- chkalovi, Aristoceras chkalovi (Ruzhentsev, 1940 †) - (THALASSOCERATIDAE) (FOSSIL)
- Chlamvs, syn of: Genus Chlamys P.F. Röding, 1798 (PECTINIDAE)
- Chlamydarion, Genus Chlamydarion J.J. Van Mol, 1970 (UROCYCLIDAE)
- Chlamydea, syn of: Genus Semilimax A.E.R. Agassiz, 1845 (VITRINIDAE)
- Chlamydella, Genus Chlamydella T. Iredale, 1929 (CYCLOCHLAMYDIDAE)
- CHLAMYDEPHORIDAE Cockerell, 1935 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-RHYTIDOIDEA [Superfamily])
- Chlamydephorus, Genus Chlamydephorus W.G. Binney, 1879 (CHLAMYDEPHORIDAE)
- Chlamydina, syn of: Genus Chlamys P.F. Röding, 1798 (PECTINIDAE)
- Chlamydochiton, syn of: Genus Amicula J.E. Gray, 1847 (MOPALIIDAE)
- Chlamydoconcha, Genus Chlamydoconcha W.H. Dall, 1884 (GALEOMMATIDAE)
- CHLAMYDOCONCHIDAE - syn of Family: GALEOMMATIDAE
- Chlamydoglyphis, syn of: Genus Lucapinella H.A. Pilsbry, 1890 (FISSURELLIDAE)
- chlamydoides, Lopha chlamydoides Martin, 1922 † - (OSTREIDAE) (FOSSIL)
- Chlamydolimax, syn of: Genus Drilolestes W.A. Lindholm, 1925 (TRIGONOCHLAMYDIDAE)
- Chlamydophorus, syn of: Genus Chlamydephorus W.G. Binney, 1879 (CHLAMYDEPHORIDAE)
- Chlamyla, syn of: Genus Chlamylla L.S.R. Bergh, 1886 (FLABELLINIDAE)
- Chlamylla, Genus Chlamylla L.S.R. Bergh, 1886 (FLABELLINIDAE)
- Chlamys, Genus Chlamys P.F. Röding, 1798 (PECTINIDAE)
- Chlanidota, Genus Chlanidota E.C. Von Martens, 1878 (BUCCINIDAE)
- Chlanidotella, Subgenus Chlanidota (Chlanidotella) K.H.J. Thiele, 1929 (BUCCINIDAE)
- Chlanificula, Genus Chlanificula A. Powell, 1958 (BUCCINIDAE)
- Chlathrus, Genus Chlathrus Oken, 1815 † (GASTROPODA INCERTAE SEDIS) (FOSSIL)
- chlidanos, Leptotrophon chlidanos R. Houart, 2001 - (MURICIDAE)
- chloantha, Amuropaludina chloantha (J.R. Bourguignat, 1860) - (VIVIPARIDAE)
- chloanthes, Marionia chloanthes L.S.R. Bergh, 1902 - (TRITONIIDAE)
- chloeae, Miniaceoliva lamberti chloeae E.J. Petuch & R.F. Myers, 2014 - (OLIVIDAE)
- chlora, Corbicula chlora P.M. Pallary, 1909 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- Chloraea, Genus Chloraea J.A. Albers, 1850 (BRADYBAENIDAE)
- chlorata, Katostoma chlorata R.T. Lowe, 1855 - syn of: Leptaxis nivosa (G.B. I Sowerby, 1824) - (HYGROMIIDAE)
- chlorata, Oxymeris chlorata (J.B.P.A. Lamarck, 1822) - (TEREBRIDAE)
- chlorata, Terebra chlorata J.B.P.A. Lamarck, 1822 - syn of: Oxymeris chlorata (J.B.P.A. Lamarck, 1822) - (TEREBRIDAE)
- Chlorea, syn of: Genus Chloraea J.A. Albers, 1850 (BRADYBAENIDAE)
- Chlorilis, Genus Chlorilis N.H. Odhner, 1917 (BRADYBAENIDAE)
- chlorina, Calyptraea chlorina A.A. Gould, 1846 - (CALYPTRAEIDAE)
- chlorina, Nerita chlorina J.H.F. Link, 1807 - syn of: Neritina virginea (C. Linnaeus, 1758) - (NERITIDAE)
- chloris, Bulimus chloris L.A. Reeve, 1848 - syn of: Amphidromus chloris (L.A. Reeve, 1848) - (BULIMULIDAE)
- chloris, Amphidromus chloris (L.A. Reeve, 1848) - (CAMAENIDAE)
- chloris, Scintilla chloris W.H. Dall, 1918 - syn of: Berthelinia chloris (W.H. Dall, 1918) - (GALEOMMATIDAE)
- chloris, Dimorphoplites chloris (Spath, 1924 †) - (HOPLITIDAE) (FOSSIL)
- chloris, Berthelinia chloris (W.H. Dall, 1918) - (JULIIDAE)
- chloris, Potamolithus chloris H.A. Pilsbry, 1911 - (LITHOGLYPHIDAE)
- chloris, Mopalia acuta chloris H.A. Pilsbry, 1918 - (MOPALIIDAE)
- chloris, Leucosyrinx chloris A.A. Olsson, 1922 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- chloris belvederica, Berthelinia chloris belvederica A.M. Keen & G. Smith, 1961 - syn of: Berthelinia chloris (W.H. Dall, 1918) - (JULIIDAE)
- chlorites, Prothalotia chlorites (R.A. Philippi, 1846) - (TROCHIDAE)
- Chloritis, Genus Chloritis H.H. Beck, 1837 (CAMAENIDAE)
- Chloritisanax, syn of: Genus Choritisanax T. Iredale, 1933 (CAMAENIDAE)
- Chloritobadistes, syn of: Genus Austrochloritis H.A. Pilsbry, 1891 (CAMAENIDAE)
- chlorizans, Erosaria erosa chlorizans (J.C. Melvill, 1888) - (CYPRAEIDAE)
- chlorizans lactescens, Erosaria erosa chlorizans lactescens P. Dautzenberg & J.L. Bouge, 1933 - (CYPRAEIDAE)
- chlorizans purissima, Erosaria erosa chlorizans purissima E.W. Vredenburg, 1919 - (CYPRAEIDAE)
- chlorochroa, Calocochlia chlorochroa G.B. I Sowerby, 1841 - (BRADYBAENIDAE)
- Chlorodiloma, Genus Chlorodiloma H.A. Pilsbry, 1889 (TROCHIDAE)
- chloroleuca, Galeomma chloroleuca G.P. Deshayes, 1856 - (GALEOMMATIDAE)
- chloroleuca, Nerita chloroleuca R.A. Philippi, 1849 - syn of: Argonerita chamaeleon (C. Linnaeus, 1758) - (NERITIDAE)
- chloroleuca, Laciolina chloroleuca (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- chloroleuca quoyi, Laciolina chloroleuca quoyi (G.B. Sowerby, 1868) - (TELLINIDAE)
- chloromphalus, Infundibulum chloromphalus A. Adams, 1851 - (TROCHIDAE)
- Chloromya, syn of: Genus Perna L. Philipsson, 1788 (MYTILIDAE)
- chlororaphe, Lamprocystis chlororaphe (E.A. Smith, 1893) - (EUCONULIDAE)
- chlorosa, Calliobasis chlorosa B.A. Marshall, 1983 - (SEGUENZIIDAE)
- chlorosina, Voluta chlorosina J.B.P.A. Lamarck, 1811 - syn of: Voluta ebraea C. Linnaeus, 1758 - (VOLUTIDAE)
- Chlorosina, syn of: Genus Voluta C. Linnaeus, 1758 (VOLUTIDAE)
- chlorosoma, Dyakia chlorosoma J.J. Vermeulen, T.S. Liew & M. Schilthuizen, 2015 - (DYAKIIDAE)
- chlorostoma, Peristernia chlorostoma (G.B. I Sowerby, 1825) - (FASCIOLARIIDAE)
- chlorostoma, Nerita ascensionis chlorostoma J.B.P.A. Lamarck, 1810 - (NERITIDAE)
- Chlorostoma, Genus Chlorostoma W.J. Swainson, 1840 (TEGULIDAE)
- chlorostoma, Odontotrochus chlorostoma (K.T. Menke, 1843) - (TROCHIDAE)
- chlorostoma, Turbinella chlorostoma G.B. I Sowerby, 1825 - syn of: Peristernia chlorostoma (G.B. I Sowerby, 1825) - (TURBINELLIDAE)
- chlorostomoides, Monoplex chlorostomoides C.J. Maury, 1924 † - (RANELLIDAE) (FOSSIL)
- chlorostomum, Clithon chlorostomum (G.B. I Sowerby, 1833) - (NERITIDAE)
- chlorostomum, Monoplex chlorostomum J.B.P.A. Lamarck, 1822 - syn of: Monoplex nicobaricus (P.F. Röding, 1798) - (RANELLIDAE)
- chlorostomum, Cymatium chlorostomum J.B.P.A. Lamarck, 1822 - syn of: Monoplex nicobaricus (P.F. Röding, 1798) - (RANELLIDAE)
- chlorostomum dispar, Clithon chlorostomum dispar (W.J. Broderip, 1832) - (NERITIDAE)
- chlorostomus, Thalotia chlorostomus (K.T. Menke, 1843) - syn of: Odontotrochus chlorostoma (K.T. Menke, 1843) - (TROCHIDAE)
- Chlorostracia, Genus Chlorostracia J.F. Mabille, 1889 (PALUDOMIDAE)
- chlorotica, Achatinella chlorotica L. Pfeiffer, 1856 - syn of: Amastra spirizona chlorotica (L. Pfeiffer, 1856) - (ACHATINELLIDAE)
- chlorotica, Amastra spirizona chlorotica (L. Pfeiffer, 1856) - (AMASTRIDAE)
