- cobalcescui, Valvata cobalcescui Š. Brusina, 1885 † - (VALVATIDAE) (FOSSIL)
- cobalcescui ismailensis, Valvata cobalcescui ismailensis (Gozhik, 2007 †) - (VALVATIDAE) (FOSSIL)
- cobalcescui porrecta, Valvata cobalcescui porrecta (Gozhik in Gozhik & Datsenko, 2007 †) - (VALVATIDAE) (FOSSIL)
- cobanensis, Deroceras cobanensis (J.C.H. Crosse & P.H. Fischer, 1872) - (AGRIOLIMACIDAE)
- cobanensis, Streptostyla meridana cobanensis (H.B. Tristram, 1861) - (SPIRAXIDAE)
- cobanensis, Volutaxis sulciferus cobanensis (P.H. Fischer & J.C.H. Crosse, 1877) - (SPIRAXIDAE)
- cobarrubia, Cerion cobarrubia C.G. Aguayo & M.L. Jaume, 1951 - (CERIONIDAE)
- cobbani, Watinoceras cobbani M. Collignon, 1966 † - (ACANTHOCERATIDAE) (FOSSIL)
- cobbani, Mantelliceras cobbani Amédro, 1993 † - (ACANTHOCERATIDAE) (FOSSIL)
- cobbani, Plesiacanthoceras wyomingense cobbani Atabekjan, 1985 † - (ACANTHOCERATIDAE) (FOSSIL)
- cobbani, Baculites cobbani Khakimov, 1976 † - (BACULITIDAE) (FOSSIL)
- cobbani, Actinocamax cobbani C.C. Christensen, 1993 † - (BELEMNITELLIDAE) (FOSSIL)
- cobbani, Yabeiceras cobbani J. Kennedy & Wright, 1983 † - (COLLIGNONICERATIDAE) (FOSSIL)
- cobbani, Prionocyclus cobbani E. Matsumoto, 1965 † - (COLLIGNONICERATIDAE) (FOSSIL)
- cobbani, Scaphites cobbani Birkelund, 1965 † - (SCAPHITIDAE) (FOSSIL)
- cobbani, Otoscaphites cobbani M. Collignon, 1965 † - (SCAPHITIDAE) (FOSSIL)
- cobbani, Thyasira becca cobbani Kauffman, 1967 † - (THYASIRIDAE) (FOSSIL)
- cobbani, Turritella cobbani Kirkland, 1996 † - (TURRITELLIDAE) (FOSSIL)
- Cobbanites, Genus Cobbanites Imlay , 1962 † (PERISPHINCTIDAE) (FOSSIL)
- Cobbanoceras, Genus Cobbanoceras Matsumoto, 1965 † (COLLIGNONICERATIDAE) (FOSSIL)
- Cobbanoscaphites, syn of: Genus Menuites Spath , 1922 † (PACHYDISCIDAE) (FOSSIL)
- cobbensis, Protowenella cobbensis MacKinnon, 1985 † - (HELCIONELLIDAE) (FOSSIL)
- cobbi, Gadila cobbi K.L. Lamprell & J.M. Healy, 1998 - (GADILIDAE)
- cobbi, Neolepton cobbi (J.E. Cooper & H.B. Preston, 1910) - (NEOLEPTONIDAE)
- cobboldae, Truncacila cobboldae (J. de C. Sowerby, 1817 †) - (NUCULIDAE) (FOSSIL)
- cobboldiae, Neptunea despecta cobboldiae (F.W. Harmer, 1899 †) - (BUCCINIDAE) (FOSSIL)
- cobboldiae, Nucula cobboldiae J. de C. Sowerby, 1817 † - syn of: Truncacila cobboldae (J. de C. Sowerby, 1817 †) - (NUCULIDAE) (FOSSIL)
- Cobboldiella, Genus Cobboldiella Kerber, 1988 † (GLOBORILIDAE) (FOSSIL)
- Cobcrephora, Genus Cobcrephora Bischoff, 1981 † (PALEOLORICATA (UNASSIGNED)) (FOSSIL)
- cobelliana, Anodonta cobelliana G.B. Adami, 1886 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- cobhamensis, Astarte cobhamensis Ward, 1992 † - (ASTARTIDAE) (FOSSIL)
- cobijensis, Heliacus cobijensis F. Paetel & L.W. Schaufuss, 1869 - (ARCHITECTONICIDAE)
- cobosi, Iberus marmoratus cobosi (C.M. Ibáñez & M.R. Alonso, 1977) - (HELICIDAE)
- cobosi, Gasullia cobosi A. Ortiz De Zárate, 1962 - syn of: Hatumia cobosi (A. Ortiz De Zárate, 1962) - (HELICODONTIDAE)
- cobosi, Xerocrassa cobosi A. Ortiz De Zárate, 1962 - syn of: Hatumia cobosi (A. Ortiz De Zárate, 1962) - (HYGROMIIDAE)
- cobosi, Amandana cobosi A. Ortiz De Zárate, 1962 - syn of: Hatumia cobosi (A. Ortiz De Zárate, 1962) - (HYGROMIIDAE)
- cobosi, Hatumia cobosi (A. Ortiz De Zárate, 1962) - (TRISSEXODONTIDAE)
- cobosi, Oestophora cobosi A. Ortiz De Zárate, 1962 - syn of: Hatumia cobosi (A. Ortiz De Zárate, 1962) - (TRISSEXODONTIDAE)
- cobourgensis, Probillingsites cobourgensis Flower, 1952 † - (PROBILLINGSITIDAE) (FOSSIL)
- cobra, Dentiovula cobra C.N. Cate, 1975 - syn of: Dentiovula eizoi C.N. Cate & M. Azuma in C.N. Cate, 1973 - (OVULIDAE)
- Cobracephalus, Genus Cobracephalus Whidborne, 1897 † (PTERIIDAE) (FOSSIL)
- Cobresia, syn of: Genus Vitrina J.P.R. Draparnaud, 1801 (VITRINIDAE)
- cobscooki, Palaeopecten cobscooki Williams, 1913 † - (LEIOPECTINIDAE) (FOSSIL)
- cocaensis, Columbinia cocaensis (F.P. Jousseaume, 1900) - (CLAUSILIIDAE)
- cocaensis, Tetrentodon cocaensis M.L. Jaume & C. de la Torre, 1975 - (UROCOPTIDAE)
- cocaensis, Gongylostoma planospira cocaensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- cocandi, Aeolidia cocandi J.B. Vérany, 1862 - syn of: Aeolidia cocandiana J.B. Vérany, 1865 - (AEOLIDIIDAE)
- cocandiana, Aeolidia cocandiana J.B. Vérany, 1865 - (AEOLIDIIDAE)
- cocceus, Floraconus cocceus (L.A. Reeve, 1844) - (CONIDAE)
- cocchi, Chondrina cocchi L. Benoit, 1882 - syn of: Chondrina avenacea (J.G. Bruguière, 1792) - (CHONDRINIDAE)
- coccinata, Pupa coccinata (L.A. Reeve, 1842) - (ACTEONIDAE)
- coccinata, Amalda coccinata R.N. Kilburn, 1980 - (ANCILLARIIDAE)
- coccinata, Splendrillia coccinata (L.A. Reeve, 1845) - (DRILLIIDAE)
- coccinata, Oliva carneola coccinata P. Dautzenberg, 1927 - (OLIVIDAE)
- coccinata, Pleurotoma coccinata L.A. Reeve, 1845 - syn of: Splendrillia coccinata (L.A. Reeve, 1845) - (TURRIDAE)
- coccinea, Ancilla coccinea C. Hedley, 1914 - syn of: Amalda coccinata R.N. Kilburn, 1980 - (ANCILLARIIDAE)
- coccinea, Pollia coccinea T.A. de M. Monterosato, 1884 - syn of: Pollia dorbignyi (B.C.M. Payraudeau, 1826) - (BUCCINIDAE)
- coccinea, Lienardia coccinea (H.E. Anton, 1838) - (CLATHURELLIDAE)
- coccinea, Mitrella coccinea (R.A. Philippi, 1836) - (COLUMBELLIDAE)
- coccinea, Doris coccinea E. Forbes in J. Alder & A. Hancock, 1848 - syn of: Rostanga rubra (A. Risso, 1818) - (DORIDIDAE)
- coccinea, Gaimardia coccinea C. Hedley, 1916 - (GAIMARDIIDAE)
- coccinea, Gymnodoris coccinea (C.N.E. Eliot, 1904) - (GYMNODORIDIDAE)
- coccinea, Haliotis coccinea F. Nordsieck, 1975 - syn of: Haliotis tuberculata coccinea L.A. Reeve, 1846 - (HALIOTIDAE)
- coccinea, Haliotis tuberculata coccinea L.A. Reeve, 1846 - (HALIOTIDAE)
- coccinea, Littoraria coccinea (J.F. Gmelin, 1791) - (LITTORINIDAE)
- coccinea, Mitra coccinea M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1882 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- coccinea, Tellina coccinea G.B. Sowerby, 1869 - (TELLINIDAE)
- coccinea, Pseudostomatella coccinea (A. Adams, 1850) - (TROCHIDAE)
- coccinea, Callista coccinea G.S. Poli, 1795 - syn of: Callista chione (C. Linnaeus, 1758) - (VENERIDAE)
- coccinea flammulata, Pseudostomatella coccinea flammulata (H.A. Pilsbry, 1920) - (TROCHIDAE)
- coccinea glabrata, Littoraria coccinea glabrata (R.A. Philippi, 1846) - (LITTORINIDAE)
- coccinella, Buccinum coccinella J.B.P.A. Lamarck, 1822 - syn of: Tritia incrassata (H. Strøm, 1768) - (BUCCINIDAE)
- coccinella, Cypraea coccinella J.B.P.A. Lamarck, 1811 - syn of: Trivia monacha (da Costa, 1778) - (CYPRAEIDAE)
- coccinella, Palmadusta humphreyii coccinella F.Jr. Lorenz & A. Hubert, 1999 - (CYPRAEIDAE)
- Coccinella, syn of: Genus Trivia W.J. Broderip, 1837 (TRIVIIDAE)
- coccinelloides, Trivia coccinelloides (J. de C. Sowerby, 1823 †) - (TRIVIIDAE) (FOSSIL)
