- caamanoi, Epitonium caamanoi W.H. Dall & P. Bartsch, 1910 - (EPITONIIDAE)
- caatingaensis, Chaenomya caatingaensis Anelli & al., 2009 † - (PHOLADOMYIDAE) (FOSSIL)
- caballa, Doto caballa J.A. Ortea, L. Moro & J.J. Bacallado, 2010 - (DOTIDAE)
- caballensis, Fluminicola caballensis R. Hershler, H.P. Liu, T.J. Frest & E.J. Johannes, 2007 - (LITHOGLYPHIDAE)
- caballeri, Volvarina caballeri J. Espinosa & J.A. Ortea, 2012 - (MARGINELLIDAE)
- caballeri, Philine caballeri J.A. Ortea, J. Espinosa & L. Moro, 2001 - (PHILINIDAE)
- caballoensis, Nesocoptis pruinosa caballoensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- caballosense, Chondropoma vespertinum caballosense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- cabanensis, Meioceras cabanensis L. de Folin & F. Bèrillon, 1874 - syn of: Brochina banoni É.A. Benoist, 1874 † - (CAECIDAE)
- cabanetiana, Itieria cabanetiana Orbigny, 1878 † - syn of: Itieria globosa J. Favre, 1913 † - (CYLINDROBULLINIDAE) (FOSSIL)
- Cabania, Genus Cabania Lozouet & Senut, 1985 † (PLANAXIDAE) (FOSSIL)
- cabaretense, Hispanipoma quaternatum cabaretense P. Bartsch, 1946 - (POMATIIDAE)
- cabecar, Doto cabecar J.A. Ortea, 2001 - (DOTIDAE)
- cabeolensis, Valvata hellenica cabeolensis C.F. Fontannes, 1881 † - (VALVATIDAE) (FOSSIL)
- cabernet, Margarites cabernet R.V. Egorov, 2000 - (MARGARITIDAE)
- Cabestana, Genus Cabestana P.F. Röding, 1798 (RANELLIDAE)
- Cabestanimorpha, syn of: Genus Turritriton W.H. Dall, 1904 (RANELLIDAE)
- Cabestanna, Genus Cabestanna Röding, 1798 † (CAENOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Cabestuna, syn of: Genus Cabestana P.F. Röding, 1798 (RANELLIDAE)
- cabezai, Dinocardium cabezai Gardner, 1945 † - (CARDIIDAE) (FOSSIL)
- cabindae, Marionia cabindae K.M. White, 1955 - (TRITONIIDAE)
- cabiochi, Fuscapex cabiochi P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- cabirius, Bythinella charpentieri cabirius P.L. Reischütz, 1988 - (BYTHINELLIDAE)
- caboblanquensis, Trigoniocardia caboblanquensis N.E. Weisbord, 1964 - syn of: Trigoniocardia antillarum (A.V.M.D. D'Orbigny, 1853) - (CARDIIDAE)
- caboblanquensis, Strombina caboblanquensis N.E. Weisbord, 1962 - syn of: Strombina pumilio L.A. Reeve, 1858 - (COLUMBELLIDAE)
- caboblanquensis, Strombina caboblanquensis N.E. Weisbord, 1962 - syn of: Strombina pumilio L.A. Reeve, 1858 - (COLUMBELLIDAE)
- caboblanquensis, Conasprella jaspidea caboblanquensis N.E. Weisbord, 1962 † - (CONIDAE) (FOSSIL)
- caboblanquensis, Fusinus ansatus caboblanquensis N.E. Weisbord, 1962 - (FASCIOLARIIDAE)
- caboblanquensis, Transennella caboblanquensis N.E. Weisbord, 1964 - (VENERIDAE)
- cabocruzense, Cerion cabocruzense H.A. Pilsbry & C. de la Torre, 1943 - (CERIONIDAE)
- cabocruzensis, Microceramus cabocruzensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cabofriensis, Mitrella cabofriensis P.M.S. Costa & P.J.S. de Souza, 2001 - syn of: Mitrella cabofrioensis P.M.S. Costa & P.J.S. de Souza, 2001 - (COLUMBELLIDAE)
- cabofrioensis, Mitrella cabofrioensis P.M.S. Costa & P.J.S. de Souza, 2001 - (COLUMBELLIDAE)
- cabofrioensis, Lissodrillia cabofrioensis P.J. Fallon, 2016 - (DRILLIIDAE)
- cabopasadum, Trigoniocardia cabopasadum H.A. Pilsbry & A.A. Olsson, 1941 † - (CARDIIDAE) (FOSSIL)
- caboverdensis, Chaetopleura caboverdensis P. Kaas & H.L. Strack, 1986 - syn of: Lepidochitona caboverdensis (P. Kaas & H.L. Strack, 1986) - (CHAETOPLEURIDAE)
- caboverdensis, Lepidochitona caboverdensis (P. Kaas & H.L. Strack, 1986) - (LEPIDOCHITONIDAE)
- caboverdensis, Echinolittorina caboverdensis D.G. Reid, 2011 - (LITTORINIDAE)
- caboverdensis, Tritia caboverdensis (E. Rolán, 1984) - (NASSARIIDAE)
- caboverdensis, Spiniphiline caboverdensis Malaquias, Ohnheiser, Oskars & Willassen, 2016 - (PHILINIDAE)
- caboverdensis, Roboastra caboverdensis M. Pola, J.L. Cervera & T.M. Gosliner, 2003 - (POLYCERIDAE)
- caboverdensis, Novastoa caboverdensis R.E. Golding, R. Bieler, T.A. Rawlings & T.M. Collins, 2014 - (VERMETIDAE)
- cabrai, Ringicula cabrai L.J. Morlet, 1882 - (RINGICULIDAE)
- cabrali, Solatisonax cabrali D. de Oliveira Tenório & al., 2011 - (ARCHITECTONICIDAE)
- Cabralista, Genus Cabralista Keen, 1969 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- cabraloi, Africonus cabraloi T. Cossignani, 2014 - (CONIDAE)
- cabrasense, Rhytidopoma wrightianum cabrasense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- cabrasensis, Helicostyla cincinniformis cabrasensis P. Bartsch, 1932 - (BRADYBAENIDAE)
- cabrasensis, Uncinicoptis hidalgoi cabrasensis (H.A. Pilsbry & J. Henderson) - (UROCOPTIDAE)
- cabrensis, Alvania cabrensis E. Rolán & J.M. Hernández, 2007 - (RISSOIDAE)
- cabrerae, Fofinha cabrerae L. Moro & J.A. Ortea, 2015 - (ILBIIDAE)
- cabreraense, Paracrioceras cabreraense (Kakabadze & Hoedemaeker, 2004 †) - (ANCYLOCERATIDAE) (FOSSIL)
- cabrerai, Cerion mumia cabrerai C.G. Aguayo & M.I. Sánchez Roig, 1953 - (CERIONIDAE)
- cabrerai, Ziba cabrerai F. García-Talavera, 1975 - syn of: Ziba gambiana (W.L.H. Dohrn, 1861) - (MITRIDAE)
- cabrerai, Natica cabrerai T. Kase & Y. Shigeta, 2000 - (NATICIDAE)
- cabrerai, Eutudora cabrerai (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- cabrerai, Chondropoma cabrerai C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- cabrerai, Nodulia vignalensis cabrerai C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cabrerensis, Cryptosaccus cabrerensis G.A. Holyoak & D.T. Holyoak, 2014 - (HYGROMIIDAE)
- Cabricardium, Genus Cabricardium Kríž, 2004 † (ANTIPLEURIDAE) (FOSSIL)
- cabrierensis, Nassarius cabrierensis (P. Fischer & R. Tournouer, 1873) - (NASSARIIDAE)
- cabrierensis, Nassa cabrierensis C.F. Fontannes, 1878 - syn of: Nassarius cabrierensis (P. Fischer & R. Tournouer, 1873) - (NASSARIIDAE)
- cabrierensis italicus, Nassarius cabrierensis italicus (C. Mayer, 1876 ) - (NASSARIIDAE)
- cabrierensis ovoideus, Nassarius cabrierensis ovoideus É.A.A. Locard, 1886 † - syn of: Tritia ovoidea (É.A.A. Locard, 1886 †) - (NASSARIIDAE) (FOSSIL)
- Cabrieroceras, Genus Cabrieroceras Bogoslovsky , 1961 † (WERNEROCERATIDAE) (FOSSIL)
- Cabrievoceras, syn of: Genus Cabrieroceras Bogoslovsky , 1961 † (WERNEROCERATIDAE) (FOSSIL)
- Cabrilla, syn of: Genus Triopha L.S.R. Bergh, 1880 (POLYCERIDAE)
- cabrilloi, Turbonilla cabrilloi P. Bartsch, 1917 - (PYRAMIDELLIDAE)
- cabriti, Harpa cabriti J.B.P.A. Lamarck, 1816 - (HARPIDAE)
- cabriti, Diplomphalus cabriti (J. Gassies, 1865) - (RHYTIDIDAE)
- cabriti ventricosa, Harpa cabriti ventricosa J.B.P.A. Lamarck, 1816 - (HARPIDAE)
- cabritii, Conus cabritii A.C. Bernardi, 1858 - syn of: Fulgiconus exiguus (J.B.P.A. Lamarck, 1810) - (CONIDAE)
- cabritii, Vokesimurex cabritii (A.C. Bernardi, 1859) - (MURICIDAE)
- cabritii donmoorei, Haustellum cabritii donmoorei H.R. Bullis, 1964 - syn of: Vokesimurex donmoorei (H.R. Bullis, 1964) - (MURICIDAE)
- caca, Turbonilla caca (P. Bartsch, 1926) - (PYRAMIDELLIDAE)
