- cakobaui, Profundiconus cakobaui (R.G. Moolenbeek, D. Röckel & P. Bouchet, 2008) - (CONIDAE)
- cala, Ammonites cala E. Forbes, 1846 † - syn of: Saghalinites cala (E. Forbes, 1846 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- cala, Barleeia cala (E.A. Smith, 1890) - (BARLEEIIDAE)
- cala, Urosalpinx cala (H.A. Pilsbry, 1897) - (MURICIDAE)
- cala, Pleurotomella cala (R.B. Watson, 1886) - (RAPHITOMIDAE)
- cala, Saghalinites cala (E. Forbes, 1846 †) - (TETRAGONITIDAE) (FOSSIL)
- calabacensis, Sericata calabacensis (C.A. Westerlund, 1892) - (CLAUSILIIDAE)
- calabarense, Acompsoceras calabarense Zaborski, 1985 † - (ACANTHOCERATIDAE) (FOSSIL)
- calabarense, Pseudouhligella calabarense Reyment, 1955 † - (DESMOCERATIDAE) (FOSSIL)
- calabra, Arctica calabra Seguenza, 1876 † - (ARCTICIDAE) (FOSSIL)
- Calabribelus, Genus Calabribelus Weis, Mariotti & Riegraf, 2012 (HOLCOBELIDAE) (FOSSIL)
- calabrica, Helix calabrica C.A. Westerlund, 1876 - (HELICIDAE)
- calabrica, Helix calabrica W. Kobelt, 1876 - syn of: Campylaea planospira setulosa (Briganti, 1825) - (HELICIDAE)
- calabrica, Helicodonta obvoluta calabrica E. Degner, 1927 - (HELICODONTIDAE)
- calabrica, Galba calabrica S. Clessin, 1879 - syn of: Galba truncatula (O.F. Müller, 1774) - (LYMNAEIDAE)
- calabrica, Oxychilus calabrica M. Paulucci, 1879 - syn of: Oxychilus draparnaudi (H.H. Beck, 1837) - (OXYCHILIDAE)
- calabrum, Dentalium calabrum Crema, 1910 - syn of: Antalis agilis (G.O. Sars in G.O. Sars, 1872) - (DENTALIIDAE)
- Calachatina, Subgenus Archachatina (Calachatina) H.A. Pilsbry, 1919 (ACHATINIDAE)
- Calacyclotus, Genus Calacyclotus P. Bartsch & J.P.E. Morrison, 1942 (NEOCYCLOTIDAE)
- Calacylotus, Genus Calacylotus P. Bartsch, 1942 (CYCLOPHORIDAE)
- caladoi, Turbonilla caladoi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- calaeca, Pseudotachea calaeca J.R. Bourguignat in P. Fagot, 1887 - syn of: Pseudotachea splendida (J.P.R. Draparnaud, 1801) - (HELICIDAE)
- calaensis, Iberus calaensis J. Ahuir, 2013 - (HELICIDAE)
- calafia, Pacificor hornii calafia (C.C. Stewart, 1930 †) - (CARDITIDAE) (FOSSIL)
- calafia, Spinigeropsis calafia R.L. Squires & Saul, 2001 † - (SPINILOMATIDAE) (FOSSIL)
- Calagrassor, Genus Calagrassor (BUCCINIDAE)
- calaharicus, Pupoides calaharicus (O. Böttger, 1886) - (PUPILLIDAE)
- Calaiceras, Genus Calaiceras Meneghini, 1874 (PHYLLOCERATIDAE) (FOSSIL)
- calais, Sorgenfreispira calais (F. Kautsky, 1925 †) - (MANGELIIDAE) (FOSSIL)
- calais, Calaiceras calais Meneghini, 1874 † - (PHYLLOCERATIDAE) (FOSSIL)
- calamaeus, Aulacofusus calamaeus (W.H. Dall, 1907) - (BUCCINIDAE)
- calamaeus, Colus calamaeus W.H. Dall, 1907 - syn of: Aulacofusus calamaeus (W.H. Dall, 1907) - (BUCCINIDAE)
- calamaeus hiranoi, Colus calamaeus hiranoi T. Shikama, 1962 - syn of: Aulacofusus hiranoi (T. Shikama, 1962) - (BUCCINIDAE)
- calamanensis, Leptopoma calamanensis P. Bartsch, 1915 - (CYCLOPHORIDAE)
- calamantis, Hildaites calamantis Sassaroli & Venturi, 2012 † - (HILDOCERATIDAE) (FOSSIL)
- calamaria, Hastula calamaria E.W. Vredenburg, 1921 † - (TEREBRIDAE) (FOSSIL)
- calamaris, Pulicicochlea calamaris W.F. Ponder & R.U. Gooding, 1978 - (EULIMIDAE)
- calameli, Volvarina calameli F.P. Jousseaume, 1875 - syn of: Volvarina mitrella (A. Risso, 1826) - (MARGINELLIDAE)
- calameli, Cyclostremiscus calameli (F.P. Jousseaume, 1872) - (TORNIDAE)
- calamensis, Pseudamnicola calamensis P. Glöer, S. Bouzid & H.D. Boeters, 2010 - (HYDROBIIDAE)
- calameus, Colus calameus W.H. Dall, 1907 - syn of: Aulacofusus calamaeus (W.H. Dall, 1907) - (BUCCINIDAE)
- calamianica, Chrysallis calamianica J.F. Quadras & O.F. von Möllendorff, 1894 - (BRADYBAENIDAE)
- calamianica, Lamprocystis calamianica J.F. Quadras & O.F. von Möllendorff, 1894 - (EUCONULIDAE)
- calamianica, Costigo calamianica (O.F. von Möllendorff, 1898) - (VERTIGINIDAE)
- Calamiconus, Genus Calamiconus J.K. Tucker & M.J. Tenorio, 2009 (CONIDAE)
- calamistrata, Cassis calamistrata É.A.A. Locard, 1892 - syn of: Semicassis granulata (I. von Born, 1778) - (CASSIDAE)
- calamitarum, Nephronaias calamitarum (P.M.A. Morelet, 1849) - (UNIONIDAE)
- calamitoides, Bucanopsis calamitoides Yin, 1932 † - (BELLEROPHONTIDAE) (FOSSIL)
- calamitosa, Sterkia calamitosa (H.A. Pilsbry, 1889) - (VERTIGINIDAE)
- calamitosa martiniana, Sterkia calamitosa martiniana H.A. Pilsbry, 1927 - (VERTIGINIDAE)
- calamoides, Murchisoniceras calamoides (Barrande, 1867 †) - (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- calamonensis, Melanopsis calamonensis Magrograssi, 1928 † - (MELANOPSIDAE) (FOSSIL)
- calamus, Graptacme calamus (W.H. Dall, 1889) - (DENTALIIDAE)
- calamus, Eoacmaea calamus (J.C.H. Crosse & P.H. Fischer, 1864) - (EOACMAEIDAE)
- calamus, Orthoceras calamus de Koninck † - (ORTHOCERATIDAE) (FOSSIL)
- calamus, Patella calamus J.C.H. Crosse & P.H. Fischer, 1864 - syn of: Eoacmaea calamus (J.C.H. Crosse & P.H. Fischer, 1864) - (PATELLIDAE)
- calandrellii, Ireneia calandrellii (O.G. Michelotti, 1847 †) - (CUVIERINIDAE) (FOSSIL)
- Calanquites, Genus Calanquites Frau & al., 2016 (HETEROCERATIDAE) (FOSSIL)
- calantica, Semicassis calantica (G.P. Deshayes, 1835 †) - (CASSIDAE) (FOSSIL)
- Calaperostoma, Genus Calaperostoma H.A. Pilsbry, 1935 (NEOCYCLOTIDAE)
- calappa, Fasciolaria calappa A.A. Olsson, 1934 - (FASCIOLARIIDAE)
- calaritana, Cochlicella calaritana M. Paulucci, 1882 - syn of: Cochlicella conoidea (J.P.R. Draparnaud, 1801) - (COCHLICELLIDAE)
- calaritana, Runcina calaritana G. Colosi, 1915 - syn of: Runcina coronata (J.L.A. Quatrefages, 1844) - (RUNCINIDAE)
- calasaladae, Amandana cisternasi calasaladae (S.G.A. Jaeckel, 1952) - (HYGROMIIDAE)
- calatha, Calliotropis calatha (W.H. Dall, 1927) - (CALLIOTROPIDAE)
- calatha, Segmentina calatha W.H. Benson, 1850 - (PLANORBIDAE)
- calatha, Solariella calatha W.H. Dall, 1927 - syn of: Calliotropis calatha (W.H. Dall, 1927) - (SOLARIELLIDAE)
- calathicolus, Ivoechiton calathicolus Smith & Toomey, 1964 † - (GOTLANDOCHITONIDAE) (FOSSIL)
- calathiscus, Bathydomus calathiscus (R.B. Watson, 1882) - (BUCCINIDAE)
- calathiscus, Lienardia calathiscus (J.C. Melvill & R. Standen, 1896) - (CLATHURELLIDAE)
- calathiscus, Leiostyla calathiscus (R.T. Lowe, 1831) - (LAURIIDAE)
- calathiscus, Mangelia calathiscus J.C. Melvill & R. Standen, 1896 - syn of: Lienardia calathiscus (J.C. Melvill & R. Standen, 1896) - (MANGELIIDAE)
- calathiscus, Turbo calathiscus G. Montagu, 1808 - syn of: Alvania cimex (C. Linnaeus, 1758) - (TURBINIDAE)
- calathoides, Atlantica guerinianus calathoides (R.T. Lowe, 1863) - (DISCIDAE)
- calathus, Aulacofusus calathus (W.H. Dall, 1919) - (BUCCINIDAE)
- calathus, Janulus calathus R.T. Lowe, 1852 - syn of: Janulus stephanophorus (G.P. Deshayes, 1835) - (GASTRODONTIDAE)
- calathus, Rissoa calathus E. Forbes & S.C.T. Hanley, 1850 - syn of: Alvania beanii calathus E. Forbes & S.C.T. Hanley, 1850 - (RISSOIDAE)
- calathus, Alvania calathus F. Nordsieck, 1972 - syn of: Alvania subcalathus (P. Dautzenberg & H. Fischer, 1906) - (RISSOIDAE)
- calathus, Alvania calathus P. Dautzenberg & H. Fischer, 1906 - syn of: Alvania subcalathus (P. Dautzenberg & H. Fischer, 1906) - (RISSOIDAE)
- calathus, Alvania beanii calathus E. Forbes & S.C.T. Hanley, 1850 - (RISSOIDAE)
- Calaurops, Genus Calaurops Whitfield, 1886 (RAPHISTOMATIDAE) (FOSSIL)
- calavardensis, Radix calavardensis (Bukowski, 1896 †) - (LYMNAEIDAE) (FOSSIL)
- Calaxis, Genus Calaxis J.R. Bourguignat, 1887 (FERUSSACIIDAE)
- calbucensis, Tonicia calbucensis H.P. Plate, 1897 - (CHITONIDAE)
- calcadensis, Beddomea calcadensis (W.T. Blanford) - (CAMAENIDAE)
- calcadensis, Tortulosa calcadensis (W.T. Blanford, 1869) - (PUPINIDAE)
- calcanea, Pitar calcanea W.H. Dall, 1903 † - (VENERIDAE) (FOSSIL)
- calcar, Architectonica calcar O.G. Costa, 1861 - syn of: Bolma rugosus (C. Linnaeus, 1767) - (ARCHITECTONICIDAE)
- calcar, Bathyspinula calcar (W.H. Dall, 1908) - (BATHYSPINULIDAE)
- calcar, Spinula calcar W.H. Dall, 1908 - syn of: Bathyspinula calcar (W.H. Dall, 1908) - (BATHYSPINULIDAE)
- calcar, Buccinum calcar (T. Martyn, 1784) - (BUCCINIDAE)
- calcar, Buccinum calcar J.G. Bruguière, 1789 - syn of: Acanthina monodon (P.S. Pallas, 1774) - (BUCCINIDAE)
- calcar, Clifdenia calcar (P. Marshall, 1918 †) - (MITRIDAE) (FOSSIL)
- calcar, Murex calcar L.C. Kiener, 1843 - syn of: Siratus tenuivaricosus (P. Dautzenberg, 1927) - (MURICIDAE)
- calcar, Acanthina calcar J.E. Gray, 1843 - syn of: Acanthina monodon (P.S. Pallas, 1774) - (MURICIDAE)
- calcar, Murex calcar J. de C. Sowerby, 1825 † - syn of: Cretaceomurex calcar J. de C. Sowerby, 1825 † - (MURICIDAE) (FOSSIL)
- calcar, Neilonella calcar W.H. Dall, 1908 - syn of: Bathyspinula calcar (W.H. Dall, 1908) - (NEILONELLIDAE)
- calcar, Leda calcar W.H. Dall, 1908 - syn of: Bathyspinula calcar (W.H. Dall, 1908) - (NUCULANIDAE)
- calcar, Nuculana calcar W.H. Dall, 1908 - syn of: Bathyspinula calcar (W.H. Dall, 1908) - (NUCULANIDAE)
- calcar, Pleurotomaria calcar Münster, 1841 † - syn of: Pachypoma calcar (Münster, 1841 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- calcar, Purpurina calcar Hudleston † - (PURPURINIDAE) (FOSSIL)
- calcar, Cretaceomurex calcar J. de C. Sowerby, 1825 † - (SPINILOMATIDAE) (FOSSIL)
- calcar, Struthiolaria calcar F.W. Hutton, 1885 † - (STRUTHIOLARIIDAE) (FOSSIL)
- calcar, Meiersia calcar (A.V.M.D. D'Orbigny, 1850 †) - (TURBINIDAE) (FOSSIL)
- calcar, Pachypoma calcar (Münster, 1841 †) - (TURBINIDAE) (FOSSIL)
- calcar, Astralium calcar (C. Linnaeus, 1758) - (TURBINIDAE)
- Calcar, syn of: Genus Astralium J.H.F. Link, 1807 (TURBINIDAE)
- calcar laciniatum, Astralium calcar laciniatum J.B.P.A. Lamarck, 1819 - (TURBINIDAE)
- calcara, Coriophora calcara (C.F. Laseron, 1958) - (TRIPHORIDAE)
- calcara, Triphora calcara (C.F. Laseron, 1958) - syn of: Coriophora calcara (C.F. Laseron, 1958) - (TRIPHORIDAE)
- calcarae, Siciliaria calcarae (R.A. Philippi, 1844) - (CLAUSILIIDAE)
- calcarae, Doris calcarae J.B. Vérany, 1846 - syn of: Felimare picta (Schultz in R.A. Philippi, 1836) - (DORIDIDAE)
- calcarae belliemii, Siciliaria calcarae belliemii R.A.M. Brandt, 1961 - (CLAUSILIIDAE)
- calcarae orlandoi, Siciliaria calcarae orlandoi (Libero, A. Reitano & al., 2016) - (CLAUSILIIDAE)
- Calcaraea, syn of: Genus Cochlodesma J.P.Y. Couthouy, 1839 (PERIPLOMATIDAE)
- calcarata, Dimorphosoma calcarata (Sowerby, 1822 †) - (APORRHAIDAE) (FOSSIL)
- calcarata, Bornella calcarata O.A.L. Mörch, 1863 - (BORNELLIDAE)
- calcarata, Zelandiella calcarata J. Marwick, 1931 † - (BUCCINIDAE) (FOSSIL)
- calcarata, Calliotropis calcarata (M.M. Schepman, 1908) - (CALLIOTROPIDAE)
- calcarata, Bathybembix calcarata (M.M. Schepman, 1908) - syn of: Calliotropis calcarata (M.M. Schepman, 1908) - (CALLIOTROPIDAE)
- Calcarata, Genus Calcarata F.P. Jousseaume, 1887 (CANCELLARIIDAE) (FOSSIL)
- calcarata, Calcarata calcarata (G.B. Brocchi, 1814 †) - (CANCELLARIIDAE) (FOSSIL)
- calcarata, Chama calcarata J.B.P.A. Lamarck, 1806 † - (CHAMIDAE) (FOSSIL)
- calcarata, Clavatula calcarata (J.P.S. Grateloup, 1840 †) - (CLAVATULIDAE) (FOSSIL)
- calcarata, Monetaria calcarata J.C. Melvill, 1888 - syn of: Monetaria annulus (C. Linnaeus, 1758) - (CYPRAEIDAE)
- calcarata, Diplommatina calcarata O.F. von Möllendorff, 1897 - (DIPLOMMATINIDAE)
- calcarata, Trochoidea spratti calcarata L. Benoit, 1860 - (HYGROMIIDAE)
- calcarata, Janssenia calcarata (J.P.S. Grateloup, 1833 †) - (MURICIDAE) (FOSSIL)
- calcarata, Cymia calcarata J.P.S. Grateloup, 1833 † - syn of: Janssenia calcarata (J.P.S. Grateloup, 1833 †) - (MURICIDAE) (FOSSIL)
- calcarata, Rostellaria calcarata Sowerby, 1822 † - syn of: Dimorphosoma calcarata (Sowerby, 1822 †) - (ROSTELLARIIDAE) (FOSSIL)
- calcarata basisulcata, Calcarata calcarata basisulcata M.A. Peyrot, 1925 † - (CANCELLARIIDAE) (FOSSIL)
- calcarata francisci, Clavatula calcarata francisci F. Toula, 1910 † - (CLAVATULIDAE) (FOSSIL)
- calcaratus, Drepanochilus calcaratus Sowerby, 1822 † - syn of: Dimorphosoma calcarata (Sowerby, 1822 †) - (APORRHAIDAE) (FOSSIL)
- calcaratus, Pyrula calcaratus S.C.T. Hanley, 1856 - syn of: Volema pyrum (J.F. Gmelin, 1791) - (MELONGENIDAE)
- calcaratus, Tympanotonos calcaratus A. Brongniart, 1823 † - (POTAMIDIDAE) (FOSSIL)
- calcaratus, Spondylus calcaratus E. Forbes, 1846 † - (SPONDYLIDAE) (FOSSIL)
- calcaratus, Trochus calcaratus S.M. Souverbie, 1875 - syn of: Trochus histrio L.A. Reeve, 1842 - (TROCHIDAE)
- calcarea, Anadara trilineata calcarea Grant & H.R. Gale, 1931 † - (ARCIDAE) (FOSSIL)
- calcarea, Barleeia calcarea E.A. Kay, 1979 - (BARLEEIIDAE)
- calcarea, Trichotropis calcarea G.A.W. Thorson, 1944 - syn of: Ariadnaria borealis (W.J. Broderip & G.B. I Sowerby, 1829) - (CAPULIDAE)
- calcarea, Cerion calcarea L. Pfeiffer, 1847 - (CERIONIDAE)
- calcarea, Theba calcarea L. Pfeiffer, 1849 - syn of: Theba pisana (O.F. Müller, 1774) - (HELICIDAE)
- calcarea, Helix calcarea L. Pfeiffer, 1849 - syn of: Theba pisana (O.F. Müller, 1774) - (HELICIDAE)
- calcarea, Arianta arbustorum calcarea D.S. Högberg, 1841 - (HELICIDAE)
- calcarea, Xerotricha calcarea A. Mousson, 1872 - syn of: Xerotricha lancerottensis (P.B. Webb & S. Berthelot, 1833) - (HYGROMIIDAE)
- calcarea, Tropidophora calcarea (G.B. Sowerby, 1843) - (POMATIIDAE)
- calcarea, Scrobicularia calcarea H.C.F. Schumacher, 1815 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- calcarea, Macoma calcarea (J.F. Gmelin, 1792) - (TELLINIDAE)
- calcarea, Tellina calcarea J.F. Gmelin, 1791 - syn of: Macoma calcarea (J.F. Gmelin, 1792) - (TELLINIDAE)
- calcarea, Venus calcarea A.A. Gould, 1850 - syn of: Bassina yatei (J.E. Gray, 1835) - (VENERIDAE)
- calcarea, Venus calcarea R.A. Philippi, 1844 - syn of: Mercenaria campechiensis (J.F. Gmelin, 1791) - (VENERIDAE)
- calcarea dissimilis, Macoma calcarea dissimilis E.C. Von Martens, 1865 - syn of: Macoma calcarea (J.F. Gmelin, 1792) - (TELLINIDAE)
- calcarella, Bathyspinula calcarella (W.H. Dall, 1908) - (BATHYSPINULIDAE)
- calcarella, Leda calcarella W.H. Dall, 1908 - syn of: Bathyspinula calcarella (W.H. Dall, 1908) - (NUCULANIDAE)
- calcarella, Odostomia calcarella P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- calcarelliformis, Volutoconus calcarelliformis F.E. Wells & H. Morrison, 2003 - (VOLUTIDAE)
- calcareous, Malluvium calcareous H.H. Suter, 1909 - syn of: Malluvium calcareum (H.H. Suter, 1909) - (HIPPONICIDAE)
- calcareum, Malluvium calcareum (H.H. Suter, 1909) - (HIPPONICIDAE)
- calcareus, Gemixystus calcareus R. Houart & V. Héros, 2012 - (MURICIDAE)
- calcareus, Neobeliscus calcareus I. von Born, 1778 - syn of: Neobeliscus calcarius (I. von Born, 1778) - (SUBULINIDAE)
- calcaria, Corbula calcaria H.B. Preston, 1907 - syn of: Potamocorbula abbreviata (H.B. Preston, 1907) - (CORBULIDAE)
- calcaria, Potamocorbula calcaria H.B. Preston, 1907 - syn of: Potamocorbula abbreviata (H.B. Preston, 1907) - (CORBULIDAE)
- Calcaria, syn of: Genus Calcarovula J. Cate, 1974 (OVULIDAE)
- Calcariclavis, syn of: Genus Phaedusa H. Adams & A. Adams, 1855 (CLAUSILIIDAE)
- calcarifera, Dimorphosoma calcarifera Kaunhowen, 1891 † - (APORRHAIDAE) (FOSSIL)
- Calcarina, syn of: Subgenus Sphincterochila (Albea) P.M. Pallary, 1909 (SPHINCTEROCHILIDAE)
- calcaris, Graciliala calcaris (B. Wade, 1926 †) - (APORRHAIDAE) (FOSSIL)
- calcaris, Gymnarus calcaris (L.W. Stephenson †) - (PUGNELLIDAE) (FOSSIL)