- coccinelloides parvula, Trivia coccinelloides parvula Schilder, 1933 † - (TRIVIIDAE) (FOSSIL)
- coccineum, Vexillum coccineum (L.A. Reeve, 1844) - (COSTELLARIIDAE)
- coccineum, Pleurobema coccineum C.S. Rafinesque, 1820 - syn of: Pleurobema sintoxia C.S. Rafinesque, 1820 - (UNIONIDAE)
- coccineum, Pleurobema cordatum coccineum T.A. Conrad, 1836 - (UNIONIDAE)
- coccineus, Rubroconus coccineus (J.F. Gmelin, 1791) - (CONIDAE)
- coccineus, Murex coccineus A. Adams, 1854 - syn of: Favartia minirosea (R.T. Abbott, 1954) - (MURICIDAE)
- coccineus, Murex coccineus R.P. Lesson, 1844 - syn of: Hexaplex erythrostomus (W.J. Swainson, 1831) - (MURICIDAE)
- coccineus, Spondylus coccineus J.B.P.A. Lamarck, 1819 - (SPONDYLIDAE)
- coccineus, Spondylus coccineus G.B. II Sowerby, 1847 - syn of: Spondylus nicobaricus K. Schreibers, 1793 - (SPONDYLIDAE)
- coccineus, Turbo coccineus J.K. Megerle Von Mühlfeld, 1816 - syn of: Homalopoma sanguineus (C. Linnaeus, 1758) - (TURBINIDAE)
- coccineus, Unio coccineus T.A. Conrad, 1836 - syn of: Pleurobema sintoxia C.S. Rafinesque, 1820 - (UNIONIDAE)
- coccinostoma, Helicina coccinostoma P.M.A. Morelet, 1849 - syn of: Succincta oweniana coccinostoma (P.M.A. Morelet, 1849) - (HELICINIDAE)
- coccinostoma, Succincta oweniana coccinostoma (P.M.A. Morelet, 1849) - (HELICINIDAE)
- cocco, Pteroctopus cocco J.B. Vérany, 1846 - syn of: Pteroctopus tetracirrhus (S. Delle Chiaje, 1830) - (OCTOPODIDAE)
- cocco, Scaeurgus cocco A. Risso, 1854 - syn of: Scaeurgus unicirrhus (S. Delle Chiaje, 1841) - (OCTOPODIDAE)
- Coccocrater, Genus Coccocrater G. Haszprunar, 1987 (COCCULINIDAE)
- Coccodentalium, Genus Coccodentalium F. Sacco, 1896 (DENTALIIDAE)
- Coccoderma, syn of: Genus Apoecus W. Kobelt, 1902 (CERASTUIDAE)
- Coccoderma, Genus Coccoderma O.F. von Möllendorff, 1901 (ENIDAE)
- Coccoglypta, Genus Coccoglypta H.A. Pilsbry, 1895 (BRADYBAENIDAE)
- coccoglypta, Succinea tenerrima coccoglypta C.M.F. Ancey, 1904 - (SUCCINEIDAE)
- coccomelos, Calocochlia coccomelos G.B. I Sowerby, 1841 - (BRADYBAENIDAE)
- coccomelos mollendorfi, Calocochlia coccomelos mollendorfi H.A. Pilsbry, 1908 - (BRADYBAENIDAE)
- coccomelos princeps, Calocochlia coccomelos princeps (G.B. I Sowerby, 1841) - (BRADYBAENIDAE)
- cocconii, Caryocorbula cocconii C.F. Fontannes, 1881 † - (CORBULIDAE) (FOSSIL)
- cocconii, Miolyncina cocconii (Mayer-Eymar, 1875 †) - (CYPRAEIDAE) (FOSSIL)
- Coccopigya, Genus Coccopigya B.A. Marshall, 1986 (COCCULINIDAE)
- Coccopygia, syn of: Genus Coccopigya B.A. Marshall, 1986 (COCCULINIDAE)
- coccoradiata, Haliotis coccoradiata L.A. Reeve, 1846 - (HALIOTIDAE)
- coccos, Drillia coccos A.A. Olsson, 1922 † - (DRILLIIDAE) (FOSSIL)
- Coccoslens, Subgenus Habroconus (Coccoslens) F.C. Baker, 1941 (EUCONULIDAE)
- coccovelli, Helix coccovelli W. Kobelt, 1904 - syn of: Ambigua fuscolabiata saprensis (W. Kobelt, 1904) - (HELICIDAE)
- Cocculina, Genus Cocculina W.H. Dall, 1882 (COCCULINIDAE)
- Cocculinella, Genus Cocculinella K.H.J. Thiele, 1909 (COCCULINELLIDAE)
- COCCULINELLIDAE Moskalev, 1971 - Family (GASTROPODA-VETIGASTROPODA [Subclass]-LEPETELLOIDEA [Superfamily])
- COCCULINIDAE Dall, 1882 - Family (GASTROPODA-COCCULINIFORMIA [Subclass]-COCCULINOIDEA [Superfamily])
- coccus, Bathyarca coccus (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (ARCIDAE)
- coccus, Callistochiton coccus (K.T. Menke, 1844) - (CALLISTOPLACIDAE)
- coccygea, Phaedusa coccygea (P.V. Gredler, 1887) - (CLAUSILIIDAE)
- coccyginus, Cenodagreutes coccyginus E.H. Smith, 1967 - (RAPHITOMIDAE)
- coccymelus, Chesapecten coccymelus (W.H. Dall, 1898 †) - (PECTINIDAE) (FOSSIL)
- cochambalensis, Drymaeus scitulus cochambalensis W.K. Weyrauch, 1916 - (BULIMULIDAE)
- cochenhauseni, Electroma cochenhauseni R.W. Dunker, 1872 - syn of: Electroma alacorvi (L.W. Dillwyn, 1817) - (PTERIIDAE)
- cochensis, Eratoidea cochensis T. McCleery, 2011 - (MARGINELLIDAE)
- cocheti, Moitessieria cocheti H.D. Boeters & G. Falkner, 2003 - (MOITESSIERIIDAE)
- cochimana, Turbonilla cochimana A.M. Strong, 1949 - (PYRAMIDELLIDAE)
- cochimi, Okenia cochimi T.M. Gosliner & H.W. Bertsch, 2004 - (GONIODORIDIDAE)
- cochinchinensis, Megaustenia cochinchinensis (P.M.A. Morelet, 1866) - (ARIOPHANTIDAE)
- cochinchinensis, Xesta cochinchinensis L. Pfeiffer, 1862 - syn of: Bradybaena cochinchinensis (L. Pfeiffer, 1862) - (ARIOPHANTIDAE)
- cochinchinensis, Bradybaena cochinchinensis (L. Pfeiffer, 1862) - (BRADYBAENIDAE)
- cochinchinensis, Bulimus cochinchinensis L. Pfeiffer, 1857 - syn of: Amphidromus cochinchinensis (L. Pfeiffer, 1857) - (BULIMULIDAE)
- cochinchinensis, Amphidromus cochinchinensis (L. Pfeiffer, 1857) - (CAMAENIDAE)
- cochinchinensis, Phaedusa cochinchinensis (L. Pfeiffer, 1841) - (CLAUSILIIDAE)
- cochinchinensis, Corbicula cochinchinensis S. Clessin, 1887 - syn of: Corbicula tenuis S. Clessin, 1887 - (CYRENIDAE)
- cochinchinensis, Helicarion cochinchinensis P.M.A. Morelet, 1866 - syn of: Megaustenia cochinchinensis (P.M.A. Morelet, 1866) - (HELICARIONIDAE)
- cochinchinensis, Iravadia cochinchinensis (A.R.J.B. Bavay & P. Dautzenberg, 1910) - (IRAVADIIDAE)
- cochinchinensis, Fairbankia cochinchinensis (A.R.J.B. Bavay & P. Dautzenberg, 1910) - syn of: Iravadia cochinchinensis (A.R.J.B. Bavay & P. Dautzenberg, 1910) - (IRAVADIIDAE)
- cochinchinensis, Succinea cochinchinensis L. Pfeiffer, 1863 - (SUCCINEIDAE)
- cochinchinensis, Vitrina cochinchinensis P.M.A. Morelet, 1866 - syn of: Megaustenia cochinchinensis (P.M.A. Morelet, 1866) - (VITRINIDAE)
- cochinella, Lamellaria cochinella L.M. Perry, 1939 - syn of: Lamellaria perspicua (C. Linnaeus, 1758) - (VELUTINIDAE)
- cochinensis, Cuspidaria cochinensis H.B. Preston, 1916 - (CUSPIDARIIDAE)
- cochinensis, Cyrena cochinensis S.C.T. Hanley, 1858 - syn of: Villorita cyprinoides (J.E. Gray, 1825) - (CYRENIDAE)
- cochinensis, Brachidontes cochinensis H.B. Preston, 1909 - syn of: Brachidontes striatulus (S.C.T. Hanley, 1843) - (MYTILIDAE)
- cochinensis, Timoclea cochinensis (G.B. II Sowerby, 1853) - (VENERIDAE)
- cochinensis, Venus cochinensis G.B. II Sowerby, 1853 - syn of: Timoclea cochinensis (G.B. II Sowerby, 1853) - (VENERIDAE)
- Cochiolepis, Genus Cochiolepis Stimpson, 1858 † (TORNIDAE) (FOSSIL)
- cochisei, Holospira danielsi cochisei H.A. Pilsbry & J.H. Ferriss, 1915 - (UROCOPTIDAE)
- cochisensis, Immersidens cochisensis (H.A. Pilsbry & J.H. Ferriss, 1910) - (GASTROCOPTIDAE)
- cochisensis, Omphalotrochus cochisensis E.L. Yochelson, 1956 † - (OMPHALOTROCHIDAE) (FOSSIL)
- cochisensis oligobasodon, Bifidaria cochisensis oligobasodon H.A. Pilsbry & J.H. Ferriss, 1910 - syn of: Immersidens prototypus (H.A. Pilsbry, 1899) - (VERTIGINIDAE)
- cochlaeformis, Cochlicella cochlaeformis T.A. de M. Monterosato, 1892 - syn of: Cochlicella acuta (O.F. Müller, 1774) - (COCHLICELLIDAE)