- caca, Onoba caca P. Bartsch, 1926 - syn of: Turbonilla caca (P. Bartsch, 1926) - (RISSOIDAE)
- cacaguelita, Helicina cacaguelita H.A. Pilsbry & W.F. Clapp, 1902 - (HELICINIDAE)
- cacahuamilpensis, Volutaxis cacahuamilpensis (Herrera, 1891) - (SPIRAXIDAE)
- cacamai, Venericor cacamai (Gardner & E. Bowles, 1939 †) - (CARDITIDAE) (FOSSIL)
- cacao, Conus cacao M. Ferrario, 1983 - syn of: Lautoconus mercator cacao (M. Ferrario, 1983) - (CONIDAE)
- cacao, Lautoconus mercator cacao (M. Ferrario, 1983) - (CONIDAE)
- cacaotica, Anteaeolidiella cacaotica (W. Stimpson, 1855) - (AEOLIDIIDAE)
- cacaotica, Aeolidia cacaotica W. Stimpson, 1855 - syn of: Anteaeolidiella cacaotica (W. Stimpson, 1855) - (AEOLIDIIDAE)
- cacaotica, Coryphella cacaotica W. Stimpson, 1855 - syn of: Anteaeolidiella cacaotica (W. Stimpson, 1855) - (FLABELLINIDAE)
- cacaotica indica, Anteaeolidiella cacaotica indica L.S.R. Bergh, 1888 - syn of: Anteaeolidiella indica (L.S.R. Bergh, 1888) - (AEOLIDIIDAE)
- cacarajicaraensis, Liocallonia cacarajicaraensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cacawensis, Chlamys cacawensis G.F. Harris, 1919 † - (PECTINIDAE) (FOSSIL)
- caccelensis, Terebra caccelensis O.G. Costa, 1866 † - syn of: Terebra cacellensis O.G. Costa, 1866 † - (TEREBRIDAE) (FOSSIL)
- cacellensis, Conus cacellensis Pereira da Costa, 1866 † - (CONIDAE) (FOSSIL)
- cacellensis, Terebra cacellensis O.G. Costa, 1866 † - (TEREBRIDAE) (FOSSIL)
- cacellensis transylvanica, Terebra cacellensis transylvanica R. Hoernes & M. Auinger, 1880 † - (TEREBRIDAE) (FOSSIL)
- cachani, Kalidos cachani E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- Cacheoceras, Genus Cacheoceras Flower, 1968 † (ALLOTRIOCERATIDAE) (FOSSIL)
- cachiai, Mitromorpha cachiai C. Mifsud, 2001 - (MITROMORPHIDAE)
- cachiai, Kejdonia cachiai (C. Mifsud, 1998) - (PYRAMIDELLIDAE)
- cachimboensis, Heterocoptis cachimboensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cachimilla, Crepidula cachimilla Cledón, L.R.L. Simone & P.E. Penchaszadeh, 2004 - (CALYPTRAEIDAE)
- cachinensis, Goniomya cachinensis Aberhan, 2004 † - (PHOLADOMYIDAE) (FOSSIL)
- cachinensis, Angulaticeras cachinensis Hillebrandt, 2000 † - (SCHLOTHEIMIIDAE) (FOSSIL)
- cachla, Taeniarca cachla (A.A. Olsson, 1964 †) - (ARCIDAE) (FOSSIL)
- cachoeirae, Doryssa cachoeirae F.C. Baker, 1913 - (PACHYCHILIDAE)
- cachoi, Volvarina cachoi J. Espinosa & J.A. Ortea, 1997 - (MARGINELLIDAE)
- cachoi, Murexsul cachoi J. Espinosa & J.A. Ortea, 2016 - (MURICIDAE)
- cachoi, Satondella cachoi A.A. Luque, D.L. Geiger & E. Rolán, 2011 - (SCISSURELLIDAE)
- cachuchensis, Laevipilina cachuchensis V. Urgorri, Ó. García-Álvarez & A.A. Luque, 2005 - (NEOPILINIDAE)
- cacica, Cunearca cacica A.A. Olsson, 1922 † - (ARCIDAE) (FOSSIL)
- caciquei, Navidadina caciquei C. Nielsen, 2003 † - (MURICIDAE) (FOSSIL)
- cacoctycus, Rabdotus cacoctycus J.F. Mabille, 1895 - (BULIMULIDAE)
- Cacodaphnella, Genus Cacodaphnella H.A. Pilsbry & R.T. Lowe, 1932 (MANGELIIDAE)
- Cacophonia, syn of: Genus Lutraria J.B.P.A. Lamarck, 1799 (MACTRIDAE)
- cacopista, Hemicycla cacopista J.F. Mabille, 1883 - syn of: Hemicycla psathyra temperata (A. Mousson, 1872) - (HELICIDAE)
- cacoplasta, Hemicycla cacoplasta J.F. Mabille, 1882 - syn of: Hemicycla glyceia (J.F. Mabille, 1882) - (HELICIDAE)
- cacotycus, Bulimulus cacotycus J.F. Mabille, 1895 - syn of: Naesiotus excelsus A.A. Gould, 1853 - (BULIMULIDAE)
- Cacozeliana, Genus Cacozeliana E. Strand, 1928 (CERITHIIDAE)
- cacozeliana, Latiromitra cacozeliana P. Bouchet & Y.I. Kantor, 2000 - (COSTELLARIIDAE)
- cactaceus, Chagrepecten cactaceus (W.H. Dall, 1898 †) - (PECTINIDAE) (FOSSIL)
- cacticollus, Bulimulus cacticollus L.A. Reeve, 1849 - syn of: Bulimulus cacticolus L.A. Reeve, 1849 - (BULIMULIDAE)
- cacticolus, Bulimulus cacticolus L.A. Reeve, 1849 - (BULIMULIDAE)
- cactiorum, Turbonilla cactiorum A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- cactivorus, Drymaeus cactivorus (W.J. Broderip, 1832) - (BULIMULIDAE)
- cactorum, Bostryx cactorum D'Orbigny, 1835 - syn of: Lissoacme hennahi (J.E. Gray, 1830) - (BULIMULIDAE)
- cactorum, Helix cactorum D'Orbigny, 1835 - syn of: Lissoacme hennahi (J.E. Gray, 1830) - (HELICIDAE)
- cactus, Stolidotus cactus Kríž & Serpagli, 1993 † - (STOLIDOTIDAE) (FOSSIL)
- cacuana, Omphaloptycha cacuana F. Haas, 1953 † - (COELOSTYLINIDAE) (FOSSIL)
- cacumenata, Diala cacumenata C.F. Laseron, 1956 - syn of: Diala semistriata (R.A. Philippi, 1849) - (DIALIDAE)
- cacuminata, Diala cacuminata C.F. Laseron, 1956 - syn of: Diala semistriata (R.A. Philippi, 1849) - (DIALIDAE)
- cacuminata, Cerithiella cacuminata F.M. MacFarland, 1966 - (NEWTONIELLIDAE)
- cacuminata, Gari cacuminata Finlay & J. Marwick, 1937 † - (PSAMMOBIIDAE) (FOSSIL)
- cacuminatus, Conus cacuminatus E.M. Spieker, 1922 † - (CONIDAE) (FOSSIL)
- cacuminifera, Euplecta cacuminifera (W.H. Benson, 1850) - (ARIOPHANTIDAE)
- cacuminis, Auriculella diaphana cacuminis H.A. Pilsbry & C.M. Cooke, 1915 - (ACHATINELLIDAE)
- cacuminis, Pyrostoma badia cacuminis (M. Klemm, 1969) - (CLAUSILIIDAE)
- cacuminulus, Diplommatina cacuminulus J.J. Vermeulen, 1993 - (DIPLOMMATINIDAE)
- cadabra, Theora cadabra (F.E. Eames & G.L. Wilkins, 1957) - (SEMELIDAE)
- cadaverosa, Turricula cadaverosa L.A. Reeve, 1844 - syn of: Vexillum cadaverosum (L.A. Reeve, 1844) - (CLAVATULIDAE)
- cadaverosa, Mitra cadaverosa L.A. Reeve, 1844 - syn of: Vexillum cadaverosum (L.A. Reeve, 1844) - (MITRIDAE)
- cadaverosum, Vexillum cadaverosum (L.A. Reeve, 1844) - (COSTELLARIIDAE)
- cadaverosum pharaonis, Vexillum cadaverosum pharaonis (A. Issel, 1869) - (COSTELLARIIDAE)
- cadaverosum revelata, Vexillum cadaverosum revelata J.C. Melvill, 1899 - (COSTELLARIIDAE)
- cadaverosum rubrozonatum, Vexillum cadaverosum rubrozonatum P. Dautzenberg & J.L. Bouge, 1923 - syn of: Vexillum cadaverosum (L.A. Reeve, 1844) - (COSTELLARIIDAE)
- cadaverosus, Ampelita cadaverosus H.A. Pilsbry - (ACAVIDAE)
- caddeyi, Cinguloterebra caddeyi (T. Bratcher & W.O. Cernohorsky, 1982) - (TEREBRIDAE)
- caddoense, Prothalassoceras caddoense Plummer & P.H. Scott, 1937 † - (THALASSOCERATIDAE) (FOSSIL)
- caddoensis, Anchura caddoensis L.W. Stephenson † - syn of: Graciliala calcaris (B. Wade, 1926 †) - (APORRHAIDAE) (FOSSIL)
- caddoensis, Stenotrema caddoensis (S. Archer, 1935) - (POLYGYRIDAE)
- cadeadensis, Mirinaba cadeadensis F. Lange de Morretes, 1956 - (STROPHOCHEILIDAE)
- cadeei, Nassarius cadeei H.H. Kool, 2006 - (NASSARIIDAE)
- cadella, Austrocypraea cadella L.G. Yates, 2008 † - syn of: Austrocypraea rumballi D. Fehse, 2003 † - (CYPRAEIDAE) (FOSSIL)
- Cadella, Subgenus Tellina (Cadella) W.H. Dall, P. Bartsch & H.A. Rehder, 1938 (TELLINIDAE)
- cadenasi, Clavus cadenasi (W.J. Clench & C.G. Aguayo, 1939) - (DRILLIIDAE)
- cadenati, Corbula cadenati (M. Nicklés, 1955) - (CORBULIDAE)
- cadevalli, Bythinella cadevalli M. Bech & C. Fernández, 1986 - syn of: Bythinella batalleri A. Bofill, 1925 - (BYTHINELLIDAE)