- chlorotica, Pareuthria chlorotica (E.C. Von Martens, 1878) - (BUCCINIDAE)
- chlorotica, Melanopsis chlorotica P.M. Pallary, 1911 - syn of: Melanopsis buccinoidea chlorotica P.M. Pallary, 1911 - (MELANOPSIDAE)
- chlorotica, Melanopsis buccinoidea chlorotica P.M. Pallary, 1911 - (MELANOPSIDAE)
- chlorotica, Elysia chlorotica A.A. Gould, 1870 - (PLAKOBRANCHIDAE)
- chlorotica, Lyrodus chlorotica A.A. Gould, 1870 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- chloroticum, Aylacostoma chloroticum P.H. Scott, 1954 - (THIARIDAE)
- chloroticum, Placamen chloroticum (R.A. Philippi, 1849) - (VENERIDAE)
- chloroticus, Zonites chloroticus L. Pfeiffer, 1852 - (ZONITIDAE)
- chloroticus polycrates, Zonites chloroticus polycrates E.C. Von Martens, 1889 - (ZONITIDAE)
- Chlorozyga, Genus Chlorozyga Nützel & Cook, 2002 † (IMOGLOBIDAE) (FOSSIL)
- chlorum, Calliostoma chlorum C. Vilvens, 2005 - (CALLIOSTOMATIDAE)
- chlorus, Nassarius chlorus R.B. Watson, 1886 - syn of: Nassarius algidus (L.A. Reeve, 1853) - (NASSARIIDAE)
- chlupaci, Prokopites chlupaci (Horný, 1963 †) - (EUPHEMITIDAE) (FOSSIL)
- chlupaci, Coelocaulus chlupaci Horný, 1953 † - (MURCHISONIIDAE) (FOSSIL)
- chlupaci, Palaeozygopleura chlupaci Frýda, 1993 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- chlupaci, Krolmusium chlupaci Horný, 2002 † - (PORCELLIIDAE) (FOSSIL)
- Chlupacispira, Genus Chlupacispira Blodgett & Rohr, 1989 † (GOSSELETINIDAE) (FOSSIL)
- Chlupacites, Genus Chlupacites Becker & House, 1994 † (LATANARCESTIDAE) (FOSSIL)
- chnoodia, Trichia chnoodia (J.R. Bourguignat, 1864) - (HYGROMIIDAE)
- choana, Limicolaria choana J.R. Bourguignat, 1885 - (ACHATINIDAE)
- Choanoceras, Genus Choanoceras Lindström, 1890 † (CHOANOCERATIDAE) (FOSSIL)
- CHOANOCERATIDAE Miller, 1932 † - Family (CEPHALOPODA-ORTHOCERATOIDEA [Subclass]-ORTHOCERIDA [Order]) (FOSSIL)
- choanomphala, Biomphalaria choanomphala (E.C. Von Martens, 1879) - (PLANORBIDAE)
- choanomphala, Endoplon choanomphala G.P.L.K. Gude, 1901 - syn of: Endoplon villedaryi (C.M.F. Ancey, 1888) - (PLECTOPYLIDAE)
- Choanomphalodes, Subgenus Gyraulus (Choanomphalodes) W.A. Lindholm, 1927 (PLANORBIDAE)
- Choanomphalus, Genus Choanomphalus G. Gerstfeldt, 1859 (PLANORBIDAE)
- Choanopoma, Subgenus Annularia (Choanopoma) L. Pfeiffer (POMATIIDAE)
- Choanopoma, syn of: Genus Annularia H.C.F. Schumacher, 1817 (POMATIIDAE)
- Choanopomops, Subgenus Annularia (Choanopomops) F.C. Baker, 1924 (POMATIIDAE)
- choapaensis, Littoridina choapaensis W.A. Biese, 1944 - (COCHLIOPIDAE)
- choapaensis albolabris, Littoridina choapaensis albolabris W.A. Biese, 1944 - (COCHLIOPIDAE)
- choava, Zemitrella choava (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- choava, Mitra choava L.A. Reeve, 1844 - syn of: Vexillum woldemarii (L.C. Kiener, 1838) - (MITRIDAE)
- chobaiensis, Gonioleda chobaiensis Vukhuc & Huyen 1984 † - (NUCULANIDAE) (FOSSIL)
- chobauti, Melanopsis chobauti J.L. Nicolas, 1898 - syn of: Melanopsis saharica J.R. Bourguignat, 1880 - (MELANOPSIDAE)
- choboensis, Camaena choboensis (J.F. Mabille, 1889) - (CAMAENIDAE)
- choboensis, Helix choboensis J.F. Mabille, 1889 - syn of: Camaena choboensis (J.F. Mabille, 1889) - (HELICIDAE)
- choboensis, Mesopinna choboensis VuKhuc & Huyen 1984 † - (PINNIDAE) (FOSSIL)
- choboensis, Cristaria choboensis J.F. Mabille, 1889 - (UNIONIDAE)
- choboensis inesilla, Camaena choboensis inesilla (J.F. Mabille, 1889) - (CAMAENIDAE)
- choccoloccoensis, Leptoxis choccoloccoensis (H.H. Smith, 1922) - (PLEUROCERIDAE)
- chocolata, Micrarionta chocolata G. Willett, 1935 - (HELMINTHOGLYPTIDAE)
- chocolata, Thaisella chocolata (P.L. Duclos, 1832) - (MURICIDAE)
- chocolata, Inquisitor chocolata (E.A. Smith, 1875) - (PSEUDOMELATOMIDAE)
- chocolata, Turbonilla chocolata (P.P. Carpenter, 1864) - (PYRAMIDELLIDAE)
- chocolata, Pleurotoma chocolata E.A. Smith, 1875 - syn of: Inquisitor chocolata (E.A. Smith, 1875) - (TURRIDAE)
- chocolatum, Purpura chocolatum P.L. Duclos, 1832 - syn of: Thaisella chocolata (P.L. Duclos, 1832) - (MURICIDAE)
- chocolatum, Tarebia chocolatum A. Brot, 1860 - syn of: Tarebia granifera (J.B.P.A. Lamarck, 1816) - (THIARIDAE)
- chocolatus, Fusinus chocolatus (T.A. Okutani, 1983) - (FASCIOLARIIDAE)
- chocotinctum, Pusia chocotinctum H. Turner, 2008 - (COSTELLARIIDAE)
- choctavensis, Callucina choctavensis (Meyer, 1886 †) - (LUCINIDAE) (FOSSIL)
- choctavensis, Melanopsis choctavensis T.H. Aldrich, 1886 † - syn of: Bulliopsis choctavensis (T.H. Aldrich, 1886 †) - (MELANOPSIDAE) (FOSSIL)
- choctavensis, Bulliopsis choctavensis (T.H. Aldrich, 1886 †) - (NASSARIIDAE) (FOSSIL)
- choctavensis, Chlamys choctavensis T.H. Aldrich, 1895 † - (PECTINIDAE) (FOSSIL)
- choctaw, Americoliva bollingi choctaw E.J. Petuch & R.F. Myers, 2014 - (OLIVIDAE)
- choctawensis, Choctawites choctawensis (Shumard, 1863 †) - (DELEPINOCERATIDAE) (FOSSIL)
- choctawensis, Goniatites choctawensis Shumard, 1863 † - syn of: Choctawites choctawensis (Shumard, 1863 †) - (GONIATITIDAE) (FOSSIL)
- choctawensis, Meekospira choctawensis Girty, 1912 † - (MEEKOSPIRIDAE) (FOSSIL)
- choctawensis, Villosa choctawensis E.W. Athearn, 1964 - (UNIONIDAE)
- choctawhatchensis, Lioplax choctawhatchensis E.G. Vanatta, 1935 - (VIVIPARIDAE)
- choctawiensis, Goniatites choctawiensis (Shumard †) - (GONIATITIDAE) (FOSSIL)
- Choctawites, Genus Choctawites Korn & Titus, 2015 † (DELEPINOCERATIDAE) (FOSSIL)
- chodo, Triplodon chodo M.C.D. Mansur & Pimpão, 2008 - (HYRIIDAE)
- chodon, Solariella chodon C. Vilvens, 2009 - (SOLARIELLIDAE)
- chodschendicus, Pseudonapaeus chodschendicus (Mukhitdinov, 1976) - (ENIDAE)
- choelotricha, Helix choelotricha L. Benoit, 1882 - syn of: Campylaea planospira benedicta (W. Kobelt, 1872) - (HELICIDAE)
- Choena, syn of: Genus Gastrochaena L. Spengler, 1783 (GASTROCHAENIDAE)
- Choerina, Genus Choerina Brusina, 1882 † (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- choffati, Arca choffati Thurmann & Etallon, 1863 † - (ARCIDAE) (FOSSIL)
- choffati, Parawedekindia choffati de Loriol, 1900 † - (ASPIDOCERATIDAE) (FOSSIL)
- choffati, Hysteroceras choffati Spath, 1925 † - (BRANCOCERATIDAE) (FOSSIL)
- choffati, Neokentroceras choffati Spath, 1922 † - syn of: Neokentroceras subtuberculatum Spath, 1922 † - (BRANCOCERATIDAE) (FOSSIL)
- choffati, Nodicoeloceras choffati (Renz, 1912 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- choffati, Neolobites choffati A. Hyatt, 1903 † - (ENGONOCERATIDAE) (FOSSIL)
- choffati, Perisphinctes choffati Dacque, 1905 † - (PERISPHINCTIDAE) (FOSSIL)