- calcarius, Ergalatax calcarius R.W. Dunker, 1860 - syn of: Ergalatax contracta (L.A. Reeve, 1846) - (MURICIDAE)
- calcarius, Neobeliscus calcarius (I. von Born, 1778) - (SUBULINIDAE)
- calcarius caxapregana, Neobeliscus calcarius caxapregana (S. Moricand, 1833) - (SUBULINIDAE)
- calcaroides, Angaria calcaroides F.J. Cantraine, 1842 - syn of: Scissurella costata d'Orbigny, 1824 - (ANGARIIDAE)
- Calcarovula, Genus Calcarovula J. Cate, 1974 (OVULIDAE)
- calcata, Pseudorhaphitoma calcata (C. Hedley, 1909) - (MANGELIIDAE)
- Calcatodrillia, Genus Calcatodrillia R.N. Kilburn, 1988 (PSEUDOMELATOMIDAE)
- calcatus, Callochiton calcatus B. Dell'Angelo & S. Palazzi, 1994 - (CALLOCHITONIDAE)
- calceatus, Musculus calceatus (J.C. Melvill & R. Standen, 1907) - (MYTILIDAE)
- calceiformis, Mya calceiformis Phillips, 1829 † - (MYIDAE) (FOSSIL)
- calceiformis, Pleuromya calceiformis B. Phillips, 1875 † - (PLEUROMYIDAE) (FOSSIL)
- Calceochiton, Genus Calceochiton Flower, 1968 (MATTHEVIIDAE) (FOSSIL)
- calceola, Postclymenia calceola W. Korn, 2014 † - (CYMACLYMENIIDAE) (FOSSIL)
- calceola, Corolla calceola (A.E. Verrill, 1880) - (CYMBULIIDAE)
- calceola, Cernuella calceola E. Caziot - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- calceola, Agriopoma calceola Gardner, 1936 † - (VENERIDAE) (FOSSIL)
- calceolata, Corolla calceolata (A.E. Verrill, 1880) - syn of: Corolla calceola (A.E. Verrill, 1880) - (CYMBULIIDAE)
- Calceolata, syn of: Genus Neritilia E.C. Von Martens, 1879 (NERITILIIDAE)
- calceolina, Crepidula calceolina G.P. Deshayes, 1830 - syn of: Crepidula unguiformis J.B.P.A. Lamarck, 1822 - (CALYPTRAEIDAE)
- calceolina, Zeidora calceolina A. Adams, 1860 - (FISSURELLIDAE)
- Calceolina, syn of: Genus Neritilia E.C. Von Martens, 1879 (NERITILIIDAE)
- calceolus, Unio calceolus I. Lea, 1828 - syn of: Alasmidonta viridis C.S. Rafinesque, 1820 - (UNIONIDAE)
- calchaquinus, Bostryx calchaquinus A. Doering, 1879 - (BULIMULIDAE)
- Calchasiceras, Genus Calchasiceras Shimanski, 1957 (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- calciatus, Plesiotriton calciatus J.M. Pacaud, Ledon & Loubry, 2015 † - (CANCELLARIIDAE) (FOSSIL)
- calcibyssata, Juranomia calcibyssata F.T. Fürsich & W. Werner, 1989 † - (ANOMIIDAE) (FOSSIL)
- Calcicanicularia, Genus Calcicanicularia Waterhouse, 1983 (LIMIDAE) (FOSSIL)
- calcicincta, Lienardia calcicincta J.C. Melvill & R. Standen, 1895 - syn of: Hemilienardia calcicincta (J.C. Melvill & R. Standen, 1895) - (CLATHURELLIDAE)
- calcicincta, Mangelia calcicincta J.C. Melvill & R. Standen, 1895 - syn of: Hemilienardia calcicincta (J.C. Melvill & R. Standen, 1895) - (MANGELIIDAE)
- calcicincta, Hemilienardia calcicincta (J.C. Melvill & R. Standen, 1895) - (RAPHITOMIDAE)
- calcicola, Lissachatina calcicola T.E. Crowley & T. Pain, 1961 - (ACHATINIDAE)
- calcicola, Trishoplita calcicola J.T. Kuroda - (BRADYBAENIDAE)
- calcicola, Discoconulus calcicola J.T. Kuroda, 1954 - (EUCONULIDAE)
- calcicola, Nucula calcicola D.R. Moore, 1977 - (NUCULIDAE)
- calcicola, Paravitrea calcicola H.B. Baker, 1931 - (ZONITIDAE)
- calcifer, Bellerophon calcifer Cleland, 1900 † - syn of: Groomodiscus calcifer (Cleland, 1900 †) - (BELLEROPHONTIDAE) (FOSSIL)
- calcifer, Lithophaga calcifer T. Iredale, 1939 - (MYTILIDAE)
- calcifer, Spondylus calcifer Carpenter, 1857 - (SPONDYLIDAE)
- calcifer, Groomodiscus calcifer (Cleland, 1900 †) - (TROPIDODISCIDAE) (FOSSIL)
- calcifera, Lophospira calcifera R.P. Whitfield, 1889 † - (LOPHOSPIRIDAE) (FOSSIL)
- calcifera, Pleurotomaria calcifera Billings, 1859 † - (PLEUROTOMARIIDAE) (FOSSIL)
- calcifera, Ribeiria calcifera Billings, 1865 † - (RIBEIRIIDAE) (FOSSIL)
- calcifera, Tellina calcifera Dufour, 1881 † - (TELLINIDAE) (FOSSIL)
- calcifera, Sarasinula calcifera H.R. Simroth, 1914 - syn of: Sarasinula linguaeformis (C.G. Semper, 1885) - (VERONICELLIDAE)
- calciferiforme, Pycnoceras calciferiforme A. Hyatt, 1894 † - (ESTONIOCERATIDAE) (FOSSIL)
- calciferum, Litoceras calciferum (Billings, 1865 †) - (TROCHOLITIDAE) (FOSSIL)
- calciferus, Euomphalus calciferus R.P. Whitfield, 1889 † - syn of: Ecculiomphalus calciferus (R.P. Whitfield, 1889 †) - (EUOMPHALIDAE) (FOSSIL)
- calciferus, Ecculiomphalus calciferus (R.P. Whitfield, 1889 †) - (OPHILETIDAE) (FOSSIL)
- calciferus, Subulites calciferus Billings, 1859 † - (SUBULITIDAE) (FOSSIL)
- calciformis, Pleuromya calciformis (Phillips) † - (PLEUROMYIDAE) (FOSSIL)
- calcigena, Discula calcigena (R.T. Lowe, 1831) - (HYGROMIIDAE)
- calcigena babozae, Discula calcigena babozae C.de Paiva, 1866 - syn of: Discula calcigena barbozae (C.de Paiva, 1866) - (HYGROMIIDAE)
- calcigena barbozae, Discula calcigena barbozae (C.de Paiva, 1866) - (HYGROMIIDAE)
- calcigena discina, Discula calcigena discina R.T. Lowe, 1852 - (HYGROMIIDAE)
- calcigena gomesiana, Discula calcigena gomesiana C.de Paiva, 1866 - (HYGROMIIDAE)
- calcigena maxima, Discula calcigena maxima G. Mandahl-Barth, 1950 - (HYGROMIIDAE)
- Calcimitra, Genus Calcimitra Y.F. Huang, 2011 (MITRIDAE)
- calcinella, Lavigno calcinella C.A. Récluz in J.C. Chenu, 1845 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- Calcinella, syn of: Genus Scrobicularia H.C.F. Schumacher, 1815 (SCROBICULARIIDAE)
- calcinella gallobritannica, Scrobicularia calcinella gallobritannica C.A. Récluz in J.C. Chenu, 1843 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- calcinella intermedia, Scrobicularia calcinella intermedia C.A. Récluz in J.C. Chenu, 1843 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- calcinella mediterranea, Scrobicularia calcinella mediterranea C.A. Récluz in J.C. Chenu, 1843 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- calcinella oceanica, Scrobicularia calcinella oceanica C.A. Récluz in J.C. Chenu, 1843 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- Calciolata, syn of: Genus Neritilia E.C. Von Martens, 1879 (NERITILIIDAE)
- calciphila, Fijianella calciphila C.M. Cooke & W.J. Clench, 1943 - (ASSIMINEIDAE)
- calciphila, Exiligada calciphila F. Criscione, A. Law & F. Köhler, 2012 - (CAMAENIDAE)
- calcipicta, Bursa calcipicta W.H. Dall, 1908 - syn of: Crossata ventricosa calcipicta (W.H. Dall, 1908) - (BURSIDAE)
- calcipicta, Bursa calcipicta A.M. Keen, 1958 - syn of: Bursa rugosa (G.B. II Sowerby, 1835) - (BURSIDAE)
- calcipicta, Crossata ventricosa calcipicta (W.H. Dall, 1908) - (BURSIDAE)
- Calcisuccinea, Subgenus Succinea (Calcisuccinea) H.A. Pilsbry, 1948 (SUCCINEIDAE)
- calcitica, Neritaria calcitica E.A.L. Kittl, 1894 † - (NERITARIIDAE) (FOSSIL)
- calcitrapa, Poirieria calcitrapa (J.B.P.A. Lamarck, 1803 †) - (MURICIDAE) (FOSSIL)
- Calcitrapessa, Subgenus Pteropurpura (Calcitrapessa) S.S. Berry, 1959 (MURICIDAE)
- calcitrapoides, Batillaria calcitrapoides (J.B.P.A. Lamarck, 1804 †) - (BATILLARIIDAE) (FOSSIL)
- calcitrapoides, Paraglans calcitrapoides (J.B.P.A. Lamarck, 1805 †) - (CARDITIDAE) (FOSSIL)
- calcopercula, Malarinia calcopercula K.C. Emberton, 1994 - (DIPLOMMATINIDAE)
- calculifera, Iniforis calculifera (A.A. Gould, 1861) - (TRIPHORIDAE)
- calculifera, Xenophora calculifera L.A. Reeve, 1843 - syn of: Stellaria chinensis (R.A. Philippi, 1841) - (XENOPHORIDAE)
- calculifera, Stellaria calculifera L.A. Reeve, 1843 - syn of: Stellaria chinensis (R.A. Philippi, 1841) - (XENOPHORIDAE)
- calculiforme, Manticoceras calculiforme A.H.E. Beyrich, 1837 † - syn of: Maternoceras calculiformis (A.H.E. Beyrich, 1837 †) - (GEPHUROCERATIDAE) (FOSSIL)
- calculiformis, Ammonites calculiformis A.H.E. Beyrich, 1837 † - syn of: Maternoceras calculiformis (A.H.E. Beyrich, 1837 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- calculiformis, Discohelix calculiformis R.W. Dunker, 1847 † - (DISCOHELICIDAE) (FOSSIL)
- calculiformis, Maternoceras calculiformis (A.H.E. Beyrich, 1837 †) - (GEPHUROCERATIDAE) (FOSSIL)
- calculiformis, Anisus calculiformis (C.L.F. von Sandberger, 1874) - (PLANORBIDAE)
- calculiformis crassoides, Maternoceras calculiformis crassoides (Matern, 1931 †) - (GEPHUROCERATIDAE) (FOSSIL)
- calculiformis crassum, Maternoceras calculiformis crassum Wedekind, 1931 † - syn of: Maternoceras calculiformis crassoides (Matern, 1931 †) - (GEPHUROCERATIDAE) (FOSSIL)
- calculina, Cernuella calculina É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- calculosa, Coneuplecta calculosa (A.A. Gould, 1852) - (EUCONULIDAE)
- calculosa, Helix calculosa A.A. Gould, 1852 - syn of: Coneuplecta calculosa (A.A. Gould, 1852) - (HELICIDAE)
- calculosum, Cerithium calculosum B. de Basterot, 1825 † - (CERITHIIDAE) (FOSSIL)
- calculosum basterotium, Cerithium calculosum basterotium J.P.S. Grateloup, 1832 † - (CERITHIIDAE) (FOSSIL)
- calculus, Kalidos calculus E. Fischer-Piette & J. Bedoucha, 1966 - (ARIOPHANTIDAE)
- calculus, Persicula calculus (J.H. Redfield, 1870) - (CYSTISCIDAE)
- calculus, Discohelix calculus C.L.F. von Sandberger, 1870 † - (DISCOHELICIDAE) (FOSSIL)
- calculus, Helix calculus R.T. Lowe, 1854 - (HELICIDAE)
- calculus, Caseolus calculus (R.T. Lowe, 1854) - (HYGROMIIDAE)
- calculus, Marginella calculus J.H. Redfield, 1870 - syn of: Persicula calculus (J.H. Redfield, 1870) - (MARGINELLIDAE)
- calculus, Protonerita calculus E.A.L. Kittl, 1894 † - syn of: Neritaria orbiculata (Stoppani, 1858 †) - (NERITIDAE) (FOSSIL)
- calculus, Microstagon calculus L.A. Reeve, 1850 - syn of: Diplodonta obliqua R.A. Philippi, 1846 - (UNGULINIDAE)
- calculus, Felaniella calculus L.A. Reeve, 1850 - syn of: Diplodonta obliqua R.A. Philippi, 1846 - (UNGULINIDAE)
- caldania, Oliva caldania P.L. Duclos, 1835 - syn of: Oliva brettinghami F.G. Bridgman, 1909 - (OLIVIDAE)
- caldarium, Spinaxinus caldarium Oliver & Rodrigues, 2017 - (THYASIRIDAE)
- caldeirarum, Leptaxis caldeirarum P.M.A. Morelet & H. Drouët, 1857 - (HYGROMIIDAE)
- caldera, Cylindrotruncatum caldera S. Kiel & K. Bandel, 2001 † - (ACTEOCINIDAE) (FOSSIL)
- calderaensis, Bostryx calderaensis J.F. Araya, 2015 - (BULIMULIDAE)
- calderaensis, Stephacharopa calderaensis F.A.W. Miquel & J.F. Araya, 2013 - (CHAROPIDAE)
- calderense, Calliostoma calderense B.M. Landau & F. Da Silva, 2010 † - (CALLIOSTOMATIDAE) (FOSSIL)
- calderensis, Hiatella calderensis T.A. Conrad, 1855 - syn of: Petricola rugosa Sowerby, 1834 - (HIATELLIDAE)
- calderensis, Amandana cisternasi calderensis (L. Gasull, 1963) - (HYGROMIIDAE)
- calderinii, Charpentieria calderinii M. Lessona, 1880 - syn of: Charpentieria dyodon thomasiana (H.C. Küster, 1850) - (CLAUSILIIDAE)
- calderoni, Euthria calderoni E. Rolán, 1985 - (BUCCINIDAE)
- calderoni, Hydrobia calderoni Royo Gómez, 1922 † - (HYDROBIIDAE) (FOSSIL)
- calderoni, Heterotrigonia calderoni (R. Garcia del Castillo & Aguilera †) - (MEGATRIGONIIDAE) (FOSSIL)
- calderoni, Trigonia calderoni R. Garcia del Castillo & Aguilera † - syn of: Heterotrigonia calderoni (R. Garcia del Castillo & Aguilera †) - (TRIGONIIDAE) (FOSSIL)
- calderoni, Potomida calderoni W. Kobelt, 1887 - syn of: Potomida littoralis umbonata E.A. Rossmässler, 1844 - (UNIONIDAE)
- calderonii, Mediterranea calderonii C.A. Westerlund, 1890 - syn of: Mediterranea hydatina (E.A. Rossmässler, 1838) - (OXYCHILIDAE)
- Caldicochlea, Genus Caldicochlea W.F. Ponder, 1997 (HYDROBIIDAE)
- Caldivitrina, syn of: Subgenus Semilimax (Calidivitrina) H.A. Pilsbry, 1919 (VITRINIDAE)
- Caldukia, Genus Caldukia R.F. Burn & M.C. Miller, 1969 (PROCTONOTIDAE)
- caldwelli, Ctenophila caldwelli (W.H. Benson, 1859) - (HELICARIONIDAE)
- Caldwellia, Genus Caldwellia H. Adams, 1873 (HELICARIONIDAE)
- caldwellii, Barynaias caldwellii (I. Lea, 1858) - (UNIONIDAE)
- caleata, Brokenriveria caleata (G.A. Goldfuss, 1844 †) - (PLATYCERATIDAE) (FOSSIL)
- Caledoconcha, Genus Caledoconcha M. Haase & P. Bouchet, 1998 (HYDROBIIDAE)
- Caledogonia, Genus Caledogonia Freneix & Avias, 1977 (MYOPHORIIDAE) (FOSSIL)
- caledonensis, Tutufella caledonensis F.P. Jousseaume, 1881 - syn of: Tutufella rubeta (C. Linnaeus, 1758) - (BURSIDAE)
- caledonensis, Lioconcha caledonensis M.E. Harte & K.L. Lamprell, 1999 - (VENERIDAE)
- caledonia, Zebina caledonia (Tate) † - (ZEBINIDAE) (FOSSIL)
- caledonica, Anthracosia caledonica Trueman & Weir, 1936 † - (ANTHRACOSIIDAE) (FOSSIL)
- caledonica, Omphalotropis caledonica (J.C.H. Crosse, 1872) - (ASSIMINEIDAE)
- caledonica, Basterotia caledonica (P. Fischer, 1886) - (BASTEROTIIDAE)
- caledonica, Bornella caledonica J.C.H. Crosse, 1875 - syn of: Bornella stellifer (A. Adams & L.A. Reeve in A. Adams, 1848) - (BORNELLIDAE)
- caledonica, Pseudofulvia caledonica E. Vidal & L. Kirkendale, 2007 - (CARDIIDAE)
- caledonica, Clathropsis caledonica Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- caledonica, Pararhytida caledonica (J.C.H. Crosse, 1868) - (CHAROPIDAE)
- caledonica, Aoteatilia caledonica K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- caledonica, Cryptoplax caledonica A. de Rochebrune, 1882 - syn of: Cryptoplax larvaeformis (E.J. Burrow, 1815) - (CRYPTOPLACIDAE)
- caledonica, Erronea caledonica G.S. Coen, 1949 - syn of: Erronea caurica (C. Linnaeus, 1758) - (CYPRAEIDAE)
- caledonica, Lyncina lynx caledonica J.C.H. Crosse, 1869 - (CYPRAEIDAE)
- caledonica, Crithe caledonica F. Boyer, 2003 - (CYSTISCIDAE)
- caledonica, Parvioris caledonica L.J. Morlet, 1881 - syn of: Parvioris fulvescens (A. Adams, 1866) - (EULIMIDAE)
- caledonica, Eulima caledonica P.M.A. Morelet, 1881 - syn of: Parvioris fulvescens (A. Adams, 1866) - (EULIMIDAE)
- caledonica, Peristernia caledonica (S.A.A. Petit De La Saussaye, 1851) - (FASCIOLARIIDAE)
- caledonica, Cecilioides caledonica (J.C.H. Crosse, 1867) - (FERUSSACIIDAE)
- caledonica, Glycymeris caledonica J.C.H. Crosse, 1880 - syn of: Glycymeris holoserica (L.A. Reeve, 1843) - (GLYCYMERIDIDAE)
- caledonica, Iravadia caledonica (J.C.H. Crosse, 1872) - (IRAVADIIDAE)
- caledonica, Eucithara caledonica (E.A. Smith, 1882) - (MANGELIIDAE)
- caledonica, Protoginella caledonica F. Boyer, 2001 - (MARGINELLIDAE)
- caledonica, Hydroginella caledonica (F.P. Jousseaume, 1877) - (MARGINELLIDAE)
- caledonica, Eumitra caledonica P. Lozouet, 1991 - (MITRIDAE)
- caledonica, Mitra caledonica C.A. Récluz, 1853 - syn of: Nebularia chrysalis L.A. Reeve, 1844 - (MITRIDAE)
- caledonica, Attiliosa caledonica (F.P. Jousseaume, 1881) - (MURICIDAE)
- caledonica, Ponderia caledonica R. Houart, 1988 - (MURICIDAE)
- caledonica, Attiliosa caledonica F.P. Jousseaume, 1881 - syn of: Attiliosa caledonica (F.P. Jousseaume, 1881) - (MURICIDAE)
- caledonica, Vayssierea caledonica J.J. Risbec, 1928 - (OKADAIIDAE)
- caledonica, Diminovula caledonica (J.C.H. Crosse, 1872) - (OVULIDAE)
- caledonica, Pseudosimnia caledonica J.C.H. Crosse, 1872 - syn of: Diminovula caledonica (J.C.H. Crosse, 1872) - (OVULIDAE)
- caledonica, Philine caledonica J.J. Risbec, 1951 - (PHILINIDAE)
- caledonica, Terebralia palustris caledonica F.P. Jousseaume, 1884 - (POTAMIDIDAE)
- caledonica, Psammobia caledonica J.C.H. Crosse - syn of: Gari squamosa (J.B.P.A. Lamarck, 1818) - (PSAMMOBIIDAE)
- caledonica, Babella caledonica Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- caledonica, Pyrgulina caledonica Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- caledonica, Ringicula caledonica L.J. Morlet, 1880 - (RINGICULIDAE)
- caledonica, Rissoa caledonica J.C.H. Crosse, 1872 - syn of: Iravadia caledonica (J.C.H. Crosse, 1872) - (RISSOIDAE)
- caledonica, Scaliola caledonica J.C.H. Crosse, 1870 - (SCALIOLIDAE)
- caledonica, Halystina caledonica B.A. Marshall, 1991 - (SEGUENZIIDAE)