- cadeyri, Ampelita cadeyri E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ACAVIDAE)
- cadica, Abida cadica P. Fagot, 1902 - syn of: Abida partioti A.de Saint-Simon, 1848 - (CHONDRINIDAE)
- cadica, Abida secale cadica C.A. Westerlund, 1902 - (CHONDRINIDAE)
- cadiconiforme, Syngastrioceras cadiconiforme Wagner-Gentis, 1963 † - (GLAPHYRITIDAE) (FOSSIL)
- cadieni, Parvaplustrum cadieni Á. Valdés, T.M. Gosliner & A. Warén, 2017 - (APLUSTRIDAE)
- cadieni, Tellina cadieni (P.H. Valentich-Scott & E.V. Coan, 2000) - (TELLINIDAE)
- cadieni, Angulus cadieni P.H. Valentich-Scott & E.V. Coan, 2000 - syn of: Tellina cadieni (P.H. Valentich-Scott & E.V. Coan, 2000) - (TELLINIDAE)
- cadiensis, Abida secale cadiensis E. Gittenberger, 1973 - (CHONDRINIDAE)
- cadiforme, Eboraciceras cadiforme Buckman, 1923 † - (CARDIOCERATIDAE) (FOSSIL)
- cadiscus, Theobaldius cadiscus (W.H. Benson, 1860) - (CYCLOPHORIDAE)
- Cadium, syn of: Genus Tonna M.T. Brünnich, 1772 (TONNIDAE)
- cadizensis, Yoldiella cadizensis L. Hoffman, B. van Heugten & M.S.S. Lavaleye, 2009 - (YOLDIIDAE)
- cadiziana, Cardiomya cadiziana M. Huber, 2010 - (CUSPIDARIIDAE)
- Cadlina, Genus Cadlina L.S.R. Bergh, 1878 (CADLINIDAE)
- Cadlinella, Genus Cadlinella K.H.J. Thiele, 1931 (CHROMODORIDIDAE)
- CADLINIDAE Bergh, 1891 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-DORIDOIDEA [Superfamily])
- cadmus, Spurlingia cadmus T. Iredale, 1937 - syn of: Spurlingia dunkiensis (E. Forbes, 1851) - (CAMAENIDAE)
- Cadmusia, syn of: Genus Pholadidea W.H. Turton, 1819 (PHOLADIDAE)
- Cadoceras, Genus Cadoceras Imlay, 1953 † (CADOCERATIDAE) (FOSSIL)
- CADOCERATIDAE Hyatt, 1900 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-STEPHANOCERATOIDEA [Superfamily]) (FOSSIL)
- cadoceriforme, Crioceras cadoceriforme Sinzow, 1905 † - syn of: Caspianites cadoceriformis (Sinzow, 1905 †) - (CRIOCERATITIDAE) (FOSSIL)
- cadoceriformis, Caspianites cadoceriformis (Sinzow, 1905 †) - (ANCYLOCERATIDAE) (FOSSIL)
- cadomense, Cadomoceras cadomense (H.M.D. de Blainville, 1840 †) - (HAPLOCERATIDAE) (FOSSIL)
- cadomensis, Astraea cadomensis J.L.H. Michelin, 1845 - (TURBINIDAE)
- Cadomia, Genus Cadomia Goarant de Tromelin, 1877 † (MALLETIIDAE) (FOSSIL)
- Cadomites, Genus Cadomites Munier-Chalmas, 1892 † (STEPHANOCERATIDAE) (FOSSIL)
- Cadomoceras, Genus Cadomoceras Munier-Chalmas, 1892 † (HAPLOCERATIDAE) (FOSSIL)
- caduca, Strophiops caduca C.J. Maynard & W.F. Clapp, 1921 - syn of: Cerion glans H.C. Küster, 1844 - (CERIONIDAE)
- caduca, Rengea caduca (E.A. Smith, 1894) - (CUSPIDARIIDAE)
- caduca, Myonera caduca E.A. Smith, 1894 - syn of: Rengea caduca (E.A. Smith, 1894) - (CUSPIDARIIDAE)
- caduca, Chrysallida caduca (C.F. Laseron, 1959) - (PYRAMIDELLIDAE)
- caduca, Scrobicularia caduca A.A. Gould, 1861 - (SCROBICULARIIDAE)
- caduca, Pseudosubulina caduca (H.B. Baker, 1939) - (SPIRAXIDAE)
- caduca, Succinea caduca J.W. Mighels, 1845 - (SUCCINEIDAE)
- caduca, Tellina caduca A. Scacchi, 1835 - syn of: Mysia undata (T. Pennant, 1777) - (TELLINIDAE)
- Caducifer, Genus Caducifer W.H. Dall, 1904 (BUCCINIDAE)
- caducocincta, Mesoginella caducocincta (W.L. May, 1916 †) - (MARGINELLIDAE) (FOSSIL)
- caducocincta, Marginella caducocincta W.L. May, 1916 † - syn of: Mesoginella caducocincta (W.L. May, 1916 †) - (MARGINELLIDAE) (FOSSIL)
- caducum, Paragastrioceras caducum Ruzhentsev, 1956 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- caducum, Amussium caducum E.A. Smith, 1885 - syn of: Propeamussium caducum (E.A. Smith, 1885) - (PECTINIDAE)
- caducum, Propeamussium caducum (E.A. Smith, 1885) - (PROPEAMUSSIIDAE)
- caducus, Tropiceltites caducus (Dittmar, 1866 †) - (TROPICELTITIDAE) (FOSSIL)
- caducus, Omphalina lucubratus caducus (L. Pfeiffer, 1846) - (ZONITIDAE)
- caduloide, Dentalium caduloide W.H. Dall, 1892 † - (DENTALIIDAE) (FOSSIL)
- Cadulus, Genus Cadulus R.A. Philippi, 1844 (GADILIDAE)
- cadus, Pisinna cadus (C.R. Laws, 1950 †) - (ANABATHRIDAE) (FOSSIL)
- cadus, Chryseofusus cadus R. Hadorn & K. Fraussen, 2003 - (FASCIOLARIIDAE)
- Cadus, syn of: Genus Tonna M.T. Brünnich, 1772 (TONNIDAE)
- cadus, Tulites cadus S.S. Buckman, 1921 † - (TULITIDAE) (FOSSIL)
- cadwaladeri, Thaumastus cadwaladeri H.A. Pilsbry, 1930 - (MEGASPIRIDAE)
- cadwalladerensis, Pecten cadwalladerensis McLearn, 1942 † - (PECTINIDAE) (FOSSIL)
- cadyi, Rayonnoceras cadyi Croneis, 1926 † - (CARBACTINOCERATIDAE) (FOSSIL)
- caeca, Doris caeca (Á. Valdés, 2001) - (DORIDIDAE)
- caeca, Helix caeca R.J.L. Guppy, 1868 - syn of: Ptychopatula dioscoricola (C.B. Adams, 1845) - (HELICIDAE)
- caeca, Lepeta caeca (O.F. Müller, 1776) - (LEPETIDAE)
- caeca, Patella caeca O.F. Müller, 1776 - syn of: Lepeta caeca (O.F. Müller, 1776) - (PATELLIDAE)
- caeca, Opacuincola caeca W.F. Ponder, 1966 - (TATEIDAE)
- caeca, Thysanophora caeca R.J.L. Guppy, 1868 - syn of: Ptychopatula dioscoricola (C.B. Adams, 1845) - (THYSANOPHORIDAE)
- caeca concentrica, Maoricrater caeca concentrica A.T. von Middendorff, 1851 - syn of: Cryptobranchia concentrica (A.T. von Middendorff, 1851) - (LEPETIDAE)
- caeca concentrica, Patella caeca concentrica A.T. von Middendorff, 1851 - syn of: Cryptobranchia concentrica (A.T. von Middendorff, 1851) - (PATELLIDAE)
- caeca pacifica, Lepeta caeca pacifica L.I. Moskalev, 1977 - (LEPETIDAE)
- Caecella, syn of: Genus Coecella J.E. Gray, 1853 (MESODESMATIDAE)
- CAECIDAE J.E. Gray, 1850 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- caecilia, Pseudonerinea caecilia (A.V.M.D. D'Orbigny, 1850 †) - (CERITELLIDAE) (FOSSIL)
- caecilia, Leucosyrinx caecilia K.H.J. Thiele, 1925 - (PSEUDOMELATOMIDAE)
- caeciliae, Poeycoptis caeciliae (J. Gundlach in R. Arango, 1876) - (UROCOPTIDAE)
- Caecilianella, syn of: Genus Cecilioides A.E.J. Férussac, 1814 (FERUSSACIIDAE)
- Caecilianopsis, syn of: Subgenus Cecilioides (Karolus) L. de Folin in L. de Folin & R. Perrier, 1870 (FERUSSACIIDAE)
- Caecilioides, syn of: Genus Cecilioides A.E.J. Férussac, 1814 (FERUSSACIIDAE)
- Caecinella, syn of: Genus Doto L. Oken, 1815 (DOTIDAE)
- caecoides, Lepeta caecoides H.F. Carpenter, 1864 - syn of: Lepeta caeca (O.F. Müller, 1776) - (LEPETIDAE)
- caecoides, Thysanophora caecoides (R. Tate, 1870) - (THYSANOPHORIDAE)
- Caecum, Genus Caecum J. Fleming, 1813 (CAECIDAE)
- caecum, Compressidens caecum V. Scarabino, 2008 - (PULSELLIDAE)
- caedes, Crepidula caedes C. Nielsen, 2003 † - (CALYPTRAEIDAE) (FOSSIL)
- caelata, Pododesmus caelata L.A. Reeve, 1859 - syn of: Monia nobilis (L.A. Reeve, 1859) - (ANOMIIDAE)
- caelata, Monia caelata L.A. Reeve, 1859 - syn of: Monia nobilis (L.A. Reeve, 1859) - (ANOMIIDAE)
- caelata, Arca caelata L.A. Reeve, 1844 - syn of: Barbatia candida (G.S. Helbling, 1779) - (ARCIDAE)
- caelata, Acmella caelata J.J. Vermeulen & D.J. Junau, 2007 - (ASSIMINEIDAE)
