis (J.B.P.A. Lamarck, 1818) - (UNIONIDAE)
- riopretensis, Megalobulimus riopretensis L.R.L. Simone & J.L.M. Leme, 1998 - (MEGALOBULIMIDAE)
- Riosatella, Subgenus Crassatella (Riosatella) E.H. Vokes, 1973 (CRASSATELLIDAE)
- riosecana, Turbinella riosecana F. Hodson, 1931 † - syn of: Turbinella trinitatis C.J. Maury, 1925 † - (TURBINELLIDAE) (FOSSIL)
- Rioselleolis, syn of: Genus Babakina R.A. Roller, 1973 (FLABELLINIDAE)
- riosi, Ketosia riosi F.N. Dos Santos & R.S. Absalão, 2006 - (BARLEEIIDAE)
- riosi, Conus riosi E.J. Petuch, 1986 - syn of: Dauciconus daucus riosi (E.J. Petuch, 1986) - (CONIDAE)
- riosi, Dauciconus daucus riosi (E.J. Petuch, 1986) - (CONIDAE)
- riosi, Phidiana riosi F.J. García & J.S. Troncoso, 2003 - (FACELINIDAE)
- riosi, Cuthona riosi A. Hermosillo & Á. Valdés, 2008 - (FIONIDAE)
- riosi, Siphonochelus riosi (H.W. Bertsch & D'Attilio, 1980) - (MURICIDAE)
- riosi, Typhina riosi H.W. Bertsch & D'Attilio, 1980 - syn of: Siphonochelus riosi (H.W. Bertsch & D'Attilio, 1980) - (MURICIDAE)
- riosi, Typhis riosi H.W. Bertsch & D'Attilio, 1980 - syn of: Siphonochelus riosi (H.W. Bertsch & D'Attilio, 1980) - (MURICIDAE)
- riosi, Olivella riosi M.A. Klappenbach, 1991 - (OLIVELLIDAE)
- riosi, Copulabyssia riosi J.H. Leal & L.R.L. Simone, 2000 - (PSEUDOCOCCULINIDAE)
- riosi, Sediliopsis riosi D.L. Tippett, 1995 - (PSEUDOMELATOMIDAE)
- riosi, Euterebra riosi (T. Bratcher & W.O. Cernohorsky, 1985) - (TEREBRIDAE)
- riosi, Cooperella riosi M. Huber, 2010 - (VENERIDAE)
- riosi, Adelomelon riosi W.J. Clench & H. Turner, 1964 - (VOLUTIDAE)
- rioui, Kalidos rioui E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- ripacurcica, Xerocrassa ripacurcica (A. Bofill, 1886) - (HYGROMIIDAE)
- ripacurcica montsicciana, Xerocrassa ripacurcica montsicciana (A. Bofill, 1890) - (HYGROMIIDAE)
- ripacurcica oreina, Xerocrassa ripacurcica oreina (P. Fagot, 1888) - (HYGROMIIDAE)
- ripacurcicus, Obscurella ripacurcicus P. Fagot, 1891 - syn of: Cochlostoma martorelli (G. Servain, 1880) - (COCHLOSTOMATIDAE)
- ripacurcicus, Pomatias ripacurcicus A. Bofill, 1915 - (POMATIIDAE)
- ripacurtiae, Moitessieria ripacurtiae A. Tarruella, J. Corbella, G. Guillén, L. Prats & D.M. Alba, 2013 - (MOITESSIERIIDAE)
- ripae, Omphalotropis ripae E. Fischer-Piette, F. Blanc & F. Salvat, 1969 - (ASSIMINEIDAE)
- Ripalania, Genus Ripalania T. Iredale, 1943 (THIARIDAE)
- ripanjensis, Melanopsis haueri ripanjensis T.A. Neubauer, M. Harzhauser, A. Kroh, E. Georgopoulou & O. Mandic, - (MELANOPSIDAE) (FOSSIL)
- riparbelli, Lucilla riparbelli F.L. Giusti, 1976 - syn of: Lucilla scintilla (R.T. Lowe, 1852) - (HELICODISCIDAE)
- riparbellii, Hebetodiscus riparbellii F.L. Giusti, 1976 - (HELICODISCIDAE)
- riparia, Taiwanassiminea riparia (W.S.S. Van Benthem-Jutting, 1963) - (ASSIMINEIDAE)
- riparia, Monacha riparia C.A. Westerlund, 1889 - syn of: Eutheba cantiana (G. Montagu, 1803) - (HYGROMIIDAE)
- riparia, Limea riparia P.A. Maxwell, 1992 † - (LIMIDAE) (FOSSIL)
- riparia, Volvarina riparia S. Gofas & F. Fernandes, 1992 - (MARGINELLIDAE)
- riparia, Patella riparia K.A. Möbius, 1876 - syn of: Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- riparia, Planaxis riparia A. Risso, 1826 † - syn of: Tritia cuvierii (B.C.M. Payraudeau, 1826 †) - (PLANAXIDAE) (FOSSIL)
- riparia, Alvania riparia P. Lozouet, 1998 † - (RISSOIDAE) (FOSSIL)
- riparia, Unio riparia C. Pfeiffer, 1821 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- riparia, Gastrocopta riparia H.A. Pilsbry, 1916 - (VERTIGINIDAE)
- Riparioceras, syn of: Genus Gleviceras Buckman , 1918 (OXYNOTICERATIDAE) (FOSSIL)
- riparium, Carychium riparium L.R. Hubricht, 1978 - (ELLOBIIDAE)
- riparius, Macrochlamys riparius P.M. Heude, 1885 - (ARIOPHANTIDAE)
- riparius, Chicoreus riparius E.H. Vokes, 1967 † - (MURICIDAE) (FOSSIL)
- riparius, Gyraulus riparius (C.A. Westerlund, 1865) - (PLANORBIDAE)
- riparius, Ancylus riparius A.G. Desmarest, 1814 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- riparius, Obeliscus cuneus riparius (L. Pfeiffer, 1852) - (SUBULINIDAE)
- ripaudi, Ancilla ripaudi (Vasseur, 1881 †) - (OLIVIDAE) (FOSSIL)
- ripaudi, Potamides ripaudi (Vasseur, 1881 †) - (POTAMIDIDAE) (FOSSIL)
- ripensis, Cyclocardia ripensis A.M. Popov & O.A. Scarlato, 1980 - (CARDITIDAE)
- Ripernites, syn of: Genus Metaperrinites Ruzhencev , 1950 (PERRINITIDAE) (FOSSIL)
- riperti, Potadoma riperti A. Samé-Ekobo & T.K. Kristensen, 1985 - (PACHYCHILIDAE)
- Riphaeites, syn of: Genus Eothinites Ruzhencev , 1933 (METALEGOCERATIDAE) (FOSSIL)
- Riphaeoclymenia, Genus Riphaeoclymenia Bogoslovsky, 1981 (BILOCLYMENIIDAE) (FOSSIL)
- riphaeum, Sinoceras riphaeum P.A. Zhuravleva, 1978 † - (MICHELINOCERATIDAE) (FOSSIL)
- riphaeum, Tibichoanoceras riphaeum (P.A. Zhuravleva, 1978 †) - (ORTHOCERATIDAE) (FOSSIL)
- ripkeni, Chondrina ripkeni (E. Gittenberger, 1973) - (CHONDRINIDAE)
- ripkeni, Pyrostoma mellae ripkeni G. Falkner, 2000 - (CLAUSILIIDAE)
- ripkeni, Virpazaria ripkeni E. Gittenberger, 1969 - (SPELAEODISCIDAE)
- ripkeni, Canarivitrina ripkeni (M.R. Alonso & C.M. Ibáñez, 2000) - (VITRINIDAE)
- Ripkeniella, Genus Ripkeniella R. Hutterer & E. Gittenberger, 1998 (COCHLICELLIDAE)
- ripleanus, Fusimilis ripleanus T.A. Conrad † - syn of: Beretra ripleyana (T.A. Conrad, 1858 †) - (TURRIDAE) (FOSSIL)
- ripleyana, Trigonostoma ripleyana N.F. Sohl, 1964 † - (CANCELLARIIDAE) (FOSSIL)
- ripleyana, Mitridomus ripleyana (B. Wade, 1926 †) - (COSTELLARIIDAE) (FOSSIL)
- ripleyana, Crassatella ripleyana T.A. Conrad, 1858 † - syn of: Crassatella vadosa Morton, 1834 † - (CRASSATELLIDAE) (FOSSIL)
- ripleyana, Gastrochaena ripleyana L.W. Stephenson, 1941 † - (GASTROCHAENIDAE) (FOSSIL)
- ripleyana, Lucina ripleyana B. Wade, 1926 † - (LUCINIDAE) (FOSSIL)
- ripleyana, Mathilda ripleyana B. Wade, 1926 † - (MATHILDIDAE) (FOSSIL)
- ripleyana, Deussenia ripleyana A. Harbison, 1945 † - (MELONGENIDAE) (FOSSIL)
- ripleyana, Lithophaga ripleyana W.M. Gabb, 1862 † - (MYTILIDAE) (FOSSIL)
- ripleyana, Stantonella ripleyana (T.A. Conrad, 1860 †) - (STREPSIDURIDAE) (FOSSIL)
- ripleyana, Beretra ripleyana (T.A. Conrad, 1858 †) - (TURRIDAE) (FOSSIL)
- ripleyanum, Dentalium ripleyanum W.M. Gabb, 1860 † - (DENTALIIDAE) (FOSSIL)
- Ripleyella, Subgenus Ornopsis (Ripleyella) Harbison, 1945 (FASCIOLARIIDAE) (FOSSIL)
- ripleyi, Platypleuroceras ripleyi (C.T. Simpson †) - (POLYMORPHITIDAE) (FOSSIL)
- ripochi, Hemicycla ripochi J.F. Mabille, 1882 - syn of: Hemicycla gaudryi (P.B. Webb & S. Berthelot, 1833) - (HELICIDAE)
- ripollica, Riedelia ripollica P. Fagot, 1882 - syn of: Hygromia limbata (J.P.R. Draparnaud, 1805) - (HYGROMIIDAE)
- Ripophos, syn of: Genus Antillophos W.P. Woodring, 1928 (NASSARIIDAE)
- rippensis, Radix rippensis (J. Almera & Bofill y Poch, 1895 †) - (LYMNAEIDAE) (FOSSIL)
- rippingalei, Gemixystus rippingalei (R. Houart, 1998) - (MURICIDAE)
- rippingalei, Spondylus rippingalei K.L. Lamprell & J.M. Healy, 2001 - (SPONDYLIDAE)