- cochlaeformis, Mathilda cochlaeformis G.A. Brugnone, 1873 - (MATHILDIDAE)
- cochlea, Achatina cochlea L.A. Reeve - syn of: Carelia cochlea (L.A. Reeve, 1849) - (ACHATINIDAE)
- cochlea, Carelia cochlea (L.A. Reeve, 1849) - (AMASTRIDAE)
- cochlea, Coelostylina cochlea (Münster, 1841 †) - (COELOSTYLINIDAE) (FOSSIL)
- cochlea, Cirsotrema cochlea (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- Cochlea, syn of: Genus Helix C. Linnaeus, 1758 (HELICIDAE)
- cochlea, Pleurotomaria cochlea Münster, 1841 † - (PLEUROTOMARIIDAE) (FOSSIL)
- cochlea, Terebra cochlea (G.P. Deshayes, 1857) - syn of: Oxymeris trochlea (G.P. Deshayes, 1857) - (TEREBRIDAE)
- cochlea, Melania cochlea Münster, 1841 † - syn of: Coelostylina cochlea (Münster, 1841 †) - (THIARIDAE) (FOSSIL)
- cochlea, Turritella cochlea L.A. Reeve, 1849 - (TURRITELLIDAE)
- cochleaformis, Mathilda cochleaformis G.A. Brugnone, 1873 - syn of: Mathilda cochlaeformis G.A. Brugnone, 1873 - (MATHILDIDAE)
- cochlear, Pyrazisinus cochlear (A. Fuchs, 1870 †) - (BATILLARIIDAE) (FOSSIL)
- cochlear, Neopycnodonte cochlear (G.S. Poli, 1795) - (GRYPHAEIDAE)
- Cochlear, Genus Cochlear O.A.L. Mörch, 1877 (HIPPONICIDAE)
- cochlear, Ostrea cochlear G.S. Poli, 1795 - syn of: Neopycnodonte cochlear (G.S. Poli, 1795) - (OSTREIDAE)
- cochlear, Scutellastra cochlear (I. von Born, 1778) - (PATELLIDAE)
- cochlear, Patella cochlear I. von Born, 1778 - syn of: Scutellastra cochlear (I. von Born, 1778) - (PATELLIDAE)
- cochlear, Plicatula cochlear Stefanini, 1939 † - (PLICATULIDAE) (FOSSIL)
- cochlearella, Cuspidaria cochlearella (G.P. Deshayes, 1824 †) - (CUSPIDARIIDAE) (FOSSIL)
- cochlearella, Nuculana cochlearella A.E.M. Cossmann, 1883 † - (NUCULANIDAE) (FOSSIL)
- cochlearella, Attenuata cochlearella (A.W.B. Powell, 1937) - (RISSOIDAE)
- cochlearella, Rissoa cochlearella J.B.P.A. Lamarck, 1825 † - syn of: Rissoina subconoidea (J.P.S. Grateloup, 1847 †) - (RISSOIDAE) (FOSSIL)
- cochlearella, Rissoina cochlearella (J.B.P.A. Lamarck, 1804 †) - (RISSOINIDAE) (FOSSIL)
- cochlearella subconoidea, Rissoa cochlearella subconoidea J.P.S. Grateloup, 1847 † - syn of: Rissoina subconoidea (J.P.S. Grateloup, 1847 †) - (RISSOIDAE) (FOSSIL)
- cochlearia, Scutellastra cochlearia H.M.D. de Blainville, 1825 - syn of: Scutellastra exusta (L.A. Reeve, 1854) - (PATELLIDAE)
- cochleariformis, Siphonaria cochleariformis L.A. Reeve, 1856 - (SIPHONARIIDAE)
- cochlearina, Rissoina cochlearina Meunier, 1880 † - (RISSOINIDAE) (FOSSIL)
- cochlearis, Barbatia cochlearis B. Wade, 1926 † - (ARCIDAE) (FOSSIL)
- cochlearis, Solenosteira cochlearis (R.J.L. Guppy, 1873 †) - (BUCCINIDAE) (FOSSIL)
- cochlearis, Crepidula cochlearis B. de Basterot, 1825 † - (CALYPTRAEIDAE) (FOSSIL)
- cochlearis, Neaera cochlearis R.B. Hinds, 1844 - syn of: Leptomya cochlearis (R.B. Hinds, 1844) - (CUSPIDARIIDAE)
- cochlearis, Periplomya cochlearis (R.B. Hinds, 1844 †) - (LATERNULIDAE) (FOSSIL)
- cochlearis, Ostrea cochlearis É.A.A. Locard, 1886 - syn of: Neopycnodonte cochlear (G.S. Poli, 1795) - (OSTREIDAE)
- cochlearis, Pinna cochlearis H. Fischer, 1901 - syn of: Pinna bicolor J.F. Gmelin, 1791 - (PINNIDAE)
- cochlearis, Leptomya cochlearis (R.B. Hinds, 1844) - (SEMELIDAE)
- cochlearis, Turbo cochlearis A. Braun, 1841 † - (TURBINIDAE) (FOSSIL)
- cochlearis, Pleuroliria cochlearis (T.A. Conrad, 1848 †) - (TURRIDAE) (FOSSIL)
- cochlearis, Anodon cochlearis G.B. Sowerby, 1870 - syn of: Aspatharia pfeifferiana (A.C. Bernardi, 1860) - (UNIONIDAE)
- Cochlearites, Genus Cochlearites Reis, 1903 † (LITHIOTIDAE) (FOSSIL)
- cochleata, Dicroloma cochleata (F.A. von Quenstedt, 1858 †) - (APORRHAIDAE) (FOSSIL)
- cochleata, Alaria cochleata F.A. von Quenstedt, 1858 † - syn of: Dicroloma cochleata (F.A. von Quenstedt, 1858 †) - (APORRHAIDAE) (FOSSIL)
- cochleata, Seila cochleata H.H. Suter, 1908 - syn of: Lyroseila cincta (F.W. Hutton, 1885) - (CERITHIOPSIDAE)
- cochleata, Mimospira cochleata (Lindström, 1884 †) - (CLISOSPIRIDAE) (FOSSIL)
- cochleata, Dreissena cochleata J. Kickx, 1835 - syn of: Mytilopsis leucophaeata (T.A. Conrad, 1831) - (DREISSENIDAE)
- cochleata, Mytilopsis cochleata J. Kickx, 1835 - syn of: Mytilopsis leucophaeata (T.A. Conrad, 1831) - (DREISSENIDAE)
- cochleata, Frodospira cochleata (Lindström, 1884 †) - (LOPHOSPIRIDAE) (FOSSIL)
- cochleata, Murchisonia cochleata Lindström, 1884 † - syn of: Frodospira cochleata (Lindström, 1884 †) - (MURCHISONIIDAE) (FOSSIL)
- cochleata, Pterocardia cochleata (F.A. von Quenstedt, 1852 †) - (PTEROCARDIIDAE) (FOSSIL)
- cochleata, Merelina cochleata A.W.B. Powell, 1937 - (RISSOIDAE)
- cochleata, Rostellaria cochleata F.A. von Quenstedt, 1858 † - syn of: Dicroloma cochleata (F.A. von Quenstedt, 1858 †) - (ROSTELLARIIDAE) (FOSSIL)
- cochleata, Mesalia cochleata (G.B. Brocchi, 1814 †) - (TURRITELLIDAE) (FOSSIL)
- cochleatum, Ascoceras cochleatum Lindstrom, 1890 † - syn of: Lindstroemoceras dolium (Lindstrom, 1890 †) - (ASCOCERATIDAE) (FOSSIL)
- cochleatum, Onychochilus cochleatum Lindström, 1884 † - syn of: Mimospira cochleata (Lindström, 1884 †) - (ONYCHOCHILIDAE) (FOSSIL)
- cochleatus, Mytilopsis cochleatus J. Kickx, 1835 - syn of: Mytilopsis leucophaeata (T.A. Conrad, 1831) - (DREISSENIDAE)
- cochleatus, Fusus cochleatus R. Tate, 1888 † - (FASCIOLARIIDAE) (FOSSIL)
- cochleatus, Mytilus cochleatus J. Kickx, 1835 - syn of: Mytilopsis leucophaeata (T.A. Conrad, 1831) - (MYTILIDAE)
- cochleatus, Didymoceras cochleatus (F.B. Meek & Hayden, 1858 †) - (NOSTOCERATIDAE) (FOSSIL)
- Cochleiferoceras, Genus Cochleiferoceras Shimansky, 1962 † (AGONIATITIDA (UNASSIGNED)) (FOSSIL)
- cochleiformis, Cristispira cochleiformis (W.M. Gabb, 1869 †) - (TURRITELLIDAE) (FOSSIL)
- Cochleochilus, Genus Cochleochilus A.E.M. Cossmann, 1918 (TROCHIDAE)
- cochleoides, Ectomaria cochleoides Yin, 1932 † - syn of: Orthonema cochleoides (Yin, 1932 †) - (LOPHOSPIRIDAE) (FOSSIL)
- cochleoides, Orthonema cochleoides (Yin, 1932 †) - (ORTHONEMATIDAE) (FOSSIL)
- cochleolina, Cochlicella cochleolina T.A. de M. Monterosato, 1892 - syn of: Cochlicella acuta (O.F. Müller, 1774) - (COCHLICELLIDAE)
- Cochleornata, Subgenus Bulimulus (Cochleornata) P.H. Scott, 1976 (BULIMULIDAE)
- Cochlespira, Genus Cochlespira Conrad, 1865 † (COCHLESPIRIDAE) (FOSSIL)
- Cochlespirella, Genus Cochlespirella Heilprin, 1879 † (PALADMETIDAE) (FOSSIL)
- COCHLESPIRIDAE Powell, 1942 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-NEOGASTROPODA [Order]-CONOIDEA [Superfamily])
- Cochlespiropsis, Genus Cochlespiropsis Squires, 2001 † (PALADMETIDAE) (FOSSIL)
- cochleus, Turbo cochleus C. Linnaeus, 1758 - (TURBINIDAE)
- cochliaris, Elimia cochliaris (I. Lea, 1868) - (PLEUROCERIDAE)
- cochlias, Calliostoma cochlias C. Vilvens, 2009 - (CALLIOSTOMATIDAE)