- caelata, Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelata, Mohnia caelata A.E. Verrill & S. Smith, 1880 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelata, Colus caelata A.E. Verrill, 1880 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelata, Bursa caelata W.J. Broderip, 1833 - syn of: Bursa corrugata caelata W.J. Broderip, 1833 - (BURSIDAE)
- caelata, Bursa corrugata caelata W.J. Broderip, 1833 - (BURSIDAE)
- caelata, Synthopsis caelata (A.W.B. Powell, 1930) - (CERITHIOPSIDAE)
- caelata, Lienardia caelata (A. Garrett, 1873) - (CLATHURELLIDAE)
- caelata, Scobinella caelata T.A. Conrad, 1848 † - (CLATHURELLIDAE) (FOSSIL)
- caelata, Gibberula caelata (T.A. de M. Monterosato, 1877) - (CYSTISCIDAE)
- caelata, Eulima caelata J.G. Jeffreys, 1870 - (EULIMIDAE)
- caelata, Haliotis caelata P.F. Röding, 1798 - syn of: Haliotis ovina J.F. Gmelin, 1791 - (HALIOTIDAE)
- caelata, Trichia caelata (S.E. Studer, 1820) - (HYGROMIIDAE)
- caelata, Lucina caelata L.A. Reeve, 1850 - syn of: Diplodonta caelata (L.A. Reeve, 1850) - (LUCINIDAE)
- caelata, Mangelia caelata (R.B. Hinds, 1843) - (MANGELIIDAE)
- caelata, Marginella caelata T.A. de M. Monterosato, 1877 - syn of: Gibberula caelata (T.A. de M. Monterosato, 1877) - (MARGINELLIDAE)
- caelata, Plaxiphora caelata (L.A. Reeve, 1847) - (MOPALIIDAE)
- caelata, Tritia caelata (A. Adams, 1852) - (NASSARIIDAE)
- caelata, Arcularia caelata C. Hedley, 1915 - syn of: Nassarius idyllius (J.C. Melvill & R. Standen, 1901) - (NASSARIIDAE)
- caelata, Nuculana caelata R.B. Hinds, 1843 - syn of: Saccella taphria (W.H. Dall, 1897) - (NUCULANIDAE)
- caelata, Nucula caelata R.B. Hinds, 1843 - syn of: Saccella taphria (W.H. Dall, 1897) - (NUCULIDAE)
- caelata, Lissarca caelata (P.A. Maxwell, 1969 †) - (PHILOBRYIDAE) (FOSSIL)
- caelata, Monotygma caelata A. Adams, 1861 - (PYRAMIDELLIDAE)
- caelata, Babella caelata A. Adams, 1863 - syn of: Babella caelatior (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- caelata, Egilina caelata A. Adams, 1863 - syn of: Babella caelatior (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- caelata, Parthenia caelata A. Adams, 1863 - syn of: Babella caelatior (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- caelata, Ranella caelata W.J. Broderip, 1833 - syn of: Bursa corrugata caelata W.J. Broderip, 1833 - (RANELLIDAE)
- caelata, Alvania caelata A. Adams, 1861 - (RISSOIDAE)
- caelata, Phosinella caelata (C.F. Laseron, 1956) - (RISSOINIDAE)
- caelata, Rissoina caelata A. Adams, 1851 - syn of: Rissoina striata (J.R.C. Quoy & J.P. Gaimard, 1833) - (RISSOINIDAE)
- caelata, Lissotestella caelata (A.W.B. Powell, 1937) - (SEGUENZIOIDEA (UNASSIGNED))
- caelata, Herouvalia caelata (A. Adams, 1854) - (TELLINIDAE)
- caelata, Pseudoliotia caelata (A. Garrett, 1873) - (TORNIDAE)
- caelata, Astraea caelata J.F. Gmelin, 1791 - syn of: Lithopoma caelatum (J.F. Gmelin, 1791) - (TURBINIDAE)
- caelata, Turritella caelata O.A.L. Mörch in R.W. Dunker, 1858 - (TURRITELLIDAE)
- caelata, Diplodonta caelata (L.A. Reeve, 1850) - (UNGULINIDAE)
- caelata, Phlyctiderma caelata L.A. Reeve, 1850 - syn of: Diplodonta caelata (L.A. Reeve, 1850) - (UNGULINIDAE)
- caelata, Dosinia caelata (L.A. Reeve, 1850) - (VENERIDAE)
- caelata, Verticordia caelata A.E. Verrill, 1882 - syn of: Trigonulina ornata (A.V.M.D. D'Orbigny, 1842) - (VERTICORDIIDAE)
- caelata louisa, Bursa caelata louisa M. Smith, 1948 - syn of: Bursa corrugata caelata W.J. Broderip, 1833 - (BURSIDAE)
- caelata schauinslandi, Plaxiphora caelata schauinslandi (K.H.J. Thiele, 1909) - (MOPALIIDAE)
- caelata torresiana, Arcularia caelata torresiana C. Hedley, 1915 - syn of: Nassarius idyllius (J.C. Melvill & R. Standen, 1901) - (NASSARIIDAE)
- caelathus, Colus caelathus A.E. Verrill & S. Smith, 1880 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- Caelatiana, syn of: Genus Trochulus J.D.W. Hartmann 1840 (HYGROMIIDAE)
- caelatior, Babella caelatior (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- caelatior, Turbonilla caelatior W.H. Dall & P. Bartsch, 1906 - syn of: Babella caelatior (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- caelatulus, Sipho caelatulus A.E. Verrill, 1884 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelatulus, Trochus caelatulus McCoy † - (TROCHIDAE) (FOSSIL)
- caelatum, Solarium caelatum R.B. Hinds, 1844 - syn of: Heliacus caelatus (R.B. Hinds, 1844) - (ARCHITECTONICIDAE)
- caelatum, Mariacassis caelatum T.A. Conrad, 1830 † - syn of: Echinophoria caelatura (T.A. Conrad, 1830 †) - (CASSIDAE) (FOSSIL)
- caelatum, Vexillum caelatum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- caelatum, Haplotrema caelatum W.G. Mazÿck, 1886 - (HAPLOTREMATIDAE)
- caelatum, Lithopoma caelatum (J.F. Gmelin, 1791) - (TURBINIDAE)
- caelatum, Gafrarium caelatum A. Adams, 1854 - syn of: Herouvalia caelata (A. Adams, 1854) - (VENERIDAE)
- Caelatura, Genus Caelatura T.A. Conrad, 1865 (BARLEEIIDAE)
- caelatura, Echinophoria caelatura (T.A. Conrad, 1830 †) - (CASSIDAE) (FOSSIL)
- caelatura, Plegma caelatura (A.E.J. Férussac, 1821) - (HELICARIONIDAE)
- caelatura, Anacithara caelatura C. Hedley, 1922 - (HORAICLAVIDAE)
- caelatura, Elimia caelatura (L.A. Reeve, 1860) - (PLEUROCERIDAE)
- caelatura, Chrysallida caelatura (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- caelatura, Ellatrivia caelatura (C. Hedley, 1918) - (TRIVIIDAE)
- caelatura, Turritella caelatura T.A. Conrad, 1848 † - (TURRITELLIDAE) (FOSSIL)
- caelatura excellens, Elimia caelatura excellens C. Goodrich, 1935 - (PLEUROCERIDAE)
- caelatura georgiana, Elimia caelatura georgiana I. Lea, 1862 - (PLEUROCERIDAE)
- caelatura infuscata, Elimia caelatura infuscata I. Lea, 1862 - (PLEUROCERIDAE)
- caelatura lecontiana, Elimia caelatura lecontiana (I. Lea, 1841) - (PLEUROCERIDAE)
- caelatura luteocella, Elimia caelatura luteocella I. Lea, 1868 - (PLEUROCERIDAE)
- caelatura stearnsiana, Elimia caelatura stearnsiana R.E. Call, 1886 - (PLEUROCERIDAE)
- caelatus, Heliacus caelatus (R.B. Hinds, 1844) - (ARCHITECTONICIDAE)
- caelatus, Heliacus caelatus A.M. Keen, 1971 - syn of: Torinista planispira H.A. Pilsbry & H.N. Lowe, 1932 - (ARCHITECTONICIDAE)
- caelatus, Boiotremus caelatus (J. Perner, 1903 †) - (BUCANIIDAE) (FOSSIL)
- caelatus, Colus caelatus A.E. Verrill & S. Smith, 1880 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelatus, Conus caelatus A. Adams, 1855 - syn of: Eugeniconus marchionatus (R.B. Hinds, 1843) - (CONIDAE)
- caelatus, Donax caelatus P.P. Carpenter, 1857 - (DONACIDAE)
- caelatus, Plaxiphora caelatus L.A. Reeve, 1847 - syn of: Plaxiphora caelata (L.A. Reeve, 1847) - (MOPALIIDAE)
- caelatus, Nassarius caelatus (A. Adams, 1852) - (NASSARIIDAE)
- caelatus, Nassarius caelatus Auct. non A. Adams, 1852 - syn of: Nassarius multivocus H.H. Kool, 2008 - (NASSARIIDAE)
- caelatus, Brokenriveria caelatus (G.A. Goldfuss, 1844 †) - (PLATYCERATIDAE) (FOSSIL)
- caelatus, Pyrunculus caelatus (K.J. Bush, 1885) - (RETUSIDAE)
- caelatus, Nothapalus caelatus H.A. Pilsbry, 1919 - (SUBULINIDAE)