- caledonica, Leucorhynchia caledonica J.C.H. Crosse, 1867 - (SKENEIDAE)
- caledonica, Hemistomia caledonica J.C.H. Crosse, 1872 - syn of: Omphalotropis caledonica (J.C.H. Crosse, 1872) - (TATEIDAE)
- caledonica, Oxymeris caledonica (G.B. III Sowerby, 1909) - (TEREBRIDAE)
- caledonica, Terebra caledonica G.B. III Sowerby, 1909 - syn of: Oxymeris caledonica (G.B. III Sowerby, 1909) - (TEREBRIDAE)
- caledonica, Turbinella caledonica S.A.A. Petit De La Saussaye, 1851 - syn of: Peristernia ustulata (L.A. Reeve, 1847) - (TURBINELLIDAE)
- caledonica, Pleurotoma caledonica E.A. Smith, 1882 - syn of: Eucithara caledonica (E.A. Smith, 1882) - (TURRIDAE)
- caledonica, Tapes caledonica A.C. Bernardi, 1856 - syn of: Marcia japonica (J.F. Gmelin, 1791) - (VENERIDAE)
- caledonica djiboutiensis, Basterotia caledonica djiboutiensis H. Fischer, 1901 - syn of: Basterotia arcula J.C. Melvill, 1898 - (BASTEROTIIDAE)
- caledonicum, Ceratosoma caledonicum P. Fischer, 1876 - syn of: Ceratosoma trilobatum (J.E. Gray, 1827) - (CHROMODORIDIDAE)
- caledonicum, Dentalium caledonicum V. Scarabino, 1995 - (DENTALIIDAE)
- caledonicum, Prunum caledonicum T. Cossignani, 2001 - (MARGINELLIDAE)
- caledonicum, Neolepton caledonicum C. Salas & S. Gofas, 1998 - (NEOLEPTONIDAE)
- caledonicus, Placostylus caledonicus S.A.A. Petit De La Saussaye, 1845 - (BOTHRIEMBRYONTIDAE)
- caledonicus, Bulimus caledonicus S.A.A. Petit De La Saussaye, 1845 - syn of: Placostylus caledonicus S.A.A. Petit De La Saussaye, 1845 - (BULIMULIDAE)
- caledonicus, Tutufa caledonicus F.P. Jousseaume, 1881 - syn of: Tutufella rubeta (C. Linnaeus, 1758) - (BURSIDAE)
- caledonicus, Bathyfautor caledonicus B.A. Marshall, 1995 - (CALLIOSTOMATIDAE)
- caledonicus, Conus caledonicus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Tenorioconus cedonulli (C. Linnaeus, 1767) - (CONIDAE)
- caledonicus, Leptotrophon caledonicus R. Houart, 1995 - (MURICIDAE)
- caledonicus, Fossarus caledonicus J.C.H. Crosse, 1874 - (PLANAXIDAE)
- caledonicus, Pleurobranchus caledonicus J.J. Risbec, 1928 - (PLEUROBRANCHIDAE)
- caledonicus, Mikadotrochus caledonicus (P. Bouchet & B. Métivier, 1982) - (PLEUROTOMARIIDAE)
- caledonicus, Circuitus caledonicus Rubio & Rolán, 2017 - (TORNIDAE)
- caledonicus auriculata, Placostylus caledonicus auriculata P. Dautzenberg & J.L. Bouge, 1923 - syn of: Placostylus caledonicus S.A.A. Petit De La Saussaye, 1845 - (BOTHRIEMBRYONTIDAE)
- caledonicus edentula, Bulimus caledonicus edentula J.W. Brazier, 1881 - syn of: Placostylus caledonicus S.A.A. Petit De La Saussaye, 1845 - (BULIMULIDAE)
- Caledoniella, Genus Caledoniella S.M. Souverbie, 1869 (VELUTINIDAE)
- caledoniense, Tryblidium caledoniense Lamont † - (TRYBLIDIIDAE) (FOSSIL)
- caledoniensis, Plagiostropha caledoniensis F.E. Wells, 1995 - (DRILLIIDAE)
- caledoniensis, Emoda caledoniensis W.J. Clench & E.R. Jacobson, 1971 - (HELICINIDAE)
- caledoniensis, Plethospira caledoniensis Longst, 1924 † - (MURCHISONIIDAE) (FOSSIL)
- Caleites, syn of: Genus Polymorphites Haug , 1887 (POLYMORPHITIDAE) (FOSSIL)
- calena, Alabina calena W.H. Dall, 1919 - syn of: Lirobittium rugatum (P.P. Carpenter, 1864) - (CERITHIIDAE)
- calena, Finella calena W.H. Dall, 1919 - syn of: Lirobittium rugatum (P.P. Carpenter, 1864) - (SCALIOLIDAE)
- calendalis, Pyrgulina calendalis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- calendyma, Otala calendyma J.R. Bourguignat, 1864 - syn of: Otala punctata (O.F. Müller, 1774) - (HELICIDAE)
- calendymus, Limax calendymus J.R. Bourguignat, 1859 - syn of: Limacus flavus (C. Linnaeus, 1758) - (LIMACIDAE)
- calensis, Hypselodoris calensis L.S.R. Bergh, 1879 - syn of: Felimare californiensis (L.S.R. Bergh, 1879) - (CHROMODORIDIDAE)
- calensis, Leptaxis nivosa calensis R.A. Bank, K. Groh & T.E.J. Ripken, 2002 - (HYGROMIIDAE)
- calensis, Polymorphites calensis (Faraoni & al., 1996 †) - (POLYMORPHITIDAE) (FOSSIL)
- calensis, Caleites calensis Faraoni & al., 1996 † - syn of: Polymorphites calensis (Faraoni & al., 1996 †) - (POLYMORPHITIDAE) (FOSSIL)
- caleocia, Amaurellina caleocia E.H. Vokes, 1939 † - (AMPULLINIDAE) (FOSSIL)
- caleocius, Conus caleocius Vokes, 1939 † - (CONIDAE) (FOSSIL)
- calepii, Iglica calepii Niero & Pezzoli, 2016 - (HYDROBIIDAE)
- calepii, Bythiospeum calepii E. Pezzoli - (HYDROBIIDAE)
- caleptra, Hudlestoniella caleptra J. Gründel, 1975 † - (PSEUDOMELANIIDAE) (FOSSIL)
- calesi, Longchaeus calesi P. Bartsch, 1955 - syn of: Longchaeus suturalis (H.C. Lea, 1843) - (PYRAMIDELLIDAE)
- caleta, Spisula caleta A.A. Olsson, 1928 † - (MACTRIDAE) (FOSSIL)
- caleta, Turritella caleta A.A. Olsson, 1931 † - (TURRITELLIDAE) (FOSSIL)
- caletae, Alia caletae H.B. Preston, 1915 - syn of: Alia unifasciata (G.B. I Sowerby, 1832) - (COLUMBELLIDAE)
- caletanum, Aspidoceras caletanum (Oppel, 1863 †) - (ASPIDOCERATIDAE) (FOSSIL)
- caletria, Clathurella caletria J.C. Melvill & R. Standen, 1896 - syn of: Kermia caletria (J.C. Melvill & R. Standen, 1896) - (CLATHURELLIDAE)
- caletria, Kermia caletria (J.C. Melvill & R. Standen, 1896) - (RAPHITOMIDAE)
- calfius, Murex calfius Š. Brusina, 1870 - syn of: Cumia reticulata (H.M.D. de Blainville, 1829) - (MURICIDAE)
- calhetae, Africonus calhetae (E. Rolán, 1990) - (CONIDAE)
- calhetinensis, Africonus calhetinensis T. Cossignani & R. Fiadeiro, 2014 - (CONIDAE)
- calhounensis, Heliacus calhounensis G. Schmelz, 2001 † - (ARCHITECTONICIDAE) (FOSSIL)
- calhounensis, Trona calhounensis L. Dolin, 1991 † - (CYPRAEIDAE) (FOSSIL)
- calhounensis, Persicula calhounensis C.J. Maury, 1910 † - (CYSTISCIDAE) (FOSSIL)
- calhounensis, Lucinisca calhounensis W.H. Dall, 1903 † - (LUCINIDAE) (FOSSIL)
- calhounensis, Mitra calhounensis G. Schmelz, 2001 † - (MITRIDAE) (FOSSIL)
- calhounensis, Murexiella calhounensis E.H. Vokes, 1968 † - (MURICIDAE) (FOSSIL)
- calhounensis, Pterotyphis calhounensis R.L. Gertman, 1969 † - (MURICIDAE) (FOSSIL)
- calhounensis, Oliva waltoniana calhounensis Drez, 1981 - (OLIVIDAE)
- calhounensis, Macoma calhounensis W.H. Dall, 1900 † - (TELLINIDAE) (FOSSIL)
- Calhounoceras, Genus Calhounoceras Troedsson, 1926 (ACTINOCERIDA (UNASSIGNED)) (FOSSIL)
- calia, Rissoina calia P. Bartsch, 1915 - (RISSOINIDAE)
- Caliagaleodea, syn of: Genus Galeodea J.H.F. Link, 1807 (CASSIDAE)
- caliana, Scissurella caliana W.H. Dall, 1919 - (SCISSURELLIDAE)
- caliana, Seguenzia caliana W.H. Dall, 1919 - (SEGUENZIIDAE)
- calianus, Tornus calianus (W.H. Dall, 1919) - (TORNIDAE)
- calias, Sophina calias (W.H. Benson, 1859) - (ARIOPHANTIDAE)
- Calibanus, Genus Calibanus A.J. Da Motta, 1991 (CONIDAE)
- Calibasis, Subgenus Juga (Calibasis) J.D. Taylor, 1966 (SEMISULCOSPIRIDAE)
- Calicantharus, Genus Calicantharus Clark, 1938 (BUCCINIDAE) (FOSSIL)
- Caliceras, syn of: Genus Arionoceras Barskov, 1966 (ARIONOCERATIDAE) (FOSSIL)
- calicula, Patella calicula C.C. Li, 1930 - syn of: Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- caliculaeformis, Cardita caliculaeformis G.P. Deshayes in L. Maillard, 1863 - (CARDITIDAE)
- caliculata, Opanara caliculata G.A. Solem, 1976 - (ENDODONTIDAE)
- caliculatus, Ancylus caliculatus J.R. Bourguignat, 1862 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- calida, Hendersonia calida (C.D. Weinland, 1862) - (HELICINIDAE)
- calida, Spiralix calida J. Corbella, G. Guillén, L. Prats, A. Tarruella & D.M. Alba, 2014 - (MOITESSIERIIDAE)
- calideum, Epitonium calideum (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- calidimaris, Haplocochlias calidimaris (H.A. Pilsbry & J.T.L. McGinty, 1945) - (SKENEIDAE)
- Calidivitrina, Subgenus Semilimax (Calidivitrina) H.A. Pilsbry, 1919 (VITRINIDAE)
- Calidviana, Genus Calidviana F.C. Baker, 1954 (HELICINIDAE)
- Caliendrula, Genus Caliendrula R.N. Kilburn, 1985 (CLAVATULIDAE)
- caliendrum, Vexillum caliendrum (J.C. Melvill & R. Standen, 1901) - (COSTELLARIIDAE)
- caliendrum, Costellaria caliendrum J.C. Melvill & R. Standen, 1901 - syn of: Vexillum caliendrum (J.C. Melvill & R. Standen, 1901) - (COSTELLARIIDAE)
- Caliendrum, Genus Caliendrum Caliendrum (PLETHOSPIRIDAE) (FOSSIL)
- Califadesma, Genus Califadesma Saul, 1989 (MESODESMATIDAE) (FOSSIL)
- califeroides, Latiaxis califeroides T. Shikama, 1966 - syn of: Babelomurex cariniferoides (T. Shikama, 1966) - (MURICIDAE)
- California, syn of: Genus Volvarina R.B. Hinds, 1844 (MARGINELLIDAE)
- californiae, Cerithium californiae G.B. II Sowerby, 1855 - (CERITHIIDAE)
- californiana, Dimya californiana S.S. Berry, 1936 - (DIMYIDAE)
- californiana, Rimula californiana S.S. Berry, 1964 - (FISSURELLIDAE)
- californiana, Haliotis californiana A. Valenciennes, 1831 - syn of: Haliotis rufescens W.J. Swainson, 1822 - (HALIOTIDAE)
- californiana, Nassa californiana R. Arnold, 1903 - syn of: Nassarius delosi (W.P. Woodring, 1946) - (NASSARIIDAE)
- californiana, Opisthoteuthis californiana S.S. Berry, 1949 - (OPISTHOTEUTHIDAE)
- californiana, Sanguinolaria californiana T.A. Conrad, 1837 - syn of: Macoma balthica (C. Linnaeus, 1758) - (PSAMMOBIIDAE)
- californiana, Popenoella californiana (Packard, 1921) † - (STEINMANELLIDAE) (FOSSIL)
- californiana, Pseudopusula californiana (J.E. Gray, 1827) - (TRIVIIDAE)
- californiana, Pusula californiana (J.E. Gray, 1827) - syn of: Pseudopusula californiana (J.E. Gray, 1827) - (TRIVIIDAE)
- californiana, Pitar californiana (T.A. Conrad, 1835 †) - (VENERIDAE) (FOSSIL)
- californiana, Volutilithes californiana T.A. Conrad, 1856 † - (VOLUTIDAE) (FOSSIL)
- californianum, Cardium californianum T.A. Conrad, 1837 - syn of: Clinocardium nuttallii (T.A. Conrad, 1837) - (CARDIIDAE)
- californianum, Clinocardium californianum T.A. Conrad, 1837 - syn of: Clinocardium nuttallii (T.A. Conrad, 1837) - (CARDIIDAE)
- californianus, Mytilus californianus T.A. Conrad, 1837 - (MYTILIDAE)
- californianus, Demondia californianus (T.A. Conrad, 1856 †) - (NASSARIIDAE) (FOSSIL)
- californianus, Tagelus californianus (T.A. Conrad, 1837) - (SOLECURTIDAE)
- californica, Aclis californica P. Bartsch, 1927 - (ACLIDIDAE)
- californica, Ancilla californica J.G. Cooper, 1894 † - syn of: Oliverato californica J.G. Cooper, 1894 † - (ANCILLARIIDAE) (FOSSIL)
- californica, Placunanomia californica R. Arnold, 1909 † - (ANOMIIDAE) (FOSSIL)
- californica, Aplysia californica J.G. Cooper, 1863 - (APLYSIIDAE)
- californica, Dolabella californica R.E.C. Stearns, 1877 - (APLYSIIDAE)
- californica, Latiala californica (W.M. Gabb, 1864 †) - (APORRHAIDAE) (FOSSIL)
- californica, Arene californica W.H. Dall, 1908 - (ARENEIDAE)
- californica, Armina californica (J.G. Cooper, 1863) - (ARMINIDAE)
- californica, Angustassiminea californica (G.W. Tryon, 1865) - (ASSIMINEIDAE)
- californica, Assiminea californica (G.W. Tryon, 1865) - syn of: Angustassiminea californica (G.W. Tryon, 1865) - (ASSIMINEIDAE)
- californica, Neocrassina californica (Stanton, 1895 †) - (ASTARTIDAE) (FOSSIL)
- californica, Barleeia californica P. Bartsch, 1920 - (BARLEEIIDAE)
- californica, Basterotia californica J.W. Durham, 1950 - (BASTEROTIIDAE)
- californica, Crossata ventricosa californica (W.J. Broderip, 1833) - (BURSIDAE)
- californica, Crepidula californica G.W. Tryon, 1886 - syn of: Bostrycapulus aculeatus (J.F. Gmelin, 1791) - (CALYPTRAEIDAE)
- californica, Admete californica (W.H. Dall, 1908) - (CANCELLARIIDAE)
- californica, Cyclocardia californica W.H. Dall, 1903 † - (CARDITIDAE) (FOSSIL)
- californica, Cardita californica G.P. Deshayes, 1854 - syn of: Carditamera affinis californica (G.P. Deshayes, 1854) - (CARDITIDAE)
- californica, Carditamera affinis californica (G.P. Deshayes, 1854) - (CARDITIDAE)
- californica, Galeodea californica Clark, 1942 † - (CASSIDAE) (FOSSIL)
- californica, Alabina californica (W.H. Dall & P. Bartsch, 1901) - (CERITHIIDAE)
- californica, Clava californica W.H. Dall, 1919 - syn of: Cerithium gemmatum R.B. Hinds, 1844 - (CERITHIIDAE)
- californica, Arcinella californica W.H. Dall, 1903 - (CHAMIDAE)
- californica, Leconteia californica A. Hyatt & Smith, 1905 † - (CLIONITITIDAE) (FOSSIL)
- californica, Anachis californica L.A. Reeve, 1859 - syn of: Anachis terpsichore (J. de C. Sowerby, 1822) - (COLUMBELLIDAE)
- californica, Cardiomya californica W.H. Dall, 1886 - syn of: Cardiomya pectinata (Carpenter, 1865) - (CUSPIDARIIDAE)
- californica, Cylindrobulla californica I. Hamatani, 1971 - syn of: Ascobulla californica (I. Hamatani, 1971) - (CYLINDROBULLIDAE)
- californica, Diaphana californica W.H. Dall, 1919 - (DIAPHANIDAE)
- californica, Dimya californica S.S. Berry, 1936 - syn of: Dimya californiana S.S. Berry, 1936 - (DIMYIDAE)
- californica, Lyratoherpia californica (H. Heath, 1911) - (DONDERSIIDAE)
- californica, Eulima californica P. Bartsch, 1917 - syn of: Hypermastus randolphi (E.G. Vanatta, 1900) - (EULIMIDAE)
- californica, Strombiformis californica P. Bartsch, 1917 - syn of: Hypermastus randolphi (E.G. Vanatta, 1900) - (EULIMIDAE)
- californica, Melanella californica P. Bartsch, 1917 - syn of: Hypermastus randolphi (E.G. Vanatta, 1900) - (EULIMIDAE)
- californica, Peristernia californica A. Adams, 1853 - syn of: Leucozonia nassa (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- californica, Leucozonia californica A. Adams, 1853 - syn of: Leucozonia nassa (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- californica, Megathura californica H.A. Pilsbry - syn of: Megathura crenulata (G.B. I Sowerby, 1825) - (FISSURELLIDAE)
- californica, Flabellina californica (L.S.R. Bergh, 1904) - (FLABELLINIDAE)
- californica, Hancockia californica F.M. MacFarland, 1923 - (HANCOCKIIDAE)
- californica, Hiatella californica T.A. Conrad, 1837 - syn of: Petricola carditoides (T.A. Conrad, 1837) - (HIATELLIDAE)
- californica, Hydrobia californica G.W. Tryon, 1865 - (HYDROBIIDAE)
- californica, Icanotia californica Saul & R.L. Squires, 2006 † - (ICANOTIIDAE) (FOSSIL)
- californica, Neaeromya californica (W.H. Dall, 1899) - (LASAEIDAE)
- californica, Orobitella californica W.H. Dall, 1899 - syn of: Neaeromya californica (W.H. Dall, 1899) - (LASAEIDAE)
- californica, Nuttallina californica (L.A. Reeve, 1847 ex Nuttall MS) - (LEPIDOCHITONIDAE)
- californica, Limatula californica F.R. Bernard, 1988 - syn of: Limatula saturna F.R. Bernard, 1978 - (LIMIDAE)
- californica, Limatula californica Bernard, 1988 - syn of: Limatula saturna F.R. Bernard, 1978 - (LIMIDAE)
- californica, Macrarene californica (W.H. Dall, 1908) - (LIOTIIDAE)
- californica, Epilucina californica (T.A. Conrad, 1837) - (LUCINIDAE)
- californica, Lucina californica T.A. Conrad, 1837 - syn of: Epilucina californica (T.A. Conrad, 1837) - (LUCINIDAE)
- californica, Lyonsia californica T.A. Conrad, 1837 - (LYONSIIDAE)
- californica, Mactrotoma californica (T.A. Conrad, 1837) - (MACTRIDAE)
- californica, Volvarina californica J.R. le B. Tomlin, 1916 - syn of: Volvarina taeniolata O.A.L. Mörch, 1860 - (MARGINELLIDAE)
- californica, Coralliophila californica A. Adams, 1855 - syn of: Coralliophila costularis (J.B.P.A. Lamarck, 1816) - (MURICIDAE)
- californica, Cryptomya californica (T.A. Conrad, 1837) - (MYIDAE)
- californica, Sphenia californica T.A. Conrad, 1837 - syn of: Cryptomya californica (T.A. Conrad, 1837) - (MYIDAE)
- californica, Oliverato californica J.G. Cooper, 1894 † - (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- californica, Neritina californica L.A. Reeve, 1856 - (NERITIDAE)
- californica, Oreohelix californica S.S. Berry, 1931 - (OREOHELICIDAE)