- choffati, Tylostoma choffati J.H.F. Douvillé, 1916 † - (TYLOSTOMATIDAE) (FOSSIL)
- Choffatia, Genus Choffatia Steinmann, 1881 † (PERISPHINCTIDAE) (FOSSIL)
- Choffaticeras, Genus Choffaticeras Hyatt , 1903 † (PSEUDOTISSOTIIDAE) (FOSSIL)
- Choicensisphinctes, Genus Choicensisphinctes Leanza , 1980 † (ATAXIOCERATIDAE) (FOSSIL)
- choinix, Macrochlamys choinix (W.H. Benson, 1861) - (ARIOPHANTIDAE)
- choiseul, Turbonilla choiseul A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- choiseulensis, Papuina choiseulensis J.W. Brazier, 1869 - (CAMAENIDAE)
- choiseulensis, Pholidotrope choiseulensis Vilvens, 2017 - (CHILODONTIDAE)
- chojensis, Yoldia chojensis Simonova, 1941 † - (YOLDIIDAE) (FOSSIL)
- chojensis turbida, Yoldia chojensis turbida L. Krishtofovich, 1969 † - syn of: Yoldia chojensis Simonova, 1941 † - (YOLDIIDAE) (FOSSIL)
- cholana, Arca cholana E.M. Spieker, 1922 † - (ARCIDAE) (FOSSIL)
- cholerigena, Serriphaedusa cholerigena (P.M. Heude, 1889) - (CLAUSILIIDAE)
- cholla, Lima cholla Stoyanow, 1949 † - (LIMIDAE) (FOSSIL)
- cholla, Gervillia cholla Stoyanow, 1949 † - (MYALINIDAE) (FOSSIL)
- cholmondeleyi, Conus cholmondeleyi J.C. Melvill, 1900 - syn of: Cylinder textile (C. Linnaeus, 1758) - (CONIDAE)
- cholmondeleyi, Purpuradusta cholmondeleyi J.C. Melvill, 1888 - syn of: Purpuradusta gracilis macula (G.F. Angas, 1867) - (CYPRAEIDAE)
- cholutecana, Turbonilla cholutecana L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- Chonabasis, syn of: Genus Megalomphalus Š. Brusina, 1871 (VANIKORIDAE)
- choncina, Lottia choncina J. Ramírez-Böhme, 1974 - (LOTTIIDAE)
- chondra, Gibberula chondra J. Gardner, 1937 † - (CYSTISCIDAE) (FOSSIL)
- Chondrella, Subgenus Georissa (Chondrella) W.H. Pease, 1871 (HYDROCENIDAE)
- chondriformis, Clausilia chondriformis G.J. De Cristofori & G. Jan, 1832 - (CLAUSILIIDAE)
- chondriformis, Euchondrus chondriformis (A. Mousson, 1861) - (ENIDAE)
- Chondrina, Genus Chondrina Reichenbach, 1828 (CHONDRINIDAE)
- chondrina, Cartilagovelutina chondrina (P. Bartsch in K.M. Derjugin, 1950) - (VELUTINIDAE)
- CHONDRINIDAE Steenberg, 1925 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-CHONDRINOIDEA [Superfamily])
- Chondritortus, syn of: Genus Jaminia A. Risso, 1826 (ENIDAE)
- Chondrobasis, Genus Chondrobasis B. Arconada & M.A. Ramos, 2001 (HYDROBIIDAE)
- Chondroceras, Genus Chondroceras Zhuravleva, 1972 † (SPHAEROCERATIDAE) (FOSSIL)
- Chondrocerithium, Subgenus Cerithium (Chondrocerithium) T.A. de M. Monterosato in A.E.M. Cossmann, 1906 (CERITHIIDAE)
- chondrocidaricola, Vitreolina chondrocidaricola A. Warén, B.L. Burch & T.A. Burch, 1984 - (EULIMIDAE)
- Chondrocyclus, Genus Chondrocyclus C.M.F. Ancey, 1898 (CYCLOPHORIDAE)
- chondroderma, Aegista chondroderma (O.F. von Möllendorff, 1900) - (BRADYBAENIDAE)
- Chondrodonta, Genus Chondrodonta Stanton , 1901 † (CHONDRODONTIDAE) (FOSSIL)
- CHONDRODONTIDAE Freneix, 1959 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-PECTINIDA [Order]-PLICATULOIDEA [Superfamily]) (FOSSIL)
- Chondroplax, Subgenus Chiton (Chondroplax) J. Thiele in F.H. Troschel, 1893 (CHITONIDAE)
- Chondropleura, syn of: Subgenus Ischnochiton (Stenosemus) A.T. von Middendorff, 1847 (ISCHNOCHITONIDAE)
- Chondropoma, Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- Chondropomartes, syn of: Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- CHONDROPOMATIDAE - syn of Family: POMATIIDAE
- Chondropomatus, syn of: Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- Chondropomella, Subgenus Chondropoma (Chondropomella) P. Bartsch, 1932 (POMATIIDAE)
- Chondropometes, Genus Chondropometes J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondropomisca, syn of: Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- Chondropomium, Subgenus Chondropoma (Chondropomium) J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondropomodes, syn of: Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- Chondropomorus, Subgenus Chondropoma (Chondropomorus) J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondropomorus, syn of: Genus Parachondria W.H. Dall, 1905 (POMATIIDAE)
- Chondrops, syn of: Genus Chondropoma L. Pfeiffer, 1847 (POMATIIDAE)
- Chondrosepia, syn of: Genus Sepioteuthis H.M.D. De Blainville, 1824 (LOLIGINIDAE)
- Chondrostea, syn of: Genus Unio L. Philipsson, 1788 (UNIONIDAE)
- Chondrostes, Genus Chondrostes Gistl, 1847 (UNIONIDAE)
- Chondroteuthis, Genus Chondroteuthis Bode, 1933 † (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- Chondrothyra, Genus Chondrothyra J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondrothyrella, Genus Chondrothyrella C. de la Torre & P. Bartsch, 1938 (POMATIIDAE)
- Chondrothyretes, Genus Chondrothyretes C. de la Torre & P. Bartsch, 1938 (POMATIIDAE)
- Chondrothyretes, syn of: Genus Chondrothyra J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondrothyrium, Genus Chondrothyrium J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondrothyroma, syn of: Genus Chondrothyra J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Chondrula, Genus Chondrula H.H. Beck, 1837 (ENIDAE)
- Chondrulopsina, Genus Chondrulopsina W.A. Lindholm, 1925 (ENIDAE)
- Chondrulopsis, syn of: Genus Pseudonapaeus C.A. Westerlund, 1887 (ENIDAE)
- Chondrulus, syn of: Genus Chondrula H.H. Beck, 1837 (ENIDAE)
- Chondrus, Genus Chondrus G.L.C.F.D. Cuvier, 1817 (ENIDAE)
- chondschenicus, Pseudonapaeus chondschenicus (Mukhitdinov, 1976) - (ENIDAE)
- choneides, Paradentalium choneides V. Scarabino & F. Scarabino, 2010 - (DENTALIIDAE)
- Choneplax, Genus Choneplax W.H. Dall, 1882 (ACANTHOCHITONIDAE)
- Choneteuthis, Genus Choneteuthis C.C. Lu & R. Boucher-Rodoni, 2006 (SEPIOLIDAE)
- chongi, Pseudolimea chongi I. Hayami & al., 1977 † - (LIMIDAE) (FOSSIL)
- chongi, Eolytoceras chongi Hillebrandt, 2000 † - (LYTOCERATIDAE) (FOSSIL)
- chongi, Linotrigonia chongi A.M. Pérez & Reyes, 1983 † - (PTEROTRIGONIIDAE) (FOSSIL)
- Choniocardia, Genus Choniocardia A.E.M. Cossmann, 1904 (CONDYLOCARDIIDAE)
- chonioides, Dreissena chonioides A.E.M. Cossmann, 1887 † - (DREISSENIDAE) (FOSSIL)
- chonomphala, Cernuella chonomphala J.R. Bourguignat, 1876 - syn of: Cernuella rugosa (J.B.P.A. Lamarck, 1822) - (HYGROMIIDAE)
- chonomphalum, Ptychophylloceras chonomphalum (Vacek, 1886 †) - (PHYLLOCERATIDAE) (FOSSIL)
- chonomphix, Hendersoniella lux chonomphix F.G. Thompson & L.R. Correa-Sandoval, 1994 - (UROCOPTIDAE)
- choprae, Parreysia choprae B. Prashad, 1930 - (UNIONIDAE)