- caelatus, Sulcavitus caelatus (Holm, 1893 †) - (SULCAVITIDAE) (FOSSIL)
- caelatus, Omphalius caelatus A. Adams, 1854 - syn of: Anadema macandrewii (O.A.L. Mörch, 1868) - (TEGULIDAE)
- caelatus, Cantharidus caelatus (F.W. Hutton, 1884) - (TROCHIDAE)
- caelatus, Trochus caelatus J.F. Gmelin, 1791 - syn of: Lithopoma caelatum (J.F. Gmelin, 1791) - (TROCHIDAE)
- caelatus, Micrelenchus caelatus F.W. Hutton, 1884 - syn of: Cantharidus caelatus (F.W. Hutton, 1884) - (TROCHIDAE)
- caelatus archibenthicola, Micrelenchus caelatus archibenthicola R.K. Dell, 1956 - syn of: Cantharidus mortenseni (N.H. Odhner, 1924) - (TROCHIDAE)
- caelatus danitensis, Nassarius caelatus danitensis J. Makiyama, 1927 - syn of: Tritia casta (A.A. Gould, 1850) - (NASSARIIDAE)
- caelatus debilis, Nothapalus caelatus debilis H.A. Pilsbry, 1919 - (SUBULINIDAE)
- caelatus elongatus, Cantharidus caelatus elongatus (H.H. Suter, 1897) - (TROCHIDAE)
- caelatus hebes, Colus caelatus hebes A.E. Verrill, 1884 - syn of: Retimohnia caelata (A.E. Verrill, 1880) - (BUCCINIDAE)
- caelatus mortenseni, Cantharidus caelatus mortenseni (N.H. Odhner, 1924) - syn of: Cantharidus mortenseni (N.H. Odhner, 1924) - (TROCHIDAE)
- caelatus rothi, Chion caelatus rothi E.V. Coan, 1983 - syn of: Donax rothi E.V. Coan, 1983 - (DONACIDAE)
- caelatus verbeeki, Zeuxis caelatus verbeeki K. Martin, 1895 † - syn of: Tritia casta (A.A. Gould, 1850) - (NASSARIIDAE) (FOSSIL)
- caelebs, Venericardia caelebs J. Marwick, 1929 † - syn of: Megacardita ponderosa H.H. Suter, 1913 † - (CARDITIDAE) (FOSSIL)
- caelebs, Dawsonocerina caelebs (Barrande, 1874 †) - (DAWSONOCERATIDAE) (FOSSIL)
- caelestimontana, Cathaica caelestimontana Y. Tzvetkov, 1940 - syn of: Angiomphalia caelestimontana (Y. Tzvetkov, 1940) - (BRADYBAENIDAE)
- caelestimontana, Angiomphalia caelestimontana (Y. Tzvetkov, 1940) - (HYGROMIIDAE)
- caelestis, Platydoris caelestis E.F. Kelaart, 1858 - syn of: Platydoris scabra (G.L.C.F.D. Cuvier, 1804) - (DISCODORIDIDAE)
- caelestis, Ringicula caelestis Helwerda, 2015 - (RINGICULIDAE)
- caelicola, Cirsotrema caelicola Finlay, 1926 † - (EPITONIIDAE) (FOSSIL)
- caeligena, Nebularia caeligena L.A. Reeve, 1844 - syn of: Nebularia aurantia (J.F. Gmelin, 1791) - (MITRIDAE)
- Caelobassus, Genus Caelobassus Stilwell & Zinsmeister, 1992 † (MURICIDAE) (FOSSIL)
- caelolineatus, Nassarius caelolineatus E.C. Nesbitt & W.D. Pitt, 1986 - (NASSARIIDAE)
- caementarius, Philoxene caementarius Blodgett & Johnson, 1992 † - (EUOMPHALIDAE) (FOSSIL)
- caementarius, Leucopetrites caementarius Buckman † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- caementitia, Monilearia caementitia (R.J. Shuttleworth, 1852) - (COCHLICELLIDAE)
- caeneus, Caenisites caeneus J. Buckman, 1925 † - (ARIETITIDAE) (FOSSIL)
- caenis, Vexillum caenis G.D. Nardo, 1847 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- Caenisites, Genus Caenisites Sowerby, 1818 † (ARIETITIDAE) (FOSSIL)
- Caenocyclus, Genus Caenocyclus Schindewolf, 1922 † (PERICYCLIDAE) (FOSSIL)
- CAENOGASTROPODA (UNASSIGNED) - Family (GASTROPODA-CAENOGASTROPODA [Subclass]) (FOSSIL)
- Caenolyroceras, Genus Caenolyroceras Ruzhentsev & Bogoslovskaya, 1971 † (NEOGLYPHIOCERATIDAE) (FOSSIL)
- Caenonaias, syn of: Genus Nephronaias J.C.H. Crosse & P. Fischer, 1894 (UNIONIDAE)
- caenosa, Oreohelix caenosa H.A. Pilsbry, 1948 - (OREOHELICIDAE)
- Caenosarcolites, Genus Caenosarcolites Mitchell, 2013 † (ANTILLOCAPRINIDAE) (FOSSIL)
- caepa, Umbilia caepa L.G. Yates, 2008 † - (CYPRAEIDAE) (FOSSIL)
- caepa, Pleurotomaria caepa Deslongchamps, 1848 † - syn of: Ptychomphalus caepa (Deslongchamps, 1848 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- caepa, Ptychomphalus caepa (Deslongchamps, 1848 †) - (PTYCHOMPHALIDAE) (FOSSIL)
- caepa, Orthaulax caepa Cooke, 1921 † - (STROMBIDAE) (FOSSIL)
- caereesiense, Orthoceras caereesiense Hicks, 1875 † - syn of: Michelinoceras avelinii (Salter, 1854 †) - (ORTHOCERATIDAE) (FOSSIL)
- caerula, Ransoniella caerula T. Iredale, 1939 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- caerulans, Boreoelona caerulans (C.A. Westerlund, 1896) - (BITHYNIIDAE)
- caerulans, Conus caerulans H.C. Küster, 1838 - syn of: Chelyconus ermineus (I. von Born, 1778) - (CONIDAE)
- caerulans, Helix caerulans C. Pfeiffer, 1828 - syn of: Vidovicia coerulans (C. Pfeiffer, 1828) - (HELICIDAE)
- caerulans, Mangelia caerulans R.A. Philippi, 1844 - syn of: Mangelia striolata A. Risso, 1826 - (MANGELIIDAE)
- caerulans, Pleurotoma caerulans R.A. Philippi, 1844 - syn of: Mangelia striolata A. Risso, 1826 - (TURRIDAE)
- caerulans, Urocoptis caerulans F. Poey - syn of: Poecilocoptis coerulescens (F. Poey, 1874) - (UROCOPTIDAE)
- caerulans moltschanovi, Boreoelona caerulans moltschanovi (W.A. Lindholm, 1914) - (BITHYNIIDAE)
- caerulea, Aegista caerulea J.T. Kuroda & T. Habe, 1960 - (BRADYBAENIDAE)
- caerulea, Strophiops caerulea C.J. Maynard & W.F. Clapp, 1915 - (CERIONIDAE)
- caerulea, Glossodoris caerulea (A. Risso, 1818) - (CHROMODORIDIDAE)
- caerulea, Albinaria caerulea (G.P. Deshayes, 1835) - (CLAUSILIIDAE)
- caerulea, Clavatula caerulea (H.C. Weinkauff in H.C. Weinkauff & W. Kobelt, 1875) - (CLAVATULIDAE)
- caerulea, Cuna caerulea C.A. Fleming, 1955 † - (CONDYLOCARDIIDAE) (FOSSIL)
- caerulea, Erronea caerulea G. Fischer von Waldheim, 1807 - syn of: Erronea cylindrica (I. von Born, 1778) - (CYPRAEIDAE)
- caerulea, Luria caerulea J.S. Schröter, 1804 - syn of: Luria cinerea (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- caerulea, Paradoris caerulea Y. Camacho-García & T.M. Gosliner, 2007 - (DISCODORIDIDAE)
- caerulea, Doris caerulea A. Risso, 1826 - syn of: Felimare villafranca (A. Risso, 1818) - (DORIDIDAE)
- caerulea, Cuthona caerulea (G. Montagu, 1804) - (FIONIDAE)
- caerulea, Trapania caerulea T.M. Gosliner & S.J. Fahey, 2008 - (GONIODORIDIDAE)
- caerulea, Scabricola caerulea (L.A. Reeve, 1844) - (MITRIDAE)
- caerulea, Oliva caerulea (P.F. Röding, 1798) - (OLIVIDAE)
- caerulea, Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- caerulea, Nembrotha caerulea C.N.E. Eliot, 1904 - (POLYCERIDAE)
- caerulea, Turbinella caerulea G. Perry, 1811 - syn of: Turbinella pyrum (C. Linnaeus, 1767) - (TURBINELLIDAE)
- caerulea, Pleurotoma caerulea H.C. Weinkauff, 1875 - syn of: Clavatula caerulea (H.C. Weinkauff in H.C. Weinkauff & W. Kobelt, 1875) - (TURRIDAE)
- caerulea, Radiatula caerulea (I. Lea, 1831) - (UNIONIDAE)
- caerulea, Dosinia caerulea L.A. Reeve, 1850 - (VENERIDAE)
- caerulea adspersa, Patella caerulea adspersa unknown - (PATELLIDAE)
- caerulea altecostata, Albinaria caerulea altecostata (L. Pfeiffer, 1866) - (CLAUSILIIDAE)
- caerulea amorgia, Albinaria caerulea amorgia (O. Böttger, 1878) - (CLAUSILIIDAE)
- caerulea fragilis, Patella caerulea fragilis R.A. Philippi, 1836 - (PATELLIDAE)
- caerulea kefalos, Albinaria caerulea kefalos H. Nordsieck, 2014 - (CLAUSILIIDAE)
