- coma, Barbatia coma L.A. Reeve, 1844 - syn of: Barbatia cometa (L.A. Reeve, 1844) - (ARCIDAE)
- coma, Charopa coma (J.E. Gray, 1843) - (CHAROPIDAE)
- coma, Marginella coma N.H. Odhner, 1924 - syn of: Peculator porphyria (J.C. Verco, 1896) - (MARGINELLIDAE)
- comacum, Pyrgulina comacum J.C. Melvill, 1910 - (PYRAMIDELLIDAE)
- comaensis, Tortaxis comaensis V.T. Do, 2014 - (SUBULINIDAE)
- comalensis, Neodeshayesites comalensis (A.T. Young, 1974 †) - (DESHAYESITIDAE) (FOSSIL)
- comalensis, Marstonia comalensis (H.A. Pilsbry & J.H. Ferriss, 1906) - (HYDROBIIDAE)
- comalensis, Hypacanthoplites comalensis A.T. Young, 1974 † - syn of: Neodeshayesites comalensis (A.T. Young, 1974 †) - (PARAHOPLITIDAE) (FOSSIL)
- comalensis, Elimia comalensis H.A. Pilsbry, 1890 - (PLEUROCERIDAE)
- comalensis fontinalis, Elimia comalensis fontinalis H.A. Pilsbry & J.H. Ferriss, 1906 - (PLEUROCERIDAE)
- comancheana, Pinna comancheana Cragin, 1894 † - (PINNIDAE) (FOSSIL)
- comancheanus, Gnesioceramus comancheanus (Cragin, 1895 †) - (INOCERAMIDAE) (FOSSIL)
- comarilis, Clanculus comarilis C. Hedley, 1912 - (TROCHIDAE)
- comarmondi, Comarmondia comarmondi A. Michaud, 1829 - syn of: Comarmondia gracilis (G. Montagu, 1803) - (CLATHURELLIDAE)
- comarmondi, Pleurotoma comarmondi A. Michaud, 1829 - syn of: Comarmondia gracilis (G. Montagu, 1803) - (TURRIDAE)
- Comarmondia, Genus Comarmondia T.A. de M. Monterosato, 1884 (CLATHURELLIDAE)
- Comaroceras, Genus Comaroceras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- comasi, Crassispira comasi R. Fernández-Garcés & E. Rolán, 2010 - (PSEUDOMELATOMIDAE)
- comata, Bucanopsis comata (J. Perner, 1903 †) - (BELLEROPHONTIDAE) (FOSSIL)
- comata, Bucania comata J. Perner, 1903 † - syn of: Bucanopsis comata (J. Perner, 1903 †) - (BUCANIIDAE) (FOSSIL)
- comata, Monacha comata B. Hausdorf, 2000 - (HYGROMIIDAE)
- comata, Pleurotomaria comata Lindström, 1884 † - (PLEUROTOMARIIDAE) (FOSSIL)
- comata, Maminka comata Barrande, 1881 † - (STOLIDOTIDAE) (FOSSIL)
- comatosa, Fusiconus comatosa (H.A. Pilsbry, 1904) - (CONIDAE)
- comatosaeformis, Conus comatosaeformis M. Yokoyama, 1928 † - (CONIDAE) (FOSSIL)
- comatotropis, Drilliola comatotropis W.H. Dall, 1881 - syn of: Drilliola loprestiana (P. Calcara, 1841) - (BORSONIIDAE)
- comatotropis, Pleurotoma comatotropis W.H. Dall, 1881 - syn of: Drilliola loprestiana (P. Calcara, 1841) - (TURRIDAE)
- comatula, Euryzone comatula J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- comatulicola, Crinophtheiros comatulicola (L.von Graff, 1875) - (EULIMIDAE)
- comatulicula, Crinophtheiros comatulicula L.von Graff, 1875 - syn of: Crinophtheiros comatulicola (L.von Graff, 1875) - (EULIMIDAE)
- comatus, Pterocyclus comatus (O.F. von Möllendorff, 1897) - (CYCLOPHORIDAE)
- comatus, Hirtudiscus comatus B. Hausdorf, 2003 - (ENDODONTIDAE)
- comatus, Hipponix comatus G.P. Deshayes, 1861 † - (HIPPONICIDAE) (FOSSIL)
- comatus, Pecten comatus A. Valenciennes, 1846 - syn of: Chlamys hastata (G.B. II Sowerby, 1842) - (PECTINIDAE)
- combauti, Habromorula combauti Goret & Pons, 2013 † - (MURICIDAE) (FOSSIL)
- combeana, Amplirhagada combeana T. Iredale, 1938 - (CAMAENIDAE)
- combesi, Jeanrogericeras combesi Sornay, 1951 † - (ACANTHOCERATIDAE) (FOSSIL)
- combieri, Sinupharus combieri (E. Fischer-Piette & M. Nicklés, 1946) - (PHARIDAE)
- combinai, Ornatimormus combinai W.K. Weyrauch, 1958 - (BULIMULIDAE)
- comboides, Streptartemon comboides (A.V.M.D. D'Orbigny, 1837) - (STREPTAXIDAE)
- Comboynea, Genus Comboynea Shea, Colgan & Stanisic, 2012 (CHAROPIDAE)
- comburens, Tropidophora comburens (J.C. Melvill & J.H. Ponsonby, 1903) - (POMATIIDAE)
- comdigera, Lithophaga comdigera D'Orbigny, 1847 - (MYTILIDAE)
- comedusae, Chama comedusae A. Matsukuma, 1996 - syn of: Chama oomedusae A. Matsukuma, 1996 - (CHAMIDAE)
- comendadori, Xeromagna comendadori G. Servain, 1880 - syn of: Xerosecta reboudiana (J.R. Bourguignat, 1863) - (HYGROMIIDAE)
- comense, Phymatoceras comense (Von Buch, 1831 †) - (PHYMATOCERATIDAE) (FOSSIL)
- comense, Furloceras comense (Buch, 1831 †) - (PHYMATOCERATIDAE) (FOSSIL)
- comensis, Cochlodinastra comensis (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- comensis, Neritaria comensis (R. Hoernes, 1856 †) - (NERITARIIDAE) (FOSSIL)
- comensis lucensis, Cochlodinastra comensis lucensis (C. Gentiluomo, 1868) - (CLAUSILIIDAE)
- comensis trilamellata, Cochlodinastra comensis trilamellata (A. Schmidt, 1868) - (CLAUSILIIDAE)
- Comenteroxenos, syn of: Genus Enteroxenos K.E.H. Bonnevie, 1902 (EULIMIDAE)
- comephora, Helicigona comephora (J.R. Bourguignat, 1857) - (HELICIDAE)
- comes, Tornatellides comes H.A. Pilsbry & C.M. Cooke, 1915 - (ACHATINELLIDAE)
- comes, Bulimus comes L. Pfeiffer, 1861 - syn of: Amphidromus comes (L. Pfeiffer, 1861) - (BULIMULIDAE)
- comes, Amphidromus comes (L. Pfeiffer, 1861) - (CAMAENIDAE)
- comes, Cysticopsis comes (F. Poey, 1858) - (CEPOLIDAE)
- comes, Euphaedusa digonoptyx comes (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- comes, Ogasawarana comes (A.J. Wagner, 1909) - (HELICINIDAE)
- comes, Maclurina comes J. Perner, 1903 † - (MACLURITIDAE) (FOSSIL)
- comes, Xymenella comes (P.A. Maxwell, 1992 †) - (MURICIDAE) (FOSSIL)
- comes, Bolloceras comes (Barrande, 1865 †) - (NOTHOCERATIDAE) (FOSSIL)
- comes, Phragmoceras comes Barrande, 1865 † - syn of: Bolloceras comes (Barrande, 1865 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- comes, Pseudotectus comes J. Perner, 1903 † - (PSEUDOPHORIDAE) (FOSSIL)
- comes, Powellisetia comes (Finlay, 1926 †) - (RISSOIDAE) (FOSSIL)
- comes, Valvata comes Hudleston † - (VALVATIDAE) (FOSSIL)
- comes polymorphous, Amphidromus comes polymorphous (C.M. Tapparone-Canefri, 1874) - (CAMAENIDAE)
- cometa, Barbatia cometa (L.A. Reeve, 1844) - (ARCIDAE)
- cometa, Condylocardia cometa P.U. Middelfart, 2002 - (CONDYLOCARDIIDAE)
- cometabilingue, Reticuloceras cometabilingue Bisat & Ramsbottom † - (RETICULOCERATIDAE) (FOSSIL)
- cometense, Chondropoma cometense P. Bartsch, 1946 - syn of: Chondropoma biforme cometense P. Bartsch, 1946 - (POMATIIDAE)
- cometense, Chondropoma biforme cometense P. Bartsch, 1946 - (POMATIIDAE)
- cometes, Styloptygma cometes J.C. Melvill, 1910 - (PYRAMIDELLIDAE)
- comicolense, Ptychopatula comicolense F.C. Baker, 1927 - (VERTIGINIDAE)
- comicula, Mitra comicula (C. Linnaeus, 1758) - (MITRIDAE)
- comideleuca, Lienardia comideleuca (J.C. Melvill & R. Standen, 1903) - (CLATHURELLIDAE)
- comideleuca, Mangelia comideleuca J.C. Melvill & R. Standen, 1903 - syn of: Lienardia comideleuca (J.C. Melvill & R. Standen, 1903) - (MANGELIIDAE)
- Cominella, Genus Cominella J.E. Gray, 1850 (BUCCINIDAE)
- cominella, Cancellaria cominella H.A. Pilsbry & A.A. Olsson, 1941 † - (CANCELLARIIDAE) (FOSSIL)
- cominellaeformis, Anachis cominellaeformis (R. Tate, 1892) - (COLUMBELLIDAE)
- cominelliformis, Anachis cominelliformis R. Tate, 1892 - syn of: Anachis cominellaeformis (R. Tate, 1892) - (COLUMBELLIDAE)
- cominelloides, Fax cominelloides (R. Tate, 1888 †) - (BUCCINIDAE) (FOSSIL)
- Cominicula, Genus Cominicula Kríž, 1974 † (CARDIOLIDAE) (FOSSIL)
- cominicus clarissimus, Drymaeus cominicus clarissimus H.A. Pilsbry, 1946 - syn of: Mesembrinus dominicus clarissimus H.A. Pilsbry, 1946 - (BULIMULIDAE)
- Cominista, syn of: Subgenus Cominella (Josepha) J.E. Tenison-Woods, 1878 (BUCCINIDAE)
- Cominula, syn of: Genus Cominella J.E. Gray, 1850 (BUCCINIDAE)
- comis, Drymaeus comis H.B. Preston, 1907 - (BULIMULIDAE)
- comis, Divaricella comis A.A. Olsson, 1964 † - (LUCINIDAE) (FOSSIL)
- comis, Janolus comis Er. Marcus, 1955 - (PROCTONOTIDAE)
- comistea, Seminella comistea (J.C. Melvill, 1906) - (COLUMBELLIDAE)
- comistea, Columbella comistea J.C. Melvill, 1906 - syn of: Seminella comistea (J.C. Melvill, 1906) - (COLUMBELLIDAE)
- comita, Nuculana comita (B.C. Cotton & F.C. Godfrey, 1938) - (NUCULANIDAE)
- comitas, Belomitra comitas Y.I. Kantor, N. Puillandre, A. Rivasseau & P. Bouchet, 2012 - (BELOMITRIDAE)
- Comitas, Genus Comitas H.J. Finlay, 1926 (PSEUDOMELATOMIDAE)
- comitas, Turbonilla comitas C.R. Laws, 1937 † - (PYRAMIDELLIDAE) (FOSSIL)
- Comitileda, Genus Comitileda Iredale, 1924 † (NUCULANIDAE) (FOSSIL)
- Comitileda, syn of: Genus Ledella A.E. Verrill & K.J. Bush, 1897 (NUCULANIDAE)
- comleyensis, Helcionella subrugosa comleyensis Cobbold † - (HELCIONELLIDAE) (FOSSIL)
- comleyensis, Ilsanella comleyensis Cobbold, 1921 † - syn of: Ilsanella oblonga (Cobbold, 1921 †) - (SCENELLIDAE) (FOSSIL)
- comma, Ataphrus comma (J. Lycett, 1863 †) - (ATAPHRIDAE) (FOSSIL)
- comma, Crenipecten comma (Whidborne, 1889 †) - (AVICULOPECTINIDAE) (FOSSIL)
- comma, Cadoceras comma Imlay, 1953 † - (CADOCERATIDAE) (FOSSIL)
- comma, Warrana comma (J.C. Verco, 1908) - (CONDYLOCARDIIDAE)
- comma, Cuna comma (J.C. Verco, 1908) - syn of: Warrana comma (J.C. Verco, 1908) - (CONDYLOCARDIIDAE)
- comma, Latouchella comma D. Geyer, 1986 † - syn of: Dorispira comma (D. Geyer, 1986 †) - (COREOSPIRIDAE) (FOSSIL)
- comma, Cypraea comma G. Perry, 1811 - syn of: Cribrarula cribraria comma (G. Perry, 1811) - (CYPRAEIDAE)
- comma, Cribrarula cribraria comma (G. Perry, 1811) - (CYPRAEIDAE)
- comma, Anculosa comma T.A. Conrad, 1834 - (PLEUROCERIDAE)
- comma, Dorispira comma (D. Geyer, 1986 †) - (RUGAECONIDAE) (FOSSIL)
- comma, Guillarmodia comma (F.G. Thompson, 1995) - (SPIRAXIDAE)
- comma, Eopleurotoma comma (F.E. Edwards, 1861 †) - (TURRIDAE) (FOSSIL)
- commaculata, Cinguloterebra commaculata (J.F. Gmelin, 1791) - (TEREBRIDAE)
- commaculata, Terebra commaculata J.F. Gmelin, 1791 - syn of: Cinguloterebra commaculata (J.F. Gmelin, 1791) - (TEREBRIDAE)
- commaculatum, Buccinum commaculatum J.F. Gmelin, 1791 - syn of: Cinguloterebra commaculata (J.F. Gmelin, 1791) - (BUCCINIDAE)
- commagenensis, Schileykula heterostropha commagenensis (E. Neubert, 1988) - (ORCULIDAE)
- commandorensis, Leptochiton commandorensis Sirenko, 2017 - (LEPTOCHITONIDAE)
- commanotata, Argonerita commanotata L.A. Reeve, 1855 - syn of: Nerita aterrima J.F. Gmelin, 1791 - (NERITIDAE)
- commaoides, Cerithium commaoides W.H. Hudleston, 1889 † - (CERITHIIDAE) (FOSSIL)
- commena, Clausilia commena O. von Retowski, 1889 - syn of: Astrogena griseofusca (A. Mousson, 1876) - (CLAUSILIIDAE)
- commensalis, Vitreolina commensalis (R. Tate, 1898) - (EULIMIDAE)
- commensurata, Tylozone commensurata E.G. Linsley, 1968 † - (GOSSELETINIDAE) (FOSSIL)
- commenta, Pleuroxia commenta T. Iredale, 1939 - syn of: Pleuroxia polypleura R. Tate, 1899 - (CAMAENIDAE)
- commentica, Microdrillia commentica (C. Hedley, 1915) - (BORSONIIDAE)
- commercialis, Saccostrea glomerata commercialis (T. Iredale & T.C. Roughley, 1933) - (OSTREIDAE)
- commercialis dactylena, Saccostrea commercialis dactylena T. Iredale, 1939 - syn of: Crassostrea dactylena (T. Iredale, 1939) - (OSTREIDAE)
- commissionis, Pomacea commissionis (H.F.A. von Ihering, 1898) - (AMPULLARIIDAE)
- commixta, Saladelos commixta T. Iredale, 1933 - (RHYTIDIDAE)
- commixtus, Helix commixtus R.T. Lowe, 1854 - (HELICIDAE)
- commixtus, Caseolus commixtus (R.T. Lowe, 1854) - (HYGROMIIDAE)