- choptankensis, Busycotypus choptankensis E.J. Petuch, 1993 † - (BUSYCONIDAE) (FOSSIL)
- choptankensis, Ecphora choptankensis E.J. Petuch, 1988 † - (MURICIDAE) (FOSSIL)
- choptankensis, Chesaclava choptankensis (Martin, 1904 †) - (TURRIDAE) (FOSSIL)
- choptankensis, Volutifusus choptankensis E.J. Petuch, 1988 † - (VOLUTIDAE) (FOSSIL)
- chorda, Orthonema chorda Anderson, Hoare & Sturgeon, 1985 † - (ORTHONEMATIDAE) (FOSSIL)
- chordanodosa, Trepsipleura chordanodosa B.S. Kues, 2002 † - (PALAEOSTYLIDAE) (FOSSIL)
- chordata, Chlanidota chordata (H. Strebel, 1908) - (BUCCINIDAE)
- chordata, Savatieria chordata Z.J.A. De Castellanos, E. Rolán & S. Bartolotta, 1987 - (BUCCINIDAE)
- chordata, Drillia chordata H.H. Suter, 1908 - syn of: Aoteadrillia wanganuiensis (F.W. Hutton, 1873) - (DRILLIIDAE)
- chordata, Aoteadrillia chordata H.H. Suter, 1908 - syn of: Aoteadrillia wanganuiensis chordata (H.H. Suter, 1908) - (HORAICLAVIDAE)
- chordata, Aoteadrillia wanganuiensis chordata (H.H. Suter, 1908) - (HORAICLAVIDAE)
- chordata, Odostomia chordata H.H. Suter, 1908 - (PYRAMIDELLIDAE)
- chordata, Turritella chordata H.H. Suter, 1908 - (TURRITELLIDAE)
- chordata, Brachypodella chordata (L. Pfeiffer, 1855) - (UROCOPTIDAE)
- chordatum, Chondropoma chordatum (J. Gundlach in L. Pfeiffer, 1858) - (POMATIIDAE)
- chordatum baracoensis, Chondropoma chordatum baracoensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chordatum guantanamensis, Chondropoma chordatum guantanamensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chordatum mayariensis, Chondropoma chordatum mayariensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chordatum songoensis, Chondropoma chordatum songoensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chordatum tanamensis, Chondropoma chordatum tanamensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chordatus, Prosipho chordatus (H. Strebel, 1908) - (BUCCINIDAE)
- chordatus, Costellipitar chordatus (A. Römer, 1867) - (VENERIDAE)
- chordicosta, Scapharca chordicosta D.T. Dockery, 1982 † - (ARCIDAE) (FOSSIL)
- chordula, Bellaspira chordula W. Turton, 1819 - syn of: Propebela rufa (G. Montagu, 1803) - (DRILLIIDAE)
- chorea, Odostomella chorea (C. Hedley, 1909) - (PYRAMIDELLIDAE)
- chorea, Herviera chorea C. Hedley, 1909 - syn of: Odostomella chorea (C. Hedley, 1909) - (PYRAMIDELLIDAE)
- chorea, Voluta chorea P.F. Röding, 1798 - syn of: Voluta musica C. Linnaeus, 1758 - (VOLUTIDAE)
- Choreanoceroides, Genus Choreanoceroides † (ENDOCERIDA (UNASSIGNED)) (FOSSIL)
- chorellinus, Unio chorellinus É.A.A. Locard, 1899 - syn of: Unio abrantesianus É.A.A. Locard, 1899 - (UNIONIDAE)
- chorellus, Unio chorellus É.A.A. Locard, 1899 - syn of: Unio abrantesianus É.A.A. Locard, 1899 - (UNIONIDAE)
- Choreotyphis, syn of: Genus Siphonochelus F.P. Jousseaume, 1880 (MURICIDAE)
- CHORIPLACIDAE Ashby, 1928 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]-CHITONIDA [Order]-ACANTHOCHITONINA [Suborder]-CRYPTOPLACOIDEA [Superfamily])
- Choriplax, Genus Choriplax H.A. Pilsbry, 1894 (CHORIPLACIDAE)
- chorismenostoma, Pyramidula chorismenostoma (C.A. Westerlund & H. Blanc, 1879) - (PYRAMIDULIDAE)
- chorista, Cominella chorista R.K. Dell, 1952 † - (BUCCINIDAE) (FOSSIL)
- chorista, Iberellus chorista G. Servain, 1880 - syn of: Iberellus companyonii (E.A. Rossmässler, 1839) - (HELICIDAE)
- Choristella, Genus Choristella K.J. Bush, 1897 (LEPETELLIDAE)
- CHORISTELLIDAE - syn of Family: LEPETELLIDAE
- choristes, Emarginula choristes W.H. Dall, 1925 - (FISSURELLIDAE)
- Choristes, syn of: Genus Amauropsis O.A.L. Mörch, 1857 (NATICIDAE)
- Choristoceras, Genus Choristoceras Hauer , 1865 † (CHORISTOCERATIDAE) (FOSSIL)
- CHORISTOCERATIDAE Hyatt, 1900 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-CHORISTOCERATOIDEA [Superfamily]) (FOSSIL)
- choristochila, Josephinella choristochila (O. Böttger, 1886) - (HELICIDAE)
- Choristodon, Genus Choristodon I.H. Jonas, 1844 (VENERIDAE)
- choristogyra, Valvata choristogyra P. Hagenmüller, 1884 - (VALVATIDAE)
- Choristoma, syn of: Genus Truncatella A. Risso, 1826 (TRUNCATELLIDAE)
- Choritisanax, Genus Choritisanax T. Iredale, 1933 (CAMAENIDAE)
- Chorolimax, syn of: Genus Deroceras C.S. Rafinesque, 1820 (AGRIOLIMACIDAE)
- Choromytilus, Genus Choromytilus T. Soot-Ryen, 1952 (MYTILIDAE)
- choroshovensis, Buvignieria choroshovensis Gerasimov, 1992 † - (RISSOINIDAE) (FOSSIL)
- chorrerensis, Annularops sauvallei chorrerensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chorrerensis, Tomelasmus chorrerensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- chorrillensis, Bermudezia eurystoma chorrillensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chorrillensis, Aguayotudora cristata chorrillensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- chorrillensis, Heterocoptis chorrillensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- chorrillensis, Tetrentodon gravidula chorrillensis M.L. Jaume & C. de la Torre, 1976 - (UROCOPTIDAE)
- Chorrobius, Genus Chorrobius R. Hershler, J.Y. Liu & J.J. Landye, 2011 (COCHLIOPIDAE)
- Chorus, Genus Chorus J.E. Gray, 1847 (MURICIDAE)
- chorus, Choromytilus chorus (Molina, 1782) - (MYTILIDAE)
- chorus, Mytilus chorus J.I. Molina, 1782 - syn of: Choromytilus chorus (Molina, 1782) - (MYTILIDAE)
- Chosenelix, Genus Chosenelix H.A. Pilsbry, 1927 (CAMAENIDAE)
- chosenensis, Aforia chosenensis P. Bartsch, 1945 - syn of: Aforia insignis (J.G. Jeffreys, 1883) - (COCHLESPIRIDAE)
- chosenica, Aegista chosenica H.A. Pilsbry, 1926 - (BRADYBAENIDAE)
- chosenica, Ammonicera chosenica A. Chernyshev, 2003 - (OMALOGYRIDAE)
- chosenica, Chlamys chosenica J.T. Kuroda, 1932 - (PECTINIDAE)
- choshiense, Ancyloceras choshiense Shimizu, 1931 † - (ANCYLOCERATIDAE) (FOSSIL)
- choshiensis, Pupa choshiensis T. Habe, 1958 - syn of: Rictaxiella choshiensis (T. Habe, 1958) - (ACTEONIDAE)
- choshiensis, Aegista tokyoensis choshiensis K. Sakurai & E. Sorita, 1982 - (BRADYBAENIDAE)
- choshiensis, Rictaxiella choshiensis (T. Habe, 1958) - (BULLINIDAE)
- choshiensis, Iphinopsis choshiensis (T. Habe, 1958) - (CANCELLARIIDAE)
- choshiensis, Admete choshiensis T. Shikama, 1962 - (CANCELLARIIDAE)
- choshiensis, Iphinoe choshiensis T. Habe, 1958 - syn of: Iphinopsis choshiensis (T. Habe, 1958) - (CAPULIDAE)
- choshiensis, Limatula choshiensis J.T. Kuroda & T. Habe in T. Habe, 1961 - (LIMIDAE)
- choshiensis, Lunatia choshiensis R. Tiba, 1985 - syn of: Euspira pallida (W.J. Broderip & G.B. I Sowerby, 1829) - (NATICIDAE)