- caerulea kosensis, Albinaria caerulea kosensis K.L. Pfeiffer, 1955 - (CLAUSILIIDAE)
- caerulea kreglingeri, Albinaria caerulea kreglingeri (L. Pfeiffer, 1866) - (CLAUSILIIDAE)
- caerulea lugubris, Oliva caerulea lugubris J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- caerulea maculata, Albinaria caerulea maculata (E.A. Rossmässler, 1836) - (CLAUSILIIDAE)
- caerulea milleri, Albinaria caerulea milleri (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- caerulea philippinensis, Oliva caerulea philippinensis P. Bartsch, 1918 - (OLIVIDAE)
- caerulea pholegandrica, Albinaria caerulea pholegandrica H. Nordsieck, 2002 - (CLAUSILIIDAE)
- caerulea ponderi, Oliva caerulea ponderi E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- caerulea scaletta, Albinaria caerulea scaletta H. Nordsieck, 2002 - (CLAUSILIIDAE)
- caerulea subplana, Patella caerulea subplana V.L.V. Potiez & A. Michaud, 1838 - (PATELLIDAE)
- caerulea tenuistriata, Patella caerulea tenuistriata H.C. Weinkauff, 1880 - syn of: Patella ulyssiponensis J.F. Gmelin, 1791 - (PATELLIDAE)
- caeruleata, Chromodoris caeruleata W. Stimpson, 1855 - syn of: Chromodoris coeruleata (W. Stimpson, 1855) - (CHROMODORIDIDAE)
- caeruleocirrus, Tambja caeruleocirrus Willan & Chang, 2017 - (POLYCERIDAE)
- caeruleomaculatus, Dermatobranchus caeruleomaculatus T.M. Gosliner & S.J. Fahey, 2011 - (ARMINIDAE)
- caerulescens, Aeolidiella caerulescens (G.P. Deshayes, 1808) - (AEOLIDIIDAE)
- caerulescens, Spurilla caerulescens C.L. Laurillard, 1830 - syn of: Berghia coerulescens (C.L. Laurillard, 1832) - (AEOLIDIIDAE)
- caerulescens, Aulacofusus caerulescens J.T. Kuroda & T. Habe in T. Habe, 1961 - syn of: Aulacofusus coerulescens J.T. Kuroda & T. Habe in T. Habe, 1961 - (BUCCINIDAE)
- caerulescens, Photinula caerulescens P.P. King & W.J. Broderip, 1832 - syn of: Photinula coerulescens (P.P. King & W.J. Broderip, 1832) - (CALLIOSTOMATIDAE)
- caerulescens, Strophiops caerulescens C.J. Maynard & W.F. Clapp, 1920 - syn of: Cerion glans H.C. Küster, 1844 - (CERIONIDAE)
- caerulescens, Cerithium caerulescens G.B. II Sowerby - syn of: Cerithium caeruleum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- caerulescens, Conus caerulescens J.B.P.A. Lamarck, 1810 - syn of: Graphiconus cinereus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- caerulescens, Costellaria caerulescens P. Dautzenberg & J.L. Bouge, 1923 - syn of: Vexillum sanguisugum (C. Linnaeus, 1758) - (COSTELLARIIDAE)
- caerulescens, Erronea errones caerulescens (J.S. Schröter, 1804) - (CYPRAEIDAE)
- caerulescens, Phidiana caerulescens J.E. Gray, 1850 - (FACELINIDAE)
- caerulescens, Hydrobia caerulescens (J.F. Gmelin, 1791 †) - (HYDROBIIDAE) (FOSSIL)
- caerulescens, Prunum caerulescens J.B.P.A. Lamarck, 1822 - syn of: Prunum prunum (J.F. Gmelin, 1791) - (MARGINELLIDAE)
- caerulescens, Septaria caerulescens G.B. I Sowerby - (NERITIDAE)
- caerulescens, Octopus caerulescens H.M.D. de Blainville, 1826 - (OCTOPODIDAE)
- caerulescens, Acanthodoris caerulescens L.S.R. Bergh, 1880 - (ONCHIDORIDIDAE)
- caerulescens, Psammobia caerulescens J.B.P.A. Lamarck, 1818 - syn of: Gari amethystus (W. Wood, 1815) - (PSAMMOBIIDAE)
- caerulescens, Gari caerulescens J.B.P.A. Lamarck, 1818 - syn of: Gari amethystus (W. Wood, 1815) - (PSAMMOBIIDAE)
- caerulescens, Psammobia caerulescens L.A. Reeve, 1857 - syn of: Gari truncata (C. Linnaeus, 1767) - (PSAMMOBIIDAE)
- caerulescens, Terebra caerulescens J.B.P.A. Lamarck, 1822 - syn of: Hastula hectica (C. Linnaeus, 1758) - (TEREBRIDAE)
- caerulescens, Turbo caerulescens J.B.P.A. Lamarck, 1822 - syn of: Melarhaphe neritoides (C. Linnaeus, 1758) - (TURBINIDAE)
- caerulescens otaitensis, Terebra caerulescens otaitensis R.P. Lesson, 1830 - syn of: Hastula hectica (C. Linnaeus, 1758) - (TEREBRIDAE)
- caeruleum, Cerithium caeruleum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- caeruleum minima, Cerithium caeruleum minima H. Fischer & L. Vignal, 1901 - syn of: Cerithium caeruleum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- caeruleum schroeteri, Cerithium caeruleum schroeteri (O.A.L. Mörch, 1852) - (CERITHIIDAE)
- caeruleus, Cystiscus caeruleus F. Boyer, 2003 - (CYSTISCIDAE)
- caeruleus, Mycetopus caeruleus P.M. Heude, 1885 - syn of: Solenaia oleivorus (P.M. Heude, 1877) - (MYCETOPODIDAE)
- caerulifluminis, Sonorella caerulifluminis H.A. Pilsbry & J.H. Ferriss, 1919 - (HELMINTHOGLYPTIDAE)
- caerulus, Choromytilus caerulus J.I. Molina, 1782 - syn of: Choromytilus chorus (Molina, 1782) - (MYTILIDAE)
- caesa, Agardhiella caesa (C.A. Westerlund, 1876) - (ARGNIDAE)
- caesa, Pedicamista caesa (C.M.D.E. Legrand, 1871) - (PUNCTIDAE)
- caesar, Helicostyla caesar (L. Pfeiffer, 1854) - (BRADYBAENIDAE)
- caesarea, Alopia canescens caesarea M. von Kimakowicz, 1894 - (CLAUSILIIDAE)
- caesareana, Levantina caesareana (A. Mousson, 1854) - (HELICIDAE)
- Caesarella, syn of: Genus Caracollina H.H. Beck, 1837 (TRISSEXODONTIDAE)
- caesari, Nicimitoceras caesari (W. Korn, 1984 †) - (GATTENDORFIIDAE) (FOSSIL)
- caesari, Acutimitoceras caesari W. Korn, 1984 † - syn of: Nicimitoceras caesari (W. Korn, 1984 †) - (GATTENDORFIIDAE) (FOSSIL)
- Caesariella, Genus Caesariella Liljedahl, 1984 † (NUCULIDA (UNASSIGNED)) (FOSSIL)
- caesarina, Periglypta caesarina (W.H. Dall, 1903 †) - (VENERIDAE) (FOSSIL)
- caesia, Achatinella caesia J.T. Gulick, 1858 - (ACHATINELLIDAE)
- caesia, Agardhiella parreyssii caesia (C.A. Westerlund, 1876) - (ARGNIDAE)
- caesia, Montenegrina okolensis caesia Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- caesia, Dendrodoris caesia (L.S.R. Bergh, 1907) - (DENDRODORIDIDAE)
- caesia, Zebrina caesia O. Böttger, 1885 - (ENIDAE)
- Caesia, Subgenus Nassarius (Caesia) Adams & Adams, 1853 † (NASSARIIDAE) (FOSSIL)
- Caesia, syn of: Genus Nassarius Duméril, 1805 (NASSARIIDAE)
- caesia cervina, Achatinella caesia cervina J.T. Gulick, 1858 - (ACHATINELLIDAE)
- caesia cognata, Achatinella caesia cognata J.T. Gulick, 1858 - (ACHATINELLIDAE)
- caesia concidens, Achatinella caesia concidens J.T. Gulick, 1858 - (ACHATINELLIDAE)
- caesia littoralis, Achatinella caesia littoralis H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- caesiapicta, Achatinella bulimoides caesiapicta D.A. Welch, 1954 - (ACHATINELLIDAE)
- caesicium, Parvamussium caesicium H.H. Dijkstra & R.G. Moolenbeek, 2008 - (PROPEAMUSSIIDAE)
- caesitius, Dermatobranchus caesitius T.M. Gosliner & S.J. Fahey, 2011 - (ARMINIDAE)
- caesius, Conus caesius P.F. Röding, 1798 - syn of: Pionoconus magus (C. Linnaeus, 1758) - (CONIDAE)
- caespitosa, Sellaea caespitosa (di Stefano 1889) † - (CAPRINULIDAE) (FOSSIL)
- Caesticorbula, syn of: Genus Caestocorbula Vincent, 1910 (CORBULIDAE)
- Caestocorbula, Genus Caestocorbula Vincent, 1910 (CORBULIDAE)
- caestus, Vasum caestus (W.J. Broderip, 1833) - (TURBINELLIDAE)
- caesura, Fustiaria caesura (P.H. Colman, 1958) - (FUSTIARIIDAE)