- cochlias, Turritella cochlias J.F. Bayan, 1873 † - (TURRITELLIDAE) (FOSSIL)
- cochliasthetis, Turritella cochliasthetis Orbigny, 1852 † - (TURRITELLIDAE) (FOSSIL)
- Cochlicarina, Genus Cochlicarina Brown, 1843 † (EOTOMARIIDAE) (FOSSIL)
- Cochlicella, Genus Cochlicella A.E.J. Férussac in A. Risso, 1826 (COCHLICELLIDAE)
- COCHLICELLIDAE Schileyko, 1972 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-HELICOIDEA [Superfamily])
- Cochlicellus, syn of: Genus Cochlicella A.E.J. Férussac in A. Risso, 1826 (COCHLICELLIDAE)
- Cochliclona, syn of: Genus Rumina A. Risso, 1826 (SUBULINIDAE)
- Cochliconus, Genus Cochliconus † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Cochlicopa, Genus Cochlicopa A.E.J. Férussac in A. Risso, 1826 (COCHLICOPIDAE)
- COCHLICOPIDAE Pilsbry, 1900 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-COCHLICOPOIDEA [Superfamily])
- cochlicopoides, Turanena cochlicopoides E. Gittenberger & H.P.M.G. Menkhorst, 1993 - (ENIDAE)
- cochlidium, Buccinum cochlidium L.W. Dillwyn, 1817 - syn of: Buccinanops cochlidium (L.W. Dillwyn, 1817) - (BUCCINIDAE)
- cochlidium, Buccinum cochlidium L.C. Kiener, 1834 - syn of: Buccinanops cochlidium gradatum G.P. Deshayes, 1844 - (BUCCINIDAE)
- cochlidium, Egilomen cochlidium (J.C. Cox, 1868) - (CHAROPIDAE)
- cochlidium, Volegalea cochlidium (C. Linnaeus, 1758) - (MELONGENIDAE)
- cochlidium, Pyrula cochlidium C. Linnaeus, 1758 - syn of: Volegalea cochlidium (C. Linnaeus, 1758) - (MELONGENIDAE)
- Cochlidium, syn of: Genus Hemifusus W.J. Swainson, 1840 (MELONGENIDAE)
- cochlidium, Buccinanops cochlidium (L.W. Dillwyn, 1817) - (NASSARIIDAE)
- cochlidium, Euvaricella cochlidium (H.A. Pilsbry, 1907) - (OLEACINIDAE)
- cochlidium, Petaloconchus cochlidium P.P. Carpenter, 1857 - (VERMETIDAE)
- cochlidium carnaria, Volegalea cochlidium carnaria P.F. Röding, 1798 - syn of: Volegalea carnaria (P.F. Röding, 1798) - (MELONGENIDAE)
- cochlidium diademata, Pugilina cochlidium diademata F.M. Bayer, 1952 - syn of: Volegalea cochlidium (C. Linnaeus, 1758) - (MELONGENIDAE)
- cochlidium fulva, Volegalea cochlidium fulva (G.P. Deshayes, 1832) - (MELONGENIDAE)
- cochlidium gradatum, Buccinanops cochlidium gradatum G.P. Deshayes, 1844 - (NASSARIIDAE)
- cochlidium wardiana, Volegalea cochlidium wardiana T. Iredale, 1938 - (MELONGENIDAE)
- Cochlioceras, Genus Cochlioceras Eichwald, 1860 † (BALTOCERATIDAE) (FOSSIL)
- Cochlioconus, syn of: Genus Thatcheria G.F. Angas, 1877 (RAPHITOMIDAE)
- cochliodes, Prosopeas cochliodes (L. Pfeiffer, 1842) - (SUBULINIDAE)
- Cochliolepis, Genus Cochliolepis W. Stimpson, 1958 (TORNIDAE)
- Cochliopa, Genus Cochliopa W. Stimpson, 1865 (COCHLIOPIDAE)
- COCHLIOPIDAE Tryon, 1866 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- Cochliopina, Genus Cochliopina J.P.E. Morrison, 1946 (COCHLIOPIDAE)
- Cochliopopsis, syn of: Genus Stenothyra W.H. Benson, 1856 (STENOTHYRIDAE)
- Cochlis, Genus Cochlis Röding, 1798 (NATICIDAE)
- Cochlitoma, syn of: Genus Achatina J.B.P.A. Lamarck, 1799 (ACHATINIDAE)
- Cochloceras, Genus Cochloceras Hauer, 1860 † (COCHLOCERATIDAE) (FOSSIL)
- COCHLOCERATIDAE Hyatt, 1900 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-CHORISTOCERATOIDEA [Superfamily]) (FOSSIL)
- Cochlocrioceras, Genus Cochlocrioceras Spath, 1950 † (PROTANCYLOCERATIDAE) (FOSSIL)
- Cochlocycla, syn of: Genus Pomatias S.E. Studer, 1789 (POMATIIDAE)
- Cochlodesma, Genus Cochlodesma J.P.Y. Couthouy, 1839 (PERIPLOMATIDAE)
- Cochlodina, Genus Cochlodina A.E.J. Férussac, 1821 (CLAUSILIIDAE)
- Cochlodinastra, Subgenus Cochlodina (Cochlodinastra) H. Nordsieck, 1977 (CLAUSILIIDAE)
- Cochlodinella, Genus Cochlodinella H.A. Pilsbry & E.G. Vanatta, 1898 (UROCOPTIDAE)
- Cochlodon, syn of: Genus Cerion P.F. Röding, 1798 (CERIONIDAE)
- Cochlodonta, syn of: Genus Cerion P.F. Röding, 1798 (CERIONIDAE)
- Cochlodryas, Subgenus Helicostyla (Cochlodryas) E.C. Von Martens, 1860 (BRADYBAENIDAE)
- Cochlogena, Genus Cochlogena Férussac, 1821 (HELICIDAE)
- Cochlohydra, syn of: Genus Succinea J.P.R. Draparnaud, 1801 (SUCCINEIDAE)
- Cochlolepas, syn of: Genus Hipponix J.L.M. Defrance, 1819 (HIPPONICIDAE)
- Cochlopupa, syn of: Genus Cylindrus L.I. Fitzinger, 1833 (HELICIDAE)
- Cochlorina, Genus Cochlorina G. Jan, 1830 (BULIMULIDAE)
- cochlospeleus, Oxychilus cochlospeleus Y. Tzvetkov in Birshtein, 1950 - syn of: Conulopolita cavatica F. Riedel, 1966 - (OXYCHILIDAE)
- Cochlostoma, Genus Cochlostoma G. Jan, 1830 (COCHLOSTOMATIDAE)
- COCHLOSTOMATIDAE Kobelt, 1902 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-ARCHITAENIOGLOSSA [Order]-CYCLOPHOROIDEA [Superfamily])
- Cochlostyla, Subgenus Helicostyla (Cochlostyla) A.E.J. Férussac, 1821 (BRADYBAENIDAE)
- cochlostyloides, Elaphroconcha cochlostyloides M.M. Schepman, 1892 - syn of: Asperitas bimaensis cochlostyloides (M.M. Schepman, 1892) - (ARIOPHANTIDAE)
- cochlostyloides, Asperitas cochlostyloides M.M. Schepman, 1892 - syn of: Asperitas bimaensis cochlostyloides (M.M. Schepman, 1892) - (DYAKIIDAE)
- cochlostyloides, Asperitas bimaensis cochlostyloides (M.M. Schepman, 1892) - (DYAKIIDAE)
- cochlostyloides, Limacina cochlostyloides J.J. Tesch, 1907 - (LIMACINIDAE)
- cochlostyloides viridis, Elaphroconcha cochlostyloides viridis M.M. Schepman, 1892 - syn of: Asperitas bimaensis cochlostyloides viridis (M.M. Schepman, 1892) - (ARIOPHANTIDAE)
- cochlostyloides viridis, Asperitas bimaensis cochlostyloides viridis (M.M. Schepman, 1892) - (DYAKIIDAE)
- Cochlostylus, syn of: Genus Helicostyla A.E.J. Férussac, 1821 (BRADYBAENIDAE)
- cochlus, Turbo cochlus J.F. Gmelin, 1791 - syn of: Turbo marmoratus C. Linnaeus, 1758 - (TURBINIDAE)
- cochranei, Cyclophorus cochranei H.H. Godwin-Austen, 1889 - (CYCLOPHORIDAE)
- cockae, Paracuneus cockae R.N. Kilburn, 1977 - syn of: Inkinga cockae (R.N. Kilburn, 1977) - (DRILLIIDAE)
- cockae, Inkinga cockae (R.N. Kilburn, 1977) - (HORAICLAVIDAE)
- cockburnensins, Ringicula cockburnensins Zinsmeister & J.D. Stilwell, 1990 † - (RINGICULIDAE) (FOSSIL)
- cockburnensis, Mesodontrachia cockburnensis G.A. Solem, 1988 - (CAMAENIDAE)
- cockburnensis, Nassarius cockburnensis H.H. Kool & H. Dekker, 2006 - (NASSARIIDAE)
- cockburnensis, Adamussium cockburnensis H.A. Jonkers, 2003 † - (PECTINIDAE) (FOSSIL)
- cockburnensis, Tellina cockburnensis G.W. Kendrick & A. Brearley, 1984 - (TELLINIDAE)
- cockburni, Gyraulus cockburni H.H. Godwin-Austen, 1883 - (PLANORBIDAE)
- Cockburnia, Genus Cockburnia Zinsmeister , 1984 † (VENERIDAE) (FOSSIL)
- cockerelli, Anadenulus cockerelli H. Hemphill, 1890 - (ANADENIDAE)
- cockerelli, Edouardia cockerelli (H.A. Pilsbry, 1933) - (CERASTUIDAE)
- cockerelli, Carminodoris cockerelli (J.J. Risbec, 1930) - (DISCODORIDIDAE)
- cockerelli, Hoplodoris cockerelli (J.J. Risbec, 1930) - syn of: Carminodoris cockerelli (J.J. Risbec, 1930) - (DISCODORIDIDAE)