- ripularum, Trochulus ripularum M. Lessona, 1897 - syn of: Trichia hispida (C. Linnaeus, 1758) - (HYGROMIIDAE)
- riqueti, Sermyla riqueti (J.P.S. Grateloup, 1840) - (THIARIDAE)
- risbeci, Aeolidiella risbeci (Er. Marcus, 1961) - (AEOLIDIIDAE)
- risbeci, Stylocheilus risbeci H. Engel, 1936 - (APLYSIIDAE)
- risbeci, Rostanga risbeci K. Baba, 1991 - (DISCODORIDIDAE)
- risbeci, Polycera risbeci N.H. Odhner, 1941 - (POLYCERIDAE)
- Risbecia, Genus Risbecia N.H. Odhner, 1934 (CHROMODORIDIDAE)
- riscus, Chryseofusus riscus (R. Hadorn & K. Fraussen, 2003) - (FASCIOLARIIDAE)
- Risella, Genus Risella Gray, 1847 (LITTORINIDAE) (FOSSIL)
- Risella, syn of: Genus Bembicium R.A. Philippi, 1846 (LITTORINIDAE)
- Riselloidea, syn of: Genus Risselloidea Cossmann, 1909 (EUCYCLIDAE) (FOSSIL)
- Risellopsis, Genus Risellopsis H.L. Kesteven, 1902 (LITTORINIDAE)
- riseri, Asperspina riseri (M.P. Morse, 1976) - (ASPERSPINIDAE)
- riseri, Hedylopsis riseri M.P. Morse, 1976 - syn of: Asperspina riseri (M.P. Morse, 1976) - (HEDYLOPSIDAE)
- Rishetia, syn of: Genus Glessula E.C. Von Martens, 1860 (SUBULINIDAE)
- rishworthi, Antiguraleus rishworthi P. Vella, 1954 † - (MANGELIIDAE) (FOSSIL)
- riskindi, Humboldtiana riskindi W. Fullington & E.G. Zimmermann, 1977 - (HUMBOLDTIANIDAE)
- Risomurex, Subgenus Muricopsis (Risomurex) A.A. Olsson & J.T.L. McGinty, 1958 (MURICIDAE)
- risoneideneryae, Haplocochlias risoneideneryae J.C.N. Barros, F.N. Santos, E. Cabral & F.D. Acioli, 2002 - (SKENEIDAE)
- riss, Eulima riss F.J. Cantraine, 1835 - (EULIMIDAE)
- rissae, Doris rissae J.B. Vérany, 1846 - (DORIDIDAE)
- rissaniense, Subormoceras rissaniense Kröger, 2008 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- Risselloidea, Genus Risselloidea Cossmann, 1909 (EUCYCLIDAE) (FOSSIL)
- Rissoa, Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- rissoaeformis, Thierachella rissoaeformis (A.E.M. Cossmann, 1885 †) - (RISSOIDAE) (FOSSIL)
- rissoaformis, Rissoella rissoaformis (A.W.B. Powell, 1939) - (RISSOELLIDAE)
- rissoaformis, Jeffreysiella rissoaformis (A.W.B. Powell, 1939) - syn of: Rissoella rissoaformis (A.W.B. Powell, 1939) - (RISSOELLIDAE)
- rissoaformis, Lissotestella rissoaformis (A.W.B. Powell, 1931) - (SEGUENZIOIDEA (unassigned))
- Rissoalaba, Genus Rissoalaba K. Oyama, 1954 (DIALIDAE) (FOSSIL)
- rissoana, Calliopaea rissoana H. Milne-Edwards, 1842 - (LIMAPONTIIDAE)
- rissoanus, Turbo rissoanus S. Delle Chiaje, 1828 - syn of: Rissoa variabilis (J.K. Megerle Von Mühlfeld, 1824) - (TURBINIDAE)
- Rissocerithium, Genus Rissocerithium Conti & Fischer, 1981 (RISSOIDAE) (FOSSIL)
- rissodominguezi, Berghia rissodominguezi C. Muniain & J.A. Ortea, 1999 - (AEOLIDIIDAE)
- rissoella, Hyalogyrina rissoella A. Warén & P. Bouchet, 2009 - (HYALOGYRINIDAE)
- Rissoella, Genus Rissoella J.E. Gray, 1847 (RISSOELLIDAE)
- RISSOELLIDAE J.E. Gray, 1850 - Family (GASTROPODA-HETEROBRANCHIA-HETEROSTROPHA)
- rissoi, Chiton rissoi B.C.M. Payraudeau, 1826 - syn of: Ischnochiton rissoi Angelo & C. Smriglio, 1999 - (CHITONIDAE)
- rissoi, Helix rissoi C.T. Trechmann, 1938 - syn of: Murella melitensis (A.E.J. Férussac, 1821) - (HELICIDAE)
- rissoi, Ischnochiton rissoi Angelo & C. Smriglio, 1999 - (ISCHNOCHITONIDAE)
- rissoi, Leptochiton rissoi (H.F. Nierstrasz, 1905) - (LEPTOCHITONIDAE)
- rissoi, Leptochiton rissoi K.H.J. Thiele, 1893 - syn of: Leptochiton algesirensis (G. Capellini, 1859) - (LEPTOCHITONIDAE)
- rissoi, Bela nebula rissoi (É.A.A. Locard, 1886) - (MANGELIIDAE)
- rissoi, Tricolia rissoi J.V. Audouin, 1826 - syn of: Melarhaphe neritoides (C. Linnaeus, 1758) - (PHASIANELLIDAE)
- rissoi, Raphitoma rissoi É.A.A. Locard, 1886 - syn of: Mangelia costulata A. Risso, 1826 - (RAPHITOMIDAE)
- rissoi, Rissoina rissoi H.C. Weinkauff, 1885 ex Audouin - (RISSOINIDAE)
- Rissoia, syn of: Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- rissoiana, Dosinia rissoiana É.A.A. Locard, 1886 - syn of: Dosinia lupina (C. Linnaeus, 1758) - (VENERIDAE)
- rissoianus, Fusinus rissoianus É.A.A. Locard, 1892 - syn of: Fusinus rostratus (A.G. Olivi, 1792) - (FASCIOLARIIDAE)
- rissoianus, Fusinus syracusanus rissoianus É.A.A. Locard, 1892 - (FASCIOLARIIDAE)
- RISSOIDAE Gray, 1847 - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA)
- rissoide, Cerithium rissoide G.B. II Sowerby in L.A. Reeve, 1865 - syn of: Cerithium lutosum K.T. Menke, 1828 - (CERITHIIDAE)
- rissoides, Anachis rissoides (J.P.S. Grateloup, 1834 †) - (COLUMBELLIDAE) (FOSSIL)
- rissoides, Thala rissoides (J.P.S. Grateloup, 1833 †) - (COSTELLARIIDAE) (FOSSIL)
- rissoides, Aurelianella rissoides A.E.M. Cossmann, 1898 † - (DIASTOMATIDAE) (FOSSIL)
- rissoides, Littoraria rissoides G.P. Deshayes, 1861 † - (LITTORINIDAE) (FOSSIL)
- rissoides, Peracle rissoides J.J. Tesch, 1903 - (PERACLIDAE)
- rissoides, Odostomia rissoides S.C.T. Hanley, 1844 - syn of: Brachystomia scalaris (W. Macgillivray, 1843) - (PYRAMIDELLIDAE)
- rissoides, Daphnella rissoides (L.A. Reeve, 1843) - (RAPHITOMIDAE)
- rissoides, Pleurotoma rissoides L.A. Reeve, 1843 - syn of: Daphnella rissoides (L.A. Reeve, 1843) - (TURRIDAE)
- rissoides exilis, Turbonilla rissoides exilis (W. Macgillivray, 1843) - syn of: Brachystomia scalaris (W. Macgillivray, 1843) - (PYRAMIDELLIDAE)
- rissoides exilis, Odostomia rissoides exilis J.G. Jeffreys, 1867 - syn of: Brachystomia scalaris (W. Macgillivray, 1843) - (PYRAMIDELLIDAE)
- rissoides?, Anachis rissoides? (J.P.S. Grateloup, 1834) - (COLUMBELLIDAE)
- rissoideum, Bittium rissoideum (G.B. II Sowerby, 1855) - (CERITHIIDAE)
- rissoiformis, Odostomia rissoiformis K.O. Milaschewitsch, 1912 - syn of: Brachystomia carrozzai (J.J. Van Aartsen, 1987) - (PYRAMIDELLIDAE)
- rissoina, Anacithara rissoina C. Hedley, 1922 - (HORAICLAVIDAE)
- rissoina, Goniochilus rissoina (. Brusina, 1878 †) - (HYDROBIIDAE) (FOSSIL)
- rissoina, Mormula rissoina A. Adams, 1864 - syn of: Mormula philippiana (R.W. Dunker, 1860) - (PYRAMIDELLIDAE)
- Rissoina, Genus Rissoina D'Orbigny, 1840 (RISSOINIDAE)
- rissoinaeforme, Epitonium rissoinaeforme (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- rissoinaeformis, Opalia rissoinaeformis M. Yokoyama, 1927 - syn of: Opalia matajiroi (J.T. Kuroda, 1954) - (EPITONIIDAE)
- rissoinaeformis, Epitonium rissoinaeformis M. Yokoyama, 1927 - syn of: Opalia matajiroi (J.T. Kuroda, 1954) - (EPITONIIDAE)
- rissoinaeformis, Hemisinus rissoinaeformis A.E.M. Cossmann, 1888 † - (THIARIDAE) (FOSSIL)
- RISSOINIDAE Stimpson, 1865 - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA)
- rissoiniformis, Clavus rissoiniformis (E.A. Kay, 1979) - (DRILLIIDAE)
- rissoiniformis, Tylotiella rissoiniformis (E.A. Kay, 1979) - syn of: Clavus rissoiniformis (E.A. Kay, 1979) - (DRILLIIDAE)
- Rissolina, Genus Rissolina A. Gould, 1861 (RISSOINIDAE)
- Rissolittorina, Subgenus Laevilitorina (Rissolittorina) W.F. Ponder, 1966 (LITTORINIDAE)
- Rissomangelia, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- Rissomangilia, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- RISSOOIDEA (UNASSIGNED) - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA) (FOSSIL)