- choshiensis, Prionovolva choshiensis (C.N. Cate, 1973) - (OVULIDAE)
- choshiensis, Circulus choshiensis T. Habe, 1961 - (TORNIDAE)
- choshuana, Yoshishigea choshuana S. Hori & H. Fukuda, 1999 - (PYRAMIDELLIDAE)
- Chosiphiline, syn of: Genus Philine P. Ascanius, 1772 (PHILINIDAE)
- choslenae, Pusia choslenae (W.O. Cernohorsky, 1982) - (COSTELLARIIDAE)
- chosuana, Turbonilla chosuana (S. Hori & H. Fukuda, 1999) - (PYRAMIDELLIDAE)
- choteauensis, Clioscaphites choteauensis Cobban † - (SCAPHITIDAE) (FOSSIL)
- chouberti, Mammites chouberti M. Collignon, 1967 † - syn of: Mammites nodosoides (F. Schlüter, 1871 †) - (ACANTHOCERATIDAE) (FOSSIL)
- chouberti, Hypengonoceras chouberti M. Collignon, 1966 † - (KNEMICERATIDAE) (FOSSIL)
- chouberti, Hemithersitea chouberti Salvan, 1954 † - (THERSITEIDAE) (FOSSIL)
- chouetensis, Boughdiriella chouetensis Frau & al., 2015 † - (HIMALAYITIDAE) (FOSSIL)
- Chouteauoceras, Genus Chouteauoceras Miller & Garner, 1953 † (TRIGONOCERATIDAE) (FOSSIL)
- chowadei, Svalbardiceras chowadei Tozer, 1965 † - (SIBIRITIDAE) (FOSSIL)
- chowanensis, Acteocina chowanensis H.G. Richards, 1947 - syn of: Acteocina canaliculata (T. Say, 1826) - (ACTEOCINIDAE)
- chowanensis, Nassarius chowanensis Gardner, 1943 † - (NASSARIIDAE) (FOSSIL)
- chowanensis, Compsodrillia chowanensis Gardner, 1948 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- chozaensis, Medlicottia chozaensis Plummer & P.H. Scott, 1937 † - (MEDLICOTTIIDAE) (FOSSIL)
- choziensis, Coelatura choziensis (H.B. Preston, 1910) - (UNIONIDAE)
- choziensis bangweolica, Caelatura choziensis bangweolica F. Haas, 1936 - syn of: Coelatura choziensis (H.B. Preston, 1910) - (BARLEEIIDAE)
- chranos, Clypeostoma chranos Vilvens, 2017 - (CHILODONTIDAE)
- chreithiensis, Kutatissites chreithiensis Kakabadze, 1981 † - (ANCYLOCERATIDAE) (FOSSIL)
- chrevotin, Plekocheilus chrevotin J.C. Chenu, 1847 - (AMPHIBULIMIDAE)
- chrisabbasi, Amphidromus chrisabbasi N.N. Thach, 2017 - (CAMAENIDAE)
- chrishna, Ammonites chrishna E. Forbes, 1846 † - syn of: Pachydiscus neubergicus (J. Von Hauer, 1858 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- Christadens, syn of: Genus Ctenodesma C.T. Simpson, 1900 (UNIONIDAE)
- christae, Deroceras christae W. Rähle, 1998 - (AGRIOLIMACIDAE)
- christae, Albinaria christae V. Wiese, 1989 - (CLAUSILIIDAE)
- christae, Symptychiella christae H. Nordsieck, 2007 - (CLAUSILIIDAE)
- christae, Oospira eregia christae H. Nordsieck, 2016 - (CLAUSILIIDAE)
- christae, Alycaeus christae W.J.M. Maassen, 2006 - (CYCLOPHORIDAE)
- christae, Rhiostoma christae Thach, 2016 - (CYCLOPHORIDAE)
- christae, Plectostoma christae (W.J.M. Maassen, 2001) - (DIPLOMMATINIDAE)
- christae, Abyssotrophon christae R.V. Egorov, 1993 - (MURICIDAE)
- christahemmenae, Laotia christahemmenae B. Páll-Gergely, 2014 - (CYCLOPHORIDAE)
- christahemmenae, Cyphoma christahemmenae (D. Fehse, 1997) - (OVULIDAE)
- christamariae, Callochiton christamariae E. Schwabe, 2003 - (CALLOCHITONIDAE)
- christamariae, Mitromica christamariae R. Salisbury & K. Schniebs, 2009 - (COSTELLARIIDAE)
- christchurchi, Pietteia christchurchi K. Bandel, J. Gründel & P.A. Maxwell, 2000 † - (APORRHAIDAE) (FOSSIL)
- christei, Grantlandispira christei Peel, 1984 † - syn of: Pycnotrochus christiei Peel, 1984 † - (ANOMPHALIDAE) (FOSSIL)
- christenseni, Naesiotus christenseni W.B. Miller & D.M. Reeder, 1984 - (BULIMULIDAE)
- christenseni, Turgenitubulus christenseni G.A. Solem, 1981 - (CAMAENIDAE)
- christenseni, Sonorella christenseni H.L. Fairbanks & D.M. Reeder, 1980 - (HELMINTHOGLYPTIDAE)
- christenseni, Montacuta christenseni J.A. Grieg, 1929 - syn of: Waldo parasiticus (W.H. Dall, 1876) - (MONTACUTIDAE)
- christenseni, Pseudogarnieria christenseni Alsen & Rawson, 2005 † - (NEOCOMITIDAE) (FOSSIL)
- christfriedi, Raphitoma christfriedi E. Rolán, J. Otero-Schmidt & F. Fernandes, 1998 - (RAPHITOMIDAE)
- christiaensi, Joculator christiaensi M. Jay & J. Drivas, 2002 - (CERITHIOPSIDAE)
- christiaensi, Emarginula christiaensi P. Piani, 1985 - (FISSURELLIDAE)
- christiaensi, Puncturella christiaensi R.N. Kilburn, 1978 - syn of: Puncturella nana (C.B. Adams, 1872) - (FISSURELLIDAE)
- christiaensi, Lepidozona christiaensi R.A. Van Belle, 1982 - (ISCHNOCHITONIDAE)
- christiaensis, Lepidozona christiaensis R.A. Van Belle, 1982 - syn of: Lepidozona christiaensi R.A. Van Belle, 1982 - (ISCHNOCHITONIDAE)
- christiana, Sydaphera christiana A. Verhecken, 2008 - (CANCELLARIIDAE)
- christianae, Clavatula christianae F. Nolf, 2011 - (CLAVATULIDAE)
- christianae, Kabeiro christianae Shipman & T.M. Gosliner, 2015 - (DOTIDAE)
- christianeae, Bolma christianeae F. Nolf, 2005 - syn of: Bolma jacquelineae (I. Marche-Marchad, 1957) - (TURBINIDAE)
- christiani, Epitonium christiani L. Bozzetti, 2008 - (EPITONIIDAE)
- christianiae, Bucania christianiae E.F.R.K. Koken & J. Perner, 1925 † - syn of: Baltiscanella christianiae (E.F.R.K. Koken & J. Perner, 1925 †) - (BUCANIIDAE) (FOSSIL)
- christianiae, Baltiscanella christianiae (E.F.R.K. Koken & J. Perner, 1925 †) - (CARCASSONNELLIDAE) (FOSSIL)
- christianiae, Maclurites christianiae (E.F.R.K. Koken & J. Perner, 1925 †) - (MACLURITIDAE) (FOSSIL)
- christianiae, Omphalocirrus christianiae E.F.R.K. Koken & J. Perner, 1925 † - syn of: Maclurites christianiae (E.F.R.K. Koken & J. Perner, 1925 †) - (OMPHALOCIRRIDAE) (FOSSIL)
- christianieae, Clisospira christianieae E.F.R.K. Koken & J. Perner, 1925 † - (CLISOSPIRIDAE) (FOSSIL)
- Christianoconcha, Genus Christianoconcha T. Iredale, 1945 (PUNCTIDAE)
- christiei, Pycnotrochus christiei Peel, 1984 † - (ANOMPHALIDAE) (FOSSIL)
- christiei, Scalptia christiei (Finlay, 1924 †) - (CANCELLARIIDAE) (FOSSIL)
- christiei, Cyclocardia christiei J. Marwick, 1929 † - (CARDITIDAE) (FOSSIL)
- Christikovia, Genus Christikovia Scarabino, 1995 † (WEMERSONIELLIDAE) (FOSSIL)
- christina, Belomitra christina (W.H. Dall, 1927) - (BELOMITRIDAE)
- christina, Mangelia christina W.H. Dall, 1927 - (MANGELIIDAE)
- christinae, Ariophanta christinae (C.B. Adams) - (ARIOPHANTIDAE)
- christinae, Laeocathaica christinae (A. Adams, 1870) - (BRADYBAENIDAE)
- christinae, Tsoukatosia christinae A. Reischütz & P.L. Reischütz, 2003 - (CLAUSILIIDAE)
- christinae, Helix christinae W. Kobelt, 1906 - syn of: Helix pomatia C. Linnaeus, 1758 - (HELICIDAE)
- christinae, Retispira christinae A.G. Cook & al., 2003 † - (KNIGHTITIDAE) (FOSSIL)
- christinae, Trogloconcha christinae D.L. Geiger, 2003 - (LAROCHEIDAE)
- christinae, Mitra christinae G.T. Poppe, 2008 - (MITRIDAE)