- commoda, Trishoplita commoda (A. Adams, 1868) - (BRADYBAENIDAE)
- commoda, Siphonalia commoda A. Adams, 1863 - (BUCCINIDAE)
- commoda, Westraltrachia commoda T. Iredale, 1939 - (CAMAENIDAE)
- commoda, Helix commoda T.A. de M. Monterosato, 1892 - syn of: Murella muralis (O.F. Müller, 1774) - (HELICIDAE)
- commoda, Gari commoda (M. Yokoyama, 1925) - (PSAMMOBIIDAE)
- commoda, Turbonilla commoda A. Adams, 1860 - (PYRAMIDELLIDAE)
- commoda, Gulella commoda (E.A. Smith, 1903) - (STREPTAXIDAE)
- commoda, Capulacmaea commoda A.T. von Middendorff, 1851 - syn of: Piliscus commodus (A.T. von Middendorff, 1851) - (VELUTINIDAE)
- commoda endo, Trishoplita commoda endo H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- commoda fusca, Trishoplita commoda fusca G.P.L.K. Gude, 1900 - (BRADYBAENIDAE)
- commoda kyotoensis, Trishoplita commoda kyotoensis H.A. Pilsbry, 1900 - (BRADYBAENIDAE)
- commoda nioyaka, Trishoplita commoda nioyaka H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- commodum, Exochoceras commodum P.A. Zhuravleva, 1972 † - syn of: Chrysoceras tumidum (P.A. Zhuravleva, 1972 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- commodum, Epitonium commodum (E.A. Smith, 1890) - (EPITONIIDAE)
- commodus, Conus commodus A. Adams, 1855 - syn of: Gradiconus philippii (L.C. Kiener, 1847) - (CONIDAE)
- commodus, Piliscus commodus (A.T. von Middendorff, 1851) - (VELUTINIDAE)
- Commonozonispira, Genus Commonozonispira † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- commune, Neomicroceras commune E. Donovan, 1966 † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- commune, Bucardium commune J.K. Megerle Von Mühlfeld, 1811 - syn of: Glossus humanus (C. Linnaeus, 1758) - (CARDIIDAE)
- commune, Coeloceras commune (Sowerby, 1815 †) - (COELOCERATIDAE) (FOSSIL)
- commune, Dactylioceras commune (J. de C. Sowerby, 1815 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- commune, Ophiceras commune (Spath, 1930 †) - (DIENEROCERATIDAE) (FOSSIL)
- commune, Ropaloceras commune P.A. Zhuravleva, 1972 † - syn of: Lysagoroceras subfusiforme (Münster, 1840 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- commune, Epitonium commune J.B.P.A. Lamarck, 1822 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- commune, Glossus commune J.K. Megerle Von Mühlfeld, 1811 - syn of: Glossus humanus (C. Linnaeus, 1758) - (GLOSSIDAE)
- commune, Koinodactylites commune (J. de C. Sowerby) † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- commune annulatum, Epitonium commune annulatum K.O. Milaschewitsch, 1909 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- communis, Acanthochitona communis B. Sabelli & M. Taviani, 1979 - syn of: Acanthochitona fascicularis (C. Linnaeus, 1758) - (ACANTHOCHITONIDAE)
- communis, Acanthochitona communis A. Risso, 1826 - syn of: Acanthochitona fascicularis (C. Linnaeus, 1758) - (ACANTHOCHITONIDAE)
- communis, Euhadra sandai communis H.A. Pilsbry, 1928 - (BRADYBAENIDAE)
- communis, Neptunea communis (A.T. von Middendorff, 1848) - (BUCCINIDAE)
- communis, Onobops communis Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- communis, Astyris communis T.A. Conrad, 1862 † - (COLUMBELLIDAE) (FOSSIL)
- communis, Conus communis W.J. Swainson, 1840 - syn of: Cylinder textile (C. Linnaeus, 1758) - (CONIDAE)
- communis, Salaputium communis (Tate 1896) † - (CRASSATELLIDAE) (FOSSIL)
- communis, Cyamium communis (C. Hedley, 1906) - (CYAMIIDAE)
- communis, Heikea communis Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- communis, Dendrodoris communis J.J. Risbec, 1928 - syn of: Dendrodoris fumata (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (DENDRODORIDIDAE)
- communis, Epitonium communis K.O. Milaschewitsch, 1909 - syn of: Epitonium clathrus annulatus K.O. Milaschewitsch, 1909 - (EPITONIIDAE)
- communis, Epitonium communis J.B.P.A. Lamarck, 1822 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- communis, Eulima communis T.A. Verkrüzen, 1887 - (EULIMIDAE)
- communis, Drilluta communis B. Wade, 1916 † - (FASCIOLARIIDAE) (FOSSIL)
- communis, Ficus communis P.F. Röding, 1798 - syn of: Ficus ficus (C. Linnaeus, 1758) - (FICIDAE)
- communis, Glossus communis H.C.F. Schumacher, 1817 - syn of: Glossus humanus (C. Linnaeus, 1758) - (GLOSSIDAE)
- communis, Bemella communis Parkhaev, 2001 † - (HELCIONELLIDAE) (FOSSIL)
- communis, Argvethites lashensis communis Rouchadze, 1933 † - (HETEROCERATIDAE) (FOSSIL)
- communis, Insolitotheca communis (Billings, 1872 †) - (HYOLITHIDA (UNASSIGNED)) (FOSSIL)
- communis, Insolithotheca communis Billings, 1872 † - syn of: Insolitotheca communis (Billings, 1872 †) - (HYOLITHIDA (unassigned)) (FOSSIL)
- communis, Hyolithes communis Billings, 1872 † - syn of: Inoceramus ussuriensis Voronetz, 1937 † - (HYOLITHIDAE) (FOSSIL)
- communis, Janthina communis J.B.P.A. Lamarck, 1822 - syn of: Janthina janthina (C. Linnaeus, 1758) - (JANTHINIDAE)
- Communis, syn of: Genus Janthina P.F. Röding, 1798 (JANTHINIDAE)
- communis, Parachiton communis H. Saito, 1996 - (LEPTOCHITONIDAE)
- communis, Littorina communis T. Brown, 1843 - syn of: Littorina littorea (C. Linnaeus, 1758) - (LITTORINIDAE)
- communis, Holopella communis J. Perner, 1903 † - (LOXONEMATIDAE) (FOSSIL)
- communis, Lymnaea communis W.E. Leach, 1831 - syn of: Stagnicola palustris (O.F. Müller, 1774) - (LYMNAEIDAE)
- communis, Melanopsis guiraoi communis P.M. Pallary, 1924 - (MELANOPSIDAE)
- communis, Ebala communis K. Bandel, 2005 - (MURCHISONELLIDAE)
- communis, Mya communis J.K. Megerle Von Mühlfeld, 1811 - syn of: Mya arenaria C. Linnaeus, 1758 - (MYIDAE)
- communis, Lithophaga communis J.K. Megerle Von Mühlfeld, 1811 - syn of: Lithophaga lithophaga (C. Linnaeus, 1758) - (MYTILIDAE)
- communis, Neritina communis (J.R.C. Quoy & J.P. Gaimard, 1832) - (NERITIDAE)
- communis, Octopus communis M. Park, 1885 - syn of: Macroctopus maorum (F.W. Hutton, 1880) - (OCTOPODIDAE)
- communis, Orthostoma communis T.A. Conrad, 1838 † - (OPHILETIDAE) (FOSSIL)
- communis, Patella vulgata communis T. Brown, 1844 - (PATELLIDAE)
- communis, Distorsio communis P.F. Röding, 1798 - syn of: Nassarius stolatus (J.F. Gmelin, 1791) - (PERSONIDAE)
- communis, Phanerotrema communis (Billings, 1866 †) - (PHANEROTREMATIDAE) (FOSSIL)
- communis, Spirorapha communis Billings, 1866 † - syn of: Phanerotrema communis (Billings, 1866 †) - (PHANEROTREMATIDAE) (FOSSIL)
- communis, Placuna communis J.K. Megerle Von Mühlfeld, 1811 - syn of: Placuna placenta (C. Linnaeus, 1758) - (PLACUNIDAE)
- communis, Linonautilus communis W.C. Zhou, 1979 † - (PLEURONAUTILIDAE) (FOSSIL)
- communis, Bittiscala communis Finlay & J. Marwick, 1937 † - (POTAMIDIDAE) (FOSSIL)
- communis, Pseudomelania communis (Morris & Lycett) † - (PSEUDOMELANIIDAE) (FOSSIL)
- communis, Pteria communis J.B.P.A. Lamarck, 1801 - syn of: Pteria hirundo (C. Linnaeus, 1758) - (PTERIIDAE)
- communis, Pinctada communis J.K. Megerle Von Mühlfeld, 1811 - syn of: Pinctada margaritifera (C. Linnaeus, 1798) - (PTERIIDAE)
- communis, Chrysallida communis (C.B. Adams, 1852) - (PYRAMIDELLIDAE)
- communis, Chemnitzia communis C.B. Adams, 1852 - syn of: Chrysallida communis (C.B. Adams, 1852) - (PYRAMIDELLIDAE)
- communis, Obtusella communis (O. Böttger, 1906) - (RISSOIDAE)
- communis, Rissoa communis E. Forbes, 1838 - syn of: Onoba semicostata (G. Montagu, 1803) - (RISSOIDAE)
- communis, Cornea communis J.K. Megerle Von Mühlfeld, 1811 - syn of: Sphaerium cornea (C. Linnaeus, 1767) - (SPHAERIIDAE)
- communis, Teredo communis Osler, 1826 - (TEREDINIDAE)
- communis, Styrites communis Mojsisovics, 1893 † - (TROPICELTITIDAE) (FOSSIL)
- communis, Hemipleurotoma communis (T.A. Conrad, 1830 †) - (TURRIDAE) (FOSSIL)
- communis, Polystira communis T.A. Conrad, 1830 † - syn of: Hemipleurotoma communis (T.A. Conrad, 1830 †) - (TURRIDAE) (FOSSIL)
- communis, Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- communis, Vivipara communis J.R. Bourguignat, 1880 - syn of: Viviparus listeri (E. Forbes & S.C.T. Hanley, 1849) - (VIVIPARIDAE)
- communis, Vivipara communis A. Moquin-Tandon, 1855 - syn of: Viviparus listeri (E. Forbes & S.C.T. Hanley, 1849) - (VIVIPARIDAE)
- communis barashi, Acanthochitona communis barashi E.H.J. Leloup, 1969 - syn of: Acanthochitona fascicularis (C. Linnaeus, 1758) - (ACANTHOCHITONIDAE)
- communis borealis, Neptunea communis borealis R.A. Philippi, 1850 - syn of: Neptunea borealis (R.A. Philippi, 1850) - (BUCCINIDAE)
- communis clarki, Neptunea communis clarki (F.B. Meek, 1923) - (BUCCINIDAE)
- communis extensa, Turritella communis extensa T.A. de M. Monterosato in G.S. Coen, 1933 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- communis laeviscula, Turritella communis laeviscula G.S. Coen, 1933 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- communis nigra, Dendrodoris communis nigra J.J. Risbec, 1928 - syn of: Dendrodoris fumata (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (DENDRODORIDIDAE)
- communis rosea, Dendrodoris communis rosea J.J. Risbec, 1928 - syn of: Dendrodoris fumata (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (DENDRODORIDIDAE)
- communis soluta, Turritella communis soluta M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- communisiformis, Euhadra eoa communisiformis T. Kanamaru, 1940 - (BRADYBAENIDAE)
- commutabilis, Clathurella commutabilis E.A. Smith, 1890 - syn of: Mitromorpha commutabilis (E.A. Smith, 1890) - (CLATHURELLIDAE)
- commutabilis, Mitromorpha commutabilis (E.A. Smith, 1890) - (MITROMORPHIDAE)
- commutabilis, Cyclopecten commutabilis A. Feneaux, 1944 - syn of: Similipecten similis (J.C. Laskey, 1811) - (PROPEAMUSSIIDAE)
- commutabilis, Similipecten commutabilis A. Feneaux, 1944 - syn of: Similipecten similis (J.C. Laskey, 1811) - (PROPEAMUSSIIDAE)
- commutata, Arca commutata W. Kobelt, 1889 - syn of: Arca zebra (W.J. Swainson, 1833) - (ARCIDAE)
- commutata, Stabilea costata commutata (E.A. Rossmässler, 1836) - (CLAUSILIIDAE)
- commutata, Costellaria commutata P. Dautzenberg & J.L. Bouge, 1923 - syn of: Vexillum mirabile (A. Adams, 1853) - (COSTELLARIIDAE)
- commutata, Gyroscala commutata T.A. de M. Monterosato, 1877 - syn of: Gyroscala lamellosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- commutata, Lucina commutata R.A. Philippi, 1836 - syn of: Lucinella divaricata (C. Linnaeus, 1758) - (LUCINIDAE)
- commutata, Lucina commutata R.A. Philippi, 1836 - syn of: Lucinella divaricata (C. Linnaeus, 1758) - (LUCINIDAE)
- commutata, Saccella commutata (R.A. Philippi, 1844) - (NUCULANIDAE)
- commutata, Nucula commutata R.A. Philippi, 1844 - syn of: Saccella commutata (R.A. Philippi, 1844) - (NUCULIDAE)
- commutata, Eulimella commutata T.A. de M. Monterosato, 1884 - syn of: Eulimella acicula (R.A. Philippi, 1836) - (PYRAMIDELLIDAE)
- commutata, Macoma commutata T.A. de M. Monterosato, 1884 - syn of: Tellina tenuis E.M. Da Costa, 1778 - (TELLINIDAE)
- commutata consanguinea, Leda commutata consanguinea L.M.D. Bellardi, 1875 - syn of: Saccella commutata (R.A. Philippi, 1844) - (NUCULANIDAE)