- californica, Ostrea californica Mareon, 1858 - (OSTREIDAE)
- californica, Pedicularia californica W. Newcomb, 1864 - (PEDICULARIIDAE)
- californica, Philine californica G. Willett, 1944 - (PHILINIDAE)
- californica, Parapholas californica (T.A. Conrad, 1837) - (PHOLADIDAE)
- californica, Laevapex californica (J. Rowell, 1863) - (PLANORBIDAE)
- californica, Pleurobranchaea californica F.M. MacFarland, 1966 - (PLEUROBRANCHAEIDAE)
- californica, Berthella californica (W.H. Dall, 1900) - (PLEUROBRANCHIDAE)
- californica, Pomatiopsis californica H.A. Pilsbry, 1899 - (POMATIOPSIDAE)
- californica, Cerithideopsis californica (S.S. Haldeman, 1840) - (POTAMIDIDAE)
- californica, Cerithidea californica (S.S. Haldeman, 1840) - syn of: Cerithideopsis californica (S.S. Haldeman, 1840) - (POTAMIDIDAE)
- californica, Gari californica (T.A. Conrad, 1849) - (PSAMMOBIIDAE)
- californica, Gobraeus californica P.P. Carpenter, 1864 - syn of: Gari californica (T.A. Conrad, 1849) - (PSAMMOBIIDAE)
- californica, Odostomia californica W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- californica, Gelagna californica A. Adams, 1853 - syn of: Leucozonia nassa (J.F. Gmelin, 1791) - (RANELLIDAE)
- californica, Volvulella californica W.H. Dall, 1919 - (RHIZORIDAE)
- californica, Rissoella californica P. Bartsch, 1927 - syn of: Elachisina grippi W.H. Dall, 1918 - (RISSOELLIDAE)
- californica, Finella californica W.H. Dall & P. Bartsch, 1901 - syn of: Alabina californica (W.H. Dall & P. Bartsch, 1901) - (SCALIOLIDAE)
- californica, Cumingia californica T.A. Conrad, 1837 - (SEMELIDAE)
- californica, Semele californica (L.A. Reeve, 1853) - (SEMELIDAE)
- californica, Abra californica J. Knudsen, 1970 - (SEMELIDAE)
- californica, Ervilia californica W.H. Dall, 1916 - syn of: Ervilia nitens (G. Montagu, 1808) - (SEMELIDAE)
- californica, Skenea californica (P. Bartsch, 1907) - (SKENEIDAE)
- californica, Grippina californica W.H. Dall, 1912 - (SPHENIOPSIDAE)
- californica, Sportella californica W.H. Dall, 1899 - syn of: Neaeromya californica (W.H. Dall, 1899) - (SPORTELLIDAE)
- californica, Strobilops californica W.B. Miller & C.C. Christensen, 1980 - (STROBILOPSIDAE)
- californica, Rhodea californica (L. Pfeiffer, 1846) - (SUBULINIDAE)
- californica, Succinea californica P.H. Fischer & J.C.H. Crosse, 1878 - (SUCCINEIDAE)
- californica, Tellina californica W.M. Gabb, 1864 † - (TELLINIDAE) (FOSSIL)
- californica, Tindaria californica W.H. Dall, 1916 - syn of: Neilonella ritteri (W.H. Dall, 1916) - (TINDARIIDAE)
- californica, Trapezium californica T.A. Conrad, 1837 - syn of: Trapezium oblongum (C. Linnaeus, 1758) - (TRAPEZIDAE)
- californica, Trapezium californica T.A. Conrad, 1837 - syn of: Trapezium oblongum (C. Linnaeus, 1758) - (TRAPEZIDAE)
- californica, Pusula californica (G.B. II Sowerby, 1832) - (TRIVIIDAE)
- californica, Truncatella californica L. Pfeiffer, 1857 - (TRUNCATELLIDAE)
- californica, Valvata humeralis californica H.A. Pilsbry, 1908 - (VALVATIDAE)
- californica, Gouldia californica W.H. Dall, 1917 - (VENERIDAE)
- californica, Transenella californica R. Arnold, 1910 - syn of: Nutricola tantilla (A.A. Gould, 1853) - (VENERIDAE)
- californica, Vertigo californica (J. Rowell, 1861) - (VERTIGINIDAE)
- californica, Ascobulla californica (I. Hamatani, 1971) - (VOLVATELLIDAE)
- californica, Xylophaga californica P. Bartsch, 1921 - syn of: Xylophaga washingtona P. Bartsch, 1921 - (XYLOPHAGAIDAE)
- californica, Schwartziella californica (P. Bartsch, 1915) - (ZEBINIDAE)
- californica diegoensis, Vertigo californica diegoensis V. Sterki, 1890 - syn of: Nearctula rowellii diegoensis (V. Sterki, 1890) - (VERTIGINIDAE)
- californica fluxa, Nuttallina californica fluxa (P.P. Carpenter, 1864) - (LEPIDOCHITONIDAE)
- californica guadalupensis, Vertigo californica guadalupensis H.A. Pilsbry, 1927 - syn of: Nearctula rowellii guadalupensis (H.A. Pilsbry, 1927) - (VERTIGINIDAE)
- californica haroldi, Lyonsia californica haroldi W.H. Dall, 1915 - syn of: Lyonsia californica T.A. Conrad, 1837 - (LYONSIIDAE)
- californica loochooensis, Pusula californica loochooensis C.N. Cate, 1979 - (TRIVIIDAE)
- californica ovuliformis, Pedicularia californica ovuliformis S.S. Berry, 1946 - (PEDICULARIIDAE)
- californica sonorana, Crossata californica sonorana W.J. Broderip, 1833 - syn of: Crossata ventricosa sonorana (W.J. Broderip, 1833) - (BURSIDAE)
- Californiceras, Genus Californiceras Shimizu, 1931 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Californiconus, Genus Californiconus J.K. Tucker & M.J. Tenorio, 2009 (CONIDAE)
- californicum, Shastoceras californicum F.M. Anderson, 1938 † - (ANCYLOCERATIDAE) (FOSSIL)
- californicum, Caecum californicum W.H. Dall, 1885 - (CAECIDAE)
- californicum, Bittium californicum W.H. Dall & P. Bartsch, 1901 - syn of: Alabina californica (W.H. Dall & P. Bartsch, 1901) - (CERITHIIDAE)
- californicum, Chaetoderma californicum H. Heath, 1911 - (CHAETODERMATIDAE)
- californicum, Delepinoceras californicum W.J. Gordon, 1964 † - (DELEPINOCERATIDAE) (FOSSIL)
- californicum, Epitonium californicum W.H. Dall, 1917 - (EPITONIIDAE)
- californicum, Sinum californicum I.M. Oldroyd, 1917 † - syn of: Sinum scopulosum T.A. Conrad, 1849 † - (NATICIDAE) (FOSSIL)
- californicum, Thurmanniceras californicum (Stanton, 1895 †) - (NEOCOMITIDAE) (FOSSIL)
- californicum, Didymoceras californicum Anderson, 1958 † - (NOSTOCERATIDAE) (FOSSIL)
- californicum, Hypophylloceras californicum Anderson, 1938 † - (PHYLLOCERATIDAE) (FOSSIL)
- californicum, Prochaetoderma californicum (G. Schwabl, 1963) - (PROCHAETODERMATIDAE)
- californicum, Spathoderma californicum G. Schwabl, 1963 - syn of: Prochaetoderma californicum (G. Schwabl, 1963) - (PROCHAETODERMATIDAE)
- californicum, Isognomon californicum (T.A. Conrad, 1837) - (PTERIIDAE)
- californicum, Punctum californicum H.A. Pilsbry, 1898 - (PUNCTIDAE)
- californicum, Protrachyceras californicum Smith, 1927 † - syn of: Protrachyceras storrsi Smith, 1927 † - (TRACHYCERATIDAE) (FOSSIL)
- californicum, Trochus californicum A. Adams, 1853 - (TROCHIDAE)
- californicus, Ariolimax californicus J.G. Cooper, 1872 - (ARIOLIMACIDAE)
- californicus, Ancistrolepis californicus W.H. Dall, 1919 - (BUCCINIDAE)
- californicus, Plicolumna californicus (J.G. Cooper, 1891) - (BULIMULIDAE)
- californicus, Drymaeus californicus L.A. Reeve, 1848 - syn of: Drymaeus ziegleri (L. Pfeiffer, 1847) - (BULIMULIDAE)
- californicus, Capulus californicus W.H. Dall, 1900 - (CAPULIDAE)
- californicus, Chiton californicus L.A. Reeve, 1847 ex Nuttall MS - syn of: Nuttallina californica (L.A. Reeve, 1847 ex Nuttall MS) - (CHITONIDAE)
- californicus, Californiconus californicus (L.A. Reeve, 1844) - (CONIDAE)
- californicus, Paradonax californicus (T.A. Conrad, 1837) - (DONACIDAE)
- californicus, Cadulus californicus H.A. Pilsbry & B. Sharp, 1898 - (GADILIDAE)
- californicus, Megomphix californicus A.G. Smith, 1960 - (MEGOMPHICIDAE)
- californicus, Murex californicus R.B. Hinds, 1884 - syn of: Pteropurpura erinaceoides (A. Valenciennes, 1832) - (MURICIDAE)
- californicus, Mytilus californicus S. Clessin, 1887 - syn of: Mytilus zonarius J.B.P.A. Lamarck, 1819 - (MYTILIDAE)
- californicus, Velates californicus E.H. Vokes, 1935 † - (NERITIDAE) (FOSSIL)
- californicus, Octopus californicus S.S. Berry, 1911 - (OCTOPODIDAE)
- californicus, Paraganides californicus A. Hyatt & Smith, 1905 † - (OTOCERATIDAE) (FOSSIL)
- californicus, Ensis californicus W.H. Dall, 1899 † - (PHARIDAE) (FOSSIL)
- californicus, Ptychatractus californicus W.H. Dall, 1908 - (PTYCHATRACTIDAE)
- californicus, Tagelus californicus T.A. Conrad, 1837 - syn of: Tagelus californianus (T.A. Conrad, 1837) - (SOLECURTIDAE)
- californicus, Solen californicus W.H. Dall, 1899 - syn of: Cultellus magnus arcuatus - (SOLENIDAE)
- californicus, Gymnotropites californicus Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- californicus, Megalomphalus californicus (W.H. Dall, 1903) - (VANIKORIDAE)
- californicus denticulatus, Berthella californicus denticulatus F.M. MacFarland, 1966 - syn of: Berthella californica (W.H. Dall, 1900) - (PLEUROBRANCHIDAE)
- californicus denticulatus, Pleurobranchus californicus denticulatus F.M. MacFarland, 1966 - syn of: Berthella californica (W.H. Dall, 1900) - (PLEUROBRANCHIDAE)
- californicus fossilis, Conus californicus fossilis I.M. Oldroyd, 1921 † - syn of: Californiconus californicus (L.A. Reeve, 1844) - (CONIDAE) (FOSSIL)
- californicus navicula, Paradonax californicus navicula (S.C.T. Hanley, 1845) - (DONACIDAE)
- californicus ramentosus, Rabdotus californicus ramentosus J.G. Cooper, 1891 - syn of: Plicolumna ramentosus (J.G. Cooper, 1891) - (BULIMULIDAE)
- californiense, Keenocardium californiense (G.P. Deshayes, 1839) - (CARDIIDAE)
- californiense comoxense, Keenocardium californiense comoxense (W.H. Dall, 1900) - (CARDIIDAE)
- californiense middendorffi, Keenocardium californiense middendorffi A.I. Kafanov, 1999 - (CARDIIDAE)
- californiensis, Atlanta californiensis R.R. Seapy & G. Richter, 1993 - (ATLANTIDAE)
- californiensis, Felimare californiensis (L.S.R. Bergh, 1879) - (CHROMODORIDIDAE)
- californiensis, Hypselodoris californiensis L.S.R. Bergh, 1879 - syn of: Felimare californiensis (L.S.R. Bergh, 1879) - (CHROMODORIDIDAE)
- californiensis, Gonatus californiensis A.T. Young, 1972 - (GONATIDAE)
- californiensis, Haliotis cracherodi californiensis W.J. Swainson, 1822 - (HALIOTIDAE)
- californiensis, Helminthoglypta californiensis (H.C. Lea, 1838) - (HELMINTHOGLYPTIDAE)
- californiensis, Pyrgulopsis californiensis W.O. Gregg & D.W. Taylor, 1965 - (HYDROBIIDAE)
- californiensis, Lepidozona pectinulatus californiensis (S.S. Berry, 1931) - (ISCHNOCHITONIDAE)
- californiensis, Jania californiensis (E.G. Bryant & K.V.W. Palmer, 1923 †) - (MURICIDAE) (FOSSIL)
- californiensis, Adula californiensis (R.A. Philippi, 1847) - (MYTILIDAE)
- californiensis, Modiolus californiensis R.A. Philippi, 1847 - syn of: Adula californiensis (R.A. Philippi, 1847) - (MYTILIDAE)
- californiensis, Helisoma californiensis H.B. Baker, 1940 - syn of: Pierosoma tenue californiensis (H.B. Baker, 1940) - (PLANORBIDAE)
- californiensis, Pierosoma tenue californiensis (H.B. Baker, 1940) - (PLANORBIDAE)
- californiensis, Tenagodus californiensis R.L. Squires, 1990 † - (SILIQUARIIDAE) (FOSSIL)
- californiensis, Anodonta californiensis I. Lea, 1852 - (UNIONIDAE)
- californiensis, Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- californiensis, Petricola californiensis H.A. Pilsbry & H.N. Lowe, 1932 - (VENERIDAE)
- californiensis, Gafrarium californiensis W.H. Dall, 1917 - syn of: Gouldia californica W.H. Dall, 1917 - (VENERIDAE)
- californiensis, Venus californiensis W.J. Broderip, 1835 - syn of: Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- californiensis chosenica, Adula californiensis chosenica T. Habe & K. Itô, 1965 - syn of: Adula schmidtii (L. von Schrenck, 1867) - (MYTILIDAE)
- californiensis durhami, Chione californiensis durhami C.F. Parker, 1949 - syn of: Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- californiensis gealeyi, Chione californiensis gealeyi C.F. Parker, 1949 - syn of: Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- californiensis nipponica, Adula californiensis nipponica T. Habe, 1955 - syn of: Adula schmidtii (L. von Schrenck, 1867) - (MYTILIDAE)
- californiensis peabodyi, Chione californiensis peabodyi C.F. Parker, 1949 - syn of: Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- Californites, Subgenus Clionitites (Californites) Hyatt & Smith, 1905 (CLIONITITIDAE) (FOSSIL)
- Califostoma, Genus Califostoma Bean & Vermeij, 2016 (MURICIDAE) (FOSSIL)
- califronica catalinaria, Vertigo califronica catalinaria V. Sterki - syn of: Nearctula rowellii catalinaria (V. Sterki) - (VERTIGINIDAE)
- caliginosa, Ampullaria caliginosa L.A. Reeve, 1856 - syn of: Pomacea paludosa (T. Say, 1829) - (AMPULLARIIDAE)
- caliginosa, Euhadra caliginosa (A. Adams & L.A. Reeve, 1850) - (BRADYBAENIDAE)
- caliginosa, Ruthvenia caliginosa (E.R. Sykes, 1898) - (CHAROPIDAE)
- caliginosa, Eatoniella caliginosa (E.A. Smith, 1875) - (EATONIELLIDAE)
- caliginosa, Laevilitorina caliginosa (Gould, 1850) - (LITTORINIDAE)
- caliginosa, Mitra caliginosa L.A. Reeve, 1844 - (MITRIDAE)
- caliginosa, Terebra caliginosa G.P. Deshayes, 1859 - syn of: Strioterebrum caliginosum (G.P. Deshayes, 1859) - (TEREBRIDAE)
- caliginosa, Stomatella caliginosa H. Adams & A. Adams, 1864 - syn of: Synaptocochlea picta (A.V.M.D. D'Orbigny, 1847) - (TROCHIDAE)
- caliginosum, Strioterebrum caliginosum (G.P. Deshayes, 1859) - (TEREBRIDAE)
- caliginosus, Vermiculatus caliginosus (L.A. Reeve, 1849) - (BULIMULIDAE)
- caliginosus, Coniglobus caliginosus (A. Adams & L.A. Reeve, 1850) - (CAMAENIDAE)
- caliginosus, Joculator caliginosus A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- caliginosus, Ischnochiton caliginosus (L.A. Reeve, 1847) - (ISCHNOCHITONIDAE)
- caliginosus, Haploplax caliginosus (L.A. Reeve, 1847) - syn of: Ischnochiton caliginosus (L.A. Reeve, 1847) - (ISCHNOCHITONIDAE)
- caliginosus, Murex caliginosus L.A. Reeve, 1845 - syn of: Ocinebrellus falcata (G.B. II Sowerby, 1834) - (MURICIDAE)
- caliginosus, Unio caliginosus I. Lea, 1845 - syn of: Villosa lienosa (T.A. Conrad, 1834) - (UNIONIDAE)
- caliginosus pictus, Coniglobus caliginosus pictus (H.A. Pilsbry & Y. Hirase, 1909) - (CAMAENIDAE)
- caligula, Creseis caligula J.F. von Eschscholtz, 1829 - syn of: Creseis virgula (P.C.A.S.L. Rang, 1828) - (CRESEIDAE)
- calimanica, Bythinella calimanica A. Falniowski, M. Szarowska & I. Sirbu, 2009 - (BYTHINELLIDAE)
- Calinaticina, Genus Calinaticina J.Q. Burch & G.B. Campbell, 1963 (NATICIDAE)
- calini, Turbonilla calini J. Espinosa & J.A. Ortea, 2014 - (PYRAMIDELLIDAE)
- Caliphylla, Genus Caliphylla A. da Costa, 1869 (CALIPHYLLIDAE)
- CALIPHYLLIDAE - syn of Family: CALIPHYLLIDAE
- CALIPHYLLIDAE Tiberi, 1881 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-SACOGLOSSA [Order]-PLAKOBRANCHACEA [Suborder]-LIMAPONTIOIDEA [Sup)
- calipygos, Anodonta calipygos W. Kobelt, 1879 - syn of: Sinanodonta woodiana calypigos (W. Kobelt, 1879) - (UNIONIDAE)
- calipygos humerosa, Anodonta calipygos humerosa C.A. Westerlund, 1885 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- calista, Cochlostyla calista W.J. Broderip, 1841 - syn of: Helicostyla diana calista (W.J. Broderip, 1841) - (BRADYBAENIDAE)
- calista, Helicostyla diana calista (W.J. Broderip, 1841) - (BRADYBAENIDAE)
- caliste, Venus caliste J.F. Gmelin, 1791 - syn of: Circenita varia (P. Forsskål in C. Niebuhr, 1775) - (VENERIDAE)
- calisto, Spirocirrus calisto (A.V.M.D. D'Orbigny, 1850 †) - (CIRRIDAE) (FOSSIL)
- Calisuccinea, Subgenus Succinea (Calisuccinea) H.A. Pilsbry, 1948 (SUCCINEIDAE)
- calix, Architectonica calix Phillips, 1829 † - (ARCHITECTONICIDAE) (FOSSIL)
- calix, Amphiscapha calix W.J. Gordon & E.L. Yochelson, 1975 † - (EUOMPHALIDAE) (FOSSIL)
- calix, Patella calix C.C. Li, 1930 - (PATELLIDAE)
- calkinsi, Melanella calkinsi A.A. Olsson & A. Harbison, 1953 † - (EULIMIDAE) (FOSSIL)
- calkinsi, Saccella calkinsi (E.W.J. Moore, 1963 †) - (NUCULANIDAE) (FOSSIL)
- calkinsi, Chlamys calkinsi R. Arnold, 1906 † - (PECTINIDAE) (FOSSIL)
- Calkota, Genus Calkota Squires & Saul, 2003 (FASCIOLARIIDAE) (FOSSIL)
- calla, Granulina calla T. McCleery, 2010 - (MARGINELLIDAE)