- caesura, Pseudantalis caesura P.H. Colman, 1958 - syn of: Fustiaria caesura (P.H. Colman, 1958) - (FUSTIARIIDAE)
- caffea, Turcica caffea (W.M. Gabb, 1865) - (CHILODONTIDAE)
- caffer, Cucullus caffer P.F. Röding, 1798 - syn of: Leporiconus coffeae (J.F. Gmelin, 1791) - (CONIDAE)
- caffer, Conus caffer C.F.F. von Krauss, 1848 - syn of: Sciteconus mozambicus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- caffer, Melampus caffer H.C. Küster, 1843 - syn of: Melampus lividus (G.P. Deshayes, 1830) - (ELLOBIIDAE)
- caffer, Unio caffer (C.F.F. von Krauss, 1848) - (UNIONIDAE)
- Cafferia, Genus Cafferia Simpson, 1900 (UNIONIDAE)
- caffra, Ancilla albisulcata caffra G.B. Sowerby, 1870 - (ANCILLARIIDAE)
- caffra, Barleeia caffra (G.B. III Sowerby, 1897) - (BARLEEIIDAE)
- caffra, Edouardia caffra (L. Pfeiffer, 1848) - (CERASTUIDAE)
- caffra, Clionella caffra E.A. Smith, 1882 - syn of: Drillia caffra (E.A. Smith, 1882) - (CLAVATULIDAE)
- caffra, Vexillum caffra A.G. Olivi, 1792 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- caffra, Drillia caffra (E.A. Smith, 1882) - (DRILLIIDAE)
- caffra, Mitra caffra A. Scacchi, 1836 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- caffra, Ancylastrum caffra (C.F.F. von Krauss, 1848) - (PLANORBIDAE)
- caffra, Natalina caffra A.E.J. Férussac, 1821 - syn of: Natalina cafra (A.E.J. Férussac, 1821) - (RHYTIDIDAE)
- caffra, Pleurotoma caffra E.A. Smith, 1882 - syn of: Drillia caffra (E.A. Smith, 1882) - (TURRIDAE)
- caffra, Cafferia caffra (C.F.F. von Krauss, 1848) - syn of: Unio caffer (C.F.F. von Krauss, 1848) - (UNIONIDAE)
- caffra, Voluta caffra C. Linnaeus, 1758 - syn of: Vexillum vulpecula (C. Linnaeus, 1758) - (VOLUTIDAE)
- caffrum, Vexillum caffrum (C. Linnaeus, 1758) - (COSTELLARIIDAE)
- caficii, Cochlostoma caficii L. Benoit, 1882 - syn of: Cochlostoma paladilhianum A.de Saint-Simon, 1869 - (COCHLOSTOMATIDAE)
- cafra, Natalina cafra (A.E.J. Férussac, 1821) - (RHYTIDIDAE)
- cafra natalensis, Natalina cafra natalensis C.V. Meade, 2005 - (RHYTIDIDAE)
- cafria, Barbatia cafria P. Bartsch, 1915 - syn of: Sheldonella lateralis (L.A. Reeve, 1844) - (ARCIDAE)
- cafria, Sheldonella cafria P. Bartsch, 1915 - syn of: Sheldonella lateralis (L.A. Reeve, 1844) - (NOETIIDAE)
- cagarralensis, Africonus cagarralensis T. Cossignani, 2014 - (CONIDAE)
- cagayanica, Macrochlamys cagayanica (J.F. Quadras & O.F. von Möllendorff, 1896) - (ARIOPHANTIDAE)
- cagliaritanus, Bolinus brandaris cagliaritanus F. Settepassi, 1977 - (MURICIDAE)
- Cagliceras, Genus Cagliceras Rulleau & Elmi, 2001 † (HAMMATOCERATIDAE) (FOSSIL)
- cagnii, Astarte cagnii C. Pollonera, 1901 - syn of: Astarte arctica (J.E. Gray, 1824) - (ASTARTIDAE)
- caguanense, Opisthosiphon caguanense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- caguanensis, Cochlodinella caguanensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cagurana, Cochlostyla fictilis cagurana P. Bartsch, 1932 - (BRADYBAENIDAE)
- cahabensis, Clappia cahabensis W.J. Clench, 1965 - (LITHOGLYPHIDAE)
- cahalii, Pseudocymia cahalii W.P. Popenoe & Saul, 1987 † - (PERISSITYIDAE) (FOSSIL)
- cahawbensis, Lepyrium cahawbensis (H.A. Pilsbry, 1906) - (LITHOGLYPHIDAE)
- cahawbensis, Rhodacmea cahawbensis (B. Walker, 1917) - (PLANORBIDAE)
- cahawbensis, Elimia cahawbensis I. Lea, 1861 - (PLEUROCERIDAE)
- cahawbensis fraterna, Elimia cahawbensis fraterna I. Lea, 1864 - (PLEUROCERIDAE)
- caheni, Trisidos caheni Freneix 1979 † - (ARCIDAE) (FOSSIL)
- caheni, Tortucardia caheni Dartevelle & Freneix 1957 † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- caheni, Deltoidonautilus caheni Miller, 1951 † - (HERCOGLOSSIDAE) (FOSSIL)
- cahni, Penitella cahni J.T. Kuroda, 1950 - (PHOLADIDAE)
- cahobasensis, Striostrea cahobasensis (H.A. Pilsbry & J. Brown, 1910 †) - (OSTREIDAE) (FOSSIL)
- cahuelmensis, Mysella cahuelmensis Güller & D.G. Zelaya, 2012 - (MONTACUTIDAE)
- cahuillensis, Turritella cahuillensis H.F.A. von Ihering, 1907 † - (TURRITELLIDAE) (FOSSIL)
- Cahuillus, Genus Cahuillus B. Roth, 1996 (CEPOLIDAE)
- cahuitaense, Prunum cahuitaense J. Magaña, J. Espinosa & J.A. Ortea, 2003 - (MARGINELLIDAE)
- cahuitensis, Nucula cahuitensis A.A. Olsson, 1922 † - (NUCULIDAE) (FOSSIL)
- cahuzaci, Cernuella cahuzaci J.R. Bourguignat in P. Fagot, 1883 - syn of: Cernuella neglecta (J.P.R. Draparnaud, 1805) - (HYGROMIIDAE)
- caicayensis, Steinmanella caicayensis Lazo & Luci, 2013 † - (STEINMANELLIDAE) (FOSSIL)
- caicedi, Heinzia caicedi (D.L.G. Karsten, 1856 †) - (PULCHELLIIDAE) (FOSSIL)
- caicedi, Subpulchellia caicedi D.L.G. Karsten, 1856 † - syn of: Heinzia caicedi (D.L.G. Karsten, 1856 †) - (PULCHELLIIDAE) (FOSSIL)
- caicosense, Cerion caicosense W.J. Clench, 1937 - (CERIONIDAE)
- caietana, Papillifera solida caietana (E.A. Rossmässler, 1842) - (CLAUSILIIDAE)
- caifassii, Minolia caifassii G. Caramagna, 1888 - (SOLARIELLIDAE)
- caiguanaboensis, Ventricochis caiguanaboensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- caiguanaboensis, Organocoptis caiguanaboensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Cailbornicardia, syn of: Subgenus Venericardia (Claibornicardia) H.B. Stenzel & A. Krause, 1957 † (CARDITIDAE) (FOSSIL)
- caillati, Clavagella caillati G.P. Deshayes, 1856 † - (CLAVAGELLIDAE) (FOSSIL)
- caillati, Cirsochilus caillati (G.P. Deshayes, 1863 †) - (COLLONIIDAE) (FOSSIL)
- caillati, Pseudomiltha caillati (G.P. Deshayes, 1857 †) - (LUCINIDAE) (FOSSIL)
- caillati, Ponderia caillati (G.P. Deshayes, 1865 †) - (MURICIDAE) (FOSSIL)
- caillati, Natica caillati G.P. Deshayes, 1864 † - (NATICIDAE) (FOSSIL)
- caillati, Cucullaria caillati (G.P. Deshayes, 1858 †) - (PARALLELODONTIDAE) (FOSSIL)
- caillati, Psammobia caillati G.P. Deshayes, 1857 † - (PSAMMOBIIDAE) (FOSSIL)
- caillati, Turritella caillati G.P. Deshayes, 1861 † - (TURRITELLIDAE) (FOSSIL)
- caillaudi, Limicolaria caillaudi L. Pfeiffer, 1850 - syn of: Limicolaria cailliauidi (L. Pfeiffer, 1850) - (ACHATINIDAE)
- caillaudi, Helicostyla caillaudi G.P. Deshayes, 1839 - (BRADYBAENIDAE)
- caillaudi, Conus caillaudi J.C. Jay, 1846 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- caillaudi, Etheria caillaudi G.L.C.F.D. Cuvier, 1817 - syn of: Etheria elliptica J.B.P.A. Lamarck, 1807 - (ETHERIIDAE)
- caillaudi, Spatha caillaudi G. Mandahl-Barth, 1954 - syn of: Chambardia trapezia (E.C. Von Martens, 1897) - (IRIDINIDAE)
- caillaudi, Spatha caillaudi E.C. Von Martens, 1866 - syn of: Chambardia rubens (J.B.P.A. Lamarck, 1819) - (IRIDINIDAE)
- caillaudi, Chlamys caillaudi P. Oppenheim, 1903 † - (PECTINIDAE) (FOSSIL)
- caillaudi, Potamides conicus caillaudi V.L.V. Potiez & A. Michaud, 1838 - (POTAMIDIDAE)
- Caillaudia, Subgenus Gyraulus (Caillaudia) J.R. Bourguignat, 1883 (PLANORBIDAE)
- caillaudianus, Holcodiscus caillaudianus (A.V.M.D. D'Orbigny, 1850 †) - (HOLCODISCIDAE) (FOSSIL)
- caillaudii, Kioconus caillaudii (L.C. Kiener, 1846) - (CONIDAE)