- commutatum, Stylonema commutatum J. Perner, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- commutatus, Aequipecten commutatus (T.A. de M. Monterosato, 1875) - (PECTINIDAE)
- commutatus peripheralis, Aequipecten commutatus peripheralis H.H. Dijkstra & R.N. Kilburn, 2001 - (PECTINIDAE)
- comoda, Nuttallia comoda M. Yokoyama, 1925 - syn of: Gari commoda (M. Yokoyama, 1925) - (PSAMMOBIIDAE)
- comorensis, Rhachis comorensis unknown - (CERASTUIDAE)
- comorensis, Kaliella comorensis E. Fischer-Piette & D. Vukadinovic, 1974 - (CHRONIDAE)
- comorensis, Simrothiella comorensis C. Todt & L. Salvini-Plawén, 2003 - (SIMROTHIELLIDAE)
- comorensis, Succinea comorensis E. Fischer-Piette & D. Vukadinovic, 1974 - (SUCCINEIDAE)
- Comorina, syn of: Genus Dendrolimax D.F. Heynemann, 1868 (UROCYCLIDAE)
- comorinensis, Turbinella pyrum comorinensis (J. Hornell, 1916) - (TURBINELLIDAE)
- Comoropeas, Subgenus Prosopeas (Comoropeas) H.A. Pilsbry, 1906 (SUBULINIDAE)
- comosa, Alderella comosa (A. da Costa, 1867) - (LIMAPONTIIDAE)
- comotrana, Carhuaspina comotrana DeVries, 2005 † - (MURICIDAE) (FOSSIL)
- comoxense, Keenocardium californiense comoxense (W.H. Dall, 1900) - (CARDIIDAE)
- comoxensis, Amamibalcis comoxensis (P. Bartsch, 1917) - (EULIMIDAE)
- compacta, Leptachatina compacta W.H. Pease, 1869 - (AMASTRIDAE)
- compacta, Anadara compacta (L.A. Reeve, 1844) - (ARCIDAE)
- compacta, Assiminea compacta (P.P. Carpenter, 1864) - (ASSIMINEIDAE)
- compacta, Astarte compacta Carpenter, 1864 - (ASTARTIDAE)
- compacta, Astartella compacta Girty, 1915 † - (ASTARTIDAE) (FOSSIL)
- compacta, Barleeia gougeti compacta J.G. Jeffreys, 1884 - (BARLEEIIDAE)
- compacta, Bradybaena submandarina compacta H.A. Pilsbry, 1902 - (BRADYBAENIDAE)
- compacta, Nassicola compacta (H.H. Suter, 1917 †) - (BUCCINIDAE) (FOSSIL)
- compacta, Cominella compacta J. Marwick, 1926 † - (BUCCINIDAE) (FOSSIL)
- compacta, Marylnessa yulei compacta (E. Forbes, 1851) - (CAMAENIDAE)
- compacta, Cardita compacta R. Tate, 1886 † - (CARDITIDAE) (FOSSIL)
- compacta, Pusionella compacta H. Strebel, 1914 - (CLAVATULIDAE)
- compacta, Cochliopina compacta (H.A. Pilsbry, 1910) - (COCHLIOPIDAE)
- compacta, Littoridina compacta W.A. Biese, 1944 - (COCHLIOPIDAE)
- compacta, Cyanocyclas compacta W.B. Marshall, 1924 - syn of: Cyanocyclas paranacensis (A.V.M.D. D'Orbigny, 1835) - (CYRENIDAE)
- compacta, Donaldina compacta J. Donald, 1898 † - syn of: Donaldina pulchra (de Koninck, 1881 †) - (DONALDINIDAE) (FOSSIL)
- compacta, Microcystis compacta K.C. Emberton & T.A. Pearce, 2000 - (EUCONULIDAE)
- compacta, Eulima compacta P.P. Carpenter, 1864 - (EULIMIDAE)
- compacta, Stegocoelia compacta J. Donald, 1889 † - (GONIASMATIDAE) (FOSSIL)
- compacta, Mathewsoconcha compacta H.B. Preston, 1913 - (HELICARIONIDAE)
- compacta, Helix compacta W. Kobelt, 1906 - syn of: Helix pomatia C. Linnaeus, 1758 - (HELICIDAE)
- compacta, Sedilia compacta M.J. Faber, 2011 - (HORAICLAVIDAE)
- compacta, Caspia compacta E. Jekelius, 1944 † - (HYDROBIIDAE) (FOSSIL)
- compacta, Hydrobia compacta J.G. Jeffreys, 1884 - syn of: Barleeia gougeti (A. Michaud, 1830) - (HYDROBIIDAE)
- compacta, Mercuria compacta A. Paladilhe, 1869 - syn of: Mercuria emiliana (A. Paladilhe, 1869) - (HYDROBIIDAE)
- compacta, Rochefortia compacta (A.A. Gould, 1861) - (LASAEIDAE)
- compacta, Cavilinga compacta (E.A. Smith, 1890) - (LUCINIDAE)
- compacta, Codakia compacta E.A. Smith, 1890 - syn of: Cavilinga compacta (E.A. Smith, 1890) - (LUCINIDAE)
- compacta, Limnaea compacta W.H. Pease, 1870 - syn of: Lymnaea producta J.W. Mighels, 1845 - (LYMNAEIDAE)
- compacta, Cythara compacta F. Nordsieck, 1977 - (MANGELIIDAE)
- compacta, Aclisina compacta J. Donald, 1898 † - (MURCHISONIIDAE) (FOSSIL)
- compacta, Michelia compacta (J.W. Hall, 1859 †) - (MURCHISONIIDAE) (FOSSIL)
- compacta, Mesocoelia compacta J.W. Hall, 1859 † - syn of: Michelia compacta (J.W. Hall, 1859 †) - (MURCHISONIIDAE) (FOSSIL)
- compacta, Phrontis compacta (G.F. Angas, 1865) - (NASSARIIDAE)
- compacta, Amyclina compacta F. Nordsieck, 1968 † - syn of: Tritia corniculum (A.G. Olivi, 1792 †) - (NASSARIIDAE) (FOSSIL)
- compacta, Natica compacta J.G. Jeffreys, 1885 - syn of: Euspira fusca (H.M.D. de Blainville, 1825) - (NATICIDAE)
- compacta, Nerita compacta E. Forbes, 1846 - (NERITIDAE)
- compacta, Onychoteuthis compacta (S.S. Berry, 1913) - (ONYCHOTEUTHIDAE)
- compacta, Lecanospira compacta (Salter, 1859 †) - (OPHILETIDAE) (FOSSIL)
- compacta, Partula compacta W.H. Pease - (PARTULIDAE)
- compacta, Physa compacta (W.H. Pease, 1870) - (PHYSIDAE)
- compacta, Leptoxis compacta J.G. Anthony, 1854 - (PLEUROCERIDAE)
- compacta, Leonia mammillaris compacta (P.M. Pallary, 1927) - (POMATIIDAE)
- compacta, Tylotoechus compacta (O.F. von Möllendorff, 1897) - (PUPINIDAE)
- compacta, Pyramidula compacta H.H. Suter, 1900 - syn of: Pyramidula patagonica compacta H.H. Suter, 1900 - (PYRAMIDULIDAE)
- compacta, Pyramidula patagonica compacta H.H. Suter, 1900 - (PYRAMIDULIDAE)
- compacta, Asperdaphne compacta C. Hedley, 1922 - (RAPHITOMIDAE)
- compacta, Volvulella compacta (J.C. Melvill, 1906) - (RHIZORIDAE)
- compacta, Victaphanta compacta (J.C. Cox & F.L.S. Hedley, 1912) - (RHYTIDIDAE)
- compacta, Paryphanta compacta J.C. Cox & F.L.S. Hedley, 1912 - syn of: Victaphanta compacta (J.C. Cox & F.L.S. Hedley, 1912) - (RHYTIDIDAE)
- compacta, Merelina compacta A.W.B. Powell, 1927 - (RISSOIDAE)
- compacta, Alvania compacta (P.P. Carpenter, 1864) - (RISSOIDAE)
- compacta, Bralitzia compacta (J. Gründel, 1999 †) - (RISSOINIDAE) (FOSSIL)
- compacta, Semele compacta W.H. Dall, 1900 † - (SEMELIDAE) (FOSSIL)
- compacta, Liotella compacta (W.F. Petterd, 1884) - (SKENEIDAE)
- compacta, Tellina compacta E.A. Smith, 1885 - (TELLINIDAE)
- compacta, Conchocele compacta Ishizaki, 1942 - (THYASIRIDAE)
- compacta, Tripartella compacta Grundel, 1998 † - (TRIPARTELLIDAE) (FOSSIL)
- compacta, Charisma compacta C. Hedley, 1915 - (TROCHIDAE)
- compacta, Pseudanodonta compacta J. Zelebor, 1851 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- compacta, Myonia compacta C.O. Waterhouse, 1969 † - (VACUNELLIDAE) (FOSSIL)
- compacta benthalis, Reticunassa compacta benthalis C.J. Gabriel, 1962 - syn of: Nassarius mobilis (C. Hedley & W.L. May, 1908) - (NASSARIIDAE)
- compacta kuesteri, Pseudanodonta compacta kuesteri F. Haas, 1913 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- compacta striata, Bralitzia compacta striata (J. Gründel, 1999 †) - (RISSOINIDAE) (FOSSIL)
- compactile, Pseudolioceras compactile C.T. Simpson, 1855 † - (HILDOCERATIDAE) (FOSSIL)
- compactilis, Melanella compactilis (É.A.A. Locard, 1892) - (EULIMIDAE)
- compactilis, Latirus compactilis Martin, 1931 † - (FASCIOLARIIDAE) (FOSSIL)
- compactilis, Hydrobia compactilis Bell, 1893 † - (HYDROBIIDAE) (FOSSIL)
- compactilis, Eulimella compactilis (J.G. Jeffreys, 1867) - syn of: Eulimella superflua (T.A. de M. Monterosato, 1875) - (PYRAMIDELLIDAE)
- compactula, Vallonia hoppla compactula J. Gerber, 1996 - (VALLONIIDAE)
- compactum, Buccinulum compactum (H.H. Suter, 1917 †) - (BUCCINIDAE) (FOSSIL)
- compactum, Buccinum compactum W. Newcomb, 1896 - syn of: Buccinum polare J.E. Gray, 1839 - (BUCCINIDAE)
- compactum, Caecum compactum P.P. Carpenter, 1857 - (CAECIDAE)
- compactum, Graphoceras compactum Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- compactum, Zhusilengospira compactum Pan & Cook, 2003 † - (LUCIELLIDAE) (FOSSIL)
- compactum, Procerithium compactum Grundel, 1999 † - (PROCERITHIIDAE) (FOSSIL)
- compactum, Claviderma compactum D. Ivanov & A.H. Scheltema, 2008 - (PROCHAETODERMATIDAE)
- compactum, Eucalodium compactum H.A. Pilsbry, 1893 - (UROCOPTIDAE)
- compactus, Tornatellides compactus (E.R. Sykes, 1900) - (ACHATINELLIDAE)
- compactus, Kutatissites densecostatum compactus Kakabadze & Hoedemaeker, 2004 † - (ANCYLOCERATIDAE) (FOSSIL)
- compactus, Heliacus compactus G. Schmelz, 2001 † - (ARCHITECTONICIDAE) (FOSSIL)
- compactus, Macrochlamys compactus (J.F. Quadras & O.F. von Möllendorff) - (ARIOPHANTIDAE)
- compactus, Simobelus compactus Dzyuba, 2013 † - (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- compactus, Bostryx compactus H.C. Fulton, 1901 - (BULIMULIDAE)
- compactus, Bostryx zilchi compactus W.K. Weyrauch, 1960 - (BULIMULIDAE)
- compactus, Reticulapex compactus K.C. Emberton & T.A. Pearce, 2000 - (CHAROPIDAE)
- compactus, Alycaeus compactus A.R.J.B. Bavay & P. Dautzenberg, 1900 - (CYCLOPHORIDAE)
- compactus, Damesites compactus (E. Forbes 1846 †) - (DESMOCERATIDAE) (FOSSIL)
- compactus, Radiodiscus compactus (H.H. Suter, 1900) - (HELICODISCIDAE)
- compactus, Caseolus innominatus compactus (R.T. Lowe, 1831) - (HYGROMIIDAE)
- compactus, Lanceolites compactus A. Hyatt & Smith, 1905 † - (LANCEOLITIDAE) (FOSSIL)
- compactus, Naquetia compactus (W.M. Gabb, 1873 †) - (MURICIDAE) (FOSSIL)
- compactus, Pecten compactus W.H. Dall, 1898 - syn of: Argopecten ventricosus (G.B. II Sowerby, 1842) - (PECTINIDAE)
- compactus, Fossarus compactus W.H. Dall, 1889 - (PLANAXIDAE)
- compactus, Prolecanites compactus (F.B. Meek & A.H. Worthen, 1865 †) - (PROLECANITIDAE) (FOSSIL)
- compactus, Shastites compactus Smith, 1927 † - (SANDLINGITIDAE) (FOSSIL)
- compactus, Haplocochlias compactus (W.H. Dall, 1889) - (SKENEIDAE)
- compactus, Subulites compactus J.J.F. Whiteaves, 1884 † - (SUBULITIDAE) (FOSSIL)
- compactus, Unio compactus I. Lea, 1859 - syn of: Epioblasma metastriata T.A. Conrad, 1838 - (UNIONIDAE)
- compactus, Petaloconchus compactus (P.P. Carpenter, 1864) - (VERMETIDAE)
- compactus, Cipangopaludina chinensis compactus (G. Nevill, 1869) - (VIVIPARIDAE)
- compactus portosanctanus, Caseolus compactus portosanctanus R.T. Lowe, 1855 - syn of: Caseolus innominatus (J.E. Gray, 1825) - (HYGROMIIDAE)
- companyi, Zuluscaphites companyi Latil, 1990 † - syn of: Zuluscaphites orycteropusi Van Hoepen, 1955 † - (LYELLICERATIDAE) (FOSSIL)
- companyi, Tirnovella companyi Hoedemaeker, 2016 † - (NEOCOMITIDAE) (FOSSIL)
- companyoi, Mangelia companyoi M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1883 - syn of: Mangelia unifasciata (G.P. Deshayes, 1835) - (MANGELIIDAE)
- companyoi, Nassarius companyoi (C.F. Fontannes, 1879 †) - (NASSARIIDAE) (FOSSIL)
- companyoni, Clausilia companyoni J.R. Bourguignat, 1877 - syn of: Clausilia rugosa reboudii D. Dupuy, 1850 - (CLAUSILIIDAE)
- companyonii, Iberellus companyonii (E.A. Rossmässler, 1839) - (HELICIDAE)
- companyonii, Helix companyonii Aleron in M. Companyo, 1837 - syn of: Iberellus companyonii (E.A. Rossmässler, 1839) - (HELICIDAE)
- companyonii, Testacella companyonii D. Dupuy, 1850 - syn of: Testacella scutulum G.B. I Sowerby, 1821 - (TESTACELLIDAE)
- companyonii minoricensis, Iberellus companyonii minoricensis (H. Mittre, 1842) - (HELICIDAE)
- companyonii pythiusensis, Iberellus companyonii pythiusensis A. Bofill & J.B. Aguilar-Amat, 1924 - (HELICIDAE)
- companyonii tanitianus, Iberellus companyonii tanitianus Forès & M. Vilella, 1995 - (HELICIDAE)
- companyonii tanitianus, Iberellus companyonii tanitianus (Forés & M. Vilella, 1993) - (HELICIDAE)