- christinae, Arcopsis christinae Heinberg 1978 † - (NOETIIDAE) (FOSSIL)
- christinae, Sansonia christinae R. Selli, 1973 - syn of: Sansonia kirkpatricki (T. Iredale, 1917) - (PICKWORTHIIDAE)
- christinae, Elysia christinae Krug, Vendetti & Valdés, 2016 - (PLAKOBRANCHIDAE)
- christinae, Clanculus christinae F. Rubio & E. Rolán, 2002 - syn of: Clanculus cristinae F. Rubio & E. Rolán, 2002 - (TROCHIDAE)
- christinae, Guerrina christinae (K. Groh, 1993) - (VITRINIDAE)
- Christinapecten, Subgenus Chesapecten (Christinapecten) Ward, 1992 (PECTINIDAE) (FOSSIL)
- christineae, Bolma christineae F. Nolf, 2005 - syn of: Bolma jacquelineae (I. Marche-Marchad, 1957) - (TURBINIDAE)
- Christineconcha, Genus Christineconcha E.M. Krylova & R. von Cosel, 2011 (VESICOMYIDAE)
- christineladdae, Prunum christineladdae C.J. Maury, 1917 † - (MARGINELLIDAE) (FOSSIL)
- christinelladae, Marginella christinelladae C.J. Maury, 1917 † - syn of: Prunum christineladdae C.J. Maury, 1917 † - (MARGINELLIDAE) (FOSSIL)
- Christioceras, Genus Christioceras Nassichuk & Furnish, 1965 † (CHRISTIOCERATIDAE) (FOSSIL)
- CHRISTIOCERATIDAE Nassichuk & Furnish, 1965 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-SCHISTOCERATOIDEA [Superfamily]) (FOSSIL)
- Christitys, Genus Christitys Popenoe & Saul, 1987 † (PERISSITYIDAE) (FOSSIL)
- christmani, Hendersoniella christmani F.G. Thompson & L.R. Correa-Sandoval, 1994 - (UROCOPTIDAE)
- christmasis, Semperula christmasis J.W. Thomé, 1983 - syn of: Semperula wallacei (A. Issel, 1874) - (VERONICELLIDAE)
- christobalconi, Oliva christobalconi C.J. Maury, 1917 † - (OLIVIDAE) (FOSSIL)
- christofferseni, Notocrater christofferseni S.F.B. de Lima, 2014 - (PSEUDOCOCCULINIDAE)
- christoli, Christolia christoli (Beaudoin, 1851 †) - (MORPHOCERATIDAE) (FOSSIL)
- christoli, Protophites christoli (Beaudoin 1851 †) - (OECOPTYCHIIDAE) (FOSSIL)
- Christolia, Genus Christolia Rollier , 1909 † (MORPHOCERATIDAE) (FOSSIL)
- christophei, Cerion christophei W.J. Clench, 1937 - (CERIONIDAE)
- christopheri, Drymaeus multifasciatus christopheri H.A. Pilsbry, 1899 - (BULIMULIDAE)
- christopheri, Ceratostoma christopheri G.J. Vermeij & E.H. Vokes, 1997 † - (MURICIDAE) (FOSSIL)
- christopheri, Haplocochlias christopheri F. Rubio & E. Rolán, 2015 - (SKENEIDAE)
- christopherseni, Achatinella mustelina christopherseni D.A. Welch, 1938 - (ACHATINELLIDAE)
- christophi, Caucasotachea nordmanni christophi (O. Böttger, 1881) - (HELICIDAE)
- christophi atrolabioides, Helix christophi atrolabioides W. Kobelt, 1914 - syn of: Caucasotachea nordmanni christophi (O. Böttger, 1881) - (HELICIDAE)
- Christophipoma, Genus Christophipoma P. Bartsch, 1946 (POMATIIDAE)
- Christophipoma, syn of: Genus Eyerdamia P. Bartsch, 1946 (POMATIIDAE)
- Christophoceras, Genus Christophoceras † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- christophori, Helix christophori O.W. Von Rosen, 1911 - syn of: Hesseola solidior (A. Mousson, 1863) - (HELICIDAE)
- christophori, Helicina christophori H.A. Pilsbry, 1897 - (HELICINIDAE)
- christophori, Abchasohela christophori (O.W. Von Rosen, 1911) - (HYGROMIIDAE)
- christovalensis, Neripteron christovalensis L.A. Reeve - (NERITIDAE)
- christovalis, Tellina christovalis E.A. Smith, 1876 - (TELLINIDAE)
- christyi, Epitonium christyi (T. Iredale, 1936) - (EPITONIIDAE)
- christyi, Margineulima christyi (J. Marwick, 1924 †) - (EULIMIDAE) (FOSSIL)
- christyi, Elimia christyi (I. Lea, 1862) - (PLEUROCERIDAE)
- christyi, Fumonelix christyi (T.B. Bland, 1860) - (POLYGYRIDAE)
- chroabsinthina, Quickella chroabsinthina J.R. Bourguignat, 1877 - syn of: Catinella arenaria (N.R. Bouchard-Chantereaux, 1837) - (SUCCINEIDAE)
- chroma, Strigilla chroma A.E. Salisbury, 1934 - (TELLINIDAE)
- chromatacme, Achatinella swiftii chromatacme H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- chromatella, Limicolaria chromatella P.M.A. Morelet - (ACHATINIDAE)
- chromatica, Limicolaria saturata chromatica H.A. Pilsbry, 1904 - (ACHATINIDAE)
- Chromatosphaera, Subgenus Chloraea (Chromatosphaera) H.A. Pilsbry, 1892 (BRADYBAENIDAE)
- chromatus, Callistoctopus chromatus A. Heilprin, 1888 - syn of: Callistoctopus furvus (A.A. Gould, 1852) - (OCTOPODIDAE)
- chromatus, Octopus chromatus A. Heilprin, 1888 - syn of: Callistoctopus furvus (A.A. Gould, 1852) - (OCTOPODIDAE)
- chromium, Tropidophora chromium (P.M.A. Morelet, 1877) - (POMATIIDAE)
- Chromocadlina, Genus Chromocadlina N.H. Odhner in A. Franc, 1968 (CHROMODORIDIDAE)
- Chromocochlea, syn of: Subgenus Helicostyla (Helicobulinus) W.J. Broderip, 1841 (BRADYBAENIDAE)
- Chromodoridella, Genus Chromodoridella C.N.E. Eliot, 1905 (CHROMODORIDIDAE)
- CHROMODORIDIDAE Bergh, 1891 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-DORIDOIDEA [Superfamily])
- Chromodoris, Genus Chromodoris J. Alder & A. Hancock, 1855 (CHROMODORIDIDAE)
- Chromolaichma, syn of: Genus Glossodoris C.G. Ehrenberg, 1831 (CHROMODORIDIDAE)
- Chromolimax, syn of: Genus Limax C. Linnaeus, 1758 (LIMACIDAE)
- chromosoma, Anteaeolidiella chromosoma (T.D.A. Cockerell & C.N.E. Eliot, 1905) - (AEOLIDIIDAE)
- Chromotis, syn of: Genus Tricolia A. Risso, 1826 (PHASIANELLIDAE)
- CHRONIDAE Thiele, 1931 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-GASTRODONTOIDEA [Superfamily])
- Chronoceryx, syn of: Genus Microcystina O.A.L. Mörch, 1872 (ARIOPHANTIDAE)
- Chronos, Genus Chronos G.C. Robson, 1914 (CHRONIDAE)
- chronus, Proeccyliopterus chronus (Walcott, 1912 †) - (PELAGIELLIDAE) (FOSSIL)
- chrydaea, Maorimactra chrydaea (H.H. Suter, 1911 †) - (MACTRIDAE) (FOSSIL)
- chrysacme, Arinia chrysacme O.F. von Möllendorff, 1895 - (DIPLOMMATINIDAE)
- chrysacme, Georissa chrysacme O.F. von Möllendorff, 1900 - (HYDROCENIDAE)
- chrysacme, Neocyclotus chrysacme (P. Bartsch & J.P.E. Morrison, 1942) - (NEOCYCLOTIDAE)
- chrysalchyma, Dentimargo chrysalchyma J.C. Melvill & R. Standen, 1903 - syn of: Dentimargo alchymista (J.C. Melvill & R. Standen, 1903) - (MARGINELLIDAE)
- Chrysalida, syn of: Genus Chrysallida P.P. Carpenter, 1857 (PYRAMIDELLIDAE)
- chrysalida, Rissoa chrysalida A.C. Chapman & C.J. Gabriel, 1914 † - (RISSOIDAE) (FOSSIL)
- chrysalidiformis, Chrysallis chrysalidiformis (G.B. I Sowerby, 1833) - (BRADYBAENIDAE)
- chrysalidiformis camorongana, Chrysallis chrysalidiformis camorongana P. Bartsch, 1932 - (BRADYBAENIDAE)
- chrysalidiformis fuscata, Chrysallis chrysalidiformis fuscata P. Bartsch, 1932 - (BRADYBAENIDAE)
- chrysalidiformis jayi, Chrysallis chrysalidiformis jayi P. Bartsch, 1932 - (BRADYBAENIDAE)