- Rissopsetia, Genus Rissopsetia R.K. Dell, 1956 (PYRAMIDELLIDAE)
- Rissopsis, Genus Rissopsis A. Garrett, 1873 (IRAVADIIDAE)
- Rissostomia, syn of: Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- Rissosyrnola, Genus Rissosyrnola S. Nomura, 1939 (PYRAMIDELLIDAE)
- ristiae, Amphidromus ristiae B. Dharma, 2007 - (CAMAENIDAE)
- ristici, Prososthenia ristici P.S. Pavlovic, 1927 † - (HYDROBIIDAE) (FOSSIL)
- ristici, Valvata ristici (P.S. Pavlovic, 1931 †) - (VALVATIDAE) (FOSSIL)
- ritae, Atlanticonus ritae (E.J. Petuch, 1995) - (CONIDAE)
- ritae, Gladioconus ritae E.J. Petuch, 1995 - syn of: Atlanticonus ritae (E.J. Petuch, 1995) - (CONIDAE)
- ritae, Chicomurex ritae R. Houart, 2013 - (MURICIDAE)
- ritae, Tetrentodon ritae C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- ritana, Tetrentodon ritana C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- ritanida, Crassispira ritanida W.C. Mansfield, 1925 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- ritchieana, Isomeria kolbergi ritchieana H.A. Pilsbry, 1889 - (CAMAENIDAE)
- ritchiei, Cerion ritchiei (C.J. Maynard, 1894) - (CERIONIDAE)
- ritchiei, Leptinaria ritchiei H.A. Pilsbry, 1907 - (SUBULINIDAE)
- ritchiei gigantea, Cerion ritchiei gigantea (C.J. Maynard, 1894) - (CERIONIDAE)
- ritchiei grayi, Cerion ritchiei grayi (C.J. Maynard, 1894) - (CERIONIDAE)
- ritchiei vannostrandi, Cerion ritchiei vannostrandi H.A. Pilsbry & E.G. Vanatta, 1896 - (CERIONIDAE)
- Ritena, Subgenus Nerita (Ritena) J.E. Gray, 1858 (NERITIDAE)
- ritmica, Millereolidia ritmica J.A. Ortea, G.M. Caballer & J. Espinosa, 2003 - syn of: Berghia creutzbergi (Er. Marcus & Ev. Marcus, 1970) - (AEOLIDIIDAE)
- ritmica, Milleria ritmica J.A. Ortea, G.M. Caballer & J. Espinosa, 2003 - syn of: Berghia creutzbergi (Er. Marcus & Ev. Marcus, 1970) - (AEOLIDIIDAE)
- ritteri, Anachis ritteri (L.G. Hertlein & A.M. Strong, 1951) - (COLUMBELLIDAE)
- ritteri, Ischnochiton ritteri W.H. Dall, 1919 - syn of: Tripoplax regularis (P.P. Carpenter, 1855) - (ISCHNOCHITONIDAE)
- ritteri, Neilonella ritteri (W.H. Dall, 1916) - (NEILONELLIDAE)
- ritteri, Delphinites ritteri G. Sayn, 1901 † - (NEOCOMITIDAE) (FOSSIL)
- ritteri, Odostomia ritteri W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- ritteri, Monoplex ritteri Schmelz, 1989 † - (RANELLIDAE) (FOSSIL)
- ritteri, Tethys ritteri T.D.A. Cockerell, 1901 - (TETHYDIDAE)
- ritteri, Tindaria ritteri W.H. Dall, 1916 - syn of: Neilonella ritteri (W.H. Dall, 1916) - (TINDARIIDAE)
- ritteri, Dolichupis ritteri (W.J. Raymond, 1903) - (TRIVIIDAE)
- ritteri, Trivia ritteri W.J. Raymond, 1903 - syn of: Dolichupis ritteri (W.J. Raymond, 1903) - (TRIVIIDAE)
- rittmanni, Omaimaiceras rittmanni Mahmoud, 1955 † - (KNEMICERATIDAE) (FOSSIL)
- rituola, Phosinella rituola W.P. Woodring, 1928 - syn of: Rissoina sagraiana A.V.M.D. D'Orbigny, 1842 - (RISSOINIDAE)
- ritzkowskii, Latirulus ritzkowskii (R. Janssen, 1979 †) - (FASCIOLARIIDAE) (FOSSIL)
- Riuguhdrillia, Genus Riuguhdrillia K. Oyama, 1951 (BORSONIIDAE)
- riva, Fluviopupa riva S. Zielske & M. Haase, 2014 - (HYDROBIIDAE)
- rivale, Geisonoceras rivale (Barrande †) - (GEISONOCERATIDAE) (FOSSIL)
- rivale, Sphaerium rivale A. Moquin-Tandon, 1855 - syn of: Sphaerium cornea (C. Linnaeus, 1767) - (SPHAERIIDAE)
- rivalis, Corbicula rivalis (R.A. Philippi, 1851) - (CYRENIDAE)
- rivalis, Tanysiphon rivalis W.H. Benson, 1858 - (MACTRIDAE)
- rivalis, Murex rivalis T.A. de M. Monterosato, 1923 - syn of: Hexaplex trunculus (C. Linnaeus, 1758) - (MURICIDAE)
- rivalis, Costatella rivalis T. Brown, 1827 - syn of: Physella acuta (J.P.R. Draparnaud, 1805) - (PHYSIDAE)
- rivana, Modicella rivana R. Schröder, 1913 - syn of: Chondrina lusitanica (L. Pfeiffer, 1848) - (CHONDRINIDAE)
- rivasii, Naesiotus rivasii (D'Orbigny, 1837) - (BULIMULIDAE)
- rivellensis, Helix rivellensis W. Kobelt, 1904 - syn of: Ambigua fuscolabiata lauriensis (W. Kobelt, 1905) - (HELICIDAE)
- riverae, Olivella riverae A.A. Olsson, 1956 - (OLIVELLIDAE)
- riverae, Turritella riverae DeVries, 2007 † - (TURRITELLIDAE) (FOSSIL)
- riveroni, Torrecoptis riveroni C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- riverorum, Sabaudiella riverorum Aguirre-Urreta & Rawson, 2012 † - (LEPTOCERATOIDIDAE) (FOSSIL)
- rivertonensis, Conilithes rivertonensis (Finlay, 1926 †) - (CONIDAE) (FOSSIL)
- rivertonensis, Eatoniella rivertonensis (Finlay, 1924 †) - (EATONIELLIDAE) (FOSSIL)
- rivesi, Dentimargo rivesi J. Espinosa & J.A. Ortea, 2013 - (MARGINELLIDAE)
- riveti, Zoniferella riveti J. Germain, 1907 - (SUBULINIDAE)
- riveti bizonalis, Zoniferella riveti bizonalis J. Germain, 1907 - (SUBULINIDAE)
- rivicola, Lignopholas rivicola (G.B. II Sowerby, 1849) - (PHOLADIDAE)
- rivicola, Pholas rivicola G.B. II Sowerby, 1849 - syn of: Lignopholas rivicola (G.B. II Sowerby, 1849) - (PHOLADIDAE)
- Rivicola, syn of: Genus Physa J.P.R. Draparnaud, 1801 (PHYSIDAE)
- rivicola, Sphaerium rivicola W.E. Leach in J.B.P.A. Lamarck, 1815 - (SPHAERIIDAE)
- rivicola sabulicola, Cyclas rivicola sabulicola I. Krynicki, 1837 - syn of: Sphaerium rivicola W.E. Leach in J.B.P.A. Lamarck, 1815 - (SPHAERIIDAE)
- Rivicoliana, syn of: Genus Sphaerium J.A. Scopoli, 1777 (SPHAERIIDAE)
- rivierae, Lehmaniceras rivierae M. Collignon 1983 † - (AMMONOIDEA (unassigned)) (FOSSIL)
- rivierae, Texasia rivierae M. Collignon, 1983 † - (COLLIGNONICERATIDAE) (FOSSIL)
- rivierana, Pupilla rivierana W.H. Benson, 1854 - syn of: Truncatellina callicratis (A. Scacchi, 1833) - (PUPILLIDAE)
- rivierana, Truncatellina rivierana W.H. Benson, 1854 - syn of: Truncatellina callicratis (A. Scacchi, 1833) - (VERTIGINIDAE)
- rivierense, Osperleioceras rivierense (Monestier, 1921 †) - (HILDOCERATIDAE) (FOSSIL)
- rivifontis, Exiligada rivifontis F. Criscione, A. Law & F. Köhler, 2012 - (CAMAENIDAE)
- rivina, Corbicula rivina S. Clessin - syn of: Corbiculina australis (G.P. Deshayes, 1830) - (CYRENIDAE)
- rivoliana, Harpa rivoliana R.P. Lesson - syn of: Harpa crenata W.J. Swainson, 1822 - (HARPIDAE)
- rivolii, Corilla rivolii (G.P. Deshayes) - (CORILLIDAE)
- rivolii, Acostaea rivolii (G.P. Deshayes, 1827) - (ETHERIIDAE)
- rivolii, Mulleria rivolii G.P. Deshayes, 1827 - syn of: Acostaea rivolii (G.P. Deshayes, 1827) - (ETHERIIDAE)
- Rivomarginella, Genus Rivomarginella R.A.M. Brandt, 1968 (MARGINELLIDAE)
- rivulare, Pomatias rivulare (K.E.I. von Eichwald, 1829) - (POMATIIDAE)
- rivulare, Pisidium rivulare S. Clessin, 1879 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- Rivularia, Genus Rivularia P.M. Heude, 1890 (VIVIPARIDAE)
- rivularis, Crassostrea rivularis (A.A. Gould, 1861) - (OSTREIDAE)
- rivularis, Sinonovacula rivularis Y.F. Huang & S.P. Zhang, 2007 - (PHARIDAE)
- rivularis, Ferrissia rivularis (T. Say, 1817) - (PLANORBIDAE)
- rivularis, Bulinus truncatus rivularis (R.A. Philippi, 1836) - (PLANORBIDAE)