- cockerelli, Ochthephila cockerelli E. de A. Noronha, 1923 - syn of: Discula testudinalis cockerelli (E. de A. Noronha, 1923) - (HYGROMIIDAE)
- cockerelli, Discula testudinalis cockerelli (E. de A. Noronha, 1923) - (HYGROMIIDAE)
- cockerelli, Sphaerogalba bulimoides cockerelli (H.A. Pilsbry & J.H. Ferriss, 1906) - (LYMNAEIDAE)
- cockerelli, Limacia cockerelli (F.M. MacFarland, 1905) - (POLYCERIDAE)
- cockerelli, Ashmunella cockerelli H.A. Pilsbry & J.H. Ferriss, 1917 - (POLYGYRIDAE)
- cockerelli, Holospira cockerelli W.H. Dall, 1897 - (UROCOPTIDAE)
- cockerelli, Bukobia cockerelli H.A. Pilsbry, 1919 - (UROCYCLIDAE)
- cockerianus, Bostryx cockerianus W.H. Dall, 1909 - syn of: Bostryx cokerianus (W.H. Dall, 1909) - (BULIMULIDAE)
- cocklea, Carelia cocklea J.T. Gulick - syn of: Carelia turricula (J.W. Mighels, 1845) - (AMASTRIDAE)
- Cockriggia, Genus Cockriggia Lamont, 1978 † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- cockroadensis, Mollistephanus cockroadensis Chandler & Dietze, 2004 † - (STEPHANOCERATIDAE) (FOSSIL)
- cocksi, Limapontia cocksi J. Alder & A. Hancock, 1848 - syn of: Limapontia senestra (J.L.A. Quatrefages, 1844) - (LIMAPONTIIDAE)
- cocleana, Sconsia cocleana A.A. Olsson, 1922 † - (CASSIDAE) (FOSSIL)
- cocleana, Natica youngi cocleana A.A. Olsson, 1922 - (NATICIDAE)
- cocoa, Stenogyropsis cocoa Páll-Gergely & Hunyadi, 2017 - (BRADYBAENIDAE)
- cocoa, Monilea cocoa T.A. Okutani, 2001 - (TROCHIDAE)
- cocoachroma, Cuthonella cocoachroma J.D. Williams & T.M. Gosliner, 1979 - (CUTHONELLIDAE)
- cocoanus, Aequipecten cocoanus W.H. Dall, 1898 † - (PECTINIDAE) (FOSSIL)
- cocodilensis, Cymatophos cocodilensis (F. Hodson, 1831 †) - (NASSARIIDAE) (FOSSIL)
- cocoditana, Cymia cocoditana F. Hodson, 1931 † - (MURICIDAE) (FOSSIL)
- cocoditana, Turritella cocoditana F. Hodson, 1926 † - (TURRITELLIDAE) (FOSSIL)
- cocoduensis, Unio cocoduensis L.A. Reeve, 1865 - syn of: Ligumia subrostrata (T. Say, 1831) - (UNIONIDAE)
- cocoense, Caecum cocoense J.A. Sibaja-Cordero, K. García-Méndez & J.S. Troncoso, 2013 - (CAECIDAE)
- cocoensis, Borsonia cocoensis A.A. Olsson, 1922 † - (BORSONIIDAE) (FOSSIL)
- cocolitoris, Teinostoma cocolitoris H.A. Pilsbry & J.T.L. McGinty, 1945 - (TORNIDAE)
- Cocopupa, Subgenus Nesopupa (Cocopupa) H.A. Pilsbry & C.M. Cooke, 1920 (VERTIGINIDAE)
- cocoradiata, Haliotis cocoradiata L.A. Reeve, 1846 - syn of: Haliotis coccoradiata L.A. Reeve, 1846 - (HALIOTIDAE)
- Cocosconus, Subgenus Habroconus (Cocosconus) F.C. Baker, 1941 (EUCONULIDAE)
- cocosensis, Favartia cocosensis B.W. Myers & D'Attilio, 1990 - (MURICIDAE)
- cocosensis, Metaphos cocosensis (W.H. Dall, 1896) - (NASSARIIDAE)
- cocosensis, Olivella cocosensis A.A. Olsson, 1956 - (OLIVELLIDAE)
- cocosensis, Leopecten cocosensis T.R. Waller, 2007 - (PECTINIDAE)
- cocosensis, Cyclopecten cocosensis W.H. Dall, 1908 - (PROPEAMUSSIIDAE)
- cocosensis, Cocopupa cocosensis (W.H. Dall, 1900) - (VERTIGINIDAE)
- cocosina, Drillia cocosina A.A. Olsson, 1922 † - (DRILLIIDAE) (FOSSIL)
- Cocoslens, syn of: Subgenus Habroconus (Coccoslens) F.C. Baker, 1941 (EUCONULIDAE)
- coctilis, Cancellaria coctilis L.A. Reeve, 1856 - (CANCELLARIIDAE)
- coctor, Xymene coctor J. Marwick, 1948 † - (MURICIDAE) (FOSSIL)
- Codackia, syn of: Genus Codakia J.A. Scopoli, 1777 (LUCINIDAE)
- Codakia, Genus Codakia J.A. Scopoli, 1777 (LUCINIDAE)
- Codalucina, Subgenus Claibornites (Codalucina) C.C. Stewart, 1930 † (LUCINIDAE) (FOSSIL)
- codazziana, Dufrenoyia codazziana (D.L.G. Karsten, 1886 †) - (DESHAYESITIDAE) (FOSSIL)
- Codazziceras, Genus Codazziceras Etayo Serna, 1979 † (ACANTHOCERATIDAE) (FOSSIL)
- codazzii, Euclia codazzii F.M. Anderson, 1929 † - (CANCELLARIIDAE) (FOSSIL)
- coddi, Trophon coddi F.W. Harmer, 1918 - syn of: Boreotrophon clathratus (C. Linnaeus, 1767) - (MURICIDAE)
- codercola, Euvola codercola G.F. Harris, 1927 † - (PECTINIDAE) (FOSSIL)
- coderensis, Pecten coderensis G.F. Harris, 1927 † - (PECTINIDAE) (FOSSIL)
- codia, Bithynia codia J.R. Bourguignat, 1862 - syn of: Mysorella curta (Garnier in Y.L. Picard, 1840) - (BITHYNIIDAE)
- codia, Candidula codia (J.R. Bourguignat, 1859) - (HYGROMIIDAE)
- codia, Vertigo codia J.R. Bourguignat, 1864 - syn of: Vertigo moulinsiana (D. Dupuy, 1849) - (VERTIGINIDAE)
- Codiella, Genus Codiella T.A. de M. Monterosato in É.A.A. Locard, 1884 (BITHYNIIDAE)
- codiella, Holandriana codiella (G. Servain, 1884) - (PLEUROCERIDAE)
- codiella, Melanella codiella G. Servain, 1884 - syn of: Holandriana codiella (G. Servain, 1884) - (PLEUROCERIDAE)
- Codinella, Genus Codinella Kittl , 1899 † (STUORELLIDAE) (FOSSIL)
- codocedae, Diodora codocedae J.H. McLean & B.G. Andrade, 1982 - (FISSURELLIDAE)
- codoceoae, Heliacus codoceoae H.A. Rehder, 1980 - syn of: Heliacus implexus (J.W. Mighels, 1845) - (ARCHITECTONICIDAE)
- codoceoae, Caecum codoceoae Gálvez & Huidobro, 2017 - (CAECIDAE)
- Codoceras, Genus Codoceras Hyatt, 1900 † (POLYELASMOCERATIDAE) (FOSSIL)
- Codokia, syn of: Genus Codakia J.A. Scopoli, 1777 (LUCINIDAE)
- codomorphus, Viviparus codomorphus J.H. Hartman, 2015 - (VIVIPARIDAE)
- codonensis, Calocochlia codonensis J.G. Hidalgo, 1888 - (BRADYBAENIDAE)
- CODONOCHEILIDAE S.A. Miller, 1889 † - Family (GASTROPODA-EOGASTROPODA [Subclass]-EUOMPHALINA [Order]) (FOSSIL)
- Codonocheilus, Genus Codonocheilus Whiteaves, 1884 † (CODONOCHEILIDAE) (FOSSIL)
- Codonochilus, syn of: Genus Codonocheilus Whiteaves, 1884 † (CODONOCHEILIDAE) (FOSSIL)
- Codonoconus, Genus Codonoconus Chen Yiyuan & Chang Shushen, 1980 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- codopsis, Candidula codopsis G. Servain, 1880 - syn of: Candidula codia (J.R. Bourguignat, 1859) - (HYGROMIIDAE)
- codopsis, Anodonta codopsis G. Servain, 1882 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- codreanni, Grossuana codreanni (A.V. Grossu, 1946) - (HYDROBIIDAE)
- codringtoni, Codringtonia codringtoni (J.E. Gray, 1834) - (HELICIDAE)
- Codringtonia, Genus Codringtonia W. Kobelt, 1898 (HELICIDAE)
- Codruites, Genus Codruites Gradinaru, 2005 † (TIBETITIDAE) (FOSSIL)
- codyensis, Baculites codyensis Reeside, 1927 † - (BACULITIDAE) (FOSSIL)
- coeca, Erosaria coeca P.F. Röding, 1798 - syn of: Erosaria poraria (C. Linnaeus, 1758) - (CYPRAEIDAE)
- coeca, Oncis coeca H.P. Plate, 1893 - syn of: Platevindex amboinae (H.P. Plate, 1893) - (ONCHIDIIDAE)
- Coecella, Genus Coecella J.E. Gray, 1853 (MESODESMATIDAE)
- coefiensis, Cerastoderma glaucum coefiensis H.R. Kaltenbach, 1943 - (CARDIIDAE)
- coefiensis cyrenaica, Cerastoderma coefiensis cyrenaica H.R. Kaltenbach, 1949 - syn of: Cerastoderma glaucum (J.G. Bruguière, 1789) - (CARDIIDAE)
- coefiensis heilmeieri, Cerastoderma coefiensis heilmeieri H.R. Kaltenbach, 1949 - syn of: Cerastoderma glaucum (J.G. Bruguière, 1789) - (CARDIIDAE)