- chrysalidiformis perpusilla, Chrysallis chrysalidiformis perpusilla P. Bartsch, 1932 - (BRADYBAENIDAE)
- Chrysalidomilax, syn of: Genus Hyrcanolestes H.R. Simroth, 1901 (TRIGONOCHLAMYDIDAE)
- chrysalidus, Botelloides chrysalidus (A.C. Chapman & C.J. Gabriel, 1914) - (TROCHIDAE)
- chrysalidus kendricki, Botelloides chrysalidus kendricki W.F. Ponder, 1985 - (TROCHIDAE)
- chrysaliformis, Chrysallis chrysaliformis G.B. I Sowerby, 1833 - syn of: Chrysallis chrysalidiformis (G.B. I Sowerby, 1833) - (BRADYBAENIDAE)
- Chrysalis, syn of: Genus Chrysallis J.A. Albers, 1850 (BRADYBAENIDAE)
- chrysalis, Naesiotus chrysalis (L. Pfeiffer, 1847) - (BULIMULIDAE)
- chrysalis, Cerion chrysalis A.E.J. Férussac, 1832 - syn of: Cerion mumia chrysalis (A.E.J. Férussac in H.H. Beck, 1837) - (CERIONIDAE)
- chrysalis, Cerion mumia chrysalis (A.E.J. Férussac in H.H. Beck, 1837) - (CERIONIDAE)
- chrysalis, Platyrhaphe chrysalis E.R. Sykes, 1902 - (CYCLOPHORIDAE)
- chrysalis, Purpuradusta microdon chrysalis (L.C. Kiener, 1843) - (CYPRAEIDAE)
- chrysalis, Nebularia chrysalis L.A. Reeve, 1844 - (MITRIDAE)
- chrysalis, Sistrum chrysalis G.B. Sowerby, 1904 - syn of: Tenguella granulata (P.L. Duclos, 1832) - (MURICIDAE)
- chrysalis, Pachychilus chrysalis (A. Brot, 1872) - (PACHYCHILIDAE)
- chrysalis, Raphaulus chrysalis (L. Pfeiffer, 1852) - (PUPINIDAE)
- chrysalis, Ianthinopsis chrysalis F.B. Meek & A.H. Worthen, 1867 † - syn of: Soleniscus regularis (Cox, 1857 †) - (SOLENISCIDAE) (FOSSIL)
- chrysalis, Inella chrysalis S. Kosuge, 1963 - (TRIPHORIDAE)
- chrysalis bidens, Cerion mumia chrysalis bidens H.H. Beck, 1837 - (CERIONIDAE)
- chrysalis nympha, Pachychilus chrysalis nympha E.C. Von Martens, 1899 - (PACHYCHILIDAE)
- chrysalis vulneratus, Pachychilus chrysalis vulneratus P.H. Fischer & J.C.H. Crosse, 1892 - syn of: Pachychilus chrysalis (A. Brot, 1872) - (PACHYCHILIDAE)
- chrysallida, Melanella chrysallida (C.B. Adams, 1861) - (EULIMIDAE)
- Chrysallida, Genus Chrysallida P.P. Carpenter, 1857 (PYRAMIDELLIDAE)
- chrysalliformis, Chrysallis chrysalliformis G.B. I Sowerby, 1833 - syn of: Chrysallis chrysalidiformis (G.B. I Sowerby, 1833) - (BRADYBAENIDAE)
- chrysallis, Achatina chrysallis L. Pfeiffer, 1855 - syn of: Leptachatina chrysallis (L. Pfeiffer, 1855) - (ACHATINIDAE)
- chrysallis, Leptachatina chrysallis (L. Pfeiffer, 1855) - (AMASTRIDAE)
- Chrysallis, Genus Chrysallis J.A. Albers, 1850 (BRADYBAENIDAE)
- chrysalloidea, Diastoma chrysalloidea P. Bartsch, 1911 - (DIASTOMATIDAE)
- chrysalloideus, Aesopus chrysalloideus (P.P. Carpenter, 1866) - (COLUMBELLIDAE)
- chrysaloides, Bulimulus chrysaloides (H.A. Pilsbry, 1897) - (BULIMULIDAE)
- chrysaloides, Cerion chrysaloides H.P. Plate, 1907 - (CERIONIDAE)
- chrysaloides, Pseudochrysalis chrysaloides E.A.L. Kittl, 1894 † - (COELOSTYLINIDAE) (FOSSIL)
- chrysaloides, Napaeinus chrysaloides (T.V. Wollaston, 1878) - (ENIDAE)
- chrysaloides, Protoglyptus chrysaloides H.A. Pilsbry, 1897 - syn of: Bulimulus chrysaloides (H.A. Pilsbry, 1897) - (ORTHALICIDAE)
- Chrysame, syn of: Genus Mitra J.B.P.A. Lamarck, 1798 (MITRIDAE)
- Chrysame, syn of: Genus Mitra J.B.P.A. Lamarck, 1798 (MITRIDAE)
- chrysanthema, Cuthona chrysanthema I.S. Roginskaya, 1987 - (FIONIDAE)
- chrysanthemum, Utaturiceras chrysanthemum E. Matsumoto & al., 2003 † - (ACANTHOCERATIDAE) (FOSSIL)
- chrysanthemum, Cleviceras chrysanthemum (Yokoyama, 1904 †) - (HILDOCERATIDAE) (FOSSIL)
- chrysaugeia, Paracharopa chrysaugeia (W.H. Webster, 1904) - (CHAROPIDAE)
- chrysaugeia, Charopa chrysaugeia W.H. Webster, 1904 - syn of: Paracharopa chrysaugeia (W.H. Webster, 1904) - (CHAROPIDAE)
- chrysea, Hyalina chrysea R.B. Watson, 1886 - syn of: Hyalina perla (F.P. Marrat, 1876) - (MARGINELLIDAE)
- chrysea, Marginella chrysea R.B. Watson, 1886 - syn of: Hyalina perla (F.P. Marrat, 1876) - (MARGINELLIDAE)
- chryseis, Helicina chryseis H.B. Tristram, 1862 - syn of: Pyrgodomus microdinus (P.M.A. Morelet, 1851) - (HELICINIDAE)
- chryseis, Leptomaria chryseis (Laube, 1867 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- Chryseofusus, Genus Chryseofusus R. Hadorn & K. Fraussen, 2003 (FASCIOLARIIDAE)
- Chryserpes, Subgenus Synapterpes (Chryserpes) H.A. Pilsbry, 1906 (SUBULINIDAE)
- Chryseulima, syn of: Genus Apicalia A. Adams, 1862 (EULIMIDAE)
- Chrysias, syn of: Genus Zachrysia H.A. Pilsbry, 1894 (CAMAENIDAE)
- chrysis, Succinea chrysis C.A. Westerlund, 1883 - syn of: Novisuccinea strigata (L. Pfeiffer, 1855) - (SUCCINEIDAE)
- Chrysocardium, Genus Chrysocardium Woodring , 1982 † (CARDIIDAE) (FOSSIL)
- Chrysoceras, Genus Chrysoceras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- chrysocestus, Conus chrysocestus S.S. Berry, 1968 - syn of: Dauciconus xanthicus (W.H. Dall, 1910) - (CONIDAE)
- chrysochasma, Troschelviana chrysochasma (F. Poey, 1853) - (HELICINIDAE)
- chrysochasma calloflava, Helicina chrysochasma calloflava A.J. Wagner, 1908 - syn of: Troschelviana erythracea (B.H. Wright in G.B. Sowerby, 1866) - (HELICINIDAE)
- chrysochasma hernandezi, Ustronia chrysochasma hernandezi B.H. Wright, 1908 - syn of: Troschelviana chrysochasma (F. Poey, 1853) - (HELICINIDAE)
- chrysochasma jucunda, Troschelviana chrysochasma jucunda (J. Gundlach in L. Pfeiffer, 1863) - (HELICINIDAE)
- chrysochasma mendozana, Eutrochatella chrysochasma mendozana H.A. Pilsbry - syn of: Troschelviana chrysochasma (F. Poey, 1853) - (HELICINIDAE)
- chrysocheila, Calocochlia chrysocheila G.B. I Sowerby, 1841 - (BRADYBAENIDAE)
- chrysocheila, Tristramia chrysocheila (W.G. Binney, 1851) - (HELICINIDAE)
- chrysocheila, Helicina chrysocheila R.J. Shuttleworth, 1852 - syn of: Tristramia chrysocheila shuttleworthi E.C. Von Martens, 1890 - (HELICINIDAE)
- chrysocheila shuttleworthi, Tristramia chrysocheila shuttleworthi E.C. Von Martens, 1890 - (HELICINIDAE)
- chrysocheila vanattae, Tristramia chrysocheila vanattae H.A. Pilsbry, 1910 - syn of: Tristramia vanattae (H.A. Pilsbry, 1910) - (HELICINIDAE)
- chrysochila, Calocochlia chrysochila G.B. I Sowerby, 1841 - syn of: Calocochlia chrysocheila G.B. I Sowerby, 1841 - (BRADYBAENIDAE)
- chrysochildosa, Zonulispira chrysochildosa D.R. Shasky, 1971 - (PSEUDOMELATOMIDAE)
- chrysochilus, Placostylus pseudocaledonicus chrysochilus J.C.H. Crosse, 1894 - (BOTHRIEMBRYONTIDAE)
- chrysocolla, Neritina chrysocolla (A.A. Gould, 1848) - (NERITIDAE)
- chrysocoma, Nucula chrysocoma W.H. Dall, 1908 - syn of: Nucula profundorum Smith, 1885 - (NUCULIDAE)