- rivularis, Solenaia rivularis (P.M. Heude, 1877) - (UNIONIDAE)
- rivularis, Unio rivularis A. Moquin-Tandon, 1855 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- rivularis, Anodon rivularis P.M. Heude, 1877 - syn of: Anemina arcaeformis (P.M. Heude, 1877) - (UNIONIDAE)
- rivularis, Circe rivularis (I. von Born, 1778) - (VENERIDAE)
- rivularius, Conus rivularius L.A. Reeve, 1849 - syn of: Nitidoconus boeticus (L.A. Reeve, 1844) - (CONIDAE)
- rivulensis, Latirulus rivulensis P. Lozouet, 2015 - (FASCIOLARIIDAE)
- Rivulina, syn of: Genus Paludomus W.J. Swainson, 1840 (PALUDOMIDAE)
- Rivulina, syn of: Genus Pisidium L. Pfeiffer, 1821 (SPHAERIIDAE)
- rivurbana, Turritella rivurbana Cooke, 1926 † - (TURRITELLIDAE) (FOSSIL)
- riwo, Flabellina riwo T.M. Gosliner & R.C. Willan, 1991 - (FLABELLINIDAE)
- riwoqeensis, Antijanira riwoqeensis Zhang, 1985 † - (ANTIJANIRIDAE) (FOSSIL)
- Rixa, Subgenus Puncturella (Rixa) T. Iredale, 1924 (FISSURELLIDAE)
- rixfordi, Sonorelix rixfordi (H.A. Pilsbry, 1919) - (HELMINTHOGLYPTIDAE)
- rixfordi, Immersidens rixfordi G.D. Hanna, 1923 - (VERTIGINIDAE)
- rixtae, Turbonilla rixtae D. De Jong & H.E. Coomans, 1988 - (PYRAMIDELLIDAE)
- rizali, Turriconus rizali (B.M. Olivera & J.S. Biggs, 2010) - (CONIDAE)
- Rizoceras, Genus Rizoceras Hyatt, 1884 (ONCOCERATIDAE) (FOSSIL)
- Rizosceras, syn of: Genus Rizoceras Hyatt, 1884 (ONCOCERATIDAE) (FOSSIL)
- rizzae, Doris rizzae J.B. Vérany, 1846 - (DORIDIDAE)
- rizzae, Monacha rizzae (A. Aradas, 1843) - (HYGROMIIDAE)
- rizzae, Tectonatica rizzae (R.A. Philippi, 1844) - (NATICIDAE)
- rizzeana, Cecilioides rizzeana (L. Benoit, 1862) - (FERUSSACIIDAE)
- Rizzolia, syn of: Genus Cratena L.S.R. Bergh, 1864 (FACELINIDAE)
- rjabininae, Cyclocardia rjabininae (O.A. Scarlato, 1955) - (CARDITIDAE)
- rjasanensis, Okaites rjasanensis Teisseyre, 1883 † - (PERISPHINCTIDAE) (FOSSIL)
- rnanitobense, Westonoceras rnanitobense (J.J.F. Whiteaves, 1890 †) - (WESTONOCERATIDAE) (FOSSIL)
- roadense, Gastrioceras roadense Böse, 1919 † - syn of: Roadoceras roadense (Böse, 1919 †) - (GASTRIOCERATIDAE) (FOSSIL)
- roadense, Roadoceras roadense (Böse, 1919 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- roadnightae, Livonia roadnightae (F. McCoy, 1881) - (VOLUTIDAE)
- Roadoceras, Genus Roadoceras Zhou , 1985 (PARAGASTRIOCERATIDAE) (FOSSIL)
- roamoralesi, Cyphoma roamoralesi O. Macsotay & B. Campos, 2001 - syn of: Cyphoma christahemmenae (D. Fehse, 1997) - (OVULIDAE)
- roanense, Lithasia curta roanense I. Lea, 1864 - (PLEUROCERIDAE)
- roanensis, Discoscaphites roanensis L.W. Stephenson, 1941 † - syn of: Discoscaphites conradi (Morton, 1834 †) - (SCAPHITIDAE) (FOSSIL)
- roanokensis, Elliptio roanokensis I. Lea, 1838 - (UNIONIDAE)
- roanokoides, Unio roanokoides I. Lea, 1868 - syn of: Elliptio roanokensis I. Lea, 1838 - (UNIONIDAE)
- roatanensis, Conasprella roatanensis (E.J. Petuch & D.M. Sargent, 2011) - (CONIDAE)
- roatanensis, Jaspidiconus roatanensis (E.J. Petuch & D.M. Sargent, 2011) - syn of: Conasprella roatanensis (E.J. Petuch & D.M. Sargent, 2011) - (CONIDAE)
- roatanensis, Choanopoma andrewsi roatanensis H.G. Richards, 1938 - (POMATIIDAE)
- robagliana, Retusa robagliana (P. Fischer, 1869) - (RETUSIDAE)
- robai, Nuculana robai (J.T. Kuroda, 1929) - (NUCULANIDAE)
- robai, Leda robai J.T. Kuroda, 1929 - syn of: Nuculana robai (J.T. Kuroda, 1929) - (NUCULANIDAE)
- robai, Robaia robai J.T. Kuroda, 1929 - syn of: Nuculana robai (J.T. Kuroda, 1929) - (NUCULANIDAE)
- robai, Nucula robai J.T. Kuroda, 1929 - syn of: Nuculana robai (J.T. Kuroda, 1929) - (NUCULIDAE)
- Robaia, Genus Robaia T. Habe, 1958 (NUCULANIDAE)
- robbai, Synthopsis robbai A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- robbiae, Mansfieldella robbiae B.M. Landau, 1996 † - (OLIVELLIDAE) (FOSSIL)
- robbinsi, Eunema robbinsi J.W. Hall, 1861 † - syn of: Globonema niota (J.W. Hall, 1861 †) - (LOPHOSPIRIDAE) (FOSSIL)
- robbinsi, Globonema robbinsi Ulrich & Scofield, 1897 † - syn of: Globonema niota (J.W. Hall, 1861 †) - (TROCHONEMATIDAE) (FOSSIL)
- robensis, Philobrya robensis (B.C. Cotton, 1931) - (PHILOBRYIDAE)
- Robertella, Genus Robertella Cossmann, 1903 (RADIOLITIDAE) (FOSSIL)
- roberti, Stalioa roberti Morgan, 1920 † - (AMNICOLIDAE) (FOSSIL)
- roberti, Metula roberti A.A. Olsson, 1967 † - (BUCCINIDAE) (FOSSIL)
- roberti, Anachis roberti D. Monsecour & D. Monsecour, 2006 - (COLUMBELLIDAE)
- roberti, Conasprella roberti (G. Richard, 2009) - (CONIDAE)
- roberti, Dalliconus roberti G. Richard, 2009 - syn of: Conasprella roberti (G. Richard, 2009) - (CONIDAE)
- roberti, Gyroscala roberti (W.H. Dall, 1917) - (EPITONIIDAE)
- roberti, Epitonium roberti W.H. Dall, 1917 - syn of: Gyroscala roberti (W.H. Dall, 1917) - (EPITONIIDAE)
- roberti, Haliotis dalli roberti J.H. McLean, 1970 - (HALIOTIDAE)
- roberti, Avenionia roberti H.D. Boeters, 1967 - (HYDROBIIDAE)
- roberti, Volvarina roberti A.R.J.B. Bavay, 1917 - (MARGINELLIDAE)
- roberti, Chicoreus roberti L. Bozzetti, 2015 - (MURICIDAE)
- roberti, Bouryia roberti J.M. Pacaud, 2011 † - (POMATIOPSIDAE) (FOSSIL)
- roberti, Hemiprionites roberti Jenks & al., 2010 † - (PRIONITIDAE) (FOSSIL)
- roberti, Isognomon roberti H.J. Koch, 1953 - syn of: Isognomon perna (C. Linnaeus, 1767) - (PTERIIDAE)
- roberti, Gongylostoma peccatrix roberti C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- robertianae, Eolis robertianae W.C. MacIntosh, 1865 - syn of: Eubranchus farrani (J. Alder & A. Hancock, 1844) - (AEOLIDIIDAE)
- robertianae, Eubranchus robertianae S.A. McIntosh, 1865 - syn of: Eubranchus tricolor E. Forbes, 1838 - (EUBRANCHIDAE)
- robertianum, Tolvericeras robertianum Énay, Gallois & Etches, 2014 † - (PERISPHINCTIDAE) (FOSSIL)
- robertianum, Pseudhelicoceras robertianum (d'Orbigny, 1842 †) - (TURRILITIDAE) (FOSSIL)
- Robertotrivia, syn of: Genus Trivellona T. Iredale, 1931 (TRIVIIDAE)
- robertsi, Aplysia robertsi (H.A. Pilsbry, 1895) - (APLYSIIDAE)
- robertsi, Ningbingia robertsi Cook, 1998 † - syn of: Westraliadiscus robertsi (Cook, 1998 †) - (CAMAENIDAE) (FOSSIL)
- robertsi, Pseudozonaria robertsi (Hildago, 1906) - (CYPRAEIDAE)
- robertsi, Cypraea robertsi J.G. Hidalgo, 1906 - syn of: Pseudozonaria robertsi (Hildago, 1906) - (CYPRAEIDAE)
- robertsi, Liospira robertsi Reed, 1906 † - (EOTOMARIIDAE) (FOSSIL)
- robertsi, Constrigymnites robertsi Bucher, 1992 † - (GYMNITIDAE) (FOSSIL)
- robertsi, Divaricella robertsi H.G. Richards, 1953 † - (LUCINIDAE) (FOSSIL)
- robertsi, Thaumastus robertsi H.A. Pilsbry, 1944 - (MEGASPIRIDAE)
- robertsi, Iphitus robertsi B. Sabelli & M. Taviani, 1997 - (NYSTIELLIDAE)
- robertsi, Polyptychites robertsi Alsen, 2006 † - (POLYPTYCHITIDAE) (FOSSIL)
- robertsi, Hesperiella robertsi E.K. Yoo, 1988 † - (PORCELLIIDAE) (FOSSIL)
- robertsi, Leptopeas robertsi (H.A. Pilsbry, 1907) - (SUBULINIDAE)
- robertsi, Trochus robertsi H.A. Pilsbry, 1889 - (TROCHIDAE)
- robertsi, Westraliadiscus robertsi (Cook, 1998 †) - (TROPIDODISCIDAE) (FOSSIL)