- compar, Deceptrix compar (Barrande 1881 †) - (CARDIOLARIIDAE) (FOSSIL)
- compar, Poleumita compar J. Perner, 1903 † - syn of: Oriostoma compar (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- compar, Helix compar R.T. Lowe, 1831 - (HELICIDAE)
- compar, Sonorella compar H.A. Pilsbry, 1919 - (HELMINTHOGLYPTIDAE)
- compar, Ochtephila compar (R.T. Lowe, 1831) - (HYGROMIIDAE)
- compar, Mangelia horneana compar J.C. Melvill, 1917 - (MANGELIIDAE)
- compar, Nuculoma compar T. Iredale, 1939 - syn of: Ennucula superba (C. Hedley, 1902) - (NUCULIDAE)
- compar, Oriostoma compar (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- compar, Amerianna compar T. Iredale, 1943 - (PLANORBIDAE)
- compar, Cyclonema compar J. Perner, 1903 † - (PLATYCERATIDAE) (FOSSIL)
- compar, Paralaoma compar T. Iredale, 1944 - (PUNCTIDAE)
- comparabilis, Eulimella comparabilis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- comparalis, Chlamys comparalis (M. Tuomey & Holmes †) - (PECTINIDAE) (FOSSIL)
- comparata, Acmaturris comparata W.P. Woodring, 1928 † - (MANGELIIDAE) (FOSSIL)
- comparilis, Aequipecten comparilis (M. Tuomey & Holmes, 1855 †) - (PECTINIDAE) (FOSSIL)
- compbelli, Plaxiphora aurata compbelli (H. Filhol, 1880) - (MOPALIIDAE)
- compersa, Mitrella compersa J.S. Gaskoin, 1851 - syn of: Indomitrella conspersa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- comperta, Naticopsis comperta (J.W. Hall, 1879 †) - (DELPHINULOPSIDAE) (FOSSIL)
- compertus, Nassarius compertus R. Fernández-Garcés, J. Espinosa & E. Rolán, 1990 - (NASSARIIDAE)
- compingtae, Monacha compingtae (P.M. Pallary, 1929) - (HYGROMIIDAE)
- compitalis, Acanthoceras compitalis Stoyanow, 1949 † - (ACANTHOCERATIDAE) (FOSSIL)
- compitorum, Diniatys compitorum H.A. Pilsbry, 1921 - syn of: Diniatys dentifer (A. Adams, 1850) - (HAMINOEIDAE)
- compitum, Cyclopecten compitum J. Marwick, 1929 † - (PROPEAMUSSIIDAE) (FOSSIL)
- complacens, Episfaxis complacens (J. Perner, 1903 †) - (MICRODOMATIDAE) (FOSSIL)
- complacens, Cosmina complacens J. Perner, 1903 † - syn of: Episfaxis complacens (J. Perner, 1903 †) - (MICRODOMATIDAE) (FOSSIL)
- complacita, Anodonta complacita G. Servain, 1882 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- complanans, Straparollus complanans (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- complanans, Morphotropis complanans J. Perner, 1903 † - syn of: Straparollus complanans (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- complanata, Acanthochitona complanata A.F.B. Hull, 1924 - (ACANTHOCHITONIDAE)
- complanata, Ozarkina complanata Ulrich & al., 1931 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- complanata, Archinacella complanata J. Perner, 1903 † - syn of: Barrandicella ovata (J. Perner, 1903 †) - (ARCHINACELLIDAE) (FOSSIL)
- complanata, Barrandicella complanata J. Perner, 1903 † - syn of: Barrandicella ovata (J. Perner, 1903 †) - (ARCHINACELLIDAE) (FOSSIL)
- complanata, Barbatia complanata (J.G. Bruguière, 1789) - (ARCIDAE)
- complanata, Barbatia complanata J.H. Chemnitz - syn of: Barbatia candida helblingii (J.G. Bruguière, 1789) - (ARCIDAE)
- complanata, Arca complanata W. Wood, 1818 - syn of: Barbatia candida (G.S. Helbling, 1779) - (ARCIDAE)
- complanata, Anisodonta complanata (G.P. Deshayes, 1857 †) - (BASTEROTIIDAE) (FOSSIL)
- complanata, Crepidula complanata C.F.F. von Krauss, 1848 - (CALYPTRAEIDAE)
- complanata, Westraltrachia froggatti complanata G.A. Solem, 1984 - (CAMAENIDAE)
- complanata, Venericardia complanata G.P. Deshayes, 1825 † - (CARDITIDAE) (FOSSIL)
- complanata, Cardita complanata A.E.M. Cossmann & Pisarro, 1904 † - (CARDITIDAE) (FOSSIL)
- complanata, Cavolinia complanata C. Gegenbaur, 1855 - syn of: Cavolinia tridentata (P. Forsskål in C. Niebuhr, 1775) - (CAVOLINIIDAE)
- complanata, Clymenia complanata J.W. Hall, 1843 † - syn of: Probeloceras complanatum (J.W. Hall, 1843 †) - (CLYMENIIDAE) (FOSSIL)
- complanata, Cyrtodontula complanata (Foerste, 1914 †) - (CYRTODONTIDAE) (FOSSIL)
- complanata, Marmolatella complanata (Stoppani, 1857 †) - (DELPHINULOPSIDAE) (FOSSIL)
- complanata, Geitodoris complanata A.E. Verrill, 1880 - syn of: Geitodoris planata (J. Alder & A. Hancock, 1846) - (DISCODORIDIDAE)
- complanata, Doris complanata A.E. Verrill, 1880 - syn of: Geitodoris planata (J. Alder & A. Hancock, 1846) - (DORIDIDAE)
- complanata, Dreissena complanata É.A.A. Locard, 1893 - syn of: Dreissena polymorpha (P.S. Pallas, 1771) - (DREISSENIDAE)
- complanata, Emarginula crassa complanata F.W. Harmer † - (FISSURELLIDAE) (FOSSIL)
- complanata, Hyria complanata L.H. Hupé, 1857 - syn of: Prisodon syrmatophorus (J.F. Gmelin, 1791) - (HYRIIDAE)
- complanata, Mutelina complanata F.P. Jousseaume, 1886 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- complanata, Bornia geoffroyi complanata R.A. Philippi, 1836 - (KELLIIDAE)
- complanata, Erycina complanata G.B. I Sowerby, 1822 - syn of: Atactodea erycinaea (J.B.P.A. Lamarck, 1818) - (LASAEIDAE)
- complanata, Lutraria complanata (J.F. Gmelin, 1791) - (MACTRIDAE)
- complanata, Mactra complanata L.A. Reeve, 1854 - syn of: Simomactra chionia (J.R. le B. Tomlin, 1921) - (MACTRIDAE)
- complanata, Mactra complanata J.F. Gmelin, 1791 - syn of: Lutraria complanata (J.F. Gmelin, 1791) - (MACTRIDAE)
- complanata, Manticula complanata Crame, 1995 † - (MANTICULIDAE) (FOSSIL)
- complanata, Paphies complanata G.B. I Sowerby, 1822 - syn of: Atactodea erycinaea (J.B.P.A. Lamarck, 1818) - (MESODESMATIDAE)
- complanata, Mya complanata J. Lightfoot, 1786 - syn of: Unio abbevillensis I. Lea, 1857 - (MYIDAE)
- complanata, Phrontis complanata (W.L. Powys, 1835) - (NASSARIIDAE)
- complanata, Nassa complanata W.L. Powys, 1835 - syn of: Phrontis complanata (W.L. Powys, 1835) - (NASSARIIDAE)
- complanata, Natica complanata É.A.A. Locard, 1886 - syn of: Euspira nitida (E. Donovan, 1804) - (NATICIDAE)
- complanata, Leda complanata H.P.C. Møller, 1842 - syn of: Nuculana minuta (O.F. Müller, 1776) - (NUCULANIDAE)
- complanata, Ophileta complanata Vanuxem, 1842 † - (OPHILETIDAE) (FOSSIL)
- complanata, Ostrea complanata A. Feneaux, 1944 - syn of: Crassostrea angulata (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- complanata, Philine complanata R.B. Watson, 1897 - (PHILINIDAE)
- complanata, Plicatula complanata G.P. Deshayes in L. Maillard, 1863 - (PLICATULIDAE)
- complanata, Triodopsis complanata (H.A. Pilsbry, 1898) - (POLYGYRIDAE)
- complanata, Eutudorops complanata (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- complanata, Hiatula complanata V. Bertin, 1880 - syn of: Gari crassula (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- complanata, Pupina complanata W.H. Pease, 1860 - (PUPINIDAE)
- complanata, Retusa complanata (R.B. Watson, 1883) - (RETUSIDAE)
- complanata, Ribeiria complanata Salter, 1866 † - (RIBEIRIIDAE) (FOSSIL)
- complanata, Streptacis complanata Hoare & al., 1997 † - (STREPTACIDIDAE) (FOSSIL)
- complanata, Corbicella complanata J. Lycett, 1853 † - (TANCREDIIDAE) (FOSSIL)
- complanata, Tellina complanata J.F. Gmelin, 1791 - syn of: Tellina planata C. Linnaeus, 1758 - (TELLINIDAE)
- complanata, Turritella complanata Brosamlen, 1909 † - syn of: Gordenella fahrenkohli (Rouillier, 1848 †) - (TURRITELLIDAE) (FOSSIL)
- complanata, Pleurophorina complanata L. Waagen, 1881 † - (UCUMARIIDAE) (FOSSIL)
- complanata, Lasmigona complanata (D.W. Barnes, 1823) - (UNIONIDAE)
- complanata, Pseudanodonta complanata (E.A. Rossmässler, 1835) - (UNIONIDAE)
- complanata, Elliptio complanata (J. Lightfoot, 1786) - (UNIONIDAE)
- complanata, Anodonta complanata E.A. Rossmässler, 1836 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata, Arthemis complanata É.A.A. Locard, 1892 - syn of: Dosinia exoleta (C. Linnaeus, 1758) - (VENERIDAE)
- complanata abbreviata, Mutelina complanata abbreviata J. Germain, 1907 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- complanata alabamensis, Lasmigona complanata alabamensis A.H. Clarke, 1985 - (UNIONIDAE)
- complanata compacta, Anodonta complanata compacta J. Zelebor, 1851 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata curta, Mutelina complanata curta J. Germain, 1907 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- complanata elongata, Mutelina complanata elongata J. Germain, 1907 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- complanata elongata, Pseudanodonta complanata elongata J.J.J. Holandre, 1836 - syn of: Pseudanodonta elongata (J.J.J. Holandre, 1836) - (UNIONIDAE)
- complanata jijiana, Anodonta complanata jijiana Nicodim, 1909 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata lacustrina, Pseudanodonta complanata lacustrina A.V. Grossu, 1962 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata major, Phrontis complanata major (R.E.C. Stearns, 1894) - (NASSARIIDAE)
- complanata moniquensis, Cyrtodontula complanata moniquensis (Foerste, 1924 †) - (CYRTODONTIDAE) (FOSSIL)
- complanata savensis, Pseudanodonta complanata savensis W. Kobelt & F. Haas, 1911 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata sobriewskii, Pseudanodonta complanata sobriewskii O.W. Von Rosen, 1925 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanata tumida, Anodonta complanata tumida J. Zelebor, 1851 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- complanatum, Probeloceras complanatum (J.W. Hall, 1843 †) - (ACANTHOCLYMENIIDAE) (FOSSIL)
- complanatum, Prototoceras complanatum J.K. Zhao & al., 1978 † - (ARAXOCERATIDAE) (FOSSIL)
- complanatum, Caecum complanatum L. de Folin, 1867 - (CAECIDAE)
- complanatum, Lentidium complanatum (Sowerby, 1822 †) - (CORBULIDAE) (FOSSIL)
- complanatum, Lentidium complanatum (J.B.P.A. Lamarck, 1822 †) - (CORBULIDAE) (FOSSIL)
- complanatum, Shumardoceras complanatum (Shumard, 1863 †) - (ESTONIOCERATIDAE) (FOSSIL)
- complanatum, Megalomastoma complanatum L. Pfeiffer, 1856 - syn of: Farcimen procer F. Poey, 1854 - (MEGALOMASTOMIDAE)
- complanatum, Muensteroceras complanatum (de Koninck, 1880 †) - (MUENSTEROCERATIDAE) (FOSSIL)
- complanatum, Uraloceras complanatum (Voinova, 1934 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- complanatum, Cochlodesma complanatum Wood, 1857 † - (PERIPLOMATIDAE) (FOSSIL)
- complanatum, Otopoma complanatum H.H. Godwin-Austen, 1881 - syn of: Otopoma albicans (J.E. Gray & G.B. I Sowerby, 1839) - (POMATIIDAE)
- complanatum, Pisidium complanatum V. Sterki, 1903 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- complanatus, Agoniatites complanatus Wedekind, 1918 † - syn of: Agoniatites obliquus (Whidborne, 1890 †) - (AGONIATITIDAE) (FOSSIL)
- complanatus, Bellerophon complanatus E.L. Yochelson, 1960 † - (BELLEROPHONTIDAE) (FOSSIL)
- complanatus, Bulimus complanatus A.E. Reuss, 1849 † - syn of: Palaeomastus complanatus (A.E. Reuss, 1849 †) - (BULIMULIDAE) (FOSSIL)
- complanatus, Staffites complanatus Matern, 1931 † - (CHEILOCERATIDAE) (FOSSIL)
- complanatus, Conus complanatus G.B. II Sowerby, 1866 - syn of: Cylinder victoriae L.A. Reeve, 1843 - (CONIDAE)
- complanatus, Pachydiscus complanatus (M. Collignon, 1952 †) - (DESMOCERATIDAE) (FOSSIL)