- coei, Metasibirites coei Smith, 1927 † - (METASIBIRITIDAE) (FOSSIL)
- coela, Darellia coela (Buckman) † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- coela, Reynesia coela Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- Coelacanthia, Genus Coelacanthia Andrusov, 1890 † (HYDROBIIDAE) (FOSSIL)
- Coelastarte, Subgenus Astarte (Coelastarte) Boehm, 1893 † (ASTARTIDAE) (FOSSIL)
- coelata, Eatonina coelata T.A. de M. Monterosato, 1884 - syn of: Eatonina fulgida (J. Adams, 1797) - (CINGULOPSIDAE)
- coelata, Scobinella coelata T.A. Conrad, 1848 † - (CLATHURELLIDAE) (FOSSIL)
- coelata, Clavatula coelata R.B. Hinds, 1843 - syn of: Crassispira coelata (R.B. Hinds, 1843) - (CLAVATULIDAE)
- coelata, Ellobium coelata J.B. Hombron & C.H. Jacquinot, 1848 - (ELLOBIIDAE)
- coelata, Helminthoglypta coelata P. Bartsch, 1916 - (HELMINTHOGLYPTIDAE)
- coelata, Micromelania coelata Š. Brusina, 1874 † - (HYDROBIIDAE) (FOSSIL)
- coelata, Trochulus coelata S.E. Studer, 1820 - syn of: Trichia hispida (C. Linnaeus, 1758) - (HYGROMIIDAE)
- coelata, Liotia coelata C.B. Adams - (LIOTIIDAE)
- coelata, Volvarina coelata T.A. de M. Monterosato, 1877 - syn of: Gibberula recondita (T.A. de M. Monterosato, 1884) - (MARGINELLIDAE)
- coelata, Hadriania coelata (F. Dujardin, 1837 †) - (MURICIDAE) (FOSSIL)
- coelata, Nuculana coelata T.A. Conrad, 1833 † - (NUCULANIDAE) (FOSSIL)
- coelata, Crassispira coelata (R.B. Hinds, 1843) - (PSEUDOMELATOMIDAE)
- coelata, Cylichnina coelata (G.P. Deshayes, 1862 †) - (RETUSIDAE) (FOSSIL)
- coelata, Tawera coelata (K.T. Menke, 1843) - (VENERIDAE)
- coelata, Venus coelata K.T. Menke, 1843 - syn of: Tawera coelata (K.T. Menke, 1843) - (VENERIDAE)
- coelata, Paphia coelata J.R. le B. Tomlin, 1923 - syn of: Paphia rotundata (C. Linnaeus, 1758) - (VENERIDAE)
- coelatella, Nuculana coelatella † - (NUCULANIDAE) (FOSSIL)
- coelatina, Trochulus coelatina É.A.A. Locard, 1888 - syn of: Trichia hispida (C. Linnaeus, 1758) - (HYGROMIIDAE)
- Coelatura, syn of: Genus Plegma G.P.L.K. Gude, 1911 (HELICARIONIDAE)
- Coelatura, Genus Coelatura T.A. Conrad, 1853 (UNIONIDAE)
- coelatus, Fusinus coelatus L.A. Reeve, 1847 - syn of: Fusinus rostratus (A.G. Olivi, 1792) - (FASCIOLARIIDAE)
- coelaxis, Ventridens coelaxis H.A. Pilsbry, 1899 - (GASTRODONTIDAE)
- Coelaxis, syn of: Genus Coeliaxis A. Adams & G.F. Angas, 1865 (SUBULINIDAE)
- coelebs, Conus coelebs R.B. Hinds, 1843 - syn of: Virgiconus terebra (I. von Born, 1778) - (CONIDAE)
- coelebs, Triphora coelebs R.B. Hinds, 1843 - (TRIPHORIDAE)
- Coelestele, syn of: Genus Coilostele W.H. Benson, 1864 (FERUSSACIIDAE)
- coelestini, Diaphanomormus coelestini (F. Haas, 1952) - (BULIMULIDAE)
- coelestini obesus, Diaphanomormus coelestini obesus W.K. Weyrauch, 1964. - (BULIMULIDAE)
- coelestis, Hypselodoris coelestis G.P. Deshayes in A. Frédol, 1865 - syn of: Felimare orsinii (J.B. Vérany, 1846) - (CHROMODORIDIDAE)
- coelestis, Glossodoris coelestis G.P. Deshayes in A. Frédol, 1865 - syn of: Felimare orsinii (J.B. Vérany, 1846) - (CHROMODORIDIDAE)
- coelestis, Platydoris coelestis E.F. Kelaart, 1858 - syn of: Platydoris scabra (G.L.C.F.D. Cuvier, 1804) - (DISCODORIDIDAE)
- coelestis, Goniodoris coelestis G.P. Deshayes in A. Frédol, 1865 - syn of: Felimare orsinii (J.B. Vérany, 1846) - (GONIODORIDIDAE)
- coelestis, Iridina coelestis I. Lea, 1838 - syn of: Mutela rostrata (P.C.A.S.L. Rang, 1835) - (IRIDINIDAE)
- coelestis, Phyllidia coelestis L.S.R. Bergh, 1905 - (PHYLLIDIIDAE)
- coelhoi, Bostryx coelhoi A.S.H. Breure, 1978 - (BULIMULIDAE)
- Coeliaxis, Genus Coeliaxis A. Adams & G.F. Angas, 1865 (SUBULINIDAE)
- Coelidium, syn of: Genus Coelocaulus Oehlert & Oehlert 1888 † (MURCHISONIIDAE) (FOSSIL)
- coelinae, Virgiconus coelinae (J.C.H. Crosse, 1858) - (CONIDAE)
- coelinae spiceri, Conus coelinae spiceri P. Bartsch & H.A. Rehder, 1943 - syn of: Virgiconus spiceri (P. Bartsch & H.A. Rehder, 1943) - (CONIDAE)
- Coelobolma, Genus Coelobolma Cossmann, 1918 † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Coelocaeulus, syn of: Genus Coelocaulus Oehlert & Oehlert 1888 † (MURCHISONIIDAE) (FOSSIL)
- Coelocaulus, Genus Coelocaulus Oehlert & Oehlert 1888 † (MURCHISONIIDAE) (FOSSIL)
- Coeloceltites, Genus Coeloceltites Spath, 1951 † (CERATITIDA (UNASSIGNED)) (FOSSIL)
- coelocentrum, Buliminus coelocentrum C.M.F. Ancey, 1893 - syn of: Subzebrinus coelocentrus austenianus (C.M.F. Ancey, 1893) - (ENIDAE)
- Coelocentrum, Genus Coelocentrum J.C.H. Crosse & P. Fischer, 1872 (UROCOPTIDAE)
- coelocentrus, Subzebrinus coelocentrus (C.M.F. Ancey, 1893) - (ENIDAE)
- Coelocentrus, syn of: Genus Maclurites Le Sueur, 1818 † (MACLURITIDAE) (FOSSIL)
- coelocentrus austenianus, Subzebrinus coelocentrus austenianus (C.M.F. Ancey, 1893) - (ENIDAE)
- coelocentrus minor, Subzebrinus coelocentrus minor (C.M.F. Ancey, 1893) - (ENIDAE)
- coelocentrus subovatus, Subzebrinus coelocentrus subovatus (C.M.F. Ancey, 1893) - (ENIDAE)
- Coeloceras, Genus Coeloceras Sowerby, 1817 † (COELOCERATIDAE) (FOSSIL)
- COELOCERATIDAE Haug, 1910 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-EODEROCERATOIDEA [Superfamily]) (FOSSIL)
- Coelochrysalis, Subgenus Euchrysalis (Coelochrysalis) Kittl, 1894 † (COELOSTYLINIDAE) (FOSSIL)
- Coelocion, Genus Coelocion H.A. Pilsbry, 1904 (COELOCIONTIDAE)
- COELOCIONTIDAE Iredale, 1937 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-ORTHALICOIDEA [Superfamily])
- coeloconoidea, Ectomaria callahanensis coeloconoidea (Rohr, 1980 †) - (LOPHOSPIRIDAE) (FOSSIL)
- Coeloconulus, Genus Coeloconulus Nützel & Nakazawa, 2012 † (TROCHIDAE) (FOSSIL)
- coeloconus, Micraulax coeloconus (W.H. Benson, 1851) - (CYCLOPHORIDAE)
- Coelocyclus, Genus Coelocyclus Perner, 1903 † (BELLEROPHONTIDAE) (FOSSIL)
- Coelocyprina, Genus Coelocyprina Douvillé, 1921 † (ARCTICIDAE) (FOSSIL)
- Coelocyrtoceras, Genus Coelocyrtoceras Foerste, 1926 † (POLYELASMOCERATIDAE) (FOSSIL)
- Coeloderoceras, syn of: Genus Villania Till , 1909 † (PHRICODOCERATIDAE) (FOSSIL)
- COELODISCIDAE Gründel & Nützel, 2013 † - Family (GASTROPODA-CAENOGASTROPODA [Subclass]) (FOSSIL)
- Coelodiscus, Genus Coelodiscus Broesamlen, 1909 † (COELODISCIDAE) (FOSSIL)
- Coelodon, syn of: Subgenus Pandora (Frenamya) T. Iredale, 1930 (PANDORIDAE)
- Coelogasteroceras, Genus Coelogasteroceras Hyatt, 1893 † (LIROCERATIDAE) (FOSSIL)
- Coelogonia, syn of: Genus Dreissena P.J. Van Beneden, 1835 (DREISSENIDAE)
- Coelomactra, Subgenus Mactra (Coelomactra) W.H. Dall, 1895 (MACTRIDAE)
- coelomphala, Trichia coelomphala É.A.A. Locard, 1888 - (HYGROMIIDAE)
- coelonotus, Discohoplites coelonotus (Seeley) † - (HOPLITIDAE) (FOSSIL)
- Coelopis, Subgenus Opis (Coelopis) Munier-Chalmas, 1887 † (ASTARTIDAE) (FOSSIL)
- Coelopoma, syn of: Genus Spirostoma P.M. Heude, 1885 (CYCLOPHORIDAE)