- callaea, Pholadomya callaea Whidborne † - (PHOLADOMYIDAE) (FOSSIL)
- callaghani, Armenoceras callaghani Flower, 1957 † - (ARMENOCERATIDAE) (FOSSIL)
- callaghani, Glycymeris callaghani J. Marwick, 1923 † - (GLYCYMERIDIDAE) (FOSSIL)
- callaghani, Alcithoe callaghani (L. C. King, 1931 †) - (VOLUTIDAE) (FOSSIL)
- callahanensis, Ectomaria callahanensis (Rohr, 1980 †) - (LOPHOSPIRIDAE) (FOSSIL)
- callahanensis, Murchisonia callahanensis Rohr, 1980 † - syn of: Ectomaria callahanensis (Rohr, 1980 †) - (MURCHISONIIDAE) (FOSSIL)
- callahanensis coeloconoidea, Ectomaria callahanensis coeloconoidea (Rohr, 1980 †) - (LOPHOSPIRIDAE) (FOSSIL)
- callahanensis coeloconoidea, Murchisonia callahanensis coeloconoidea Rohr, 1980 † - syn of: Ectomaria callahanensis coeloconoidea (Rohr, 1980 †) - (MURCHISONIIDAE) (FOSSIL)
- Callaionautilus, Genus Callaionautilus Kieslinger, 1924 (CLYDONAUTILIDAE) (FOSSIL)
- callamus, Pietteia callamus J. Gründel, 2001 † - (APORRHAIDAE) (FOSSIL)
- Callanaitis, syn of: Genus Circomphalus O.A.L. Mφrch, 1853 (VENERIDAE)
- callangana, Columbinia callangana (P. Ehrmann, 1905) - (CLAUSILIIDAE)
- callaoensis, Scutalus versicolor callaoensis H.A. Pilsbry, 1897 - (BULIMULIDAE)
- callaoensis, Acanthais callaoensis (J.E. Gray, 1828) - (MURICIDAE)
- callarabdota, Aegopinella callarabdota J. Da Silva e Castro, 1890 - syn of: Aegopinella pura (J. Alder, 1830) - (ZONITIDAE)
- callare, Farcimen seminudum callare C. de la Torre & P. Bartsch, 1942 ex F. Poey MS - (MEGALOMASTOMIDAE)
- callatis, Deroceras callatis A.V. Grossu & D. Lupu, 1963 - (AGRIOLIMACIDAE)
- callazonensis, Clionitites callazonensis Tozer, 1994 † - (CLIONITITIDAE) (FOSSIL)
- callazonensis, Pacimonotis callazonensis (Westermann, 1962 †) - (MONOTIDAE) (FOSSIL)
- calleanus, Bulimus calleanus P.M.A. Morelet, 1848 - (BULIMULIDAE)
- callembryon, Puposyrnola callembryon (P. Dautzenberg & H. Fischer, 1906) - (PYRAMIDELLIDAE)
- callembryon, Neopleurotomoides callembryon (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- callembryon, Pleurotoma callembryon P. Dautzenberg & H. Fischer, 1896 - syn of: Neopleurotomoides callembryon (P. Dautzenberg & H. Fischer, 1896) - (TURRIDAE)
- callembyron, Neopleurotomoides callembyron (P. Dautzenberg & H. Fischer, 1896) - syn of: Neopleurotomoides callembryon (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- callerifera, Hemicycla callerifera O. Böttger, 1908 - syn of: Adiverticula pouchet (A. Mousson, 1872) - (HELICIDAE)
- calli, Gymnites calli Smith, 1914 † - (GYMNITIDAE) (FOSSIL)
- calli, Pecten calli L.G. Hertlein, 1925 - syn of: Argopecten ventricosus (G.B. II Sowerby, 1842) - (PECTINIDAE)
- calli, Valvata calli Hanniball, 1910 † - (VALVATIDAE) (FOSSIL)
- Callia, syn of: Genus Callianella R.B. Newton, 1891 (PUPINIDAE)
- callia, Turbonilla callia W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- Callianax, Subgenus Olivella (Callianax) H. Adams & A. Adams, 1853 (OLIVELLIDAE) (FOSSIL)
- Callianella, Genus Callianella R.B. Newton, 1891 (PUPINIDAE)
- callianira, Clathrodrillia callianira (W.H. Dall, 1919) - (DRILLIIDAE)
- calliaqua, Mitromica calliaqua G. Rosenberg & R. Salisbury, 2003 - (COSTELLARIIDAE)
- calliaudi, Phanerotrema calliaudi Barrois, 1889 † - (PHANEROTREMATIDAE) (FOSSIL)
- callicera, Volvulella callicera W.H. Dall - syn of: Volvulella cylindrica (Carpenter, 1865) - (RHIZORIDAE)
- callicerata, Neptunea callicerata W.H. Dall, 1919 - syn of: Boreotrophon avalonensis W.H. Dall, 1902 - (BUCCINIDAE)
- calliceratus, Boreotrophon calliceratus W.H. Dall, 1919 - (MURICIDAE)
- callicerum, Taramelliceras callicerum (Oppel, 1863 †) - (OPPELIIDAE) (FOSSIL)
- callicesta, Borsonella callicesta (W.H. Dall, 1902) - (BORSONIIDAE)
- callicesta, Pleurotoma callicesta W.H. Dall, 1902 - syn of: Borsonella callicesta (W.H. Dall, 1902) - (TURRIDAE)
- callicestosa, Anadara callicestosa W.H. Dall, 1898 † - (ARCIDAE) (FOSSIL)
- callicestosa wilsoni, Anadara callicestosa wilsoni Gardner, 1943 - (ARCIDAE)
- callichroa, Melanopsis callichroa J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- callichroa, Ostrea callichroa S.C.T. Hanley, 1846 - syn of: Ostrea chilensis R.A. Philippi, 1844 - (OSTREIDAE)
- callichrous, Cantharidus callichrous R.A. Philippi, 1850 - (TROCHIDAE)
- callichrous bisbalteatus, Cantharidus callichrous bisbalteatus (H.A. Pilsbry, 1901) - syn of: Cantharidus bisbalteatus (H.A. Pilsbry, 1901) - (TROCHIDAE)
- callichrous jessoensis, Cantharidus callichrous jessoensis (L. von Schrenck, 1863) - (TROCHIDAE)
- Callicistronia, syn of: Genus Parastarte T.A. Conrad, 1862 (VENERIDAE)
- Calliclava, Genus Calliclava J.H. McLean, 1971 (DRILLIIDAE)
- Callicochlias, syn of: Genus Calocochlia J.D.W. Hartmann, 1840 (BRADYBAENIDAE)
- callicomata, Lamelliconcha callicomata (W.H. Dall, 1902) - (VENERIDAE)
- callicomata, Pitar callicomata W.H. Dall, 1902 - syn of: Lamelliconcha callicomata (W.H. Dall, 1902) - (VENERIDAE)
- calliconcinnata, Semele calliconcinnata W.P. Woodring, 1925 † - (SEMELIDAE) (FOSSIL)
- Calliconites, Genus Calliconites Smith, 1927 (XIPHOTEUTHIDIDAE) (FOSSIL)
- callicratis, Truncatellina callicratis (A. Scacchi, 1833) - (VERTIGINIDAE)
- callicredemna, Mangelia callicredemna J.C. Melvill, 1917 - (MANGELIIDAE)
- callicredemna, Nucula callicredemna W.H. Dall, 1890 - (NUCULIDAE)
- Callida, syn of: Genus Calidviana F.C. Baker, 1954 (HELICINIDAE)
- callida, Tetrentodon gracillima callida C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- callidaea, Anodonta callidaea J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- callidegenita, Haminoea callidegenita G.G. Gibson & F.S. Chia, 1989 - syn of: Haminoea japonica H.A. Pilsbry, 1895 - (HAMINOEIDAE)
- callidinus, Muricanthus callidinus S.S. Berry, 1958 - syn of: Triplex ambiguus (L.A. Reeve, 1845) - (MURICIDAE)
- callidiscus, Deshayesites callidiscus T.L. Casey, 1964 † - (DESHAYESITIDAE) (FOSSIL)
- callidiscus, Teschenites callidiscus Thieuloy, 1971 † - (NEOCOMITIDAE) (FOSSIL)
- callidiscus annelidus, Deshayesites callidiscus annelidus T.L. Casey, 1964 † - (DESHAYESITIDAE) (FOSSIL)
- callidiscus rugosus, Deshayesites callidiscus rugosus T.L. Casey, 1964 † - (DESHAYESITIDAE) (FOSSIL)
- callidus, Helicarion mastersi callidus T. Iredale, 1941 - (HELICARIONIDAE)
- callidus, Argopecten callidus L.G. Hertlein, 1925 † - (PECTINIDAE) (FOSSIL)
- callifera, Ancilla callifera K.H.J. Thiele, 1925 - (ANCILLARIIDAE)
- callifera, Barbatia callifera J.B.P.A. Lamarck, 1819 - syn of: Barbatia cancellaria (J.B.P.A. Lamarck, 1819) - (ARCIDAE)
- callifera, Microcystina callifera J.J. Vermeulen, T.S. Liew & M. Schilthuizen, 2015 - (ARIOPHANTIDAE)
- callifera, Semirugata vidovichii callifera (H.C. Küster, 1853) - (CLAUSILIIDAE)
- callifera, Collonia callifera (G.P. Deshayes, 1888 †) - (COLLONIIDAE) (FOSSIL)
- callifera, Pycnodonte callifera (J.B.P.A. Lamarck, 1819 †) - (GRYPHAEIDAE) (FOSSIL)
- callifera, Thaisella callifera (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- callifera, Thais callifera (J.B.P.A. Lamarck, 1822) - syn of: Thaisella callifera (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- callifera, Ostrea callifera J.B.P.A. Lamarck, 1819 † - syn of: Pycnodonte callifera (J.B.P.A. Lamarck, 1819 †) - (OSTREIDAE) (FOSSIL)
- callifera, Partula callifera L. Pfeiffer, 1857 - syn of: Partula dentifera L. Pfeiffer, 1853 - (PARTULIDAE)
- callifera, Sabatia callifera Boettger, 1906 † - (SCAPHANDRIDAE) (FOSSIL)
- callifera, Leucorhynchia callifera (G.P. Deshayes, 1832 †) - (SKENEIDAE) (FOSSIL)
- callifera, Gonospira callifera (P.M.A. Morelet, 1860) - (STREPTAXIDAE)
- callifera, Catinella callifera A.A. Baudon, 1877 - syn of: Catinella arenaria (N.R. Bouchard-Chantereaux, 1837) - (SUCCINEIDAE)
- callifera, Monilea callifera (J.B.P.A. Lamarck, 1822) - (TROCHIDAE)
- callifera, Pleurotoma callifera F.E. Edwards, 1860 † - syn of: Gemmula jefferyi Tracey † - (TURRIDAE) (FOSSIL)
- calligera, Caucasotachea calligera (F. Dubois De Montpéreux, 1840) - (HELICIDAE)
- calliglypta, Gonilia calliglypta (W.H. Dall, 1903) - (ASTARTIDAE)
- calliglypta, Cosmioconcha calliglypta (W.H. Dall, 1901) - (COLUMBELLIDAE)
- calliglypta, Pseudoliotia calliglypta (J.C. Melvill, 1891) - (TORNIDAE)
- calliglypta, Vitrinella calliglypta C.G. Aguayo, 1949 - (TORNIDAE)
- calliglyptum, Teinostoma calliglyptum W.H. Dall, 1903 † - (TORNIDAE) (FOSSIL)
- Calliglyptum, syn of: Genus Anticlimax H.A. Pilsbry & J.T.L. McGinty, 1946 (TORNIDAE)
- calligona, Gonilia calligona W.H. Dall, 1903 - syn of: Gonilia calliglypta (W.H. Dall, 1903) - (ASTARTIDAE)
- calligona, Crassispira calligona (C.J. Maury, 1910 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- calligona, Voluta calligona C.J. Maury, 1934 † - (VOLUTIDAE) (FOSSIL)
- calligona paraconsors, Crassispira calligona paraconsors J. Gardner, 1937 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- calligonoides, Hindsiclava calligonoides (J. Gardner, 1938 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- Callihoplites, Genus Callihoplites Seeley, 1865 (HOPLITIDAE) (FOSSIL)
- callilateris, Parafusus callilateris (B. Wade, 1917 †) - (FASCIOLARIIDAE) (FOSSIL)
- Calliloconcha, syn of: Genus Calliloncha V.J. Lus, 1978 (BUCCINIDAE)
- Calliloncha, Genus Calliloncha V.J. Lus, 1978 (BUCCINIDAE)
- Callimachus, syn of: Genus Walvisteuthis K.N. Nesis & I.V. Nikitina, 1986 (ONYCHOTEUTHIDAE)
- callimene, Jupiteria callimene (W.H. Dall, 1908) - (NUCULANIDAE)
- callimene, Odostomia callimene P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- callimorpha, Calocochlia persimilis callimorpha P. Bartsch, 1930 - (BRADYBAENIDAE)
- callimorpha, Alia callimorpha W.H. Dall, 1919 - (COLUMBELLIDAE)
- callimorpha, Aoteadrillia callimorpha (H.H. Suter, 1917 †) - (HORAICLAVIDAE) (FOSSIL)
- callimorpha, Varioclymenia callimorpha C.N. Lange, 1929 † - (PLATYCLYMENIIDAE) (FOSSIL)
- callimorpha, Odostomia callimorpha W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- callimorpha, Globivenus callimorpha (W.H. Dall, 1902) - (VENERIDAE)
- callimorphum, Scrinium callimorphum (H.H. Suter, 1917 †) - (MITROMORPHIDAE) (FOSSIL)
- callimorphus, Chlamys callimorphus C.J. Maury, 1924 † - (PECTINIDAE) (FOSSIL)
- callimus, Kleokyphus callimus G.A. Solem, 1976 - (ENDODONTIDAE)
- Callina, Subgenus Viviparus (Callina) R.T. Lowe, 1854 (VIVIPARIDAE)
- Calliobasis, Genus Calliobasis B.A. Marshall, 1983 (SEGUENZIIDAE)
- CALLIODENTALIIDAE Chistikov, 1975 - Family (SCAPHOPODA-DENTALIIDA [Order])
- Calliodentalium, Genus Calliodentalium T. Habe, 1964 (CALLIODENTALIIDAE)
- Calliomphalus, Genus Calliomphalus A.E.M. Cossmann, 1888 (CALLIOTROPIDAE) (FOSSIL)
- Callionepion, Genus Callionepion H.A. Pilsbry & E.G. Vanatta, 1899 (MEGASPIRIDAE)
- Calliopaea, Genus Calliopaea D'Orbigny, 1837 (LIMAPONTIIDAE)
- calliope, Calliostoma calliope B.C. Cotton & F.C. Godfrey, 1938 - syn of: Astele ciliaris (K.T. Menke, 1843) - (CALLIOSTOMATIDAE)
- calliope, Columbella calliope J.C. Melvill, 1903 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- calliope, Andrefrancia calliope (J.C.H. Crosse, 1869) - (ENDODONTIDAE)
- calliope, Odostomia calliope P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- calliopeae, Volvarina calliopeae J. Espinosa & J.A. Ortea, 2015 - (MARGINELLIDAE)
- Calliostoma, Genus Calliostoma W.J. Swainson, 1840 (CALLIOSTOMATIDAE)
- calliostoma, Theba planata calliostoma A. Adams & L.A. Reeve, 1848 - (HELICIDAE)
- CALLIOSTOMATIDAE Thiele, 1924 - Family (GASTROPODA-VETIGASTROPODA [Subclass]-TROCHOIDEA [Superfamily])
- calliostomatoides, Trochocerithium calliostomatoides K.H.J. Thiele, 1929 - syn of: Plesiotrochus calliostomoides (K.H.J. Thiele, 1929) - (PLESIOTROCHIDAE)
- calliostomoides, Margarites calliostomoides R.V. Egorov, 2000 - (MARGARITIDAE)
- calliostomoides, Plesiotrochus calliostomoides (K.H.J. Thiele, 1929) - (PLESIOTROCHIDAE)
- calliostomus, Plekocheilus calliostomus W.L.H. Dohrn, 1882 - (AMPHIBULIMIDAE)
- Calliotectum, Genus Calliotectum W.H. Dall, 1890 (VOLUTIDAE)
- Calliotrochus, Genus Calliotrochus P. Fischer in L.C. Kiener & P. Fischer, 1880 (TROCHIDAE)
- CALLIOTROPIDAE Hickman & McLean, 1990 - Family (GASTROPODA-VETIGASTROPODA [Subclass]-SEGUENZIOIDEA [Superfamily])
- Calliotropini, syn of: Genus Wilsoniconcha W.A. Wenz, 1939 (CHILODONTIDAE)
- Calliotropis, Genus Calliotropis G. Seguenza, 1903 (CALLIOTROPIDAE)
- calliotropis, Abbottella calliotropis G.T. Watters, 2013 - (POMATIIDAE)
- Calliovarica, Genus Calliovarica E.H. Vokes, 1939 (CHILODONTIDAE)
- calliozonus, Chiton calliozonus H.A. Pilsbry, 1894 - (CHITONIDAE)
- Callipara, Genus Callipara J.E. Gray, 1847 (VOLUTIDAE)
- callipareia, Amphilepida callipareia (J.C. Melvill, 1899) - (GALEOMMATIDAE)
- calliparela, Amphilepida calliparela J.C. Melvill, 1899 - syn of: Amphilepida callipareia (J.C. Melvill, 1899) - (GALEOMMATIDAE)
- callipepla, Calocochlia persimilis callipepla P. Bartsch, 1930 - (BRADYBAENIDAE)
- callipeplum, Calliodentalium callipeplum (W.H. Dall, 1889) - (CALLIODENTALIIDAE)
- callipeplum, Dentalium callipeplum W.H. Dall, 1889 - syn of: Calliodentalium callipeplum (W.H. Dall, 1889) - (DENTALIIDAE)
- callipeplum, Epitonium callipeplum W.H. Dall, 1919 - (EPITONIIDAE)
- callipeplum, Geostilbia callipeplum (M. Connolly, 1923) - (FERUSSACIIDAE)
- callipeplum, Chondropomium callipeplum G.A. Solem, 1961 - (POMATIIDAE)
- callipeplum, Turbonilla callipeplum W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- callipeplus, Monadenia callipeplus S.S. Berry, 1940 - (MONADENIIDAE)
- Calliphylla, syn of: Genus Caliphylla A. da Costa, 1869 (CALIPHYLLIDAE)
- Calliphylloceras, Genus Calliphylloceras Spath , 1927 (PHYLLOCERATIDAE) (FOSSIL)
- calliphylloides, Psiloceras calliphylloides Pompeckj, 1893 † - (PSILOCERATIDAE) (FOSSIL)
- calliphyllum, Psiloceras calliphyllum (M. von Neumayr, 1879 †) - (PSILOCERATIDAE) (FOSSIL)
- callipicta, Pusia callipicta H. Sarasúa, 1978 - syn of: Vexillum semifasciatum (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- callipictum, Uromitra callipictum W.P. Woodring, 1928 † - (COSTELLARIIDAE) (FOSSIL)
- callipictum, Striatascala callipictum W.P. Woodring, 1928 † - (EPITONIIDAE) (FOSSIL)
- calliplocoides, Tropidoceras calliplocoides Spath, 1923 † - (POLYMORPHITIDAE) (FOSSIL)
- calliplocum, Tropidoceras calliplocum C. Gemmellaro, 1884 † - (POLYMORPHITIDAE) (FOSSIL)
- callipona, Chama callipona C.J. Maury, 1924 † - (CHAMIDAE) (FOSSIL)
- callipona, Hemicycla callipona J.F. Mabille, 1882 - syn of: Hemicycla bidentalis (J.B.P.A. Lamarck, 1811) - (HELICIDAE)
- callipteryx, Lucina callipteryx R. Tournouer, 1874 † - (LUCINIDAE) (FOSSIL)
- Calliptychoceras, Genus Calliptychoceras Spath, 1924 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- callipyga, Corbicula callipyga J.R. Bourguignat, 1885 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- callipyga, Circenita callipyga (I. von Born, 1778) - (VENERIDAE)
- callipygum, Gafrarium callipygum (I. von Born, 1778) - (VENERIDAE)
- callipyrga, Odostomia callipyrga W.H. Dall & P. Bartsch, 1904 - (PYRAMIDELLIDAE)
- callipyrgus, Triphora callipyrgus P. Bartsch, 1907 - (TRIPHORIDAE)
- callirhoe, Isaurica callirhoe (H. Rolle, 1894) - (HELICIDAE)
- callirhyza, Arca callirhyza A.E.M. Cossmann & G. Pissarro, 1903 † - (ARCIDAE) (FOSSIL)
- Calliscapha, syn of: Genus Mutela J.A. Scopoli, 1777 (IRIDINIDAE)
- Calliscaphites, Subgenus Myloceras (Calliscaphites) Leanza, 1970 (LABECERATIDAE) (FOSSIL)