- complanatus, Donax complanatus G. Montagu, 1803 - syn of: Donax variegatus (J.F. Gmelin, 1791) - (DONACIDAE)
- complanatus, Palaeomastus complanatus (A.E. Reuss, 1849 †) - (ENIDAE) (FOSSIL)
- complanatus, Eodon complanatus (J.W. Hall, 1877 †) - (EODONIDAE) (FOSSIL)
- complanatus, Microdon complanatus J.W. Hall, 1877 † - syn of: Eodon complanatus (J.W. Hall, 1877 †) - (EODONIDAE) (FOSSIL)
- complanatus, Euomphalus complanatus Klipstein, 1843 † - syn of: Anomphalus helicoides (Münster, 1841 †) - (EUOMPHALIDAE) (FOSSIL)
- complanatus, Helix complanatus C. Linnaeus, 1758 - syn of: Hippeutis complanatus (C. Linnaeus, 1758) - (HELICIDAE)
- complanatus, Permophorus complanatus L. Waagen, 1881 † - syn of: Pleurophorina complanata L. Waagen, 1881 † - (KALENTERIDAE) (FOSSIL)
- complanatus, Timanites complanatus Petter, 1959 † - (KOENENITIDAE) (FOSSIL)
- complanatus, Pecten complanatus J. de C. Sowerby, 1828 † - (PECTINIDAE) (FOSSIL)
- complanatus, Ensis complanatus J. de C. Sowerby, 1844 † - (PHARIDAE) (FOSSIL)
- complanatus, Trichites complanatus A.E.M. Cossmann, 1900 † - (PINNIDAE) (FOSSIL)
- complanatus, Hippeutis complanatus (C. Linnaeus, 1758) - (PLANORBIDAE)
- complanatus, Segmentina complanatus J.L.M. Poiret, 1801 - syn of: Segmentina nitida (O.F. Müller, 1774) - (PLANORBIDAE)
- complanatus, Planorbis complanatus A. Stein, 1850 - syn of: Planorbis planorbis (C. Linnaeus, 1758) - (PLANORBIDAE)
- complanatus, Gyraulus quadrangulus complanatus E. Jekelius, 1932 † - (PLANORBIDAE) (FOSSIL)
- complanatus, Craspedites complanatus A. von Koenen 1902 † - (POLYPTYCHITIDAE) (FOSSIL)
- complanatus, Utriculus complanatus R.B. Watson, 1883 - syn of: Retusa complanata (R.B. Watson, 1883) - (RETUSIDAE)
- complanatus, Unio complanatus A.T. von Middendorff, 1851 - syn of: Margaritifera middendorffi (O.W. Von Rosen, 1926) - (UNIONIDAE)
- complanatus, Textivenus complanatus (J.L.M. Defrance, 1828 †) - (VENERIDAE) (FOSSIL)
- complanatus e.v., Nautilus complanatus e.v. W.v. Hisinger † - syn of: Phragmoceras hisingeri A.V.M.D. D'Orbigny † - (NAUTILIDAE) (FOSSIL)
- complanatus mainensis, Unio complanatus mainensis W. Rich, 1915 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- complanatus perlatus, Goniatites complanatus perlatus J.W. Hall, 1874 † - syn of: Ponticeras perlatum (J.W. Hall, 1874 †) - (GONIATITIDAE) (FOSSIL)
- complanosum, Radstockiceras complanosum C.T. Simpson, 1855 † - (OXYNOTICERATIDAE) (FOSSIL)
- complanus, Cryptopecten complanus Z.R. Wang, 1983 - syn of: Cryptopecten bullatus (P. Dautzenberg & A.R.J.B. Bavay, 1912) - (PECTINIDAE)
- complementia, Caspia complementia V.V. Anistratenko & Gozhik, 1995 † - (HYDROBIIDAE) (FOSSIL)
- complex, Paradimorphoceras complex (Moore, 1939 †) - (DIMORPHOCERATIDAE) (FOSSIL)
- complex, Fusinus pauciliratus complex M.A. Snyder, 2000 - (FASCIOLARIIDAE)
- complex, Dichostasia complex E.L. Yochelson, 1956 † - (LIOTIIDAE) (FOSSIL)
- complexa, Longstaffia complexa (J. Perner, 1903 †) - (LOPHOSPIRIDAE) (FOSSIL)
- complexa, Myadora complexa T. Iredale, 1924 - (MYOCHAMIDAE)
- complexa, Cymbiola complexa (T. Iredale, 1924) - (VOLUTIDAE)
- complexa frazerensis, Cymbiola complexa frazerensis P. Bail & A. Limpus, 1998 - (VOLUTIDAE)
- complexa nielseni, Cymbiola complexa nielseni D.F. McMichael, 1963 - (VOLUTIDAE)
- complexa pervalida, Myadora complexa pervalida B.C. Cotton, 1931 - (MYOCHAMIDAE)
- complexicostata, Lyriochlamys complexicostata (W.M. Gabb, 1869 †) - (PECTINIDAE) (FOSSIL)
- complexirhyna, Benthobia complexirhyna L.R.L. Simone, 2003 - (BENTHOBIIDAE)
- complexum, Bathmoceras complexum (Barrande, 1856 †) - (BATHMOCERATIDAE) (FOSSIL)
- complexum, Fissidentalium complexum (W.H. Dall, 1895) - (DENTALIIDAE)
- Complicachlamys, Genus Complicachlamys T. Iredale, 1939 (PECTINIDAE)
- complicata, Eoturris complicata (H.H. Suter, 1917 †) - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- complicatum, Engonoceras complicatum A. Hyatt, 1903 † - (ENGONOCERATIDAE) (FOSSIL)
- complicatum, Eogonioloboceras complicatum (de Koninck, 1842 †) - (EOGONIOLOBOCERATIDAE) (FOSSIL)
- complicatum, Radstockiceras complicatum Buckman, 1918 † - (OXYNOTICERATIDAE) (FOSSIL)
- complicatus, Conus complicatus R. Tate, 1890 † - (CONIDAE) (FOSSIL)
- complicatus, Petaloconchus complicatus W.H. Dall, 1908 - (VERMETIDAE)
- comploji, Peripetoceras comploji Prinoth & Posenato, 2007 † - (LIROCERATIDAE) (FOSSIL)
- compluviata, Orpiella compluviata (J.C. Cox, 1871) - (HELICARIONIDAE)
- complytropis, Murex complytropis Author unknown † - (MURICIDAE) (FOSSIL)
- Componochiton, syn of: Genus Loricella H.A. Pilsbry, 1893 (LORICIDAE)
- composita, Alaria composita Sowerby, 1827 - syn of: Rostellaria composita Sowerby, 1827 † - (APORRHAIDAE)
- composita, Pavlovia composita (Cope, 1978 †) - (DORSOPLANITIDAE) (FOSSIL)
- composita, Cyclonema composita J. Perner, 1903 † - (PLATYCERATIDAE) (FOSSIL)
- composita, Pleurotomaria composita Morris & Lycett † - (PLEUROTOMARIIDAE) (FOSSIL)
- composita, Multitentacula composita E.M. Krylova, 1995 - (PROTOCUSPIDARIIDAE)
- composita, Oscilla composita Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- composita, Rostellaria composita Sowerby, 1827 † - (ROSTELLARIIDAE) (FOSSIL)
- composita, Tetratheca composita Meshkova, 1974 † - (TETRATHECIDAE) (FOSSIL)
- compositum, Cerithium compositum É.A.A. Locard & E. Caziot, 1900 ex Monterosato MS - syn of: Cerithium vulgatum J.G. Bruguière, 1792 - (CERITHIIDAE)
- compositus, Fusinus compositus A. Maybloom, 1951 - syn of: Fusinus undulatus (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- compositus, Suakites compositus Leonova, 1982 † - (MARATHONITIDAE) (FOSSIL)
- compositus, Oblisicornus compositus A.V. Sysoev, 1968 † - (NOTABILITIDAE) (FOSSIL)
- Composodrillia, syn of: Genus Compsodrillia W.P. Woodring, 1928 (PSEUDOMELATOMIDAE)
- compospira, Pleurotoma compospira P. Dautzenberg & H. Fischer, 1896 - syn of: Typhlomangelia nivalis (S.L. Lovén, 1846) - (TURRIDAE)
- compostelana, Urgorria compostelana Ó. García-Álvarez & L. Salvini-Plawén, 2001 - (RHOPALOMENIIDAE)
- compostellanum, Leptochiton compostellanum P. Carmona Zavilde & V. Urgorri, 1999 - (LEPTOCHITONIDAE)
- compradora, Epitonium compradora W.H. Dall, 1917 - syn of: Epitonium hindsii (P.P. Carpenter, 1856) - (EPITONIIDAE)
- comprendus, Rhabdites comprendus P.A. Zhuravleva, 1978 † - (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- compressa, Acmaea compressa J.C. Verco, 1906 - syn of: Naccula compressa (J.C. Verco, 1906) - (ACMAEIDAE)
- compressa, Ampullaria compressa B. de Basterot, 1825 † - syn of: Globularia compressa (B. de Basterot, 1825 †) - (AMPULLARIIDAE) (FOSSIL)
- compressa, Globularia compressa (B. de Basterot, 1825 †) - (AMPULLINIDAE) (FOSSIL)
- compressa, Pisinna compressa (C.F. Laseron, 1956) - (ANABATHRIDAE)
- compressa, Satiella compressa W.T. Blanford & H.H. Godwin-Austen, 1908 - (ARIOPHANTIDAE)
- compressa, Astarte compressa (Montague, 1808) - (ASTARTIDAE)
- compressa, Astarte compressa G. Montagu, 1808 - syn of: Astarte montagui (L.W. Dillwyn, 1817) - (ASTARTIDAE)
- compressa, Cymbularia compressa E.F.R.K. Koken & J. Perner, 1925 † - (BELLEROPHONTIDAE) (FOSSIL)
- compressa, Boettgerilla compressa H.R. Simroth, 1910 - (BOETTGERILLIDAE)
- compressa, Neptunea antiqua compressa (J.G. Jeffreys, 1867) - (BUCCINIDAE)
- compressa, Bulla compressa A. de Rochebrune, 1881 - (BULLIDAE)
- compressa, Bythinella compressa G.R. von Frauenfeld, 1857 - (BYTHINELLIDAE)
- compressa, Jayella compressa T. Iredale & C.F. Laseron, 1957 - (CAECIDAE)
- compressa, Cyclocardia compressa (L.A. Reeve, 1843) - (CARDITIDAE)
- compressa, Venericardia compressa L.A. Reeve, 1843 † - (CARDITIDAE) (FOSSIL)
- compressa, Cardita compressa Cornalia, 1847 † - syn of: Cardita crenata G.A. Goldfuss, 1837 † - (CARDITIDAE) (FOSSIL)
- compressa, Passamaella compressa E. Neubert, 2005 - (CERASTUIDAE)
- compressa, Albinaria compressa (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- compressa, Phaedusa filicostata compressa F.E. Loosjes, 1953 - (CLAUSILIIDAE)
- compressa, Clio compressa L.F.A. Souleyet, 1852 - syn of: Diacria trispinosa (de Blainville, 1821) - (CLIIDAE)
- compressa, Cocculina compressa N. Tiberi, 1882 - (COCCULINIDAE)
- compressa, Cunanax compressa (C. Hedley & W.L. May, 1908) - (CONDYLOCARDIIDAE)
- compressa, Corbula compressa J.C. Verco, 1896 - syn of: Corbula zelandica J.R.C. Quoy & J.P. Gaimard, 1835 - (CORBULIDAE)
- compressa, Vexillum citrinum compressa (G.B. II Sowerby, 1828) - (COSTELLARIIDAE)
- compressa, Crassatella compressa J.B.P.A. Lamarck, 1806 † - (CRASSATELLIDAE) (FOSSIL)
- compressa, Crassatella compressa A. Adams & L.A. Reeve, 1850 - syn of: Nipponocrassatella adamsi (W. Kobelt, 1886) - (CRASSATELLIDAE)
- compressa, Creseis compressa J.F. von Eschscholtz, 1829 - syn of: Hyalocylis striata (P.C.A.S.L. Rang, 1828) - (CRESEIDAE)
- compressa, Ctenodonta compressa Ulrich, 1894 † - (CTENODONTIDAE) (FOSSIL)
- compressa, Japonia compressa (O.F. von Möllendorff, 1897) - (CYCLOPHORIDAE)
- compressa, Cymaclymenia compressa (G.G. Münster, 1832 †) - (CYMACLYMENIIDAE) (FOSSIL)
- compressa, Erronea compressa P. Dautzenberg, 1903 - syn of: Erronea errones (C. Linnaeus, 1758) - (CYPRAEIDAE)
- compressa, Corbicula compressa G.P. Deshayes, 1835 † - (CYRENIDAE) (FOSSIL)
- compressa, Corbicula compressa H. Adams & A. Adams, 1857 - syn of: Corbicula rivalis (R.A. Philippi, 1851) - (CYRENIDAE)
- compressa, Cyrtodontula compressa (Ulrich, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- compressa, Whitella compressa Ulrich, 1890 † - syn of: Cyrtodontula compressa (Ulrich, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- compressa, Gibberula compressa (C.F. Laseron, 1957) - (CYSTISCIDAE)
- compressa, Puzosia compressa (Kossmat, 1897 †) - (DESMOCERATIDAE) (FOSSIL)
- compressa, Amblychilepas compressa K.H.J. Thiele, 1930 - (FISSURELLIDAE)
- compressa, Agariste compressa (F.J. Cantraine, 1835 †) - (FISSURELLIDAE) (FOSSIL)
- compressa, Pileatona compressa C.F. Laseron, 1956 - (GALEOMMATIDAE)
- compressa, Gerthiceras compressa Westermann & Riccardi, 1982 † - (HAMMATOCERATIDAE) (FOSSIL)
- compressa, Geomitra compressa (Münster, 1841 †) - (HYGROMIIDAE) (FOSSIL)
- compressa, Yochelsonella compressa Flower, 1968 † - (HYPSELOCONIDAE) (FOSSIL)
- compressa, Stutchburia compressa (Morris, 1845 †) - (KALENTERIDAE) (FOSSIL)
- compressa, Pseudopythina compressa W.H. Dall, 1899 - syn of: Neaeromya compressa (W.H. Dall, 1899) - (KELLIIDAE)
- compressa, Kellia compressa K.O. Milaschewitsch, 1909 - syn of: Hemilepton nitidum (W. Turton, 1822) - (KELLIIDAE)
- compressa, Squillaconcha compressa (W.H. Dall, 1899) - (LASAEIDAE)
- compressa, Neaeromya compressa (W.H. Dall, 1899) - (LASAEIDAE)
- compressa, Rochefortia compressa W.H. Dall, 1913 - syn of: Kurtiella compressa (W.H. Dall, 1913) - (LASAEIDAE)
- compressa, Limopsis compressa G. Nevill & H. Nevill, 1874 - (LIMOPSIDAE)
- compressa, Limopsis compressa W.H. Dall, 1896 - syn of: Limopsis dalli É. Lamy, 1912 - (LIMOPSIDAE)