- coeloprocta, Lucina coeloprocta A.E.M. Cossmann, 1887 † - (LUCINIDAE) (FOSSIL)
- coeloraphe, Pleurotomella coeloraphe (P. Dautzenberg & H. Fischer, 1896) - syn of: Pleurotomella coelorhaphe (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- coelorhaphe, Pleurotomella coelorhaphe (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- coelorhaphe, Tonkinia mirabilis coelorhaphe O.F. von Möllendorff, 1906 - (STREPTAXIDAE)
- coelorhaphe, Pleurotoma coelorhaphe P. Dautzenberg & H. Fischer, 1896 - syn of: Pleurotomella coelorhaphe (P. Dautzenberg & H. Fischer, 1896) - (TURRIDAE)
- Coelorus, Subgenus Aegista (Coelorus) H.A. Pilsbry, 1900 (BRADYBAENIDAE)
- Coeloscapha, Genus Coeloscapha MacNeil in MacNeil & Dockery, 1984 † (CEPHALASPIDA (UNASSIGNED)) (FOSSIL)
- Coelospira, syn of: Genus Averellia C.M.F. Ancey, 1887 (XANTHONYCHIDAE)
- Coelostele, syn of: Genus Coilostele W.H. Benson, 1864 (FERUSSACIIDAE)
- Coelostemma, Genus Coelostemma W.H. Dall, 1895 (UROCOPTIDAE)
- Coelostrobilops, Subgenus Strobilops (Coelostrobilops) H.A. Pilsbry, 1931 (STROBILOPSIDAE)
- Coelostylina, Genus Coelostylina Kittl, 1894 † (COELOSTYLINIDAE) (FOSSIL)
- COELOSTYLINIDAE Cossmann, 1908 † - Family (GASTROPODA-CAENOGASTROPODA [Subclass]) (FOSSIL)
- Coeloteredo, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- Coeloteuthis, Genus Coeloteuthis Lissajous, 1906 † (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- Coelotrochus, Genus Coelotrochus P. Fischer in L.C. Kiener & P. Fischer, 1880 (TROCHIDAE)
- Coelozone, Genus Coelozone Perner , 1907 † (GOSSELETINIDAE) (FOSSIL)
- coemansi, Turritella coemansi Briart & Cornet, 1887 † - (TURRITELLIDAE) (FOSSIL)
- Coemansia, Genus Coemansia Briart & Cornet, 1873 † (OPISTHOBRANCHIA (UNASSIGNED)) (FOSSIL)
- coena, Eulimella coena W.H. Webster, 1905 - (PYRAMIDELLIDAE)
- Coenaculum, Genus Coenaculum T. Iredale, 1924 (TOFANELLIDAE)
- Coenatoria, syn of: Genus Helix C. Linnaeus, 1758 (HELICIDAE)
- coenda, Facelina coenda Er. Marcus, 1958 - (FACELINIDAE)
- coeni, Paludinella coeni G.S. Coen, 1937 - syn of: Paludinella littorea (E. Forbes & S.C.T. Hanley, 1856) - (ASSIMINEIDAE)
- coeni, Karnekampia sulcata coeni (F. Nordsieck, 1969) - (PECTINIDAE)
- coeni, Turbonilla coeni H.B. Preston, 1905 - (PYRAMIDELLIDAE)
- coeni, Pyrgulina coeni G.S. Coen, 1933 - syn of: Spiralinella incerta (K.O. Milaschewitsch, 1916) - (PYRAMIDELLIDAE)
- coeni, Gibbula coeni H.B. Preston, 1908 - (TROCHIDAE)
- Coenobita, syn of: Subgenus Helicostyla (Helicobulinus) W.J. Broderip, 1841 (BRADYBAENIDAE)
- coenobitus, Musculus coenobitus (L.L. Vaillant, 1865) - (MYTILIDAE)
- coenobitus, Mytilus coenobitus L.L. Vaillant, 1865 - syn of: Musculus coenobitus (L.L. Vaillant, 1865) - (MYTILIDAE)
- coenobium, Amalda coenobium T. Ninomiya, 1991 - (ANCILLARIIDAE)
- Coenocharopa, Genus Coenocharopa J. Stanisic, 1990 (CHAROPIDAE)
- coenopictus, Pupoides coenopictus (F.W. Hutton, 1834) - (PUPILLIDAE)
- coensis, Narona coensis W.C. Mansfield, 1930 † - (CANCELLARIIDAE) (FOSSIL)
- coensis, Polinices coensis (W.H. Dall, 1903 †) - (NATICIDAE) (FOSSIL)
- coensis, Polinices coensis W.C. Mansfield, 1930 † - (NATICIDAE) (FOSSIL)
- coensis, Dallitesta coensis W.H. Dall, 1903 † - syn of: Polinices coensis (W.H. Dall, 1903 †) - (NATICIDAE) (FOSSIL)
- coensis, Olivella coensis W.C. Mansfield, 1930 - (OLIVELLIDAE)
- coepta, Helix coepta C.M.D.E. Legrand, 1871 - syn of: Stenacapha hamiltoni (J.C. Cox, 1868) - (HELICIDAE)
- coercita, Cocculinella coercita (C. Hedley, 1907) - (COCCULINELLIDAE)
- coercita, Sagamilepeta coercita C. Hedley, 1907 - syn of: Cocculinella coercita (C. Hedley, 1907) - (LEPETIDAE)
- coerulans, Vidovicia coerulans (C. Pfeiffer, 1828) - (HELICIDAE)
- coerulans, Bielzia coerulans (E.A. Bielz, 1851) - (LIMACIDAE)
- coerulans, Poecilocoptis coerulans (F. Poey, 1864) - (UROCOPTIDAE)
- coerulea, Albinaria coerulea E.A. Rossmässler, 1835 - syn of: Albinaria caerulea (G.P. Deshayes, 1835) - (CLAUSILIIDAE)
- coerulea, Doris coerulea A. Risso, 1818 - syn of: Felimare villafranca (A. Risso, 1818) - (DORIDIDAE)
- coerulea, Drillia coerulea H.C. Weinkauff, 1875 - syn of: Clavatula caerulea (H.C. Weinkauff in H.C. Weinkauff & W. Kobelt, 1875) - (DRILLIIDAE)
- coerulea, Fasciolaria coerulea G. Perry, 1811 - syn of: Fasciolaria tulipa (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- coerulea, Hermaea coerulea S. Trinchese, 1892 - syn of: Ercolania coerulea (S. Trinchese, 1892) - (HERMAEIDAE)
- coerulea, Ercolania coerulea (S. Trinchese, 1892) - (LIMAPONTIIDAE)
- coerulea, Limapontia coerulea J.L.A. Quatrefages, 1844 - syn of: Limapontia capitata (O.F. Müller, 1774) - (LIMAPONTIIDAE)
- coerulea, Thuridilla coerulea (E.F. Kelaart, 1857) - (PLAKOBRANCHIDAE)
- coerulea, Turbinella coerulea G. Perry, 1811 - syn of: Turbinella pyrum (C. Linnaeus, 1767) - (TURBINELLIDAE)
- coerulea, Dosinia coerulea L.A. Reeve, 1850 - syn of: Dosinia caerulea L.A. Reeve, 1850 - (VENERIDAE)
- coeruleata, Chromodoris coeruleata (W. Stimpson, 1855) - (CHROMODORIDIDAE)
- coeruleata, Janthina coeruleata L.A. Reeve, 1858 - syn of: Janthina janthina (C. Linnaeus, 1758) - (JANTHINIDAE)
- coeruleata, Patella coeruleata E.M. Da Costa, 1778 - syn of: Patella pellucida C. Linnaeus, 1758 - (PATELLIDAE)
- coerulens, Poecilocoptis coerulens F. Poey, 1874 - syn of: Poecilocoptis coerulescens (F. Poey, 1874) - (UROCOPTIDAE)
- coeruleopictus, Janolus coeruleopictus T.D.A. Cockerell in T.D.A. Cockerell & C.N.E. Eliot, 1905 - syn of: Janolus barbarensis (J.G. Cooper, 1863) - (PROCTONOTIDAE)
- coerulescens, Berghia coerulescens (C.L. Laurillard, 1832) - (AEOLIDIIDAE)
- coerulescens, Austrofusus coerulescens (Finlay, 1930 †) - (BUCCINIDAE) (FOSSIL)
- coerulescens, Aulacofusus coerulescens J.T. Kuroda & T. Habe in T. Habe, 1961 - (BUCCINIDAE)
- coerulescens, Bostryx coerulescens L. Pfeiffer, 1858 - (BULIMULIDAE)
- coerulescens, Photinula coerulescens (P.P. King & W.J. Broderip, 1832) - (CALLIOSTOMATIDAE)
- coerulescens, Montenegrina tomorosi coerulescens H. Nordsieck, 1996 - (CLAUSILIIDAE)
- coerulescens, Conus coerulescens J.S. Schröter, 1803 - syn of: Chelyconus ermineus (I. von Born, 1778) - (CONIDAE)
- coerulescens, Erronea coerulescens J.S. Schröter, 1804 - syn of: Erronea errones (C. Linnaeus, 1758) - (CYPRAEIDAE)
- coerulescens, Montereina coerulescens (L.S.R. Bergh, 1888) - (DISCODORIDIDAE)
- coerulescens, Pinctada coerulescens P.P. King & W.J. Broderip, 1832 - syn of: Photinula coerulescens (P.P. King & W.J. Broderip, 1832) - (PTERIIDAE)
- coerulescens, Trochus coerulescens J.B.P.A. Lamarck, 1822 - (TROCHIDAE)
- coerulescens, Poecilocoptis coerulescens (F. Poey, 1874) - (UROCOPTIDAE)
- coerulescens, Sunetta coerulescens J.H.F. Link, 1807 - syn of: Circe scripta (C. Linnaeus, 1758) - (VENERIDAE)