- callisoma, Cerithium callisoma W.H. Dall, 1892 - syn of: Cerithium muscarum T. Say, 1832 - (CERITHIIDAE)
- callisona, Candidula callisona É.A.A. Locard, 1899 - syn of: Candidula olissipensis (G. Servain, 1880) - (HYGROMIIDAE)
- Callispira, Genus Callispira Nelson, 1947 (ACANTHONEMATIDAE) (FOSSIL)
- callista, Falsimargarita callista B.A. Marshall, 2016 - (CALLIOSTOMATIDAE)
- callista, Erosaria helvola callista (H.O.N. Shaw, 1909) - (CYPRAEIDAE)
- callista, Thyca callista (S.S. Berry, 1959) - (EULIMIDAE)
- callista, Bessomia callista S.S. Berry, 1959 - syn of: Thyca callista (S.S. Berry, 1959) - (EULIMIDAE)
- callista, Melanopsis callista J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- callista, Egilina callista (J.C. Melvill, 1893) - (PYRAMIDELLIDAE)
- callista, Cingulina callista (P. Bartsch, 1915) - (PYRAMIDELLIDAE)
- callista, Grandidieria callista J.R. Bourguignat, 1888 - syn of: Grandidieria burtoni (S. Woodward, 1859) - (UNIONIDAE)
- callista, Valvata callista W. Innes, 1884 - (VALVATIDAE)
- Callista, Genus Callista G.S. Poli, 1791 (VENERIDAE)
- callista, Yoldia callista K.J. Bush, 1893 - (YOLDIIDAE)
- Callistadia, Genus Callistadia Knight , 1945 (GOSSELETINIDAE) (FOSSIL)
- Callistalox, Genus Callistalox Saul, 1993 (VENERIDAE) (FOSSIL)
- Callistassecla, syn of: Genus Callistochiton W.H. Dall, 1879 (CALLISTOPLACIDAE)
- Callistassecla, syn of: Genus Callistochiton W.H. Dall, 1879 (CALLISTOPLACIDAE)
- calliste, Callistomyrtea calliste (Oppenheim 1903) † - (LUCINIDAE) (FOSSIL)
- Callistelasma, syn of: Genus Callistochiton W.H. Dall, 1879 (CALLISTOPLACIDAE)
- Callistele, Genus Callistele B.C. Cotton & F.C. Godfrey, 1935 (TROCHIDAE)
- callistemma, Melanella callistemma W.H. Dall, 1927 - (EULIMIDAE)
- callistephana, Mangelia callistephana J.C. Melvill, 1904 - syn of: Ceritoturris pupiformis (E.A. Smith, 1884) - (MANGELIIDAE)
- Callisteuma, syn of: Genus Cerithiopsis E. Forbes & S.C.T. Hanley, 1850 (CERITHIOPSIDAE)
- callistiformis, Tindaria callistiformis A.E. Verrill & K.J. Bush, 1897 - (TINDARIIDAE)
- Callistina, Genus Callistina Jukes-Browne 1908 (VENERIDAE) (FOSSIL)
- callisto, Micichiton callisto K.B. Clark, 2002 - (LEPIDOCHITONIDAE)
- callisto, Berriasella callisto (A.V.M.D. D'Orbigny, 1847 †) - (NEOCOMITIDAE) (FOSSIL)
- callisto, Thelyssa callisto F.M. Bayer, 1971 - (SEGUENZIIDAE)
- Callistocharis, Subgenus Aspastus (Callistocharis) H.A. Pilsbry, 1900 (BOTHRIEMBRYONTIDAE)
- callistochila, Luchuphaedusa callistochila (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- Callistochiton, Genus Callistochiton W.H. Dall, 1879 (CALLISTOPLACIDAE)
- Callistoctopus, Genus Callistoctopus Is. Taki, 1964 (OCTOPODIDAE)
- Callistocypraea, syn of: Genus Lyncina F.H. Troschel, 1863 (CYPRAEIDAE)
- callistoderma, Boninena callistoderma (H.A. Pilsbry, 1900) - (ENIDAE)
- callistoderma, Helminthoglypta callistoderma H.A. Pilsbry, 1917 - (HELMINTHOGLYPTIDAE)
- Callistoderma, syn of: Genus Callista G.S. Poli, 1791 (VENERIDAE)
- callistoglypta, Incaglaia adusta callistoglypta (H.A. Pilsbry, 1949) - (CLAUSILIIDAE)
- callistoides, Oxyperas callistoides A.A. Olsson, 1928 † - (MACTRIDAE) (FOSSIL)
- callistoides, Berriasella callistoides (Behrendsen, 1891 †) - (NEOCOMITIDAE) (FOSSIL)
- callistoides, Paradontoceras callistoides Behrendsen, 1891 † - syn of: Berriasella callistoides (Behrendsen, 1891 †) - (NEOCOMITIDAE) (FOSSIL)
- callistoides, Anomalocardia callistoides H.A. Pilsbry & A.A. Olsson, 1941 † - (VENERIDAE) (FOSSIL)
- Callistoma, syn of: Genus Calliostoma W.J. Swainson, 1840 (CALLIOSTOMATIDAE)
- callistoma, Hemiphaedusa callistoma A.R.J.B. Bavay & P. Dautzenberg, 1899 - (CLAUSILIIDAE)
- callistoma, Montenegrina perstriata callistoma Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- callistoma, Tetrameroceras callistoma (Barrande, 1865 †) - (HEMIPHRAGMOCERATIDAE) (FOSSIL)
- callistoma, Octamerella callistoma Barrande † - (HEMIPHRAGMOCERATIDAE) (FOSSIL)
- callistoma, Phragmoceras callistoma Barrande, 1865 † - syn of: Tetrameroceras callistoma (Barrande, 1865 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- callistomella, Clausilia callistomella A.R.J.B. Bavay & P. Dautzenberg, 1900 - (CLAUSILIIDAE)
- Callistomyrtea, Genus Callistomyrtea Strougo, 1977 (LUCINIDAE) (FOSSIL)
- calliston, Astele calliston J.C. Verco, 1905 - syn of: Callistele calliston (J.C. Verco, 1905) - (CALLIOSTOMATIDAE)
- calliston, Callistele calliston (J.C. Verco, 1905) - (TROCHIDAE)
- Callistopepla, syn of: Genus Callistoplepa C.M.F. Ancey, 1888 (ACHATINIDAE)
- CALLISTOPLACIDAE Pilsbry, 1893 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]-CHITONIDA [Order]-CHITONINA [Suborder]-CHITONOIDEA [Superfamily])
- Callistoplax, Genus Callistoplax W.H. Dall, 1882 (CALLISTOPLACIDAE)
- Callistoplepa, Genus Callistoplepa C.M.F. Ancey, 1888 (ACHATINIDAE)
- Callistotapes, Subgenus Tapes (Callistotapes) F. Sacco, 1900 (VENERIDAE) (FOSSIL)
- callistrophia, Rissoa callistrophia W.H. Dall, 1892 † - (RISSOIDAE) (FOSSIL)
- callistum, Glyphostoma callistum R.P.J. Hervier, 1896 - (CLATHURELLIDAE)
- callistus, Gyraulus callistus J.R. Bourguignat, 1881 - syn of: Gyraulus lenapalus (J.R. Bourguignat, 1881 ) - (PLANORBIDAE)
- callistus, Vitrinorbis callistus H.A. Pilsbry & A.A. Olsson, 1952 - (TORNIDAE)
- Calliteuthis, syn of: Genus Histioteuthis D'Orbigny, 1842 in A.E.J. Fιrussac & D'Orbigny, 1834 (HISTIOTEUTHIDAE)
- Callithaca, Genus Callithaca W.H. Dall, 1902 (VENERIDAE)
- Callithea, syn of: Subgenus Vexillum (Costellaria) W.J. Swainson, 1840 (COSTELLARIIDAE)
- callithrix, Dentalium callithrix W.H. Dall, 1889 - syn of: Pertusiconcha callithrix (W.H. Dall, 1889) - (DENTALIIDAE)
- callithrix, Pertusiconcha callithrix (W.H. Dall, 1889) - (ENTALINIDAE)
- Callitomaria, Genus Callitomaria Batten, 1956 (PHYMATOPLEURIDAE) (FOSSIL)
- callitricha, Moellendorffia callitricha A.R.J.B. Bavay & P. Dautzenberg, 1899 - (CAMAENIDAE)
- Callitriche, syn of: Genus Mytilus C. Linnaeus, 1758 (MYTILIDAE)
- Callitricoderma, syn of: Genus Mytilus C. Linnaeus, 1758 (MYTILIDAE)
- Callitrigonia, Genus Callitrigonia Cox, 1964 (TRIGONIIDAE) (FOSSIL)
- callizona, Euhadra callizona (J.C.H. Crosse, 1871) - (BRADYBAENIDAE)
- callizona, Siphonalia callizona J.T. Kuroda & T. Habe in T. Habe, 1961 - (BUCCINIDAE)
- callizona, Bullina callizona K. Sakurai & T. Habe in T. Habe, 1961 - (BULLINIDAE)
- callizona, Cylichna callizona K. Sakurai & T. Habe, 1961 - (CYLICHNIDAE)
- callizona, Alexania callizona (T. Habe, 1961) - (EPITONIIDAE)
- callizona, Helix callizona J.C.H. Crosse, 1871 - syn of: Euhadra callizona (J.C.H. Crosse, 1871) - (HELICIDAE)
- callizona amaliae, Euhadra callizona amaliae (W. Kobelt, 1875) - (BRADYBAENIDAE)
- callizona bicallizona, Siphonalia callizona bicallizona T. Habe, 1961 - (BUCCINIDAE)
- Callizoniceras, Genus Callizoniceras Spath, 1923 (DESMOCERATIDAE) (FOSSIL)
- callizonus, Jokajdon callizonus Unknown - (CHAROPIDAE)
- callizonus, Sinoennea callizonus W.S.S. Van Benthem-Jutting, 1961 - (DIAPHERIDAE)
- Calloarca, Genus Calloarca J.E. Gray, 1857 (ARCIDAE)
- Callocallista, syn of: Genus Callocardia A. Adams, 1864 (VENERIDAE)
- Callocardia, Genus Callocardia A. Adams, 1864 (VENERIDAE)
- Callochiton, Genus Callochiton J.E. Gray, 1847 (CALLOCHITONIDAE)
- CALLOCHITONIDAE Plate, 1901 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]-CHITONIDA [Order]-CHITONINA [Suborder]-CHITONOIDEA [Superfamily])
- Callocochlias, syn of: Genus Calocochlia J.D.W. Hartmann, 1840 (BRADYBAENIDAE)
- Calloconus, syn of: Genus Conus C. Linnaeus, 1758 (CONIDAE)
- Calloconus, Genus Calloconus Perner, 1903 (METOPTOMATIDAE) (FOSSIL)
- Callocoptis, Genus Callocoptis M.L. Jaume & C. de la Torre, 1972 (UROCOPTIDAE)
- callodes, Calocochlia callodes (G.B. I Sowerby, 1840) - (BRADYBAENIDAE)
- Callodix, Genus Callodix C.F. Laseron, 1954 (TORNIDAE)
- Callodonta, Genus Callodonta Isberg, 1934 (MODIOMORPHIDAE) (FOSSIL)
- Callogaza, Genus Callogaza W.H. Dall, 1881 (MARGARITIDAE)
- Callogonia, Genus Callogonia W.H. Dall, 1889 (VESICOMYIDAE)
- Callolima, syn of: Genus Acesta H. Adams & A. Adams, 1858 (LIMIDAE)
- Callolonchaeus, Subgenus Pyramidella (Callolonchaeus) W.H. Dall & P. Bartsch, 1904 (PYRAMIDELLIDAE)
- Callolongchaeus, syn of: Subgenus Pyramidella (Longchaeus) O.A.L. Mφrch, 1875 (PYRAMIDELLIDAE)
- callomarginata, Lucapinella callomarginata (W.H. Dall, 1872) - (FISSURELLIDAE)
- callomoni, Lopatinia callomoni Fursich, 1983 † - (CUCULLAEIDAE) (FOSSIL)
- callomoni, Nassaria callomoni G.T. Poppe, S.P. Tagaro & K. Fraussen, 2008 - (NASSARIIDAE)
- callomoni, Emileites callomoni Yin & D.M. Chandler, 2016 † - (OTOITIDAE) (FOSSIL)
- callomoni, Villania callomoni Géczy, 1998 † - (PHRICODOCERATIDAE) (FOSSIL)
- callomoni, Fulgoraria callomoni N.N. Thach, 2015 - (VOLUTIDAE)
- Callomoniceras, Genus Callomoniceras Meister & Dommergues, 2011 (EODEROCERATIDAE) (FOSSIL)
- callomphala, Lymnaea callomphala (G. Servain, 1881) - (LYMNAEIDAE)
- Callomphala, Genus Callomphala A. Adams & G.F. Angas, 1864 (SKENEIDAE)
- callomphala, Bathymophila callomphala (M.M. Schepman, 1908) - (SOLARIELLIDAE)
- CALLOMPHALIDAE - syn of Family: TURBINIDAE
- callomphalus, Omphaloconus callomphalus (J.R. Bourguignat, 1891) - (ENIDAE)
- Callomysia, Subgenus Barrimysia (Callomysia) T. Habe, 1951 (MONTACUTIDAE)
- Callonaia, Genus Callonaia C.T. Simpson, 1900 (HYRIIDAE)
- Callonema, syn of: Genus Elasmonema Fischer, 1885 (ELASMONEMATIDAE) (FOSSIL)
- Callonia, Genus Callonia J.C.H. Crosse & P. Fischer, 1870 (UROCOPTIDAE)
- callophorella, Phaenomenella callophorella (K. Fraussen, 2004) - (BUCCINIDAE)
- callophyla, Exogyra callophyla H.F.A. von Ihering, 1903 † - (GRYPHAEIDAE) (FOSSIL)
- callopisticus, Euconulus callopisticus (J.R. Bourguignat, 1890) - (EUCONULIDAE)
- Calloplax, Genus Calloplax K.H.J. Thiele, 1909 (CALLISTOPLACIDAE)
- Callopleura, syn of: Genus Cristataria W. von Vest, 1867 (CLAUSILIIDAE)
- callopleura, Lymnaea callopleura É.A.A. Locard, 1883 - syn of: Lymnaea stagnalis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- Callopoma, syn of: Genus Turbo C. Linnaeus, 1758 (TURBINIDAE)
- Calloretinella, Subgenus Oxychilus (Calloretinella) F. Haas, 1934 (OXYCHILIDAE)
- callorhinus, Colus callorhinus (W.H. Dall, 1877) - (BUCCINIDAE)
- callorhinus steinegeri, Colus callorhinus steinegeri (W.H. Dall, 1884) - (BUCCINIDAE)
- callosa, Tornatellina callosa N.H. Odhner, 1922 - (ACHATINELLIDAE)
- callosa, Achatinella callosa L. Pfeiffer, 1857 - syn of: Leptachatina callosa (L. Pfeiffer, 1857) - (ACHATINELLIDAE)
- callosa, Platyla callosa (O. Böttger, 1870 †) - (ACICULIDAE) (FOSSIL)
- callosa, Leptachatina callosa (L. Pfeiffer, 1857) - (AMASTRIDAE)
- callosa, Cernina callosa Sowerby, 1840 † - syn of: Globularia carlei Finlay, 1927 † - (AMPULLINIDAE) (FOSSIL)
- callosa, Dolabella callosa J.B.P.A. Lamarck, 1801 - syn of: Dolabella auricularia (J. Lightfoot, 1786) - (APLYSIIDAE)
- callosa, Wateletia callosa (G.P. Deshayes, 1835 †) - (APORRHAIDAE) (FOSSIL)
- callosa, Anchura callosa J.J.F. Whiteaves, 1903 † - (APORRHAIDAE) (FOSSIL)
- callosa, Aporrhais callosa (K. Roth von Telegd, 1915 †) - (APORRHAIDAE) (FOSSIL)
- callosa, Cassis callosa P.F. Röding, 1798 - syn of: Nassarius gibbosulus (C. Linnaeus, 1758) - (CASSIDAE)
- callosa, Propustularia callosa H.C. Weinkauff, 1881 - syn of: Propustularia surinamensis (Perry, 1811) - (CYPRAEIDAE)
- callosa, Gibberula callosa F.P. Marrat, 1876 - syn of: Gibberula sarcodes (J.R. le B. Tomlin, 1917) - (CYSTISCIDAE)
- callosa, Dendrodoris callosa (L.S.R. Bergh, 1907) - (DENDRODORIDIDAE)
- callosa, Goslineria callosa Á. Valdés, 2001 - (DORIDIDAE)
- callosa, Acrochalix callosa P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- callosa, Gastrochaena callosa R.A. Philippi, 1845 - syn of: Spengleria rostrata (L. Spengler, 1793) - (GASTROCHAENIDAE)
- callosa, Spengleria callosa R.A. Philippi, 1845 - syn of: Spengleria rostrata (L. Spengler, 1793) - (GASTROCHAENIDAE)
- callosa, Gosseletina callosa (de Koninck, 1843 †) - (GOSSELETINIDAE) (FOSSIL)
- callosa, Ludwigella callosa Buckman, 1901 † - syn of: Graphoceras callosum (Buckman, 1901 †) - (GRAPHOCERATIDAE) (FOSSIL)
- callosa, Troschelviana callosa (F. Poey, 1854) - (HELICINIDAE)
- callosa, Radomaniola callosa (M. Paulucci, 1881) - (HYDROBIIDAE)
- callosa, Caucasocressa callosa B. Hausdorf & G. Falkner, 2001 - (HYGROMIIDAE)
- callosa, Styliferina callosa A. Adams, 1870 - (LITIOPIDAE)
- callosa, Gibbolucina callosa (J.B.P.A. Lamarck, 1806 †) - (LUCINIDAE) (FOSSIL)
- callosa, Mangelia callosa (F. Nordsieck, 1977) - (MANGELIIDAE)
- callosa, Marginella callosa F.P. Marrat, 1876 - syn of: Gibberula sarcodes (J.R. le B. Tomlin, 1917) - (MARGINELLIDAE)
- callosa, Melanopsis callosa A. Braun, 1863 † - (MELANOPSIDAE) (FOSSIL)
- callosa, Melanopsis callosa Voltz, 1852 † - syn of: Melanopsis fritzei Thomä, 1845 † - (MELANOPSIDAE) (FOSSIL)
- callosa, Purpura callosa J.B.P.A. Lamarck, 1822 - syn of: Purpura bufo (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- callosa, Purpura callosa G.B. I Sowerby, 1834 - syn of: Cymia tectum (W. Wood, 1828) - (MURICIDAE)
- callosa, Bullia callosa (W. Wood, 1828) - (NASSARIIDAE)
- callosa, Nassa callosa A. Adams, 1852 - syn of: Nassarius fraudulentus (F.P. Marrat, 1877) - (NASSARIIDAE)
- callosa, Natica callosa G.A. Scopoli, 1777 - (NATICIDAE)
- callosa, Nerita callosa Stoppani, 1858 † - syn of: Platychilina cainalloi (Stoppani, 1857 †) - (NERITIDAE) (FOSSIL)
- callosa, Oliva callosa C.C. Li, 1930 - syn of: Americoliva polpasta (P.L. Duclos, 1833) - (OLIVIDAE)
- callosa, Cryptella callosa A. Mousson, 1872 - syn of: Parmacella alegranzae R. Hutterer & K. Groh, 1991 - (PARMACELLIDAE)
- callosa, Pholas dactylus callosa G.L.C.F.D. Cuvier, 1817 - (PHOLADIDAE)
- callosa, Platyostoma lineata callosa (J.W. Hall †) - (PLATYCERATIDAE) (FOSSIL)
- callosa, Vicarya callosa B.W. Jenkins, 1864 † - (POTAMIDIDAE) (FOSSIL)
- callosa, Crassispira callosa (L.C. Kiener, 1839) - (PSEUDOMELATOMIDAE)
- callosa, Vagna callosa E. Saurin, 1959 - (PYRAMIDELLIDAE)
- callosa, Crisilla callosa (A. Manzoni, 1868) - (RISSOIDAE)
- callosa, Rostellaria callosa G.P. Deshayes, 1835 † - syn of: Wateletia callosa (G.P. Deshayes, 1835 †) - (ROSTELLARIIDAE) (FOSSIL)
- callosa, Taita callosa C.R. Laws, 1948 † - (SCAPHANDRIDAE) (FOSSIL)
- callosa, Cylindritopsis callosa Wang, 1980 † - (SOLENISCIDAE) (FOSSIL)
- callosa, Sportella callosa (G.P. Deshayes, 1857 †) - (SPORTELLIDAE) (FOSSIL)
- callosa, Callusaria callosa (J. Marwick, 1924 †) - (STRUTHIOLARIIDAE) (FOSSIL)
- callosa, Proterato callosa (A. Adams & L.A. Reeve, 1850) - (TRIVIIDAE)
- callosa, Stomatella callosa (P. Fischer, 1871) - (TROCHIDAE)
- callosa, Pleurotoma callosa L.C. Kiener, 1839 - syn of: Crassispira callosa (L.C. Kiener, 1839) - (TURRIDAE)
- callosa, Sphenonaias callosa (I. Lea, 1841) - (UNIONIDAE)
- callosa, Anodonta callosa H.C. Küster, 1839 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- callosa, Amiantis callosa (T.A. Conrad, 1837) - (VENERIDAE)
- callosa, Periglypta callosa T.A. Conrad, 1837 - syn of: Amiantis callosa (T.A. Conrad, 1837) - (VENERIDAE)
- callosa, Vertigo callosa (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (VERTIGINIDAE) (FOSSIL)