- robertsi, Geoscala robertsi (C.B. Adams, 1851) - (UROCOPTIDAE)
- robertsi satipoensis, Thaumastus robertsi satipoensis H.A. Pilsbry, 1944 - (MEGASPIRIDAE)
- Robertsiella, Genus Robertsiella G.M. Davis & G.J. Greer, 1980 (POMATIOPSIDAE)
- robertsii, Astartila robertsii Johnston, 1887 † - syn of: Astartila intrepida J.B.M. Dana, 1847 † - (MEGADESMIDAE) (FOSSIL)
- robertsii, Cyrtoceras robertsii Whidborne † - (ONCOCERIDA (unassigned)) (FOSSIL)
- robertsii, Orthoceras robertsii Whidborne † - (ORTHOCERATIDAE) (FOSSIL)
- robertsii, Sanguinolaria robertsii G.W. Tryon, 1870 - syn of: Hiatula ambigua (L.A. Reeve, 1857) - (PSAMMOBIIDAE)
- robertsii, Actinopteria robertsii Whidborne † - (PTERINEIDAE) (FOSSIL)
- robertsoni, Elachisina robertsoni E.A. Kay, 1979 - (ELACHISINIDAE)
- robertsoni, Inoceramus robertsoni Walaszczyk & Cobban, 2006 † - (INOCERAMIDAE) (FOSSIL)
- robertsoni, Xenoceltites robertsoni McLearn, 1945 † - syn of: Kashmirites warreni McLearn, 1945 † - (KASHMIRITIDAE) (FOSSIL)
- robertsoni, Favartia robertsoni D'Attilio & B.W. Myers, 1986 - syn of: Favartia brevicula (Sowerby, 1834) - (MURICIDAE)
- robertsoni, Quasisimnia robertsoni (C.N. Cate, 1973) - (OVULIDAE)
- robertsoni, Plectoceras robertsoni (J.W. Hall †) - (PLECTOCERATIDAE) (FOSSIL)
- robertsoni, Oncomelania hupensis robertsoni (G.M. Davis, 1999) - (POMATIOPSIDAE)
- robertsoni, Folinella robertsoni (C.O. Van Regteren Altena, 1975) - (PYRAMIDELLIDAE)
- robertsoni, Chrysallida robertsoni (C.O. Van Regteren Altena, 1975) - syn of: Folinella robertsoni (C.O. Van Regteren Altena, 1975) - (PYRAMIDELLIDAE)
- robertsoni, Rissoella confusa robertsoni W.F. Ponder & E.K. Yoo, 1977 - (RISSOELLIDAE)
- robertsoni, Cingula robertsoni Roe, 1958 - (RISSOIDAE)
- robertsoni, Macromphalina robertsoni E. Rolán & F. Rubio, 1998 - (VANIKORIDAE)
- robertsoni, Bellamya robertsoni (G.R. von Frauenfeld, 1865) - (VIVIPARIDAE)
- robesonense, Sinistrofulgur robesonense (Gardner, 1948 †) - (BUSYCONIDAE) (FOSSIL)
- robici, Sadleriana robici (S. Clessin, 1890) - (HYDROBIIDAE)
- robici, Tandonia robici H.R. Simroth, 1910 - (MILACIDAE)
- Robicia, Genus Robicia Brusina, 1897 (HYDROBIIDAE) (FOSSIL)
- robiciana, Bythinella robiciana (S. Clessin, 1890) - (BYTHINELLIDAE)
- robiciana, Paladilhiopsis robiciana (S. Clessin, 1882) - (MOITESSIERIIDAE)
- robiciana illustris, Paladilhiopsis robiciana illustris (H. Schütt, 1970) - (MOITESSIERIIDAE)
- robiciana kostanjevicae, Paladilhiopsis robiciana kostanjevicae (H. Schütt, 1970) - (MOITESSIERIIDAE)
- robiciana trebnikanum, Paladilhiopsis robiciana trebnikanum (R. Slapnik, 1995) - (MOITESSIERIIDAE)
- robiginosa, Cardiomya robiginosa T.A. Okutani & K. Sakurai, 1964 - syn of: Cardiomya behringensis (W. Leche, 1883) - (CUSPIDARIIDAE)
- robiginosus, Pseudotoites robiginosus (Crick, 1894 †) - (OTOITIDAE) (FOSSIL)
- robillardi, Ampelita robillardi (G.F. Angas, 1876) - (ACAVIDAE)
- robillardi, Vescona robillardi G.F. Angas, 1876 - syn of: Ampelita robillardi (G.F. Angas, 1876) - (ACAVIDAE)
- robillardi, Ctenocardia robillardi (G.B. III Sowerby, 1894) - (CARDIIDAE)
- robillardi, Clathurella robillardi H. Adams, 1869 - syn of: Tritonoturris robillardi (H. Adams, 1869) - (CLATHURELLIDAE)
- robillardi, Columbella robillardi G.B. III Sowerby, 1894 - syn of: Mitrella floccata hanleyi (G.P. Deshayes, 1863) - (COLUMBELLIDAE)
- robillardi, Conus robillardi A.C. Bernardi, 1858 - syn of: Rhizoconus vexillum (J.F. Gmelin, 1791) - (CONIDAE)
- robillardi, Epitonium robillardi (G.B. III Sowerby, 1894) - (EPITONIIDAE)
- robillardi, Nodolatirus robillardi (C.M. Tapparone-Canefri, 1879) - (FASCIOLARIIDAE)
- robillardi, Benimakia robillardi (C.M. Tapparone-Canefri, 1879) - syn of: Nodolatirus robillardi (C.M. Tapparone-Canefri, 1879) - (FASCIOLARIIDAE)
- robillardi, Coralliophila robillardi (E. Liénard, 1870) - (MURICIDAE)
- robillardi, Tectonatica robillardi (G.B. III Sowerby, 1894) - (NATICIDAE)
- robillardi, Tritonoturris robillardi (H. Adams, 1869) - (RAPHITOMIDAE)
- robillardi, Circe robillardi A. Römer, 1869 - syn of: Circe scripta (C. Linnaeus, 1758) - (VENERIDAE)
- Robillardia, Genus Robillardia E.A. Smith, 1889 (EULIMIDAE)
- robillardiana, Melanella robillardiana H.A. Pilsbry, 1917 - syn of: Melanella dufresnii T.E. Bowdich, 1832 - (EULIMIDAE)
- robilliardi, Dendronotus robilliardi Korshunova, Sanamyan, Zimina, Fletcher & Martynov, 2016 - (DENDRONOTIDAE)
- robinaldina, Grandigonia robinaldina (A.V.M.D. D'Orbigny, 1844 †) - (IOTRIGONIIDAE) (FOSSIL)
- robinaldina, Mimachlamys robinaldina (A.V.M.D. D'Orbigny, 1847 †) - (PECTINIDAE) (FOSSIL)
- robinaldina, Pinna robinaldina (A.V.M.D. D'Orbigny, 1844 †) - (PINNIDAE) (FOSSIL)
- robini, Pionoconus robini L. Limpalaër & E. Monnier, 2012 - (CONIDAE)
- robini, Lima robini C.A. Fleming, 1950 † - (LIMIDAE) (FOSSIL)
- robini, Peronaea robini (Finlay, 1924 †) - (TELLINIDAE) (FOSSIL)
- robiniana, Helicella robiniana J.R. Bourguignat - syn of: Helicella bolenensis É.A.A. Locard, 1882 - (HYGROMIIDAE)
- robinsonae, Gibberula robinsonae J.A. Ortea, 2015 - (CYSTISCIDAE)
- robinsoncrusoei, Ceraesignum robinsoncrusoei R.E. Golding, R. Bieler, T.A. Rawlings & T.M. Collins, 2014 - (VERMETIDAE)
- robinsoni, Acteonella robinsoni N.F. Sohl & H.A. Kollmann, 1985 † - (ACTEONELLIDAE) (FOSSIL)
- robinsoni, Arctoceras robinsoni Kiparisova, 1947 † - (ARCTOCERATIDAE) (FOSSIL)
- robinsoni, Zelandiella robinsoni (C.A. von Zittel, 1865 †) - (BUCCINIDAE) (FOSSIL)
- robinsoni, Eotomaria robinsoni Roy, 1941 † - (EOTOMARIIDAE) (FOSSIL)
- robinsoni, Gymnites robinsoni Shevyrev, 1995 † - (GYMNITIDAE) (FOSSIL)
- robinsoni, Helicotoma robinsoni Rohr, 1988 † - (HELICOTOMIDAE) (FOSSIL)
- robinsoni, Xenoceltites robinsoni McLearn, 1945 † - syn of: Kashmirites warreni McLearn, 1945 † - (KASHMIRITIDAE) (FOSSIL)
- robinsoni, Distorsio clathrata robinsoni E.J. Petuch, 1987 - (PERSONIDAE)
- robinsoni, Otopleura robinsoni N.H. Ludbrook, 1978 † - (PYRAMIDELLIDAE) (FOSSIL)
- robinsoni, Cymbiola imperialis robinsoni (R.L. Burch, 1954) - (VOLUTIDAE)
- Robinsonia, syn of: Genus Larina A. Adams, 1854 (PALUDOMIDAE)
- Robinsonites, Genus Robinsonites Shevyrev , 1995 (BALATONITIDAE) (FOSSIL)
- robledales, Taringa robledales J.A. Ortea, L. Moro & J. Espinosa, 2015 - (DISCODORIDIDAE)
- roblensis, Eutudora transitoria roblensis C.G. Aguayo & M.L. Jaume, 1954 - (POMATIIDAE)
- roblesi, Deroceras roblesi V. Borredà, 2003 - (AGRIOLIMACIDAE)
- roblesi, Xerocrassa roblesi A. Martínez-Ortí, 2000 - (HYGROMIIDAE)
- Roblinella, Genus Roblinella T. Iredale, 1937 (CHAROPIDAE)
- roblini, Siphonalia roblini J.E. Tenison-Woods, 1876 † - (BUCCINIDAE) (FOSSIL)
- roblini, Roblinella roblini W.F. Petterd, 1879 - syn of: Roblinella gadensis (W.F. Petterd, 1879) - (CHAROPIDAE)
- roblini, Columbella roblini J.E. Tenison-Woods, 1876 - syn of: Mitrella pulla (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- roblinica, Anodonta roblinica É.A.A. Locard, 1890 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- robmoolenbeeki, Profundiconus robmoolenbeeki Tenorio, 2016 - (CONIDAE)