- compressa, Littorina compressa J.G. Jeffreys, 1865 - (LITTORINIDAE)
- compressa, Lophospira compressa Endo, 1935 † - syn of: Lophospira milleri (Miller, 1877 †) - (LOPHOSPIRIDAE) (FOSSIL)
- compressa, Lottia compressa (C. Linnaeus, 1758) - (LOTTIIDAE)
- compressa, Jorgenia compressa (W.H. Dall, 1881) - (LUCINIDAE)
- compressa, Myrtea compressa É. Lamy, 1920 - syn of: Jorgenia compressa (W.H. Dall, 1881) - (LUCINIDAE)
- compressa, Loripes compressa W.H. Dall, 1881 - syn of: Jorgenia compressa (W.H. Dall, 1881) - (LUCINIDAE)
- compressa, Lyonsiella compressa J.A. Allen & H. Turner, 1974 - (LYONSIELLIDAE)
- compressa, Aliomactra compressa Stephenson 1952 † - (MACTRIDAE) (FOSSIL)
- compressa, Mactrotoma compressa (L. Spengler, 1802) - (MACTRIDAE)
- compressa, Spisula compressa (G.P. Deshayes, 1832 †) - (MACTRIDAE) (FOSSIL)
- compressa, Mactra compressa L. Spengler, 1802 - syn of: Mactrotoma compressa (L. Spengler, 1802) - (MACTRIDAE)
- compressa, Mactra compressa R. Pulteney, 1799 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (MACTRIDAE)
- compressa, Volvarina compressa (L.A. Reeve, 1865) - (MARGINELLIDAE)
- compressa, Huabiella compressa P. David & al., 2011 † - (MEGADESMIDAE) (FOSSIL)
- compressa, Mitra compressa G.B. II Sowerby, 1828 - syn of: Vexillum citrinum compressa (G.B. II Sowerby, 1828) - (MITRIDAE)
- compressa, Kurtiella compressa (W.H. Dall, 1913) - (MONTACUTIDAE)
- compressa, Soyokellia compressa T. Habe, 1958 - (MONTACUTIDAE)
- compressa, Mysella compressa W.H. Dall, 1913 - syn of: Kurtiella compressa (W.H. Dall, 1913) - (MONTACUTIDAE)
- compressa, Catazone compressa (Lindström, 1884 †) - (MURCHISONIIDAE) (FOSSIL)
- compressa, Gervillia compressa Whidborne † - (MYALINIDAE) (FOSSIL)
- compressa, Myalina compressa Snider, 1915 † - (MYALINIDAE) (FOSSIL)
- compressa, Tugonia compressa L.A. Reeve, 1863 - syn of: Tugonia anatina (J.F. Gmelin, 1791) - (MYIDAE)
- compressa, Myadora compressa E.A. Smith, 1881 - (MYOCHAMIDAE)
- compressa, Naccula compressa (J.C. Verco, 1906) - (NACELLIDAE)
- compressa, Nacella compressa A. de Rochebrune & J.F. Mabille, 1889 - syn of: Nacella mytilina (G.S. Helbling, 1779) - (NACELLIDAE)
- compressa, Euspira compressa Waring, 1917 † - (NATICIDAE) (FOSSIL)
- compressa, Striarca compressa Martin, 1883 † - (NOETIIDAE) (FOSSIL)
- compressa, Oriocrassatella compressa P.A. Maxwell, 1964 † - (ORIOCRASSATELLIDAE) (FOSSIL)
- compressa, Orthonota compressa Morris, 1845 † - syn of: Stutchburia compressa (Morris, 1845 †) - (ORTHONOTIDAE) (FOSSIL)
- compressa, Orthonychia compressa Williams & M. Breger, 1916 † - (ORTHONYCHIIDAE) (FOSSIL)
- compressa, Palaeomutela compressa Amalitsky, 1892 † - (PALAEOMUTELIDAE) (FOSSIL)
- compressa, Partula compressa L.A. Reeve, 1850 - (PARTULIDAE)
- compressa, Cymbula compressa (C. Linnaeus, 1758) - (PATELLIDAE)
- compressa, Pedicularia compressa T.A. de M. Monterosato, 1875 - syn of: Pedicularia sicula W.J. Swainson, 1840 - (PEDICULARIIDAE)
- compressa, Phenacolepas compressa (W.H. Pease, 1868) - (PHENACOLEPADIDAE)
- compressa, Rhytimya compressa Ulrich, 1893 † - (PHOLADOMYIDAE) (FOSSIL)
- compressa, Haugia compressa Buckman, 1898 † - syn of: Haugia jugosa (J. de C. Sowerby, 1815 †) - (PHYMATOCERATIDAE) (FOSSIL)
- compressa, Fossarus compressa Klipstein, 1843 † - (PLANAXIDAE) (FOSSIL)
- compressa, Turbonilla compressa J.G. Jeffreys, 1884 - syn of: Turbonilla amoena (T.A. de M. Monterosato, 1878) - (PYRAMIDELLIDAE)
- compressa, Ribeiria compressa R.P. Whitfield, 1886 † - (RIBEIRIIDAE) (FOSSIL)
- compressa, Wanwania compressa T. Kobayashi, 1933 † - (RIBEIRIIDAE) (FOSSIL)
- compressa, Scenella compressa Ulrich & Scofield, 1897 † - (SCENELLIDAE) (FOSSIL)
- compressa, Scrobicularia compressa H.M.D. de Blainville, 1824 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- compressa, Siphonaria compressa B.R. Allanson, 1958 - (SIPHONARIIDAE)
- compressa, Spiniloma compressa (A.V.M.D. D'Orbigny, 1852 †) - (SPINILOMATIDAE) (FOSSIL)
- compressa, Poiretia compressa (A. Mousson, 1859) - (SPIRAXIDAE)
- compressa, Tellina compressa (G.B. Brocchi, 1814) - (TELLINIDAE)
- compressa, Moerella compressa (G.B. Brocchi, 1814) - syn of: Tellina compressa (G.B. Brocchi, 1814) - (TELLINIDAE)
- compressa, Tindaria compressa W.H. Dall, 1908 - (TINDARIIDAE)
- compressa, Tridacna compressa L.A. Reeve, 1862 - syn of: Tridacna maxima (P.F. Röding, 1798) - (TRIDACNIDAE)
- compressa, Turritella compressa Münster, 1841 † - syn of: Geomitra compressa (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- compressa, Microcondylaea compressa (K.T. Menke, 1830) - (UNIONIDAE)
- compressa, Lasmigona compressa (I. Lea, 1829) - (UNIONIDAE)
- compressa, Arsenievinaia compressa V.V. Bogatov & Y.I. Starobogatov, 1996 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- compressa, Beringiana compressa E.M. Sayenko & V.V. Bogatov, 1998 - syn of: Anodonta beringiana (A.T. von Middendorff, 1851) - (UNIONIDAE)
- compressa, Pilsbryoconcha exilis compressa (E.C. Von Martens, 1860) - (UNIONIDAE)
- compressa, Parussuria compressa (A. Hyatt & Smith, 1905 †) - (USSURIIDAE) (FOSSIL)
- compressa, Valvata compressa É.A.A. Locard, 1889 - (VALVATIDAE)
- compressa, Tivela compressa (G.B. II Sowerby, 1851) - (VENERIDAE)
- compressa, Venus compressa G. Montagu, 1808 - syn of: Astarte montagui (L.W. Dillwyn, 1817) - (VENERIDAE)
- compressa, Meretrix compressa A. Römer, 1866 - syn of: Meretrix lamarckii G.P. Deshayes, 1853 - (VENERIDAE)
- compressa, Periglypta compressa Z. Zhuang, 1964 - syn of: Periglypta corbis (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- compressa, Mytilimeria compressa É.A.A. Locard, 1898 - syn of: Lyonsiella compressa J.A. Allen & H. Turner, 1974 - (VERTICORDIIDAE)
- compressa, Vesicomya compressa B. Prashad, 1932 - syn of: Pliocardia indica (E.A. Smith, 1904) - (VESICOMYIDAE)
- compressa, Popovicia compressa (P.S. Pavlovic, 1931 †) - (VIVIPARIDAE) (FOSSIL)
- compressa brevicostata, Cymaclymenia compressa brevicostata Pajchlowa, 1972 † - syn of: Cymaclymenia brevicostata Pajchlowa, 1972 † - (CYMACLYMENIIDAE) (FOSSIL)
- compressa costata, Clymenia compressa costata G.G. Münster, 1840 † - syn of: Cyrtoclymenia costata (G.G. Münster, 1840 †) - (CLYMENIIDAE) (FOSSIL)
- compressa crassa, Astarte compressa crassa W. Leche, 1878 - syn of: Astarte crassa W. Leche, 1878 - (ASTARTIDAE)
- compressa dorsoplana, Cymaclymenia compressa dorsoplana Pajchlowa, 1972 † - syn of: Cymaclymenia dorsoplana Pajchlowa, 1972 † - (CYMACLYMENIIDAE) (FOSSIL)
- compressa subcompressa, Cerigana compressa subcompressa O. Böttger, 1894 - syn of: Albinaria grayana subcompressa (O. Böttger, 1894) - (CLAUSILIIDAE)
- compressicosta, Eucithara compressicosta (O. Böttger, 1895) - (MANGELIIDAE)
- compressicosta, Turbonilla compressicosta Kuster-Wendenburg, 1973 † - (PYRAMIDELLIDAE) (FOSSIL)
- compressidens, Cuna compressidens A.W.B. Powell, 1933 - (CONDYLOCARDIIDAE)
- Compressidens, Genus Compressidens H.A. Pilsbry & B. Sharp, 1897 (PULSELLIDAE)
- Compressidentalium, Genus Compressidentalium T. Habe, 1963 (DENTALIIDAE)
- compressiformis, Aegocrioceras compressiformis Rawson, 1975 † - syn of: Aegocrioceras compressum Rawson, 1975 † - (AEGOCRIOCERATIDAE) (FOSSIL)
- compressilirata, Fulgerca compressilirata N.F. Sohl, 1964 † - (CYSTISCIDAE) (FOSSIL)
- compressimus, Rhomboxiphus compressimus T.A. Okutani, 2005 - (ENTALINIDAE)
- compressirostra, Ostrea compressirostra T. Say, 1824 † - (OSTREIDAE) (FOSSIL)
- compressirostra brucei, Ostrea compressirostra brucei Ward, 1992 - (OSTREIDAE)
- compressirostra geraldjohnsoni, Ostrea compressirostra geraldjohnsoni Ward, 1992 - (OSTREIDAE)
- Compressiscala, syn of: Genus Gregorioiscala A.E.M. Cossmann, 1912 (EPITONIIDAE)
- compressissima, Crassatella compressissima Dufour, 1881 † - (CRASSATELLIDAE) (FOSSIL)
- compressissima, Kotetishvilia compressissima (A.V.M.D. D'Orbigny, 1841 †) - (PULCHELLIIDAE) (FOSSIL)
- compressissima, Subpulchellia compressissima A.V.M.D. D'Orbigny, 1841 † - syn of: Kotetishvilia compressissima (A.V.M.D. D'Orbigny, 1841 †) - (PULCHELLIIDAE) (FOSSIL)
- compressissima, Tellina compressissima G.B. II Sowerby, 1869 - (TELLINIDAE)
- compressiuscula, Eulima compressiuscula A. Garrett - (EULIMIDAE)
- compressiuscula, Lepetella compressiuscula (D.L.G. Karsten, 1849 †) - (LEPETELLIDAE) (FOSSIL)
- compressiuscula, Scurria compressiuscula (D.L.G. Karsten, 1849 †) - (LOTTIIDAE) (FOSSIL)
- compressiusculum, Compressidentalium compressiusculum (M. Boissevain, 1906) - (DENTALIIDAE)
- compressiusculus, Ancylus compressiusculus A. Moquin-Tandon - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- compressivoluta, Flammoconcha compressivoluta (L.A. Reeve, 1852) - (CHAROPIDAE)
- compressivoluta, Flammulina compressivoluta L.A. Reeve, 1852 - syn of: Flammoconcha compressivoluta (L.A. Reeve, 1852) - (CHAROPIDAE)
- Compressoconus, syn of: Genus Igorella Rozanov & al., 1969 † (HELCIONELLIDAE) (FOSSIL)
- compressoides, Melanopsis narzolina compressoides F. Sacco, 1895 † - (MELANOPSIDAE) (FOSSIL)
- compressula, Modiola compressula E.C. Von Martens & K.H.J. Thiele, 1908 - syn of: Brachidontes pharaonis (P. Fischer, 1870) - (MYTILIDAE)
- compressum, Protacanthoceras compressum (Jukes Browne, 1896 †) - (ACANTHOCERATIDAE) (FOSSIL)
- compressum, Amphicyrtoceras compressum (J. de C. Sowerby, 1839) † - (ACLEISTOCERATIDAE) (FOSSIL)
- compressum, Acrochordiceras compressum L. Waagen, 1895 † - syn of: Wasatchites distractus (L. Waagen, 1895 †) - (ACROCHORDICERATIDAE) (FOSSIL)
- compressum, Aegocrioceras compressum Rawson, 1975 † - (AEGOCRIOCERATIDAE) (FOSSIL)
- compressum, Williamsoceras compressum Flower, 1976 † - (ALLOTRIOCERATIDAE) (FOSSIL)
- compressum, Tropaeum subsimbirskense compressum (Sinzow, 1925 †) - (ANCYLOCERATIDAE) (FOSSIL)
- compressum, Pericarinoceras compressum J.K. Zhao & al., 1978 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- compressum, Leptogyroceras compressum J.K. Zhao & al., 1978 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- compressum, Periptychoceras compressum J.K. Zhao & al., 1978 † - (ARAXOCERATIDAE) (FOSSIL)
- compressum, Jinjiangoceras compressum Zheng & X.T. Ma, 1982 † - (ARAXOCERATIDAE) (FOSSIL)
- compressum, Truempyceras compressum Brühwiler & al., 2012 † - (ARCTOCERATIDAE) (FOSSIL)
- compressum, Kazakhoceras compressum Liang, 1957 † - syn of: Kazakhoceras yanshini Ruzhentsev, 1947 † - (BERKHOCERATIDAE) (FOSSIL)
- compressum, Borissiakoceras compressum Cobban, 1961 † - (BINNEYITIDAE) (FOSSIL)
- compressum, Parabrancoceras compressum (M. Collignon, 1949 †) - (BRANCOCERATIDAE) (FOSSIL)
- compressum, Salpingostoma compressum (d''Eichwald, 1840 †) - (BUCANIIDAE) (FOSSIL)
- compressum, Laevicardium compressum W.H. Dall, 1900 † - (CARDIIDAE) (FOSSIL)
- compressum, Vexillum compressum G.B. II Sowerby, 1828 - syn of: Vexillum citrinum compressa (G.B. II Sowerby, 1828) - (COSTELLARIIDAE)
- compressum, Menuthiocrioceras compressum (Skwarko & Thieuloy, 1989 †) - (CRIOCERATITIDAE) (FOSSIL)
- compressum, Umsinenoceras compressum F.A. Medina & A.C. Riccardi, 2006 † - (DESMOCERATIDAE) (FOSSIL)