- callosa communis, Nassa callosa communis P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa compacta, Nassa callosa compacta P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa depressa, Nassa callosa depressa P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa discoidea, Nassa callosa discoidea P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa elongata, Nassa callosa elongata P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa gibba, Nassa callosa gibba P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa globulosa, Nassa callosa globulosa P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa japonica, Vicarya callosa japonica Yabe & K.M. Hatai, 1938 † - (POTAMIDIDAE) (FOSSIL)
- callosa kamieschensis, Nassa callosa kamieschensis P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa lactescens, Nassa callosa lactescens P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa platystoma, Nassa callosa platystoma P.M. Pallary, 1919 - syn of: Cyclope neritea (C. Linnaeus, 1758) - (NASSARIIDAE)
- callosa sulcata, Bullia callosa sulcata G.B. III Sowerby, 1889 - syn of: Bullia callosa (W. Wood, 1828) - (NASSARIIDAE)
- callosana, Parvilucina callosana H.A. Pilsbry & A.A. Olsson, 1941 † - (LUCINIDAE) (FOSSIL)
- callosior, Natica callosior Martin, 1879 † - (NATICIDAE) (FOSSIL)
- callositae, Latiala callositae Ayoub-Hannaa & al., 2015 † - (APORRHAIDAE) (FOSSIL)
- callosiuscula, Platyla callosiuscula A. Andreae, 1904 † - (ACICULIDAE) (FOSSIL)
- callospira, Nassarius callospira (A. Adams, 1852) - (NASSARIIDAE)
- callospira, Nassa callospira A. Adams, 1852 - syn of: Nassarius callospira (A. Adams, 1852) - (NASSARIIDAE)
- callossum, Platyceras callossum J.W. Hall, 1859 † - (PLATYCERATIDAE) (FOSSIL)
- callostoma, Platyla callostoma S. Clessin, 1911 - (ACICULIDAE)
- Callostracon, Genus Callostracon G. Repetto & I. Bianco, 2012 (ACTEONIDAE)
- Callostracum, Genus Callostracum E.A. Smith, 1909 (TURRITELLIDAE)
- callosum, Buccinum callosum W. Wood, 1828 - syn of: Bullia callosa (W. Wood, 1828) - (BUCCINIDAE)
- callosum, Chaetoderma callosum (D. Ivanov, 1984) - (CHAETODERMATIDAE)
- callosum, Vexillum callosum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- callosum, Entolium callosum Lundgren, 1895 † - (ENTOLIIDAE) (FOSSIL)
- callosum, Graphoceras callosum (Buckman, 1901 †) - (GRAPHOCERATIDAE) (FOSSIL)
- callosum, Teinostoma callosum K.H.J. Thiele, 1925 - (TORNIDAE)
- callosus, Cassis callosus P.F. Röding, 1798 - syn of: Nassarius gibbosulus (C. Linnaeus, 1758) - (CASSIDAE)
- callosus, Chaetoderma callosus D. Ivanov, 1984 - syn of: Chaetoderma callosum (D. Ivanov, 1984) - (CHAETODERMATIDAE)
- callosus, Euphemites callosus Weller, 1930 † - (EUPHEMITIDAE) (FOSSIL)
- callosus, Lithoglyphus callosus Š. Brusina, 1897 † - (LITHOGLYPHIDAE) (FOSSIL)
- callosus, Potamolithus callosus H.A. Pilsbry, 1926 - (LITHOGLYPHIDAE)
- callosus, Scabrotrophon callosus (S. Nomura & K.M. Hatai, 1940) - (MURICIDAE)
- callosus, Nassarius callosus A. Adams, 1877 - syn of: Nassarius fraudulentus (F.P. Marrat, 1877) - (NASSARIIDAE)
- callosus, Theodoxus callosus G.P. Deshayes, 1835 - syn of: Theodoxus varius callosus (G.P. Deshayes, 1835) - (NERITIDAE)
- callosus, Theodoxus varius callosus (G.P. Deshayes, 1835) - (NERITIDAE)
- callosus, Pecten callosus Lundgren, 1895 † - syn of: Entolium callosum Lundgren, 1895 † - (PECTINIDAE) (FOSSIL)
- callosus, Solen callosus A.G. Olivi, 1792 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SOLENIDAE)
- callosus, Soleniscus callosus E.K. Yoo, 1988 † - (SOLENISCIDAE) (FOSSIL)
- callosus, Strombus callosus G.P. Deshayes, 1835 † - syn of: Wateletia callosa (G.P. Deshayes, 1835 †) - (STROMBIDAE) (FOSSIL)
- callothyra, Agladrillia callothyra W.P. Woodring, 1928 † - (DRILLIIDAE) (FOSSIL)
- calloti, Moitessieria calloti H. Girardi, 2004 - (MOITESSIERIIDAE)
- Callotrochus, Genus Callotrochus Kutassy, 1938 (CALLIOSTOMATIDAE) (FOSSIL)
- callovensis, Turnus callovensis Pandey & al. 1996 † - (MYIDA (UNASSIGNED)) (FOSSIL)
- calloviana, Bathrotomaria calloviana Das & al., 2005 † - (PLEUROTOMARIIDAE) (FOSSIL)
- calloviana, Teutonica calloviana Grundel, 2001 † - (POLYGYRINIDAE) (FOSSIL)
- calloviana, Buvignieria calloviana J. Gründel, 1998 † - (RISSOINIDAE) (FOSSIL)
- calloviense, Cenoceras calloviense (Oppel, 1858 †) - (CENOCERATIDAE) (FOSSIL)
- calloviense, Sigaloceras calloviense (J. de C. Sowerby, 1815 †) - (KOSMOCERATIDAE) (FOSSIL)
- calloviense, Paracenoceras calloviense (Oppel, 1858 †) - (PARACENOCERATIDAE) (FOSSIL)
- calloviensis, Angulathilda calloviensis (Grundel, 1997 †) - (MATHILDIDAE) (FOSSIL)
- calloviensis, Nautilus calloviensis Oppel, 1858 † - syn of: Paracenoceras calloviense (Oppel, 1858 †) - (NAUTILIDAE) (FOSSIL)
- Callpita, Genus Callpita M. Huber, 2010 (VENERIDAE)
- Callucina, Genus Callucina W.H. Dall, 1901 (LUCINIDAE)
- Callucinella, Subgenus Parvilucina (Callucinella) A.L. Chavan, 1961 (LUCINIDAE) (FOSSIL)
- Callucinopsis, Subgenus Callucina (Callucinopsis) A.L. Chavan, 1959 (LUCINIDAE)
- Callumbonella, Genus Callumbonella K.H.J. Thiele, 1924 (TROCHIDAE)
- Callunea, syn of: Genus Helix C. Linnaeus, 1758 (HELICIDAE)
- callusa, Circlotoma callusa C.F. Laseron, 1958 - (TORNIDAE)
- Callusaria, Genus Callusaria Finlay, 1927 (STRUTHIOLARIIDAE) (FOSSIL)
- callyglypta, Gonilia callyglypta W.H. Dall, 1903 - syn of: Gonilia calliglypta (W.H. Dall, 1903) - (ASTARTIDAE)
- callypsoe, Volvarina callypsoe J. Espinosa & J.A. Ortea, 2015 - (MARGINELLIDAE)
- callytharraensis, Euchondria callytharraensis Dickins, 1963 † - (EUCHONDRIIDAE) (FOSSIL)
- Calma, Genus Calma J. Alder & A. Hancock, 1855 (CALMIDAE)
- calmani, Lyrodus calmani G.F. Roch, 1931 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- calmeilii, Buccinum calmeilii B.C.M. Payraudeau, 1827 † - syn of: Tritia corniculum (A.G. Olivi, 1792 †) - (BUCCINIDAE) (FOSSIL)
- Calmella, Genus Calmella C.N.E. Eliot, 1906 (FLABELLINIDAE)
- CALMIDAE Iredale & ODonoghue, 1923 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-FIONOIDEA [Superfamily])
- calmoni, Callucinopsis calmoni (Pervinquière, 1912 †) - (LUCINIDAE) (FOSSIL)
- calnani, Xenodiscoides calnani Tozer, 1994 † - (XENOCELTITIDAE) (FOSSIL)
- calnensis, Pinna calnensis Arkell † - (PINNIDAE) (FOSSIL)
- calobapta, Chrysallis calobapta (I.H. Jonas, 1843) - (BRADYBAENIDAE)
- calobapta sibuyanica, Chrysallis calobapta sibuyanica O.F. von Möllendorff, 1898 - (BRADYBAENIDAE)
- calobapta tablasensis, Chrysallis calobapta tablasensis (W. Kobelt, 1916) - (BRADYBAENIDAE)
- Calobates, syn of: Genus Bactronophorus C.M. Tapparone-Canefri, 1877 (TEREDINIDAE)
- Caloceras, Genus Caloceras Donovan, 1956 (PSILOCERATIDAE) (FOSSIL)
- Calocochilia, syn of: Genus Calocochlia J.D.W. Hartmann, 1840 (BRADYBAENIDAE)
- Calocochlea, syn of: Genus Calocochlia J.D.W. Hartmann, 1840 (BRADYBAENIDAE)
- Calocochlia, Genus Calocochlia J.D.W. Hartmann, 1840 (BRADYBAENIDAE)
- Calocyrtoceras, Genus Calocyrtoceras Foerste, 1936 (PARAPHRAGMITIDAE) (FOSSIL)
- caloderma, Pierosoma caloderma (H.A. Pilsbry, 1923) - (PLANORBIDAE)
- calodinota, Ziba calodinota (S.S. Berry, 1960) - (MITRIDAE)
- Calodiona, Subgenus Melanopsis (Calodiona) Stefanescu, 1896 (MELANOPSIDAE) (FOSSIL)
- Calodisculus, Genus Calodisculus Rehder, 1935 (ARCHITECTONICIDAE) (FOSSIL)
- Calodisculus, syn of: Genus Pseudotorinia F. Sacco, 1892 (ARCHITECTONICIDAE)
- Calodiscus, Subgenus Pleuromalaxis (Calodiscus) H.A. Rehder, 1934 (TORNIDAE)
- calodius, Spirotropis calodius E.W.J. Moore, 1963 † - (DRILLIIDAE) (FOSSIL)
- Calogoniodiscus, Subgenus Discus (Calogoniodiscus) G.J. Pfeffer, 1929 (DISCIDAE)
- caloi, Joculator caloi A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- caloosae, Varicorbula caloosae (W.H. Dall, 1898 †) - (CORBULIDAE) (FOSSIL)
- caloosaense, Dentalium caloosaense W.H. Dall, 1892 † - (DENTALIIDAE) (FOSSIL)
- caloosaensis, Cerithioclava caloosaensis (W.H. Dall, 1892) - (CERITHIIDAE)
- caloosaensis, Anachis caloosaensis (W.H. Dall, 1890 †) - (COLUMBELLIDAE) (FOSSIL)
- caloosaensis, Cyrenoida caloosaensis Dall † - (CYRENOIDIDAE) (FOSSIL)
- caloosaensis, Heilprinia caloosaensis (A. Heilprin, 1887 †) - (FASCIOLARIIDAE) (FOSSIL)
- caloosaensis, Diodora caloosaensis W.H. Dall, 1892 † - (FISSURELLIDAE) (FOSSIL)
- caloosaensis, Miltha caloosaensis W.H. Dall, 1898 † - (LUCINIDAE) (FOSSIL)
- caloosaensis, Nodipecten caloosaensis W.H. Dall, 1898 † - (PECTINIDAE) (FOSSIL)
- caloosaensis, Unio caloosaensis W.H. Dall, 1898 - syn of: Elliptio jayensis I. Lea, 1838 - (UNIONIDAE)
- caloosaensis malcolmi, Heilprinia caloosaensis malcolmi Ward & B.W. Blackwelder, 1987 † - (FASCIOLARIIDAE) (FOSSIL)
- caloosahatcheensis, Sinistrofulgur caloosahatcheensis E.J. Petuch, 1994 † - (BUSYCONIDAE) (FOSSIL)
- caloosahatcheensis, Melongena caloosahatcheensis E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- caloosahatcheensis, Mitra caloosahatcheensis E.J. Petuch, 1991 † - (MITRIDAE) (FOSSIL)
- caloosahatcheensis, Modulus caloosahatcheensis E.J. Petuch, 1994 † - (MODULIDAE) (FOSSIL)
- caloosahatchiensis, Pustulatirus caloosahatchiensis (W.G. Lyons, 1991 †) - (FASCIOLARIIDAE) (FOSSIL)
- caloosahatchiensis, Ficus caloosahatchiensis (B. Smith, 1907 †) - (FICIDAE) (FOSSIL)
- Caloosalaba, syn of: Genus Finella A. Adams, 1860 (SCALIOLIDAE)
- Caloosalba, Subgenus Alabina (Caloosalba) Olsson & Harbison, 1953 (CERITHIIDAE) (FOSSIL)
- caloosana, Limaria caloosana W.H. Dall, 1898 † - (LIMIDAE) (FOSSIL)
- caloosana, Marginella caloosana A.A. Olsson & A. Harbison, 1953 † - (MARGINELLIDAE) (FOSSIL)
- caloosana, Cymia caloosana Tucker & Wilson, 1933 - syn of: Stramonita floridana (T.A. Conrad, 1837) - (MURICIDAE)
- caloosana, Anomalocardia caloosana (W.H. Dall, 1900 †) - (VENERIDAE) (FOSSIL)
- Caloosarca, syn of: Genus Anadara J.E. Gray, 1847 (ARCIDAE)
- caloosensis, Chlamys caloosensis W.C. Mansfield, 1939 † - (PECTINIDAE) (FOSSIL)
- calophana, Carpathica calophana (C.A. Westerlund, 1881) - (OXYCHILIDAE)
- calophorus, Cryptoconus calophorus (G.P. Deshayes, 1834 †) - (CONIDAE) (FOSSIL)
- Calophos, Genus Calophos Woodring, 1964 (NASSARIIDAE) (FOSSIL)
- calophylla, Bassina calophylla R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- calophylla, Periglypta calophylla R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- calophylla, Venus calophylla R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- calophylla, Clausinella calophylla R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- calophylla, Chione calophylla R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- calophyllum, Placamen lamellatum calophyllum (R.A. Philippi, 1846) - (VENERIDAE)
- calophyllus, Circomphalus calophyllus R.A. Philippi, 1836 - syn of: Placamen lamellatum (P.F. Röding, 1798) - (VENERIDAE)
- Calopia, Genus Calopia W.F. Ponder, 1999 (CALOPIIDAE)
- CALOPIIDAE Ponder, 1999 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- calopleura, Cristataria strangulata calopleura (C.A. Westerlund, 1892) - (CLAUSILIIDAE)
- Caloplisma, syn of: Subgenus Helicina (Tristramia) J.C.H. Crosse, 1863 (HELICINIDAE)
- Caloplocamus, syn of: Genus Kaloplocamus L.S.R. Bergh, 1892 (POLYCERIDAE)
- Calopodium, syn of: Genus Pandora J.H. Chemnitz, 1795 (PANDORIDAE)
- calopoma, Alycaeus calopoma E.C. Von Martens & K.H.J. Thiele, 1908 - (CYCLOPHORIDAE)
- calopthalma, Erosaria calopthalma J.C. Melvill, 1888 - syn of: Erosaria ocellata (C. Linnaeus, 1758) - (CYPRAEIDAE)
- caloptyx, Hemizaptyx caloptyx (H.A. Pilsbry, 1902) - (CLAUSILIIDAE)
- caloptyx subtilis, Hemizaptyx caloptyx subtilis S. Kato, 1979 - (CLAUSILIIDAE)
- caloramans, Amauropsis caloramans C.J. Maury, 1912 † - (NATICIDAE) (FOSSIL)
- caloraphe, Greenwoodoconcha caloraphe H.B. Preston, 1913 - (EUCONULIDAE)
- Calorebama, syn of: Genus Sulcobuccinum D'Orbigny, 1850 (PSEUDOLIVIDAE) (FOSSIL)
- Calorhadia, Genus Calorhadia Stewart, 1930 (NUCULANIDAE) (FOSSIL)
- Caloria, Genus Caloria S. Trinchese, 1888 (FACELINIDAE)
- Caloscala, syn of: Genus Cirsotrema O.A.L. Mφrch, 1852 (EPITONIIDAE)
- calosoma, Cheilotoma calosoma (Laube, 1868 †) - (MURCHISONIIDAE) (FOSSIL)
- calosoma, Oliva calosoma P.L. Duclos, 1840 - syn of: Oliva avellana J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- Calostropha, Genus Calostropha Ancey, 1887 (TROCHOMORPHIDAE)
- Calostrophia, Genus Calostrophia C.M.F. Ancey, 1887 (TROCHOMORPHIDAE)
- Calotrophon, Genus Calotrophon L.G. Hertlein & A. Strong, 1951 (MURICIDAE)
- Calotropis, syn of: Genus Maurea W.R.B. Oliver, 1926 (CALLIOSTOMATIDAE)
- caloundra, Mactra caloundra T. Iredale, 1930 - syn of: Austromactra contraria (L.A. Reeve, 1854) - (MACTRIDAE)
- caloundra, Nuculana caloundra T. Iredale, 1929 - (NUCULANIDAE)
- caloundra, Phasianella caloundra T. Iredale, 1927 - (PHASIANELLIDAE)
- caloundra, Nanaphora caloundra C.F. Laseron, 1958 - (TRIPHORIDAE)
- caloxesta, Mitra caloxesta J.C. Melvill, 1888 - syn of: Pusia caloxestum (J.C. Melvill, 1888) - (MITRIDAE)
- caloxestum, Pusia caloxestum (J.C. Melvill, 1888) - (COSTELLARIIDAE)
- calpeana, Oestophora calpeana (P.M.A. Morelet, 1852) - (TRISSEXODONTIDAE)
- calphurnia, Lophonema calphurnia (Billings, 1865 †) - (HELICOTOMIDAE) (FOSSIL)
- calpica, Chondrina calpica (C.A. Westerlund, 1872) - (CHONDRINIDAE)
- Calpitaria, Subgenus Pitar (Calpitaria) A.J. Jukes-Browne, 1908 (VENERIDAE) (FOSSIL)
- calpix, Moerella calpix Gardner, 1943 † - (TELLINIDAE) (FOSSIL)
- Calpurna, syn of: Genus Simnia A. Risso, 1826 (OVULIDAE)
- Calpurnus, Genus Calpurnus P.D. Montfort, 1810 (OVULIDAE)
- calquierensis, Bythinella calquierensis H. Girardi & H.D. Boeters, 2015 - (BYTHINELLIDAE)
- Calstevenus, Genus Calstevenus Yancey, 1973 (GADILIDAE) (FOSSIL)
- caltabellottensis, Murella globularis caltabellottensis (W. Kobelt, 1890) - (HELICIDAE)
- calteriana, Carinathilda calteriana Grundel, 1997 † - (MATHILDIDAE) (FOSSIL)
- Calthalotia, Genus Calthalotia T. Iredale, 1929 (TROCHIDAE)
- calumnior, Sinezona calumnior D.L. Geiger, 2012 - (SCISSURELLIDAE)
- calumnus, Rostanga calumnus W.B. Rudman & G.J. Avern, 1989 - syn of: Rostanga calumus W.B. Rudman & G.J. Avern, 1989 - (DISCODORIDIDAE)
- calumus, Rostanga calumus W.B. Rudman & G.J. Avern, 1989 - (DISCODORIDIDAE)
- calus, Eumecostylus calus (E.A. Smith, 1891) - (BOTHRIEMBRYONTIDAE)
- calus, Sigmataxis calus H.A. Pilsbry, 1907 - (OLEACINIDAE)
- calus, Strophocheilus calus H.A. Pilsbry, 1901 - (STROPHOCHEILIDAE)
- calusa, Cantharus calusa E.J. Petuch, 1994 † - (BUCCINIDAE) (FOSSIL)
- calusa, Cancellaria calusa E.J. Petuch, 1994 † - (CANCELLARIIDAE) (FOSSIL)
- calusa, Conus calusa M.J. Abbott, 1988 † - (CONIDAE) (FOSSIL)
- calusa, Terebraspira calusa E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- calusa, Fasciolaria calusa E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- calusa, Trochomodulus calusa (E.J. Petuch, 1988) - (MODULIDAE)
- calusa, Eupleura calusa E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- calusa, Tegula calusa E.J. Petuch, 1994 † - (TEGULIDAE) (FOSSIL)
- calusa, Polystira calusa E.J. Petuch, 1994 † - (TURRIDAE) (FOSSIL)
- calusa foxhalli, Trochomodulus calusa foxhalli R.F. Myers, 2014 - syn of: Trochomodulus calusa (E.J. Petuch, 1988) - (MODULIDAE)
- Calusaconus, Genus Calusaconus Petuch, 2004 (CONIDAE) (FOSSIL)
- Calusacypraea, Genus Calusacypraea Petuch , 1996 (CYPRAEIDAE) (FOSSIL)
- calva, Cyclocardia calva R. Tate, 1887 - (CARDITIDAE)
- calva, Retizafra calva (J.C. Verco, 1910) - (COLUMBELLIDAE)
- calva, Sinoennea calva (P. Dautzenberg, 1893) - (DIAPHERIDAE)
- calva, Doris calva (C.N.E. Eliot, 1903) - (DORIDIDAE)