- cailleanus, Pseudotrochus cailleanus P.M.A. Morelet, 1848 - syn of: Bulimus calleanus P.M.A. Morelet, 1848 - (ACHATINIDAE)
- cailleti, Extranodites cailleti (Petitclerc, 1917 †) - (ASPIDOCERATIDAE) (FOSSIL)
- cailleti, Helix cailleti J.C.H. Crosse, 1864 - syn of: Pommerhelix monacha (L. Pfeiffer, 1859) - (HELICIDAE)
- cailleti, Siratus cailleti (S.A.A. Petit De La Saussaye, 1856) - (MURICIDAE)
- cailleti pallidior, Helix cailleti pallidior J.C.H. Crosse, 1864 - syn of: Pommerhelix monacha (L. Pfeiffer, 1859) - (HELICIDAE)
- cailletii, Turbo cailletii P. Fischer & A.C. Bernardi, 1856 - (TURBINIDAE)
- cailletti, Murex cailletti S.A.A. Petit De La Saussaye, 1856 - syn of: Siratus cailleti (S.A.A. Petit De La Saussaye, 1856) - (MURICIDAE)
- cailliaudanus, Jurassiphorus cailliaudanus (A.V.M.D. D'Orbigny, 1853 †) - (TEMNOTROPIDAE) (FOSSIL)
- cailliaudi, Calocochlia cailliaudi (G.P. Deshayes, 1839) - (BRADYBAENIDAE)
- cailliaudi, Conus cailliaudi J.C. Jay, 1846 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- cailliaudi, Cypraea cailliaudi Vasseur, 1881 † - (CYPRAEIDAE) (FOSSIL)
- cailliaudi, Helix cailliaudi G.P. Deshayes, 1839 - syn of: Calocochlia cailliaudi (G.P. Deshayes, 1839) - (HELICIDAE)
- cailliaudi, Phanerotrema cailliaudi Barrois, 1889 † - (PHANEROTREMATIDAE) (FOSSIL)
- cailliaudi, Pirenella cailliaudi V.L.V. Potiez & A. Michaud, 1838 - syn of: Potamides conicus caillaudi V.L.V. Potiez & A. Michaud, 1838 - (POTAMIDIDAE)
- cailliaudi, Rostellaria cailliaudi G.P. Deshayes, 1865 † - (ROSTELLARIIDAE) (FOSSIL)
- cailliaudi, Abra cailliaudi P. Fischer, 1867 - syn of: Abra segmentum (C.A. Récluz, 1843) - (SEMELIDAE)
- cailliaudi, Mesalia cailliaudi A.E.M. Cossmann, 1899 † - (TURRITELLIDAE) (FOSSIL)
- cailliaudi, Sunetta cailliaudi Dufour, 1881 † - (VENERIDAE) (FOSSIL)
- cailliaudii, Galatea cailliaudii A.C. Bernardi, 1860 - (DONACIDAE)
- cailliaudii, Kellia cailliaudii C.A. Récluz, 1857 - syn of: Kellia suborbicularis (G. Montagu, 1803) - (KELLIIDAE)
- cailliaudii, Natica cailliaudii C.A. Récluz, 1850 - syn of: Naticarius onca (P.F. Röding, 1798) - (NATICIDAE)
- cailliaudii, Unio cailliaudii I. Lea, 1836 - syn of: Nitia teretiuscula (R.A. Philippi, 1847) - (UNIONIDAE)
- cailliauidi, Limicolaria cailliauidi (L. Pfeiffer, 1850) - (ACHATINIDAE)
- cailliauidi candidissima, Limicolaria cailliauidi candidissima R.J. Shuttleworth, 1856 - (ACHATINIDAE)
- cailloelensis, Plesiotriton cailloelensis J.M. Pacaud, Ledon & Loubry, 2015 † - (CANCELLARIIDAE) (FOSSIL)
- cailludi, Anodonta cailludi I. Lea, 1866 - syn of: Anodontites trapezea (J.B. von Spix & J.A. Wagner, 1827) - (UNIONIDAE)
- caimitaca, Cunearca caimitaca C.J. Maury, 1917 † - (ARCIDAE) (FOSSIL)
- caimitana, Nitidella caimitana P.O. Jung, 1994 † - (COLUMBELLIDAE) (FOSSIL)
- caimitensis, Chondrothyrella tenebrosa caimitensis C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- caimitensis, Sagracoptis robusta caimitensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- caimitensis, Tomelasmus irroratus caimitensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- caimitica, Chama caimitica C.J. Maury, 1917 † - (CHAMIDAE) (FOSSIL)
- caimitica, Cuneocorbula caimitica C.J. Maury, 1917 † - syn of: Caryocorbula sericea W.H. Dall, 1898 † - (CORBULIDAE) (FOSSIL)
- caimitica, Cythara caimitica C.J. Maury, 1917 † - (MANGELIIDAE) (FOSSIL)
- caimitica, Strigilla caimitica C.J. Maury, 1917 † - (TELLINIDAE) (FOSSIL)
- caimitica, Petricola caimitica C.J. Maury, 1917 † - (VENERIDAE) (FOSSIL)
- caimiticus, Argopecten eccentricus caimiticus C.J. Maury, 1917 - (PECTINIDAE)
- cainallensis, Worthenia cainallensis E.A.L. Kittl, 1899 † - (LOPHOSPIRIDAE) (FOSSIL)
- cainalli, Eulima cainalli Stoppani, 1857 † - syn of: Omphaloptycha turris (Stoppani, 1857 †) - (EULIMIDAE) (FOSSIL)
- cainalli, Natica cainalli Stoppani, 1857 † - syn of: Hologyra fastigiata (Stoppani, 1857 †) - (NATICIDAE) (FOSSIL)
- cainalli, Trochus cainalli Stoppani, 1858 † - syn of: Orthostomia ambrosinii Stoppani, 1858 † - (TROCHIDAE) (FOSSIL)
- cainalloi, Platychilina cainalloi (Stoppani, 1857 †) - (DELPHINULOPSIDAE) (FOSSIL)
- cainardi, Glossodoris cainardi E.F. Kelaart, MS L.S.R. Bergh, 1891 - syn of: Glossodoris barnardi E.F. Kelaart, MS C. Collingwood, 1868 - (CHROMODORIDIDAE)
- cainense, Platycuccoceras cainense Bucher, 1992 † - (BALATONITIDAE) (FOSSIL)
- cainiewa, Lacunopsis cainiewa D.H.S. Davis, 1985 - (POMATIOPSIDAE)
- Cainoceras, syn of: Genus Goodhallites Spath , 1932 † (BRANCOCERATIDAE) (FOSSIL)
- cainozoica, Tellina cainozoica Tenison Woods, 1877 † - (TELLINIDAE) (FOSSIL)
- cainozoica, Marama cainozoica (Tenison Woods 1877 †) - (VENERIDAE) (FOSSIL)
- cainozoicus, Glycymeris cainozoicus Tenison Woods, 1877 † - (GLYCYMERIDIDAE) (FOSSIL)
- cainozoicus, Notogrammatodon cainozoicus (R. Tate, 1886 †) - (PARALLELODONTIDAE) (FOSSIL)
- caipira, Unio caipira H.F.A. von Ihering, 1893 - syn of: Diplodon expansus (H.C. Küster, 1853) - (UNIONIDAE)
- cairense, Rostellaria cairense Cuvillier, 1933 † - (ROSTELLARIIDAE) (FOSSIL)
- cairnesi, Myophoria cairnesi McLearn, 1942 † - (MYOPHORIIDAE) (FOSSIL)
- cairni, Hemiplecta cairni (E.A. Smith) - (ARIOPHANTIDAE)
- cairnsi, Plectopylis cairnsi (G.P.L.K. Gude, 1898) - (PLECTOPYLIDAE)
- cairnsiana, Erronea cairnsiana J.C. Melvill & R. Standen, 1904 - syn of: Erronea caurica (C. Linnaeus, 1758) - (CYPRAEIDAE)
- cairnsiana, Haminoea cairnsiana J.C. Melvill & R. Standen, 1895 - (HAMINOEIDAE)
- cairoensis, Lithoconus cairoensis Abbass, 1967 † - (CONIDAE) (FOSSIL)
- cairoma, Dentimargo cairoma (J. Brookes, 1924) - (MARGINELLIDAE)
- cairoma, Marginella cairoma J. Brookes, 1924 - syn of: Dentimargo cairoma (J. Brookes, 1924) - (MARGINELLIDAE)
- cairoma aoteana, Dentimargo cairoma aoteana A.W.B. Powell, 1932 - syn of: Dentimargo cairoma (J. Brookes, 1924) - (MARGINELLIDAE)
- caitlinae, Favartia caitlinae (E.J. Petuch & R.F. Myers, 2014) - (MURICIDAE)
- caitlinae, Naudoliva caitlinae R.N. Kilburn, 1989 - (PSEUDOLIVIDAE)
- caiyingyai, Cerithideopsilla caiyingyai (Z.X. Qian, Y. Fang & J. He, 2013) - (POTAMIDIDAE)
- cajamarcana, Steeriana cajamarcana W.K. Weyrauch & A. Zilch, 1954 - (CLAUSILIIDAE)
- cajamarcana pomabambensis, Steeriana cajamarcana pomabambensis (F.E. Loosjes & F.E. Loosjes, 1989) - (CLAUSILIIDAE)
- cajamarcana solutilabrum, Steeriana cajamarcana solutilabrum H. Nordsieck, 2005 - (CLAUSILIIDAE)
- cajamarcana sororminor, Steeriana cajamarcana sororminor H. Nordsieck, 2005 - (CLAUSILIIDAE)
- cajennensis, Neritina cajennensis E. Rigacci, 1866 - syn of: Neritina virginea (C. Linnaeus, 1758) - (NERITIDAE)
- cajetanus, Chiton cajetanus G.S. Poli, 1791 - syn of: Lepidopleurus cajetanus (G.S. Poli, 1791) - (CHITONIDAE)
- cajetanus, Lepidopleurus cajetanus (G.S. Poli, 1791) - (LEPTOCHITONIDAE)
- caji, Melania caji Š. Brusina, 1878 † - syn of: Holandriana gaji (Š. Brusina, 1878 †) - (THIARIDAE) (FOSSIL)
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