- compressum, Ophiceras compressum (Griesbach 1880 †) - (DIENEROCERATIDAE) (FOSSIL)
- compressum, Ectenoceras compressum Ulrich & al., 1943 † - (ELLESMEROCERATIDAE) (FOSSIL)
- compressum, Cameroceras compressum Gil, 1988 † - (ENDOCERATIDAE) (FOSSIL)
- compressum, Eurydesma compressum Reed, 1932 † - (EURYDESMATIDAE) (FOSSIL)
- compressum, Scutus compressum (G.P. Deshayes, 1861 †) - (FISSURELLIDAE) (FOSSIL)
- compressum, Macroschisma compressum A. Adams, 1851 - (FISSURELLIDAE)
- compressum, Acutimitoceras compressum (Moore 1928 †) - (GATTENDORFIIDAE) (FOSSIL)
- compressum, Anagaudryceras compressum Y. Shigeta & S. Nishimura, 2014 † - (GAUDRYCERATIDAE) (FOSSIL)
- compressum, Ludwigia compressum Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- compressum, Leptaleoceras compressum Monestier, 1934 † - (HILDOCERATIDAE) (FOSSIL)
- compressum, Knemiceras compressum A. Hyatt, 1903 † - (KNEMICERATIDAE) (FOSSIL)
- compressum, Labeceras compressum Whitehouse, 1926 † - (LABECERATIDAE) (FOSSIL)
- compressum, Leurotrochoceras compressum Foerste, 1930 † - (LECHRITROCHOCERATIDAE) (FOSSIL)
- compressum, Propilidium compressum J.G. Jeffreys, 1881 - (LEPETIDAE)
- compressum, Oistoceras compressum Smith & Tipper, 1996 † - (LIPAROCERATIDAE) (FOSSIL)
- compressum, Proscutum compressum (G.P. Deshayes, 1861 †) - (LOTTIIDAE) (FOSSIL)
- compressum, Unicardium compressum Woods † - (MACTROMYIDAE) (FOSSIL)
- compressum, Nitanoceras compressum Tozer, 1994 † - (MEGAPHYLLITIDAE) (FOSSIL)
- compressum, Cymatonota compressum Ulrich, 1894 † - (MODIOMORPHIDAE) (FOSSIL)
- compressum, Aganides compressum Moore, 1928 † - syn of: Acutimitoceras compressum (Moore 1928 †) - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- compressum, Discophiceras compressum Spath, 1935 † - (OPHICERATIDAE) (FOSSIL)
- compressum, Orthonychia compressum Girty, 1910 † - (ORTHONYCHIIDAE) (FOSSIL)
- compressum, Strigogoniatites compressum J.K. Zhao & al., 1978 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- compressum, Periploma compressum D'Orbigny, 1846 - (PERIPLOMATIDAE)
- compressum, Phragmoceras hoyi compressum R.P. Whitfield, 1878 † - (PHRAGMOCERATIDAE) (FOSSIL)
- compressum, Platyceras compressum A.H. Clarke & Swartz, 1913 † - (PLATYCERATIDAE) (FOSSIL)
- compressum, Platyceras compressum Jhaveri, 1969 † - (PLATYCERATIDAE) (FOSSIL)
- compressum, Platyceras compressum Nettleroth † - (PLATYCERATIDAE) (FOSSIL)
- compressum, Lunanoceras compressum C. Chen & Z. Qi, 1979 † - (PLECTRONOCERATIDAE) (FOSSIL)
- compressum, Paraevlanoceras compressum P.A. Zhuravleva, 1972 † - syn of: Evlanoceras evlanense (Nalivkin, 1947 †) - (POLYELASMOCERATIDAE) (FOSSIL)
- compressum, Monneticeras compressum Brühwiler & Bucher, 2012 † - (PROPTYCHITIDAE) (FOSSIL)
- compressum, Cotteroceras compressum (Ulrich & Foerste, 1935 †) - (PROTEROCAMEROCERATIDAE) (FOSSIL)
- compressum, Phaneroceras compressum (A. Hyatt, 1891 †) - (PSEUDOPARALEGOCERATIDAE) (FOSSIL)
- compressum, Ceratopea compressum (R.P. Whitfield, 1886 †) - (RAPHISTOMATIDAE) (FOSSIL)
- compressum, Pisidium compressum T. Prime, 1852 - (SPHAERIIDAE)
- compressum, Musculium compressum A.T. von Middendorff, 1851 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- compressum, Sphaerium compressum A. Mousson, 1887 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- compressum, Aulatornoceras compressum Grüneberg, 1925 † - (TORNOCERATIDAE) (FOSSIL)
- compressum, Tornoceras compressum (A.H. Clarke, 1899 †) - (TORNOCERATIDAE) (FOSSIL)
- compressum, Wichitoceras compressum Ulrich & al., 1942 † - (TROCHOLITIDAE) (FOSSIL)
- compressum, Paravascoceras compressum Barber, 1957 † - syn of: Vascoceras proprium Reyment, 1954 † - (VASCOCERATIDAE) (FOSSIL)
- compressurn, Phragmoccras compressurn Portlock, 1843 † - syn of: Faberoceras cinereum (C.H. Blake, 1882 †) - (APSIDOCERATIDAE) (FOSSIL)
- compressus, Sosiocrimites compressus Liang, 1982 † - (ADRIANITIDAE) (FOSSIL)
- compressus, Ammonites compressus A.H.E. Beyrich, 1837 † - syn of: Gyroceratites gracilis H.G. Bronn, 1835 † - (AMMONITIDA (unassigned)) (FOSSIL)
- compressus, Arcestes compressus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- compressus, Brayardites compressus Brühwiler & al., 2010 † - (ARCTOCERATIDAE) (FOSSIL)
- compressus, Argonauta compressus H.M.D. de Blainville, 1826 - syn of: Argonauta argo C. Linnaeus, 1758 - (ARGONAUTIDAE)
- compressus, Baculites compressus T. Say, 1920 † - (BACULITIDAE) (FOSSIL)
- compressus, Belemnites compressus H.M.D. de Blainville, 1827 † - (BELEMNITELLIDAE) (FOSSIL)
- compressus, Bellerophon compressus C.L.F. von Sandberger & C.L.F. von Sandberger, 1853 † - (BELLEROPHONTIDAE) (FOSSIL)
- compressus, Phragmolites compressus T.A. Conrad, 1838 † - (BUCANIIDAE) (FOSSIL)
- compressus, Tremanotus compressus Lindström, 1884 † - (BUCANIIDAE) (FOSSIL)
- compressus, Capulus compressus E.A. Smith, 1891 - (CAPULIDAE)
- compressus, Pileopsis compressus G.A. Goldfuss, 1832 † - syn of: Platyceras compressus (G.A. Goldfuss, 1832 †) - (CAPULIDAE) (FOSSIL)
- compressus, Planulites compressus G.G. Münster, 1832 † - syn of: Cymaclymenia compressa (G.G. Münster, 1832 †) - (CLYMENIIDAE) (FOSSIL)
- compressus, Conus compressus G.B. II Sowerby, 1866 - (CONIDAE)
- compressus, Crestjahitus compressus A.V. Sysoev, 1968 † - (CRESTJAHITIDAE) (FOSSIL)
- compressus, Demarezites compressus Liang, 1981 † - (CYCLOLOBIDAE) (FOSSIL)
- compressus, Donax compressus J.B.P.A. Lamarck, 1800 - (DONACIDAE)
- compressus, Paratirolites compressus Ehiro, 1996 † - (DZHULFITIDAE) (FOSSIL)
- compressus, Euphemites compressus Elias, 1958 † - (EUPHEMITIDAE) (FOSSIL)
- compressus, Subflemingites compressus Brühwiler & al., 2010 † - (FLEMINGITIDAE) (FOSSIL)
- compressus, Flemingites compressus L. Waagen, 1895 † - syn of: Flemingites flemingianus (de Koninck, 1863 †) - (FLEMINGITIDAE) (FOSSIL)
- compressus, Gymnites compressus Tozer, 1994 † - (GYMNITIDAE) (FOSSIL)
- compressus, Hamites compressus (Sowerby, 1814 †) - (HAMITIDAE) (FOSSIL)
- compressus, Pleurobelus compressus Stahl, 1824 † - (HASTITIDAE) (FOSSIL)
- compressus, Cordillerites compressus Mathews, 1929 † - (HEDENSTROEMIIDAE) (FOSSIL)
- compressus, Epihoplites compressus (C.F. Parona & Bonarelli, 1896 †) - (HOPLITIDAE) (FOSSIL)
- compressus, Pygmaeoconus compressus (E.F.R.K. Koken & J. Perner, 1925 †) - (HYPSELOCONIDAE) (FOSSIL)
- compressus, Hypseloconus compressus Ulrich & al., 1931 † - (HYPSELOCONIDAE) (FOSSIL)
- compressus, Heterochiton compressus (Scalia, 1903 †) - (ISCHNOCHITONIDAE) (FOSSIL)
- compressus, Nevadaphyllites compressus Guex, 1980 † - (JURAPHYLLITIDAE) (FOSSIL)
- compressus, Marshallites compressus E. Matsumoto, 1955 † - (KOSSMATICERATIDAE) (FOSSIL)
- compressus, Hamitoides compressus Spath, 1925 † - (LABECERATIDAE) (FOSSIL)
- compressus, Tecticrater compressus (H.H. Suter, 1908) - (LEPETELLIDAE)
- compressus, Megaphyllites compressus Shevyrev, 1995 † - (MEGAPHYLLITIDAE) (FOSSIL)
- compressus, Hebeisenites compressus Brayard & Bucher, 2008 † - (MELAGATHICERATIDAE) (FOSSIL)
- compressus, Paranannites compressus Smith, 1932 † - syn of: Paranannites aspenensis A. Hyatt & Smith, 1905 † - (MELAGATHICERATIDAE) (FOSSIL)
- compressus, Choromytilus compressus L.A. Reeve, 1858 - syn of: Choromytilus chorus (Molina, 1782) - (MYTILIDAE)
- compressus, Mytilus compressus L.A. Reeve, 1858 - syn of: Choromytilus chorus (Molina, 1782) - (MYTILIDAE)
- compressus, Dicosmos compressus Tong & Erwin, 2001 † - (NATICOPSIDAE) (FOSSIL)
- compressus, Holcoptychites compressus H.A. Leanza & Wiedmann, 1980 † - syn of: Holcoptychites agrioensis C.S. Weaver, 1931 † - (NEOCOMITIDAE) (FOSSIL)
- compressus, Ecculiomphalus compressus R.P. Whitfield, 1897 † - (OPHILETIDAE) (FOSSIL)
- compressus, Palaeacmaea compressus E.F.R.K. Koken & J. Perner, 1925 † - syn of: Pygmaeoconus compressus (E.F.R.K. Koken & J. Perner, 1925 †) - (PALAEACMAEIDAE) (FOSSIL)
- compressus, Perrinites compressus Haniel, 1915 † - syn of: Metaperrinites subcumminsi (Haniel 1915 †) - (PERRINITIDAE) (FOSSIL)
- compressus, Gyraulus compressus (F.W. Hutton, 1849) - (PLANORBIDAE)
- compressus, Planorbis compressus A. Michaud, 1831 - syn of: Anisus hypocyrtus G. Servain, 1888 - (PLANORBIDAE)
- compressus, Platyceras compressus (G.A. Goldfuss, 1832 †) - (PLATYCERATIDAE) (FOSSIL)
- compressus, Platyceras compressus T.A. Conrad 1840 † - (PLATYCERATIDAE) (FOSSIL)
- compressus, Pseudocraspedites compressus Igolnikov, 2014 † - (POLYPTYCHITIDAE) (FOSSIL)
- compressus, Prionolobus compressus (L. Waagen, 1895 †) - (PROPTYCHITIDAE) (FOSSIL)
- compressus, Vavilovites compressus Vavilov, 1968 † - (PROPTYCHITIDAE) (FOSSIL)
- compressus, Qinglongites compressus Zheng, 1981 † - (PSEUDOHALORITIDAE) (FOSSIL)
- compressus, Phrixgnathus compressus H.H. Suter, 1909 - (PUNCTIDAE)
- compressus, Exomilus compressus A.E. Fedosov & N. Puillandre, 2012 - (RAPHITOMIDAE)
- compressus, Calyptraphorus compressus (T.H. Aldrich, 1894 †) - (ROSTELLARIIDAE) (FOSSIL)
- compressus, Shastites compressus A. Hyatt & Smith, 1905 † - (SANDLINGITIDAE) (FOSSIL)
- compressus, Jeletzkytes compressus (F.A. Roemer, 1841 †) - (SCAPHITIDAE) (FOSSIL)
- compressus, Schizodus compressus B. Rogers, 1900 † - (SCHIZODIDAE) (FOSSIL)
- compressus, Schizodus compressus L. Waagen, 1881 † - (SCHIZODIDAE) (FOSSIL)
- compressus, Clavinautilus compressus J.K. Zhao & al., 1978 † - (TAINOCERATIDAE) (FOSSIL)
- compressus, Tapashanites compressus J.K. Zhao & al., 1978 † - (TAPASHANITIDAE) (FOSSIL)
- compressus, Turbo compressus W. Wood, 1828 - syn of: Annularia lincina (C. Linnaeus, 1758) - (TURBINIDAE)
- compressus, Unio compressus P.M. Heude, 1877 - syn of: Ptychorhynchus murinum (P.M. Heude, 1883) - (UNIONIDAE)
- compressus, Aegopis compressus (E.A. Rossmässler, 1836) - (ZONITIDAE)
- compressus japonicus, Planorbis compressus japonicus E.C. Von Martens, 1867 - syn of: Anisus japonicus (E.C. Von Martens, 1867) - (PLANORBIDAE)
- compressus robinsoni, Baculites compressus robinsoni Cobban, 1962 † - (BACULITIDAE) (FOSSIL)
- comprimatum, Dentalium comprimatum H.P. Plate, 1908 - syn of: Compressidens comprimatum (H.P. Plate, 1908) - (DENTALIIDAE)
- comprimatum, Compressidens comprimatum (H.P. Plate, 1908) - (PULSELLIDAE)
- comprimatum, Compressidens comprimatum H.P. Plate, 1908 - syn of: Compressidens comprimatum (H.P. Plate, 1908) - (PULSELLIDAE)
- comprimus, Hoploscaphites comprimus Owen, 1852 † - (SCAPHITIDAE) (FOSSIL)
- compsa, Ancistrobasis compsa J.C. Melvill, 1904 - (ANCISTROBASIDAE)
- compsa, Clavatula compsa J. Gardner, 1937 † - (CLAVATULIDAE) (FOSSIL)
- compsa, Eulima compsa A.E. Verrill & K.J. Bush, 1900 - (EULIMIDAE)
- compsa, Divaricella compsa W.H. Dall, 1903 † - (LUCINIDAE) (FOSSIL)
- compsa, Mitra compsa M. Smith, 1938 - syn of: Subcancilla candida (L.A. Reeve, 1845) - (MITRIDAE)
- compsa, Litorhadia compsa (W.M. Gabb, 1860 †) - (NUCULANIDAE) (FOSSIL)
- compsa, Calorhadia compsa † - (NUCULANIDAE) (FOSSIL)
- compsa, Turbonilla compsa K.J. Bush, 1899 - (PYRAMIDELLIDAE)
- compsa, Daphnella compsa (R.B. Watson, 1881) - (RAPHITOMIDAE)