- Roboastra, Genus Roboastra L.S.R. Bergh, 1877 (POLYCERIDAE)
- roboi, Goniobranchus roboi (T.M. Gosliner & D.W. Behrens, 1998) - (CHROMODORIDIDAE)
- roborata, Corbicula roborata G.P. Deshayes, 1857 † - (CYRENIDAE) (FOSSIL)
- roborata, Venus roborata S.C.T. Hanley, 1845 - syn of: Placamen placidum (R.A. Philippi, 1844) - (VENERIDAE)
- roboreus, Teralatirus roboreus (L.A. Reeve, 1845) - (FASCIOLARIIDAE)
- robresia, Moitessieria robresia H.D. Boeters, 2003 - (MOITESSIERIIDAE)
- robroystonensis, Palaeozygopleura robroystonensis (Longst, 1933 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- Robsonella, Genus Robsonella W. Adam, 1938 (OCTOPODIDAE)
- robsonense, Robsonoceras robsonense (Walcott, 1924 †) - (ELLESMEROCERATIDAE) (FOSSIL)
- robsoni, Macrochlamys robsoni B. Rensch, 1932 - (ARIOPHANTIDAE)
- robsoni, Armenoceras robsoni (J.J.F. Whiteaves, 1898 †) - (ARMENOCERATIDAE) (FOSSIL)
- robsoni, Abralia robsoni G.J. Von Grimpe, 1931 - (ENOPLOTEUTHIDAE)
- robsoni, Uroteuthis robsoni (D.O. Alexeyev, 1992) - (LOLIGINIDAE)
- robsoni, Photololigo robsoni (D.O. Alexeyev, 1992) - syn of: Uroteuthis robsoni (D.O. Alexeyev, 1992) - (LOLIGINIDAE)
- robsoni, Notaeolidia robsoni N.H. Odhner, 1934 - syn of: Notaeolidia depressa C.N.E. Eliot, 1905 - (NOTAEOLIDIIDAE)
- robsoni, Nuculana robsoni B. Prashad, 1932 - (NUCULANIDAE)
- robsoni, Amphioctopus robsoni (W. Adam, 1941) - (OCTOPODIDAE)
- robsoni, Onykia robsoni (W. Adam, 1962) - (ONYCHOTEUTHIDAE)
- robsoni, Opisthoteuthis robsoni B.J. O'Shea, 1999 - (OPISTHOTEUTHIDAE)
- robsoni, Sepia robsoni (A.L. Massy, 1927) - (SEPIIDAE)
- robsoni, Lyrodus robsoni G.F. Roch, 1931 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- robsoni, Tremoctopus robsoni T.W. Kirk, 1884 - (TREMOCTOPODIDAE)
- robsoni, Parreysia robsoni L.S. Frierson, 1927 - syn of: Parreysia favidens (W.H. Benson, 1862) - (UNIONIDAE)
- Robsonoceras, Genus Robsonoceras Ulrich & Foerste, 1933 (ELLESMEROCERATIDAE) (FOSSIL)
- roburina, Eurytellina roburina W.H. Dall, 1900 † - (TELLINIDAE) (FOSSIL)
- Roburnella, Genus Roburnella E.G.G. Marcus, 1982 (OXYNOIDAE)
- Robus, syn of: Genus Gibbula Risso, 1826 (TROCHIDAE) (FOSSIL)
- robusta, Erhaia robusta (Z. Kang, 1986) - (AMNICOLIDAE)
- robusta, Pomacea robusta R.A. Philippi, 1852 - syn of: Pomacea columellaris (A.A. Gould, 1848) - (AMPULLARIIDAE)
- robusta, Heterodoris robusta A.E. Verrill & J.H. Emerton, 1882 - (ARMINIDAE)
- robusta, Omphalotropis robusta J.C.H. Crosse in W.H. Pease, 1869 - (ASSIMINEIDAE)
- robusta, Bohaispiropsis robusta Youlou, 1978 † - (BOHAISPIRIDAE) (FOSSIL)
- robusta, Maoritomella robusta Powell, 1942 † - (BORSONIIDAE) (FOSSIL)
- robusta, Acusta tourannensis robusta (O.F. von Möllendorff, 1884) - (BRADYBAENIDAE)
- robusta, Bucania robusta J.J.F. Whiteaves, 1904 † - (BUCANIIDAE) (FOSSIL)
- robusta, Neptunea robusta T.A. Okutani, 1964 - (BUCCINIDAE)
- robusta, Mohnia robusta W.H. Dall, 1913 - (BUCCINIDAE)
- robusta, Tutufa robusta T. Cossignani, 2009 - syn of: Tutufa bufo robusta T. Cossignani, 2009 - (BURSIDAE)
- robusta, Tutufa bufo robusta T. Cossignani, 2009 - (BURSIDAE)
- robusta, Cavolinia labiata robusta J. Rampal, 2002 † - (CAVOLINIIDAE) (FOSSIL)
- robusta, Diacavolinia strangulata robusta S. Van Der Spoel, P. Bleeker & H. Kobayasi, 1993 - (CAVOLINIIDAE)
- robusta, Cerion robusta C.J. Maynard, 1894 - (CERIONIDAE)
- Robusta, syn of: Subgenus Delima (Semirugata) O. Bφttger, 1878 (CLAUSILIIDAE)
- robusta, Montenegrina skipetarica robusta H. Nordsieck, 2009 - (CLAUSILIIDAE)
- robusta, Semirugata vidovichii robusta (H.C. Küster, 1847) - (CLAUSILIIDAE)
- robusta, Clavatula robusta R.B. Hinds, 1843 - syn of: Cheungbeia robusta (R.B. Hinds, 1843) - (CLAVATULIDAE)
- robusta, Heleobia robusta F. Da Silva & I.L. Veitenheimer-Mendes, 2004 - (COCHLIOPIDAE)
- robusta, Tryonia robusta R. Hershler, 1989 - (COCHLIOPIDAE)
- robusta, Cyamiomactra robusta D. Nicol, 1964 - syn of: Cyamiomactra laminifera (É. Lamy, 1906) - (CYAMIIDAE)
- robusta, Persicula robusta (G.B. III Sowerby, 1904) - (CYSTISCIDAE)
- robusta, Diplommatina balansai robusta A.R.J.B. Bavay & P. Dautzenberg, 1903 - (DIPLOMMATINIDAE)
- robusta, Donaldina robusta (Stevens, 1858 †) - (DONALDINIDAE) (FOSSIL)
- robusta, Lissodrillia robusta P.J. Fallon, 2016 - (DRILLIIDAE)
- robusta, Everettia robusta (G.P.L.K. Gude, 1917) - (DYAKIIDAE)
- robusta, Pseudochloritis robusta (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (ELONIDAE) (FOSSIL)
- robusta, Melanella robusta (C.B. Adams, 1861) - (EULIMIDAE)
- robusta, Echineulima robusta (W.H. Pease, 1860) - (EULIMIDAE)
- robusta, Eulima robusta Wood, 1879 † - (EULIMIDAE) (FOSSIL)
- robusta, Stilifer robusta W.F. Petterd, 1884 - syn of: Scalenostoma lodderae (W.F. Petterd, 1884) - (EULIMIDAE)
- robusta, Poleumita robusta J. Perner, 1903 † - syn of: Oriostoma robusta (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- robusta, Falsicingula robusta (C.F.F. von Krauss, 1885) - (FALSICINGULIDAE)
- robusta, Fissurella robusta G.B. III Sowerby, 1889 - (FISSURELLIDAE)
- robusta, Flabellina robusta S. Trinchese, 1874 - syn of: Flabellina verrucosa (G.O. Sars, 1829) - (FLABELLINIDAE)
- robusta, Gadila robusta F. Da Silva, S. Pinto & M. Alves, 2010 - (GADILIDAE)
- robusta, Glycymerita robusta (J. Marwick, 1923 †) - (GLYCYMERIDIDAE) (FOSSIL)
- robusta, Gonioviriatellina robusta Ruan & Mu, 1989 † - (GONIONOWAKIIDAE) (FOSSIL)
- robusta, Peruvispira robusta C.O. Waterhouse, 1963 † - (GOSSELETINIDAE) (FOSSIL)
- robusta, Harpa doris robusta P.F. Röding, 1798 - (HARPIDAE)
- robusta, Helicarion robusta A.A. Gould, 1846 - (HELICARIONIDAE)
- robusta, Helicotoma robusta Ulrich & Scofield, 1897 † - (HELICOTOMIDAE) (FOSSIL)
- robusta, Helicotoma planulata robusta Salter, 1859 † - (HELICOTOMIDAE) (FOSSIL)
- robusta, Vacekia robusta Henriques, 1992 † - syn of: Vacekia striata Henriques, 2012 † - (HILDOCERATIDAE) (FOSSIL)
- robusta, Anacithara robusta C. Hedley, 1922 - (HORAICLAVIDAE)
- robusta, Pyrgulopsis robusta B. Walker, 1908 - (HYDROBIIDAE)
- robusta, Socenia robusta (Roshka, 1973 †) - (HYDROBIIDAE) (FOSSIL)
- robusta, Plagigeyeria robusta H. Schütt, 1959 - (HYDROBIIDAE)
- robusta, Belgrandiella robusta P. Radoman, 1975 - (HYDROBIIDAE)
- robusta, Actinella robusta T.V. Wollaston, 1878 - (HYGROMIIDAE)
- robusta, Paraboysidia robusta (A.R.J.B. Bavay & P. Dautzenberg, 1912) - (HYPSELOSTOMATIDAE)
- robusta, Kellia robusta F.W. Hutton, 1885 - syn of: Neolepton antipodum (H. Filhol, 1880) - (KELLIIDAE)
- robusta, Ruedemannia robusta (Lindström, 1884 †) - (LOPHOSPIRIDAE) (FOSSIL)
- robusta, Stylonema robusta (J.W. Hall, 1859 †) - (LOXONEMATIDAE) (FOSSIL)
- robusta, Palliseria robusta Wilson, 1924 † - (MACLURITIDAE) (FOSSIL)
- robusta, Obesotoma robusta (A. Packard, 1866) - (MANGELIIDAE)
- robusta, Bela robusta Scarponi & al., 2016 † - (MANGELIIDAE) (FOSSIL)
- robusta, Serrata robusta F. Boyer, 2008 - (MARGINELLIDAE)