- calva, Euryzone calva J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- calva, Helix calva W. Kobelt, 1876 - syn of: Campylaea planospira setulosa (Briganti, 1825) - (HELICIDAE)
- calva, Myllita calva C.F. Laseron, 1956 - (LASAEIDAE)
- calva, Cytora calva (F.W. Hutton, 1882) - (LIAREIDAE)
- calva, Koloonella calva (C.F.C. Schander, 1994) - (MURCHISONELLIDAE)
- calva, Phenacolepas calva J.C. Verco, 1906 - (PHENACOLEPADIDAE)
- calva, Philine calva J. van der Linden, 1995 - (PHILINIDAE)
- calva, Parapholas calva (G.B. I Sowerby, 1834) - (PHOLADIDAE)
- calva, Pholas calva G.B. I Sowerby, 1834 - syn of: Parapholas calva (G.B. I Sowerby, 1834) - (PHOLADIDAE)
- calva, Eulimella calva C.F.C. Schander, 1994 - syn of: Koloonella calva (C.F.C. Schander, 1994) - (PYRAMIDELLIDAE)
- calva, Triphora calva M.J. Faber & R.G. Moolenbeek, 1991 - (TRIPHORIDAE)
- calva, Trochaclis calva B.A. Marshall, 1995 - (TROCHACLIDIDAE)
- Calva, Genus Calva Popenoe, 1837 (VENERIDAE) (FOSSIL)
- calva, Alcithoe calva A.W.B. Powell, 1924 - syn of: Alcithoe jaculoides calva A.W.B. Powell, 1924 - (VOLUTIDAE)
- calva, Alcithoe jaculoides calva A.W.B. Powell, 1924 - (VOLUTIDAE)
- calva nana, Pholas calva nana G.B. I Sowerby, 1834 - syn of: Parapholas calva (G.B. I Sowerby, 1834) - (PHOLADIDAE)
- Calvadosiella, Genus Calvadosiella Wenz, 1939 (RISSOIDAE) (FOSSIL)
- Calvaentolium, Genus Calvaentolium Romanov, 1985 (PTERIIDA (UNASSIGNED)) (FOSSIL)
- calvariella, Trivia calvariella R.N. Kilburn, 1980 - syn of: Triviella calvariola R.N. Kilburn, 1980 - (TRIVIIDAE)
- calvariola, Triviella calvariola R.N. Kilburn, 1980 - (TRIVIIDAE)
- calvata, Dominamaria calvata (A. Wiktor, 1998) - (ASSIMINEIDAE)
- calvata, Batteniella calvata Mawson & al., 2002 † - (LOPHOSPIRIDAE) (FOSSIL)
- calvatus, Canopoconus calvatus Luo & al., 1982 † - (MAIKHANELLIDAE) (FOSSIL)
- calvatus, Eburneopecten calvatus (Morton, 1833 †) - (PECTINIDAE) (FOSSIL)
- calveriola, Trivia calveriola R.N. Kilburn, 1980 - syn of: Triviella calvariola R.N. Kilburn, 1980 - (TRIVIIDAE)
- calvertana, Siphonalia calvertana Martin, 1904 † - (BUCCINIDAE) (FOSSIL)
- calvertanum, Calliostoma calvertanum Martin, 1904 † - (CALLIOSTOMATIDAE) (FOSSIL)
- calvertense, Kamerunoceras calvertense Powell, 1963 † - (ACANTHOCERATIDAE) (FOSSIL)
- calvertense, Caecum calvertense Martin, 1904 † - (CAECIDAE) (FOSSIL)
- calvertense, Teinostoma calvertense Martin, 1904 † - (TORNIDAE) (FOSSIL)
- calvertensis, Acteon calvertensis Martin, 1904 † - (ACTEONIDAE) (FOSSIL)
- calvertensis, Astarte calvertensis L.C. Glenn, 1904 † - (ASTARTIDAE) (FOSSIL)
- calvertensis, Busycotypus calvertensis E.J. Petuch, 1989 † - syn of: Busycotypus scalarispira (T.A. Conrad, 1863 †) - (BUSYCONIDAE) (FOSSIL)
- calvertensis, Marianarona calvertensis (Martin, 1904 †) - (CANCELLARIIDAE) (FOSSIL)
- calvertensis, Cerithiopsis calvertensis Martin, 1904 † - (CERITHIOPSIDAE) (FOSSIL)
- calvertensis, Columbella calvertensis Martin, 1904 † - (COLUMBELLIDAE) (FOSSIL)
- calvertensis, Cylichna calvertensis Martin, 1904 † - (CYLICHNIDAE) (FOSSIL)
- calvertensis, Opalia calvertensis Martin, 1904 † - (EPITONIIDAE) (FOSSIL)
- calvertensis, Mariafusus calvertensis (Martin, 1904 †) - (FASCIOLARIIDAE) (FOSSIL)
- calvertensis, Erycina calvertensis L.C. Glenn, 1904 † - (LASAEIDAE) (FOSSIL)
- calvertensis, Marginella calvertensis Martin, 1904 † - (MARGINELLIDAE) (FOSSIL)
- calvertensis, Dicranodesma calvertensis L.C. Glenn, 1904 † - (MONTACUTIDAE) (FOSSIL)
- calvertensis, Nassa calvertensis Martin, 1904 † - (MURICIDAE) (FOSSIL)
- calvertensis, Sediliopsis calvertensis (Martin, 1904 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- calvertensis, Pyrgulina calvertensis Martin, 1904 † - (PYRAMIDELLIDAE) (FOSSIL)
- calvertensis, Chesaclava calvertensis (Martin, 1904 †) - (TURRIDAE) (FOSSIL)
- calvertensis, Petricola calvertensis W.H. Dall, 1900 † - (VENERIDAE) (FOSSIL)
- calvertensium, Cerastoderma calvertensium L.C. Glenn, 1904 † - (CARDIIDAE) (FOSSIL)
- calverti, Pseudoguppya calverti (H.A. Pilsbry, 1920) - (EUCONULIDAE)
- calverti, Mutelina calverti G. Servain, 1890 - syn of: Mutela rostrata (P.C.A.S.L. Rang, 1835) - (IRIDINIDAE)
- calverti, Uncancylus calverti H.A. Pilsbry, 1920 - (PLANORBIDAE)
- calverti, Viviparus calverti M. von Neumayr, 1880 † - (VIVIPARIDAE) (FOSSIL)
- Calvertia, Subgenus Theodoxus (Calvertia) Ludlow, 1909 (NERITIDAE) (FOSSIL)
- calvertiana, Corbicula calvertiana P.M. Pallary, 1924 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- Calvertitella, Genus Calvertitella Petuch, 1988 (TURRITELLIDAE) (FOSSIL)
- Calverturris, Genus Calverturris E.J. Petuch, 1993 (TURRIDAE) (FOSSIL)
- calvescens, Stenotrema calvescens L.R. Hubricht, 1961 - (POLYGYRIDAE)
- Calvibembexia, Genus Calvibembexia Blodgett & al., 1999 (GOSSELETINIDAE) (FOSSIL)
- Calvigenia, Genus Calvigenia T. Iredale, 1938 (CAMAENIDAE)
- calvimontana, Borsonia calvimontana G.P. Deshayes, 1865 † - (BORSONIIDAE) (FOSSIL)
- calvimontana, Neverita calvimontana G.P. Deshayes, 1864 † - (NATICIDAE) (FOSSIL)
- calvimontana, Aviculoperna calvimontana (G.P. Deshayes, 1858 †) - (PTERIIDAE) (FOSSIL)
- calvimontana, Pitar calvimontana G.P. Deshayes, 1857 † - (VENERIDAE) (FOSSIL)
- calvimontanus, Conus calvimontanus Deshayes, 1865 † - (CONIDAE) (FOSSIL)
- calvimontena, Cordieria calvimontena G.P. Deshayes, 1865 - syn of: Cordieria calvimontensis G.P. Deshayes, 1865 - (BORSONIIDAE)
- calvimontensis, Cordieria calvimontensis G.P. Deshayes, 1865 - (BORSONIIDAE)
- calvimontensis, Janiopsis calvimontensis (A.E.M. Cossmann, 1889 †) - (BUCCINIDAE) (FOSSIL)
- calvimontensis, Pseudoneptunea calvimontensis A.E.M. Cossmann, 1889 † - syn of: Janiopsis calvimontensis (A.E.M. Cossmann, 1889 †) - (BUCCINIDAE) (FOSSIL)
- calvimontensis, Latirus calvimontensis A.E.M. Cossmann, 1889 † - syn of: Janiopsis calvimontensis (A.E.M. Cossmann, 1889 †) - (FASCIOLARIIDAE) (FOSSIL)
- calvimontensis, Angulithes calvimontensis Bede, 1948 † - (HERCOGLOSSIDAE) (FOSSIL)
- calvimontensis, Jania calvimontensis (A.E.M. Cossmann, 1889 †) - (MURICIDAE) (FOSSIL)
- calvinabbasi, Amphidromus calvinabbasi N.N. Thach, 2017 - (CAMAENIDAE)
- calvini, Ctenodonta calvini Ulrich, 1894 † - (CTENODONTIDAE) (FOSSIL)
- calvini, Endoceras calvini Ulrich & al., 1944 † - (ENDOCERATIDAE) (FOSSIL)
- calvini, Turbonilla calvini W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- calvitia, Setobaudinia calvitia G.A. Solem, 1985 - (CAMAENIDAE)
- calvitia, Semitrivia calvitia Fehse, 2017 - (TRIVIIDAE)
- Calvitium, syn of: Genus Mysella G.F. Angas, 1877 (MONTACUTIDAE)
- Calvitium, syn of: Genus Mysella G.F. Angas, 1877 (MONTACUTIDAE)
- calvula, Diplommatina calvula J.J. Vermeulen, 1993 - (DIPLOMMATINIDAE)
- calvus, Naesiotus calvus (G.B. I Sowerby, 1833) - (BULIMULIDAE)
- calvus, Caseolus calvus (R.T. Lowe, 1831) - (HYGROMIIDAE)
- calvus, Murex calvus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- calvus, Tulites calvus (S.S. Buckman, 1921 †) - (TULITIDAE) (FOSSIL)
- calvus caryonis, Naesiotus calvus caryonis W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- calvus galeatus, Caseolus calvus galeatus (R.T. Lowe, 1862) - (HYGROMIIDAE)
- calvus veternus, Caseolus calvus veternus (T.D.A. Cockerell, 1922) - (HYGROMIIDAE)
- calxequina, Mauritia mauritiana calxequina (J.C. Melvill & R. Standen, 1899) - (CYPRAEIDAE)
- Calybium, Subgenus Geotrochatella (Calybium) L.J. Morlet, 1891 (HELICINIDAE)
- Calycia, Genus Calycia H. Adams, 1865 (CAMAENIDAE)
- CALYCIDORIDIDAE Roginskaya, 1972 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-ONCHIDORIDOIDEA [Superfamily])
- Calycidoris, Genus Calycidoris F.D. Abraham, 1876 (CALYCIDORIDIDAE)
- Calycoceras, Genus Calycoceras Hyatt , 1900 (ACANTHOCERATIDAE) (FOSSIL)
- calyculaeformis, Cardita calyculaeformis E.C. Von Martens, 1880 - syn of: Cardita caliculaeformis G.P. Deshayes in L. Maillard, 1863 - (CARDITIDAE)
- calyculata, Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata, Cardita calyculata I. von Born, 1778 - syn of: Cardita variegata (J.G. Bruguière, 1792) - (CARDITIDAE)
- calyculata, Chama calyculata C. Linnaeus, 1758 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CHAMIDAE)
- calyculata, Diodora calyculata (G.B. I Sowerby, 1823) - (FISSURELLIDAE)
- calyculata, Smaragdinella calyculata (W.J. Broderip & G.B. I Sowerby, 1829) - (HAMINOEIDAE)
- calyculata, Sphaerium calyculata J.P.R. Draparnaud, 1805 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- calyculata compressa, Cyclas calyculata compressa A.T. von Middendorff, 1851 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- calyculata decurtata, Cardita calyculata decurtata T.A. de M. Monterosato, 1884 - (CARDITIDAE)
- calyculata imperans, Cardita calyculata imperans A. De Gregorio, 1885 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata inflata, Cyclas calyculata inflata A.T. von Middendorff, 1851 - syn of: Sphaerium asiaticum (E.C. Von Martens, 1864) - (SPHAERIIDAE)
- calyculata oblonga, Cardita calyculata oblonga M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1892 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata oblonga, Cardita calyculata oblonga E. Réquien, 1848 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata obsoleta, Cardita calyculata obsoleta P.M. Pallary, 1938 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata obsoleta, Cardita calyculata obsoleta P. Dautzenberg, 1883 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata obtusata, Cardita calyculata obtusata E. Réquien, 1848 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata obtusata, Cardita calyculata obtusata M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1892 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata pita, Cardita calyculata pita A. De Gregorio, 1885 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata senegalensis, Cardita calyculata senegalensis L.A. Reeve, 1843 - syn of: Cardita senegalensis L.A. Reeve, 1843 - (CARDITIDAE)
- calyculata tirisa, Cardita calyculata tirisa A. De Gregorio, 1885 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculata unicolor, Cardita calyculata unicolor M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1892 - syn of: Cardita calyculata (C. Linnaeus, 1758) - (CARDITIDAE)
- calyculatum, Pisidium calyculatum D. Dupuy, 1849 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- calyculatus, Lithophagus calyculatus P.P. Carpenter, 1857 - syn of: Leiosolenus mucronatus (R.A. Philippi, 1846) - (MYTILIDAE)
- Calyculina, syn of: Genus Sphaerium J.A. Scopoli, 1777 (SPHAERIIDAE)
- calyculus, Monilea calyculus (W. Wood, 1828) - (TROCHIDAE)
- Calygirtyoceras, Genus Calygirtyoceras Korn & al., 1999 (GIRTYOCERATIDAE) (FOSSIL)
- Calymna, syn of: Genus Flammulina E.C. Von Martens, 1873 (CHAROPIDAE)
- Calypeopsis, syn of: Genus Crucibulum H.C.F. Schumacher, 1817 (CALYPTRAEIDAE)
- calypigos, Sinanodonta woodiana calypigos (W. Kobelt, 1879) - (UNIONIDAE)
- calypso, Ampelita calypso (L. Pfeiffer, 1861) - (ACAVIDAE)
- calypso, Bucanopsis calypso J. Perner, 1903 † - syn of: Bucanopsina calypso (J. Perner, 1903 †) - (BELLEROPHONTIDAE) (FOSSIL)
- calypso, Bucanopsina calypso (J. Perner, 1903 †) - (BUCANIIDAE) (FOSSIL)
- calypso, Euthria calypso R. von Cosel & L.P. Burnay, 1983 - (BUCCINIDAE)
- calypso, Fissurella calypso F. Salvat, 1967 - syn of: Fissurella alabastrites L.A. Reeve, 1849 - (FISSURELLIDAE)
- calypso, Euzone calypso (Laube, 1868 †) - (GOSSELETINIDAE) (FOSSIL)
- calypso, Tripoplax calypso K.B. Clark, 2008 - (ISCHNOCHITONIDAE)
- calypso, Cyclostrema calypso J.C. Melvill & R. Standen, 1912 - syn of: Brookula calypso (J.C. Melvill & R. Standen, 1912) - (LIOTIIDAE)
- calypso, Opisthoteuthis calypso R. Villanueva, M.A. Collins, P. Sánchez & N.A. Voss, 2002 - (OPISTHOTEUTHIDAE)
- calypso, Partula calypso C.G. Semper, 1865 - (PARTULIDAE)
- calypso, Brookula calypso (J.C. Melvill & R. Standen, 1912) - (SEGUENZIOIDEA (UNASSIGNED))
- calypso, Solemya calypso Walton, 2015 - (SOLEMYIDAE)
- calypso, Carinacanthites calypso (Mojsisovics, 1893 †) - (TIBETITIDAE) (FOSSIL)
- calypso, Cryptogemma calypso W.H. Dall, 1919 - (TURRIDAE)
- calypso intensior, Ampelita calypso intensior H.A. Pilsbry - (ACAVIDAE)
- calypsonis, Prunum calypsonis C.J. Maury, 1925 † - (MARGINELLIDAE) (FOSSIL)
- calypsonis, Triphora calypsonis C.J. Maury, 1917 † - (TRIPHORIDAE) (FOSSIL)
- calypta, Tricolia calypta W.P. Woodring, 1957 † - (PHASIANELLIDAE) (FOSSIL)
- Calyptoconcha, Genus Calyptoconcha P. Bouchet & A. Warιn, 1993 (VELUTINIDAE)
- Calyptogena, Genus Calyptogena W.H. Dall, 1891 (VESICOMYIDAE)
- Calyptoliva, Genus Calyptoliva Y.I. Kantor & P. Bouchet, 2007 (OLIVIDAE)
- Calyptolivinae, Genus Calyptolivinae Kantor, Fedosov, Puillandre, Bonillo & Bouchet, 2017 (OLIVIDAE)
- Calyptopholas, Subgenus Aspidopholas (Calyptopholas) Ι. Lamy, 1927 (PHOLADIDAE)
- Calyptoplax, Genus Calyptoplax F.G. Thompson (XANTHONYCHIDAE)
- CALYPTOPTOMATIDA (UNASSIGNED) - Family (HYOLITHA-CALYPTOPTOMATIDA [Order]) (FOSSIL)
- Calyptra, syn of: Genus Cheilea Modeer, 1793 (HIPPONICIDAE)
- Calyptraea, Genus Calyptraea J.B.P.A. Lamarck, 1799 (CALYPTRAEIDAE)
- calyptraea, Trochus calyptraea (Salter) † - (TROCHIDAE) (FOSSIL)
- calyptraeaformis, Trochita calyptraeaformis auct - syn of: Trochita trochiformis (I. von Born, 1778) - (CALYPTRAEIDAE)
- calyptraeformis, Sigapatella calyptraeformis (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- calyptraeformis, Calyptraea calyptraeformis J.B.P.A. Lamarck, 1822 - syn of: Sigapatella calyptraeformis (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- calyptraeformis, Trochus calyptraeformis J.B.P.A. Lamarck, 1822 - syn of: Sigapatella calyptraeformis (J.B.P.A. Lamarck, 1822) - (TROCHIDAE)
- CALYPTRAEIDAE Lamarck, 1809 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-CALYPTRAEOIDEA [Superfamily])
- calyptraeiformis, Bostrycapulus calyptraeiformis (G.P. Deshayes, 1830) - (CALYPTRAEIDAE)
- Calyptraphorus, Genus Calyptraphorus Conrad, 1857 (ROSTELLARIIDAE) (FOSSIL)
- calyptrata, Palaeoscurria calyptrata J. Perner, 1903 † - (METOPTOMATIDAE) (FOSSIL)
- Calyptroconus, Genus Calyptroconus Parkhaev , 2001 (HELCIONELLIDAE) (FOSSIL)
- Calyptroides, Genus Calyptroides Clark & Durham, 1946 (CALYPTRAEIDAE) (FOSSIL)
- Calyptronerita, Genus Calyptronerita J. Le Renard, 1980 (NERITIDAE)
- Calyptropsis, Genus Calyptropsis Tenison Woods, 1879 (CALYPTRAEIDAE) (FOSSIL)
- Calytra, syn of: Genus Acroloxus H.H. Beck, 1837 (ACROLOXIDAE)
- calyx, Chiroteuthis calyx A.T. Young, 1972 - (CHIROTEUTHIDAE)
- calyx, Scabrina calyx (W.H. Benson, 1856) - (CYCLOPHORIDAE)
- calyx, Opalia calyx T. Nakayama, 2012 - (EPITONIIDAE)
- calyx, Schizostoma calyx (B. Phillips, 1836 †) - (EUOMPHALIDAE) (FOSSIL)
- calyx, Euomphalus calyx B. Phillips, 1836 † - syn of: Schizostoma calyx (B. Phillips, 1836 †) - (EUOMPHALIDAE) (FOSSIL)
- calyx, Goniatites calyx B. Phillips, 1836 † - (GONIATITIDAE) (FOSSIL)
- calyx, Homoceras calyx (Phillips, 1836) † - (HOMOCERATIDAE) (FOSSIL)
- calyx, Patella calyx H.A. Pilsbry, 1931 - syn of: Patella calix C.C. Li, 1930 - (PATELLIDAE)
- calyx, Pleurotomaria calyx Billings, 1859 † - syn of: Raphistoma calyx (Billings, 1859 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- calyx, Raphistoma calyx (Billings, 1859 †) - (RAPHISTOMATIDAE) (FOSSIL)
- calyx, Eubela calyx (W.H. Dall, 1889) - (RAPHITOMIDAE)
- Calzadina, Genus Calzadina Forner & Valls, 2014 (EUOMPHALIDAE) (FOSSIL)
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