- coerulescens, Forcartulus coerulescens (C.G. Semper, 1885) - (VERONICELLIDAE)
- coerulescens columna, Bostryx coerulescens columna H.A. Pilsbry, 1898 - (BULIMULIDAE)
- coerulescens variegata, Montereina coerulescens variegata (C.N.E. Eliot, 1903) - (DISCODORIDIDAE)
- coerulescentes, Octopus coerulescentes Fra Piero, 1895 - syn of: Octopus vulgaris G.L.C.F.D. Cuvier, 1797 - (OCTOPODIDAE)
- coeruleum, Prophysaon coeruleum T.D.A. Cockerell, 1890 - (ANADENIDAE)
- coesfeldiense, Hoplitoplacenticeras coesfeldiense (Schluter, 1867 †) - (PLACENTICERATIDAE) (FOSSIL)
- coesus, Pedicamista coesus (C.M.D.E. Legrand, 1871) - (PUNCTIDAE)
- coetivensis, Triphora coetivensis J.C. Melvill, 1909 - syn of: Triphora coetiviensis J.C. Melvill, 1909 - (TRIPHORIDAE)
- coetiviensis, Triphora coetiviensis J.C. Melvill, 1909 - (TRIPHORIDAE)
- cofacorys, Jaspidella cofacorys (J. Gardner, 1937 †) - (OLIVIDAE) (FOSSIL)
- coffea, Anchura coffea D.T. Dockery, 1993 † - (APORRHAIDAE) (FOSSIL)
- coffea, Granosolarium coffea N.F. Sohl, 1964 † - (ARCHITECTONICIDAE) (FOSSIL)
- coffea, Tomopleura coffea (K.H.J. Thiele, 1925) - (BORSONIIDAE)
- coffea, Bulla coffea C. Linnaeus, 1758 - syn of: Melampus coffea (C. Linnaeus, 1758) - (BULLIDAE)
- coffea, Amplirhagada coffea F. Köhler, 2011 - (CAMAENIDAE)
- coffea, Clathromangelia coffea J.T. Kuroda, T. Habe & K. Oyama, 1971 - (CLATHURELLIDAE)
- coffea, Oospira coffea H. Nordsieck, 2012 - (CLAUSILIIDAE)
- coffea, Bistolida coffea G.B. Sowerby, 1870 - syn of: Bistolida ursellus (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- coffea, Bistolida coffea T. Iredale, 1939 - syn of: Bistolida hirundo rouxi (C.M.F. Ancey, 1882) - (CYPRAEIDAE)
- coffea, Clavus coffea (E.A. Smith, 1882) - (DRILLIIDAE)
- coffea, Melampus coffea (C. Linnaeus, 1758) - (ELLOBIIDAE)
- coffea, Cassidula coffea W. Wood, 1825 - syn of: Cassidula aurisfelis (J.G. Bruguière, 1789) - (ELLOBIIDAE)
- coffea, Aciculiscala coffea D.T. Dockery, 1993 † - (EPITONIIDAE) (FOSSIL)
- coffea, Scurria coffea W.H. Dall, 1909 - syn of: Scurria variabilis (G.B. I Sowerby, 1839) - (LOTTIIDAE)
- coffea, Scurria parasitica coffea (L.A. Reeve, 1830) - (LOTTIIDAE)
- coffea, Mitra coffea G.H. Schubert & J.A. Wagner, 1829 - (MITRIDAE)
- coffea, Oliva coffea P.F. Röding, 1798 - syn of: Oliva carneola (J.F. Gmelin, 1791) - (OLIVIDAE)
- coffea, Patella coffea L.A. Reeve, 1855 - syn of: Scurria variabilis (G.B. I Sowerby, 1839) - (PATELLIDAE)
- coffea, Tarebia coffea R.A. Philippi, 1843 - syn of: Tarebia granifera (J.B.P.A. Lamarck, 1816) - (THIARIDAE)
- coffea, Pleurotoma coffea E.A. Smith, 1882 - syn of: Clavus coffea (E.A. Smith, 1882) - (TURRIDAE)
- coffea, Voluta coffea C. Linnaeus, 1758 - syn of: Melampus coffea (C. Linnaeus, 1758) - (VOLUTIDAE)
- coffeae, Leporiconus coffeae (J.F. Gmelin, 1791) - (CONIDAE)
- coffeebayensis, Murexsul coffeebayensis M. Lussi, 2010 - (MURICIDAE)
- coffeus, Joculator coffeus A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- coffreana, Solaropsis coffreana (S. Moricand, 1841) - (PLEURODONTIDAE)
- coffreana, Happia coffreana (S. Moricand, 1841) - (SCOLODONTIDAE)
- cognata, Achatinella caesia cognata J.T. Gulick, 1858 - (ACHATINELLIDAE)
- cognata, Beneckeia cognata A.J. Wagner, 1891 † - (BENECKEIIDAE) (FOSSIL)
- cognata, Pulsarella cognata (E.A. Smith, 1877) - (BORSONIIDAE)
- cognata, Bruceina cognata (B.A. Marshall, 1988) - (CALLIOSTOMATIDAE)
- cognata, Gloreugenia cognata (G.P.L.K. Gude, 1907) - (CAMAENIDAE)
- cognata, Basedowena cognata G.A. Solem, 1993 - (CAMAENIDAE)
- cognata, Medora agnata cognata (O. Böttger, 1877) - (CLAUSILIIDAE)
- cognata, Cochlicella cognata E.A. Rossmässler, 1837 - syn of: Cochlicella conoidea (J.P.R. Draparnaud, 1801) - (COCHLICELLIDAE)
- cognata, Asuranena cognata (W.A. Lindholm, 1927) - (ENIDAE)
- cognata, Puncturella conica cognata (A.A. Gould, 1852) - (FISSURELLIDAE)
- cognata, Helix cognata A.E.J. Férussac, 1821 - (HELICIDAE)
- cognata, Ruedemannia cognata (J. Perner, 1903 †) - (LOPHOSPIRIDAE) (FOSSIL)
- cognata, Pseudorhaphitoma cognata (K.H.J. Thiele, 1925) - (MANGELIIDAE)
- cognata, Antiguraleus cognata G.B. Pritchard & J.H. Gatliff, 1899 - syn of: Antiguraleus kingensis (W.F. Petterd, 1879) - (MANGELIIDAE)
- cognata, Melanopsis cognata Š. Brusina, 1878 † - (MELANOPSIDAE) (FOSSIL)
- cognata, Dendostrea cognata F.P. Jousseaume, 1888 - syn of: Dendostrea folium (C. Linnaeus, 1758) - (OSTREIDAE)
- cognata, Ostrea cognata F.P. Jousseaume, 1888 - syn of: Dendostrea folium (C. Linnaeus, 1758) - (OSTREIDAE)
- cognata, Thelidomus cognata (A.E.J. Férussac, 1821) - (PLEURODONTIDAE)
- cognata, Pleurotomaria cognata Chapuis & G.J.G. Dewalque, 1853 † - (PLEUROTOMARIIDAE) (FOSSIL)
- cognata, Euglandina cognata (H. Strebel, 1875) - (SPIRAXIDAE)
- cognata, Temnoconcha cognata (Adams, 1852) - (TELLINIDAE)
- cognata, Leporimetis cognata (H.A. Pilsbry & E.G. Vanatta, 1902) - (TELLINIDAE)
- cognata, Florimetis cognata H.A. Pilsbry & E.G. Vanatta, 1902 - syn of: Leporimetis cognata (H.A. Pilsbry & E.G. Vanatta, 1902) - (TELLINIDAE)
- cognata, Apolymetis cognata H.A. Pilsbry & E.G. Vanatta, 1902 - syn of: Leporimetis cognata (H.A. Pilsbry & E.G. Vanatta, 1902) - (TELLINIDAE)
- cognata, Lutricola cognata H.A. Pilsbry & E.G. Vanatta, 1902 - syn of: Leporimetis cognata (H.A. Pilsbry & E.G. Vanatta, 1902) - (TELLINIDAE)
- cognata, Terebra cognata E.A. Smith, 1877 - (TEREBRIDAE)
- cognata, Pleurotoma cognata E.A. Smith, 1877 - syn of: Pulsarella cognata (E.A. Smith, 1877) - (TURRIDAE)
- cognata, Truncilla cognata I. Lea, 1860 - (UNIONIDAE)
- cognata, Anodon cognata A.A. Gould, 1850 - syn of: Anodonta oregonensis I. Lea, 1838 - (UNIONIDAE)
- cognata, Chione cognata G.B. Pritchard, 1903 † - (VENERIDAE) (FOSSIL)
- cognata, Petricolaria cognata (C.B. Adams, 1852) - (VENERIDAE)
- cognata, Teremelon cognata (Finlay, 1926 †) - (VOLUTIDAE) (FOSSIL)
- cognatum, Cardium cognatum Phillips, 1829 † - (CARDIIDAE) (FOSSIL)
- cognatum, Calocyrtoceras cognatum (Barrande, 1865 †) - (PARAPHRAGMITIDAE) (FOSSIL)
- cognatum, Chondropoma cognatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- cognatum, Spirostemma cognatum (H. Vendryes, 1901) - (UROCOPTIDAE)
- cognatus, Sellanarcestes cognatus Chlupac & Turek, 1983 † - (ANARCESTIDAE) (FOSSIL)
- cognatus, Drymaeus cognatus H.A. Pilsbry, 1901 - (BULIMULIDAE)
- cognatus, Amphidromus cognatus H.C. Fulton, 1907 - (CAMAENIDAE)
- cognatus, Leolites cognatus Marek, 1967 † - (PAUXILLITIDAE) (FOSSIL)
- cognatus, Phrixgnathus cognatus H.H. Suter, 1909 - (PUNCTIDAE)
- cognatus, Tectus cognatus Sowerby, 1840 † - (TEGULIDAE) (FOSSIL)
- cognatus, Clanculus cognatus (H.A. Pilsbry, 1903) - (TROCHIDAE)
- cogoensis, Sinistrexcisa cogoensis A.J. de Winter, R. Gomez & C.E. Prieto, 1999 - (STREPTAXIDAE)
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