- robusta, Eratoidea robusta T. McCleery, 2011 - (MARGINELLIDAE)
- robusta, Marginella robusta J.R. Bourguignat, 1880 - syn of: Persicula robusta (G.B. III Sowerby, 1904) - (MARGINELLIDAE)
- robusta, Marginella robusta G.B. III Sowerby, 1904 - syn of: Persicula robusta (G.B. III Sowerby, 1904) - (MARGINELLIDAE)
- robusta, Megadesmus robusta C.F. Laseron, 1910 † - (MEGADESMIDAE) (FOSSIL)
- robusta, Megaspira elatior robusta H.A. Pilsbry, 1904 - (MEGASPIRIDAE)
- robusta, Melanopsis robusta J. Gassies, 1870 - syn of: Melanopsis frustulum P.M.A. Morelet, 1857 - (MELANOPSIDAE)
- robusta, Metoptoma robusta Billings, 1865 † - (METOPTOMATIDAE) (FOSSIL)
- robusta, Mitra robusta L.A. Reeve, 1844 - syn of: Zierliana woldemarii (L.C. Kiener, 1838) - (MITRIDAE)
- robusta, Hormotoma robusta J. Donald, 1902 † - (MURCHISONIIDAE) (FOSSIL)
- robusta, Yaadia robusta Saul, 1978 † - (MYOPHORELLIDAE) (FOSSIL)
- robusta, Lithophaga robusta F.P. Jousseaume in É. Lamy, 1919 - (MYTILIDAE)
- robusta, Nassa robusta T.A. de M. Monterosato, 1890 - syn of: Nassarius lima (L.W. Dillwyn, 1817) - (NASSARIIDAE)
- robusta, Neverita robusta R.W. Dunker, 1860 - syn of: Neverita didyma ampla (R.A. Philippi, 1849) - (NATICIDAE)
- robusta, Bipartopsis robusta J. Gründel, Keupp & H.G. Lang, 2015 † - (NERITOPSIDAE) (FOSSIL)
- robusta, Ledella robusta F.R. Bernard, 1989 - (NUCULANIDAE)
- robusta, Baryspira robusta J. Marwick, 1924 † - (OLIVIDAE) (FOSSIL)
- robusta, Ammonicera robusta E. Rolán, 1992 - (OMALOGYRIDAE)
- robusta, Onykia robusta (A.E. Verrill, 1876) - (ONYCHOTEUTHIDAE)
- robusta, Schileykula robusta (G. Nägele, 1906) - (ORCULIDAE)
- robusta, Oriostoma robusta (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- robusta, Partula robusta W.H. Pease, 1863 - (PARTULIDAE)
- robusta, Denckmannia robusta Denckmann, 1887 † - syn of: Phymatoceras robustum (Denckmann, 1887 †) - (PHYMATOCERATIDAE) (FOSSIL)
- robusta, Eirlysia robusta (R.M. Branson, 1930 †) - (PHYMATOPLEURIDAE) (FOSSIL)
- robusta, Pinna robusta Chiesa & al., 1995 † - (PINNIDAE) (FOSSIL)
- robusta, Pleuromya robusta (Tate) † - (PLEUROMYIDAE) (FOSSIL)
- robusta, Leptomaria robusta Craigin, 1893 † - syn of: Leptomaria austinensis Shumard, 1861 † - (PLEUROTOMARIIDAE) (FOSSIL)
- robusta, Pseudomelania robusta Hudleston † - (PSEUDOMELANIIDAE) (FOSSIL)
- robusta, Cheungbeia robusta (R.B. Hinds, 1843) - (PSEUDOMELATOMIDAE)
- robusta, Pseudomonotis robusta Beede, 1890 † - (PSEUDOMONOTIDAE) (FOSSIL)
- robusta, Pupina robusta J.C. Cox, 1866 - (PUPINIDAE)
- robusta, Eulimella robusta J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998 - (PYRAMIDELLIDAE)
- robusta, Babella robusta M. Harzhauser, 2014 † - (PYRAMIDELLIDAE) (FOSSIL)
- robusta, Odostomia robusta C. Hedley, 1899 - syn of: Turbonilla mumia microscopica (C.B. Adams, 1861) - (PYRAMIDELLIDAE)
- robusta, Monoplex parthenopeus robusta B.H. Belletante, 1954 - (RANELLIDAE)
- robusta, Gymnobela pyrrhogramma robusta P. Dautzenberg & H. Fischer, 1896 - (RAPHITOMIDAE)
- robusta, Pinnocaris robusta Pojeta & al., 1977 † - (RIBEIRIIDAE) (FOSSIL)
- robusta, Cingula robusta H.C. Lea, 1845 - (RISSOIDAE)
- robusta, Rostellaria robusta Rutot, 1875 † - syn of: Hippochrenes oligocenicus Lefevre, 1881 † - (ROSTELLARIIDAE) (FOSSIL)
- robusta, Scenella robusta W.J. Raymond, 1905 † - (SCENELLIDAE) (FOSSIL)
- robusta, Sepiola robusta A. Naef, 1912 - (SEPIOLIDAE)
- robusta, Decorochilina robusta Radabaugh, 1942 † - syn of: Decorochilina whidbornei (J. Perner, 1903 †) - (SOLENISCIDAE) (FOSSIL)
- robusta, Pseudosubulina robusta E.C. Von Martens, 1898 - (SPIRAXIDAE)
- robusta, Lambis robusta (W.J. Swainson, 1821) - (STROMBIDAE)
- robusta, Tellina robusta S.C.T. Hanley, 1844 - (TELLINIDAE)
- robusta, Terebra robusta R.B. Hinds, 1844 - (TEREBRIDAE)
- robusta, Anticlimax robusta F. Rubio & E. Rolán, 2014 - (TORNIDAE)
- robusta, Triphora robusta W.H. Pease, 1871 - (TRIPHORIDAE)
- robusta, Notosinister robusta C.F. Laseron, 1958 - syn of: Aclophoropsis maculosa (C. Hedley, 1903) - (TRIPHORIDAE)
- robusta, Turritella robusta Grzybowski, 1899 † - (TURRITELLIDAE) (FOSSIL)
- robusta, Alasmidonta robusta A.H. Clarke, 1981 - (UNIONIDAE)
- robusta, Sagracoptis robusta C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- robusta, Atamarcia robusta J.D. Stilwell & Zinsmeister, 1992 † - (VENERIDAE) (FOSSIL)
- robusta, Petricola robusta R.A. Philippi, 1849 - syn of: Choristodon robustus (Sowerby, 1834) - (VENERIDAE)
- robusta, Petricola robusta G.B. I Sowerby, 1834 - syn of: Choristodon robustus (Sowerby, 1834) - (VENERIDAE)
- robusta, Scaphella robusta (W.H. Dall, 1889) - (VOLUTIDAE)
- robusta, Xenophora robusta Verrill, 1870 - (XENOPHORIDAE)
- robusta, Xenophora robusta A.E. Verrill, 1870 - syn of: Xenophora conchyliophora robusta A.E. Verrill, 1870 - (XENOPHORIDAE)
- robusta, Xenophora conchyliophora robusta A.E. Verrill, 1870 - (XENOPHORIDAE)
- robusta, Yoldiella robusta J.A. Allen, A. Sanders & G. Hannah, 1995 - (YOLDIIDAE)
- robusta, Schwartziella robusta E. Rolán & L. Luque, 2000 - (ZEBINIDAE)
- robusta asculpta, Plagigeyeria robusta asculpta H. Schütt, 1972 - (HYDROBIIDAE)
- robusta caimitensis, Sagracoptis robusta caimitensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- robusta marionae, Scaphella robusta marionae (H.A. Pilsbry & A.A. Olsson, 1953) - (VOLUTIDAE)
- robusta martyni, Cingula robusta martyni W.H. Dall, 1887 - syn of: Boreocingula martyni (W.H. Dall, 1886) - (RISSOIDAE)
- robusta worki, Scaphella robusta worki J. Coltro, 1998 - (VOLUTIDAE)
- robustalba, Chauvetia robustalba P.G. Oliver & E. Rolán, 2008 - (BUCCINIDAE)
- robusteornatus, Hesperocirrus robusteornatus F. Haas, 1953 † - (CIRRIDAE) (FOSSIL)
- robusticostata, Mangelia robusticostata (E.A. Smith, 1879) - (MANGELIIDAE)
- robusticostata, Cytharella robusticostata E.A. Smith, 1879 - syn of: Mangelia robusticostata (E.A. Smith, 1879) - (MANGELIIDAE)
- robusticostata magna, Mangelia robusticostata magna T. Shuto, 1965 - (MANGELIIDAE)
- robustior, Chilina robustior G.B. I Sowerby, 1838 - (CHILINIDAE)
- robustior, Fusus robustior G.B. III Sowerby, 1880 - syn of: Fusinus ocelliferus robustior G.B. III Sowerby, 1880 - (FASCIOLARIIDAE)
- robustior, Fusinus ocelliferus robustior G.B. III Sowerby, 1880 - (FASCIOLARIIDAE)
- robustior, Cyphoma robustior F.M. Bayer, 1941 - syn of: Cyphoma mcgintyi H.A. Pilsbry, 1939 - (OVULIDAE)
- robustior, Parviturbo robustior F. Rubio, E. Rolán & Lee, 2015 - (SKENEIDAE)
- robustior, Zebina robustior S. Gofas, 1999 - (ZEBINIDAE)
- robustocarinifera, Perrona robustocarinifera B.M. Landau & al., 2013 † - (CLAVATULIDAE) (FOSSIL)
- robustodentata, Olivella robustodentata B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (OLIVELLIDAE) (FOSSIL)
- robustula, Catazone robustula J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- robustum, Acanthoceras robustum Crick, 1907 † - (ACANTHOCERATIDAE) (FOSSIL)
- robustum, Australiceras robustum Whitehouse, 1926 † - (ANCYLOCERATIDAE) (FOSSIL)