- compsa, Onoba compsa P. Bartsch, 1987 - (RISSOIDAE)
- compsa, Cingula compsa (E.A. Smith, 1890) - (RISSOIDAE)
- compsa, Rissoa compsa E.A. Smith, 1890 - syn of: Cingula compsa (E.A. Smith, 1890) - (RISSOIDAE)
- compsa, Strobiligera compsa (W.H. Dall, 1927) - (TRIPHORIDAE)
- compsa, Inella compsa (W.H. Dall, 1927) - syn of: Strobiligera compsa (W.H. Dall, 1927) - (TRIPHORIDAE)
- compsacosta, Mangelia compsacosta J. Gardner, 1937 † - (MANGELIIDAE) (FOSSIL)
- compsensis, Ptychohamulina compsensis J.J. Vermeulen, 2005 † - (ANAHAMULINIDAE) (FOSSIL)
- compsensis, Pseudovaldedorsella compsensis (Kilian, 1910 †) - (HOLCODISCIDAE) (FOSSIL)
- Compsodrillia, Genus Compsodrillia W.P. Woodring, 1928 (PSEUDOMELATOMIDAE)
- Compsomyax, Genus Compsomyax C.C. Stewart, 1930 (VENERIDAE)
- Compsonema, Genus Compsonema Gordon & Yochelson, 1983 † (PLATYCERATIDAE) (FOSSIL)
- compsospira, Pleurotoma compsospira P. Dautzenberg & H. Fischer, 1896 - syn of: Typhlomangelia nivalis (S.L. Lovén, 1846) - (TURRIDAE)
- Compsoteuthis, syn of: Genus Abraliopsis L.M.A.O.E. Joubin, 1896 (ENOPLOTEUTHIDAE)
- compsum, Taramelliceras compsum (Oppel, 1863 †) - (OPPELIIDAE) (FOSSIL)
- compta, Partulina dwightii compta W.H. Pease, 1869 - (ACHATINELLIDAE)
- compta, Cardita compta R. Tate, 1886 † - (CARDITIDAE) (FOSSIL)
- compta, Hemitrochus compta (J. Gundlach, 1857) - (CEPOLIDAE)
- compta, Lienardia compta (L.A. Reeve, 1845) - (CLATHURELLIDAE)
- compta, Etremopsis compta A.W.B. Powell, 1942 † - (CLATHURELLIDAE) (FOSSIL)
- compta, Liratilia compta A.W.B. Powell, 1930 - (COLUMBELLIDAE)
- compta, Mitrella compta W.H. Webster, 1906 - syn of: Pyreneola pleurotomoides (H.A. Pilsbry, 1895) - (COLUMBELLIDAE)
- compta, Cribrarula cumingii compta (W.H. Pease, 1860) - (CYPRAEIDAE)
- compta, Doris compta W.H. Pease, 1871 - (DORIDIDAE)
- compta, Splendrillia compta P.J. Fallon, 2016 - (DRILLIIDAE)
- compta, Emarginula compta T. Habe, 1953 - (FISSURELLIDAE)
- compta, Scintilla compta G.B. Sowerby, 1897 - (GALEOMMATIDAE)
- compta, Tropidostropha compta Batten, 1966 † - (GOSSELETINIDAE) (FOSSIL)
- compta, Neilo compta (G.B. III Sowerby, 1904) - (MALLETIIDAE)
- compta, Marita compta (A. Adams & G.F. Angas, 1864) - (MANGELIIDAE)
- compta, Eucithara compta A. Adams & G.F. Angas, 1864 - syn of: Marita compta (A. Adams & G.F. Angas, 1864) - (MANGELIIDAE)
- compta, Gaza compta L.R.L. Simone & C.M. Cunha, 2006 - (MARGARITIDAE)
- compta, Mitra compta A. Adams, 1853 - syn of: Vexillum modestum (L.A. Reeve, 1845) - (MITRIDAE)
- compta, Goniophora compta Kríž, 2008 † - (MODIOMORPHIDAE) (FOSSIL)
- compta, Nassa compta A. Adams, 1852 - syn of: Nassarius comptus (A. Adams, 1852) - (NASSARIIDAE)
- compta, Nuculana compta G.B. III Sowerby, 1904 - syn of: Neilo compta (G.B. III Sowerby, 1904) - (NUCULANIDAE)
- compta, Nucula compta Gould, 1834 † - (NUCULIDAE) (FOSSIL)
- compta, Nucula compta G.A. Goldfuss, 1837 † - (NUCULIDAE) (FOSSIL)
- compta, Olivella compta (F.P. Marrat, 1871) - (OLIVELLIDAE)
- compta, Tricolia compta A.A. Gould, 1855 - syn of: Eulithidium comptum (A.A. Gould, 1855) - (PHASIANELLIDAE)
- compta, Phasianella compta A.A. Gould, 1855 - syn of: Eulithidium comptum (A.A. Gould, 1855) - (PHASIANELLIDAE)
- compta, Euselenops compta L.S.R. Bergh, 1897 - syn of: Euselenops luniceps (G.L.C.F.D. Cuvier, 1816) - (PLEUROBRANCHAEIDAE)
- compta, Gari compta G.P. Deshayes, 1855 - syn of: Gari livida (J.B.P.A. Lamarck, 1818) - (PSAMMOBIIDAE)
- compta, Parodostomia compta (J.W. Brazier, 1877) - (PYRAMIDELLIDAE)
- compta, Powelliphanta gilliesi compta (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- compta, Seguenzia compta B.A. Marshall, 1983 - (SEGUENZIIDAE)
- compta, Semele compta (L.A. Reeve, 1853) - (SEMELIDAE)
- compta, Tellina compta A.A. Gould, 1850 - syn of: Tellina clathrata (G.P. Deshayes, 1835) - (TELLINIDAE)
- compta, Pleurotoma compta L.A. Reeve, 1845 - syn of: Lienardia compta (L.A. Reeve, 1845) - (TURRIDAE)
- compta, Chione compta (W.J. Broderip, 1835) - (VENERIDAE)
- compta, Dosinia compta S.L. Lovén, 1846 - syn of: Dosinia lupina (C. Linnaeus, 1758) - (VENERIDAE)
- compta, Venus compta W.J. Broderip, 1835 - syn of: Chione compta (W.J. Broderip, 1835) - (VENERIDAE)
- compta, Thylaeodus compta P.P. Carpenter, 1864 - (VERMETIDAE)
- compta emmae, Lienardia compta emmae J.C. Melvill & R. Standen, 1895 - (CLATHURELLIDAE)
- compta iolabiata, Hemitrochus compta iolabiata C.G. Aguayo & M.L. Jaume, 1954 - (CEPOLIDAE)
- Comptella, Genus Comptella H.J. Finlay, 1927 (MURICIDAE)
- comptensis, Pleurotomaria comptensis Moore † - (PLEUROTOMARIIDAE) (FOSSIL)
- comptessi, Thalotia comptessi T. Iredale, 1931 - (TROCHIDAE)
- compticarinatus, Tropidodiscus compticarinatus E.G. Linsley, 1968 † - (TROPIDODISCIDAE) (FOSSIL)
- Comptio, Genus Comptio Y.Y. Cai & J.Y. Liu, 1978 (UNIONIDAE)
- comptocostosum, Leioceras comptocostosum D.M. Chandler & P. Callomon, 2009 † - (GRAPHOCERATIDAE) (FOSSIL)
- comptoni, Xenodiscus comptoni Diener, 1913 † - syn of: Glyptophiceras sinuatum (L. Waagen, 1895 †) - (MEEKOCERATIDAE) (FOSSIL)
- comptonii, Notocypraea comptonii (J.E. Gray, 1847) - (CYPRAEIDAE)
- comptonii casta, Notocypraea comptonii casta (F.A. Schilder & R.H. Summers, 1963) - (CYPRAEIDAE)
- comptonii mayi, Notocypraea comptonii mayi (R.H. Beddome, 1898) - (CYPRAEIDAE)
- comptonii trenberthae, Notocypraea comptonii trenberthae W.P. Trenberth, 1961 - (CYPRAEIDAE)
- comptonii wilkinsi, Notocypraea comptonii wilkinsi R.J. Griffiths, 1959 - (CYPRAEIDAE)
- Comptopallium, syn of: Genus Decatopecten G.B. Sowerby, 1839 (PECTINIDAE)
- comptulus, Cyclopecten comptulus H.H. Dijkstra & P. Maestrati, 2013 - (PROPEAMUSSIIDAE)
- comptum, Calliostoma comptum (A. Adams, 1855) - (CALLIOSTOMATIDAE)
- comptum, Vexillum modestum comptum (C.B. Adams, 1853) - (COSTELLARIIDAE)
- comptum, Leioceras comptum (Reinecke, 1818 †) - (GRAPHOCERATIDAE) (FOSSIL)
- comptum, Eulithidium comptum (A.A. Gould, 1855) - (PHASIANELLIDAE)
- comptum, Cymatium comptum A. Adams, 1854 - syn of: Monoplex comptus (A. Adams, 1855) - (RANELLIDAE)
- comptum, Tainoceras comptum Reed, 1944 † - (TAINOCERATIDAE) (FOSSIL)
- comptum amphiatlanticum, Monoplex comptum amphiatlanticum F. García-Talavera & J.B. Vera, 2003 - syn of: Monoplex comptus (A. Adams, 1855) - (RANELLIDAE)
- comptus, Acteon comptus Á. Valdés, 2008 - (ACTEONIDAE)
- comptus, Aeneator comptus (H.J. Finlay, 1924) - (BUCCINIDAE)
- comptus, Ziziphinus comptus A. Adams, 1855 - syn of: Calliostoma comptum (A. Adams, 1855) - (CALLIOSTOMATIDAE)
- comptus, Protoceras comptus W.A. Marsh, 1894 † - (CERATITIDA (UNASSIGNED)) (FOSSIL)
- comptus, Rhinoclavis comptus G.B. III Sowerby, 1914 - syn of: Rhinoclavis aspera (C. Linnaeus, 1758) - (CERITHIIDAE)
- comptus, Epidromus comptus G.B. Sowerby, 1874 - syn of: Colubraria tenera (J.E. Gray, 1839) - (COLUBRARIIDAE)
- comptus, Conus comptus A.A. Gould, 1853 - syn of: Chelyconus purpurascens (G.B. II Sowerby, 1833) - (CONIDAE)
- comptus, Conus comptus A. Adams, 1855 - syn of: Floraconus papilliferus (G.B. I Sowerby, 1834) - (CONIDAE)
- comptus, Hipponix comptus G.P. Deshayes, 1861 † - (HIPPONICIDAE) (FOSSIL)
- comptus, Ischnochiton comptus (A.A. Gould, 1859) - (ISCHNOCHITONIDAE)
- comptus, Haploplax comptus (A.A. Gould, 1859) - syn of: Ischnochiton comptus (A.A. Gould, 1859) - (ISCHNOCHITONIDAE)
- comptus, Leptochiton comptus A.A. Gould, 1859 - syn of: Ischnochiton comptus (A.A. Gould, 1859) - (LEPTOCHITONIDAE)
- comptus, Guraleus comptus A. Adams & G.F. Angas, 1864 - syn of: Marita compta (A. Adams & G.F. Angas, 1864) - (MANGELIIDAE)
- comptus, Modiolus comptus (G.B. III Sowerby, 1915) - (MYTILIDAE)
- comptus, Nassarius comptus (A. Adams, 1852) - (NASSARIIDAE)
- comptus, Ochmazochiton comptus Hoare & Smith, 1984 † - (OCHMAZOCHITONIDAE) (FOSSIL)
- comptus, Parallelodon comptus C. Gemmellaro, 1896 † - (PARALLELODONTIDAE) (FOSSIL)
- comptus, Pecten comptus J.B.M. Dana, 1847 † - syn of: Fletcheripecten laticostatus C.O. Waterhouse, 1982 † - (PECTINIDAE) (FOSSIL)
- comptus, Fossarus comptus W.P. Woodring, 1928 - syn of: Parviturbo comptus (W.P. Woodring, 1928) - (PLANAXIDAE)
- comptus, Monoplex comptus (A. Adams, 1855) - (RANELLIDAE)
- comptus, Cymatium comptus A. Adams, 1855 - syn of: Monoplex comptus (A. Adams, 1855) - (RANELLIDAE)
- comptus, Parviturbo comptus (W.P. Woodring, 1928) - (SKENEIDAE)
- comptus, Parviturboides comptus W.P. Woodring, 1928 - syn of: Parviturbo comptus (W.P. Woodring, 1928) - (TORNIDAE)
- comptus, Turritella comptus G.P. Deshayes, 1861 † - (TURRITELLIDAE) (FOSSIL)
- comptus, Unio comptus G.P. Deshayes, 1875 - syn of: Trapezoideus exolescens comptus (G.P. Deshayes, 1875) - (UNIONIDAE)
- comptus, Trapezoideus exolescens comptus (G.P. Deshayes, 1875) - (UNIONIDAE)
- comptus amphiatlanticus, Cymatium comptus amphiatlanticus F. García-Talavera & J.B. Vera, 2002 - syn of: Monoplex comptus (A. Adams, 1855) - (RANELLIDAE)
- comptus excellens, Nassarius comptus excellens J.T. Kuroda & T. Habe, 1961 - syn of: Nassarius excellens (J.T. Kuroda & T. Habe, 1961) - (NASSARIIDAE)
- comptus tateyamensis, Nassarius comptus tateyamensis J.T. Kuroda, 1929 - syn of: Nassarius tateyamensis J.T. Kuroda, 1929 - (NASSARIIDAE)
- compuncta, Coccopigya compuncta (J. Marwick, 1931 †) - (COCCULINIDAE) (FOSSIL)
- compunctata, Venus compunctata J.H.F. Link, 1807 - syn of: Tapes literatus (C. Linnaeus, 1758) - (VENERIDAE)
- compunctum, Vasticardium compunctum T. Kira, 1959 - (CARDIIDAE)
- computata, Actinonaias computata (J.C.H. Crosse & P.H. Fischer, 1893) - (UNIONIDAE)
- comriei, Papuina brumeriensis comriei A. Adams & G.F. Angas, 1864 - (CAMAENIDAE)
- comstockense, Mccluskiceras comstockense Kröger & Landing, 2008 † - (PROTEROCAMEROCERATIDAE) (FOSSIL)
- comta, Armina comta (L.S.R. Bergh, 1880) - (ARMINIDAE)
- comta, Doris comta N.B. Eales - (DORIDIDAE)
- comta, Larissamya comta P. G. Oliver, Skryabin & Al-Ghunaim, 2017 - (MONTACUTIDAE)
- comta, Lamellinucula comta (G.A. Goldfuss, 1837 †) - (NUCULIDAE) (FOSSIL)
- comta, Dosinia comta G.B. Sowerby, 1846 - syn of: Dosinia glauca (L.A. Reeve, 1850) - (VENERIDAE)
- comta, Dosinia comta S.L. Lovén, 1846 - syn of: Dosinia lupina (C. Linnaeus, 1758) - (VENERIDAE)
- comtessei, Nassa comtessei T. Iredale, 1929 - syn of: Nassarius conoidalis (G.P. Deshayes, 1832) - (NASSARIIDAE)
- comtessei, Nassarius comtessei T. Iredale, 1929 - syn of: Nassarius conoidalis (G.P. Deshayes, 1832) - (NASSARIIDAE)
- comtessei, Prothalotia comtessei T. Iredale, 1931 - syn of: Calliostoma fragum (R.A. Philippi, 1848) - (TROCHIDAE)
- comtessi, Calthalotia comtessi (T. Iredale, 1931) - (TROCHIDAE)
- comteti, Dendronotus comteti Á. Valdés & P. Bouchet, 1998 - (DENDRONOTIDAE)
- Comtopallium, syn of: Genus Decatopecten G.B. Sowerby, 1839 (PECTINIDAE)
- comtum, Mimimitoceras comtum W. Korn, Bockwinkel & Ebbighausen, 2015 † - (PRIONOCERATIDAE) (FOSSIL)
- Comus, Subgenus Tivela (Comus) L.R. Cox, 1930 (VENERIDAE)
- comythophora, Josephinella comythophora (J.R. Bourguignat, 1857) - (HELICIDAE)
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