- robustum, Anderssonoceras robustum J.K. Zhao & al., 1978 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- robustum, Pericarinoceras robustum Chao & Liang, 1966 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- robustum, Eoaraxoceras robustum Spinosa & Glenister, 2000 † - (ARAXOCERATIDAE) (FOSSIL)
- robustum, Arnioceras robustum F.A. von Quenstedt, 1884 † - (ARIETITIDAE) (FOSSIL)
- robustum, Augustaceras robustum Bucher, 1992 † - (BALATONITIDAE) (FOSSIL)
- robustum, Erioliceras robustum (Van Hoepen 1955 †) - (BRANCOCERATIDAE) (FOSSIL)
- robustum, Bransonia robustum (E.M. Fletcher, 1943 †) - (BRANSONIIDAE) (FOSSIL)
- robustum, Buccinulum robustum A.W.B. Powell, 1929 - (BUCCINIDAE)
- robustum, Dinocardium robustum (J. Lightfoot, 1786) - (CARDIIDAE)
- robustum, Loxocardium robustum A.E.M. Cossmann, 1886 † - (CARDIIDAE) (FOSSIL)
- robustum, Cardium robustum J. Lightfoot, 1786 - syn of: Dinocardium robustum (J. Lightfoot, 1786) - (CARDIIDAE)
- robustum, Digonioceras robustum (Foord & Crick, 1890 †) - (CENOCERATIDAE) (FOSSIL)
- robustum, Bittium robustum Harmer † - (CERITHIIDAE) (FOSSIL)
- robustum, Cerithium robustum G.B. II Sowerby, 1865 - syn of: Cerithium zonatum (W. Wood, 1828) - (CERITHIIDAE)
- robustum, Chaetoderma robustum H. Heath, 1911 - (CHAETODERMATIDAE)
- robustum, Choristoceras robustum Taylor & Guex, 2002 † - (CHORISTOCERATIDAE) (FOSSIL)
- robustum, Dentalium robustum J.W. Brazier, 1877 - (DENTALIIDAE)
- robustum, Beudanticeras robustum Warren, 1947 † - (DESMOCERATIDAE) (FOSSIL)
- robustum, Alpenoceras robustum (Schindewolf, 1942 †) - (DISCOSORIDAE) (FOSSIL)
- robustum, Discosorus robustum Schindewolf, 1942 † - syn of: Alpenoceras robustum (Schindewolf, 1942 †) - (DISCOSORIDAE) (FOSSIL)
- robustum, Graphoceras robustum Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- robustum, Cagliceras robustum (Merla, 1934 †) - (HAMMATOCERATIDAE) (FOSSIL)
- robustum, Cinctoceras robustum (Barrande, 1865 †) - (MANDALOCERATIDAE) (FOSSIL)
- Robustum, Genus Robustum Stinchcomb & Darrough, 1995 (MATTHEVIIDAE) (FOSSIL)
- robustum, Phymatoceras robustum (Denckmann, 1887 †) - (PHYMATOCERATIDAE) (FOSSIL)
- robustum, Platyceras robustum J.W. Hall, 1859 † - (PLATYCERATIDAE) (FOSSIL)
- robustum, Shelbyoceras robustum (Ulrich & Foerste, 1936 †) - (POLLICINIDAE) (FOSSIL)
- robustum, Weinlandipoma gonavense robustum P. Bartsch, 1946 - (POMATIIDAE)
- robustum, Shangraoceras robustum J.K. Zhao & Zheng, 1977 † - (PSEUDOHALORITIDAE) (FOSSIL)
- robustum, Pernodoceras robustum J.K. Zhao & Liang, 1974 † - (PSEUDOTIROLITIDAE) (FOSSIL)
- robustum, Eulomacoceras robustum J.K. Zhao & al., 1978 † - (TAINOCERATIDAE) (FOSSIL)
- robustum, Stikinoceras robustum McLearn, 1937 † - syn of: Stikinoceras kerri McLearn, 1930 † - (THISBITIDAE) (FOSSIL)
- robustum, Atoxon robustum H.R. Simroth, 1897 - (UROCYCLIDAE)
- robustum, Trichotoxon robustum H.R. Simroth, 1896 - (UROCYCLIDAE)
- robustum hazeli, Dinocardium robustum hazeli Ward & B.W. Blackwelder, 1987 - (CARDIIDAE)
- robustum vanhyningi, Dinocardium robustum vanhyningi W.J. Clench & L.C. Smith, 1944 - syn of: Dinocardium robustum (J. Lightfoot, 1786) - (CARDIIDAE)
- robustus, Mexopus robustus S. Kiel & del Carmen Perrilliat, 2001 † - (APORRHAIDAE) (FOSSIL)
- robustus, Aporrhais pespelicani robustus M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1882 - (APORRHAIDAE)
- robustus, Amphidromus heerianus robustus H.C. Fulton, 1896 - (CAMAENIDAE)
- robustus, Dendronotus robustus A.E. Verrill, 1870 - (DENDRONOTIDAE)
- robustus, Muusoctopus robustus (N.A. Voss & W.G. Pearcy, 1990) - (ENTEROCTOPODIDAE)
- robustus, Fusinus robustus (J.B. Trask, 1855) - (FASCIOLARIIDAE)
- robustus, Fusus robustus J.B. Trask, 1855 - syn of: Fusinus robustus (J.B. Trask, 1855) - (FASCIOLARIIDAE)
- robustus, Pectunculus robustus G.B. III Sowerby, 1883 - syn of: Tucetona gealei (G.F. Angas, 1873) - (GLYCYMERIDIDAE)
- robustus, Goniatites robustus Moore & F. Hodson, 1958 † - (GONIATITIDAE) (FOSSIL)
- robustus, Erycites robustus Merla, 1934 † - (HAMMATOCERATIDAE) (FOSSIL)
- robustus, Janusites robustus D. Bert & G. Delanoy, 2000 † - (HEMIHOPLITIDAE) (FOSSIL)
- robustus, Callihoplites robustus Spath † - (HOPLITIDAE) (FOSSIL)
- robustus, Stenosemus robustus (P. Kaas, 1991) - (ISCHNOCHITONIDAE)
- robustus, Moffitites robustus Imlay, 1959 † - (KOSSMATICERATIDAE) (FOSSIL)
- robustus, Gigantomilax robustus H.R. Simroth, 1901 - syn of: Caspilimax keyserlingi (E.C. Von Martens, 1880) - (LIMACIDAE)
- robustus, Scutopus robustus L. Salvini-Plawén, 1970 - (LIMIFOSSORIDAE)
- robustus, Mecynodon robustus Karczewski, 1992 † - (MECYNODONTIDAE) (FOSSIL)
- robustus, Anasibirites robustus (Welter, 1922 †) - (MELAGATHICERATIDAE) (FOSSIL)
- robustus, Adiakritobelus robustus (Duval-Jouve, 1841 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- robustus, Tripterotyphis robustus (J.C. Verco, 1895) - (MURICIDAE)
- robustus, Xymene robustus H.J. Finlay, 1924 - syn of: Xymene pumilus (H.H. Suter, 1899) - (MURICIDAE)
- robustus, Nassarius robustus (T.A. de M. Monterosato, 1890) - (NASSARIIDAE)
- robustus, Polinices robustus Gardner, 1947 † - (NATICIDAE) (FOSSIL)
- robustus, Gyrodes robustus Waring, 1917 † - (NATICIDAE) (FOSSIL)
- robustus, Nautilus robustus Foord & Crick, 1890 † - syn of: Digonioceras robustum (Foord & Crick, 1890 †) - (NAUTILIDAE) (FOSSIL)
- robustus, Octopus robustus P. Brock, 1887 - syn of: Hapalochlaena fasciata (W.E. Hoyle, 1886) - (OCTOPODIDAE)
- robustus, Ommastrephes robustus A.E. Verrill, 1876 - syn of: Onykia robusta (A.E. Verrill, 1876) - (OMMASTREPHIDAE)
- robustus, Gudeodiscus pulvinaris robustus B. Páll-Gergely & A. Hunyadi, 2013 - (PLECTOPYLIDAE)
- robustus, Traskites robustus A. Hyatt & Smith, 1905 † - (SANDLINGITIDAE) (FOSSIL)
- robustus, Scaphander robustus T.A. Okutani, 1966 - (SCAPHANDRIDAE)
- robustus, Ponteixites robustus Warren, 1934 † - (SCAPHITIDAE) (FOSSIL)
- robustus, Sibirites robustus Krafft & Diener, 1909 † - syn of: Anasibirites kingianus (L. Waagen, 1895 †) - (SIBIRITIDAE) (FOSSIL)
- robustus, Margistrombus robustus (G.B. III Sowerby, 1874) - (STROMBIDAE)
- robustus, Strombus robustus G.B. III Sowerby, 1875 - syn of: Margistrombus robustus (G.B. III Sowerby, 1874) - (STROMBIDAE)
- robustus, Tapashanites robustus J.K. Zhao & al., 1978 † - (TAPASHANITIDAE) (FOSSIL)
- robustus, Parathetidites robustus Tozer, 1994 † - (THETIDITIDAE) (FOSSIL)
- robustus, Thisbites robustus Tozer, 1994 † - (THISBITIDAE) (FOSSIL)
- robustus, Triphora robustus W.H. Pease, 1871 - syn of: Triphora robusta W.H. Pease, 1871 - (TRIPHORIDAE)
- robustus, Distriatostylus robustus Sauerland, 1983 † - (UNDASTRIATOSTYLIOLINIDAE) (FOSSIL)
- robustus, Choristodon robustus (Sowerby, 1834) - (VENERIDAE)
- robustus, Angustipes robustus (G. Colosi, 1922) - (VERONICELLIDAE)
- robustus, Viviparus robustus . Brusina, 1878 † - (VIVIPARIDAE) (FOSSIL)
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