- chrysocoma, Nucula chrysocoma W.H. Dall, 1908 - syn of: Nucula profundorum Smith, 1885 - (NUCULIDAE)
- chrysoderma, Doris chrysoderma G.F. Angas, 1864 - (DORIDIDAE)
- chrysodomoides, Siphonofusus chrysodomoides M.M. Schepman, 1911 - syn of: Chryseofusus chrysodomoides (M.M. Schepman, 1911) - (BUCCINIDAE)
- chrysodomoides, Chryseofusus chrysodomoides (M.M. Schepman, 1911) - (FASCIOLARIIDAE)
- chrysodomoides, Fusus chrysodomoides M.M. Schepman, 1911 - syn of: Chryseofusus chrysodomoides (M.M. Schepman, 1911) - (FASCIOLARIIDAE)
- chrysodomoides, Fusinus chrysodomoides M.M. Schepman, 1911 - syn of: Chryseofusus chrysodomoides (M.M. Schepman, 1911) - (FASCIOLARIIDAE)
- Chrysodomus, syn of: Genus Neptunea P.F. Röding, 1798 (BUCCINIDAE)
- Chrysodon, syn of: Genus Pleurodonte G. Fischer von Waldheim, 1807 (PLEURODONTIDAE)
- chrysogona, Humboldtiana chrysogona H.A. Pilsbry, 1948 - (HUMBOLDTIANIDAE)
- chrysogona, Tellina chrysogona W.H. Dall, 1908 - (TELLINIDAE)
- chrysoides, Cerion chrysoides H.P. Plate, 1907 - syn of: Cerion chrysaloides H.P. Plate, 1907 - (CERIONIDAE)
- chrysoides, Oliva irisans chrysoides P. Dautzenberg, 1927 - (OLIVIDAE)
- chrysolaemus, Trochus chrysolaemus E.C. Von Martens, 1880 - syn of: Priotrochus goudoti (P. Fischer, 1878) - (TROCHIDAE)
- chrysolaemus, Priotrochus chrysolaemus E.C. Von Martens, 1880 - syn of: Priotrochus goudoti (P. Fischer, 1878) - (TROCHIDAE)
- chrysolamea, Monilea chrysolamea E.C. Von Martens, 1880 - syn of: Priotrochus goudoti (P. Fischer, 1878) - (TROCHIDAE)
- chrysoleuca, Daphnella chrysoleuca (J.C. Melvill, 1923) - (RAPHITOMIDAE)
- chrysolitha, Mangilia chrysolitha J.C. Melvill & R. Standen, 1896 - syn of: Kermia punctifera (A. Garrett, 1873) - (MANGELIIDAE)
- chrysolitha, Kermia chrysolitha J.C. Melvill & R. Standen, 1896 - syn of: Kermia punctifera (A. Garrett, 1873) - (RAPHITOMIDAE)
- chrysolitha, Triphora chrysolitha E.A. Kay, 1979 - (TRIPHORIDAE)
- chrysoma, Ancilla chrysoma R.N. Kilburn, 1981 - (ANCILLARIIDAE)
- chrysoma, Retusa chrysoma R.F. Burn in R.F. Burn & K.N. Bell, 1974 - (RETUSIDAE)
- chrysomallis, Theba chrysomallis W.A. Lindholm, 1922 - syn of: Harmozica selecta (B. Klika, 1894) - (HELICIDAE)
- Chrysomallon, Genus Chrysomallon C. Chen, K. Linse, P.R. Copley & B. Rogers, 2015 (PELTOSPIRIDAE)
- chrysomallum, Bittium chrysomallum J.C. Melvill, 1901 - (CERITHIIDAE)
- chrysomela, Barleeia chrysomela J.C. Melvill & R. Standen, 1896 - (BARLEEIIDAE)
- chrysomela, Leptaxis chrysomela (L. Pfeiffer, 1848) - (HYGROMIIDAE)
- chrysomela fluctuosa, Leptaxis chrysomela fluctuosa R.T. Lowe, 1852 - (HYGROMIIDAE)
- chrysomelas, Drymaeus chrysomelas E.C. Von Martens, 1867 - (BULIMULIDAE)
- chrysomelas crebristriga, Drymaeus chrysomelas crebristriga E.C. Von Martens, 1867 - (BULIMULIDAE)
- chrysomelas raristriga, Drymaeus chrysomelas raristriga E.C. Von Martens, 1867 - (BULIMULIDAE)
- chrysomelina, Persicula chrysomelina (J.H. Redfield, 1848) - (CYSTISCIDAE)
- chrysomella, Leptaxis chrysomella L. Pfeiffer, 1848 - syn of: Leptaxis chrysomela (L. Pfeiffer, 1848) - (HYGROMIIDAE)
- chrysopelex, Gymnobela chrysopelex (K.H. Barnard, 1963) - (RAPHITOMIDAE)
- chrysophaea, Erronea chrysophaea J.C. Melvill, 1888 - syn of: Erronea errones (C. Linnaeus, 1758) - (CYPRAEIDAE)
- chrysoplecta, Oliva chrysoplecta B. Tursch & D. Greifeneder, 1989 - (OLIVIDAE)
- chrysoplex, Theta chrysoplex K.H. Barnard, 1963 - (RAPHITOMIDAE)
- Chrysopseudodon, Subgenus Pseudodon (Chrysopseudodon) Haas, 1920 (UNIONIDAE)
- chrysopsis, Caspiohydrobia chrysopsis (C.M. Kolesnikov, 1947) - (HYDROBIIDAE)
- chrysoraphe, Cryptozona chrysoraphe O.F. von Möllendorff - (ARIOPHANTIDAE)
- chrysoraphe krejcii, Cryptozona chrysoraphe krejcii F. Haas - (ARIOPHANTIDAE)
- chrysorroyatissense, Deroceras chrysorroyatissense W. Rähle, 1984 - (AGRIOLIMACIDAE)
- chrysosticta, Corolla chrysosticta (F.H. Troschel, 1854) - (CYMBULIIDAE)
- chrysostoma, Eburna chrysostoma G.B. II Sowerby, 1866 - syn of: Babylonia spirata (C. Linnaeus, 1758) - (ANCILLARIIDAE)
- chrysostoma, Babylonia chrysostoma G.B. II Sowerby, 1866 - syn of: Babylonia spirata (C. Linnaeus, 1758) - (BABYLONIIDAE)
- chrysostoma, Auris chrysostoma S. Moricand, 1836 - (BULIMULIDAE)
- chrysostoma, Bivetopsia chrysostoma (G.B. I Sowerby, 1832) - (CANCELLARIIDAE)
- chrysostoma, Erronea ovum chrysostoma F.A. Schilder, 1927 - (CYPRAEIDAE)
- chrysostoma, Ustronia chrysostoma R.J. Shuttleworth in L. Pfeiffer - syn of: Ustronia sloanii (A.V.M.D. D'Orbigny, 1842) - (HELICINIDAE)
- chrysostoma, Eutrochatella chrysostoma F. Poey, 1853 - syn of: Troschelviana chrysochasma (F. Poey, 1853) - (HELICINIDAE)
- chrysostoma, Lucina chrysostoma R.A. Philippi, 1845 - syn of: Anodontia alba J.H.F. Link, 1807 - (LUCINIDAE)
- chrysostoma, Anodontia chrysostoma R.A. Philippi, 1845 - syn of: Anodontia alba J.H.F. Link, 1807 - (LUCINIDAE)
- chrysostoma, Lucina chrysostoma R.A. Philippi, 1845 - syn of: Anodontia alba J.H.F. Link, 1807 - (LUCINIDAE)
- chrysostoma, Nebularia chrysostoma (W.J. Broderip, 1836) - (MITRIDAE)
- chrysostoma, Vokesimurex chrysostoma (G.B. II Sowerby, 1834) - (MURICIDAE)
- chrysostoma, Semiricinula chrysostoma (G.P. Deshayes, 1844) - (MURICIDAE)
- chrysostoma, Ricinula chrysostoma L.A. Reeve, 1846 - syn of: Morula biconica (H.M.D. de Blainville, 1832) - (MURICIDAE)
- chrysostoma, Nerita chrysostoma C.A. Récluz, 1841 - (NERITIDAE)
- Chrysostoma, Genus Chrysostoma W.J. Swainson, 1840 (TROCHIDAE)
- chrysostoma, Turbo chrysostoma C. Linnaeus, 1758 - syn of: Turbo chrysostomus C. Linnaeus, 1758 - (TURBINIDAE)
- chrysostoma, Cymbiola chrysostoma (W.J. Swainson, 1824) - (VOLUTIDAE)
- chrysostoma bellus, Vokesimurex chrysostoma bellus (L.A. Reeve, 1845) - (MURICIDAE)
- chrysostoma jucunda, Eutrochatella chrysostoma jucunda J. Gundlach in L. Pfeiffer, 1863 - syn of: Troschelviana chrysochasma jucunda (J. Gundlach in L. Pfeiffer, 1863) - (HELICINIDAE)
- chrysostoma swainsoni, Auris chrysostoma swainsoni (L. Pfeiffer, 1845) - (BULIMULIDAE)
- chrysostomum, Buccinum chrysostomum P.F. Röding, 1798 - syn of: Tritia reticulata (C. Linnaeus, 1758) - (BUCCINIDAE)
- chrysostomus, Euprotomus chrysostomus (J.T. Kuroda, 1942) - (STROMBIDAE)
- chrysostomus, Turbo chrysostomus C. Linnaeus, 1758 - (TURBINIDAE)
- chrysostomus, Marmarostoma chrysostomus J.F. Gmelin, 1791 - syn of: Turbo chrysostomus C. Linnaeus, 1758 - (TURBINIDAE)
- chrysostricta, Gleba chrysostricta F.H. Troschel, 1854 - syn of: Corolla chrysosticta (F.H. Troschel, 1854) - (CYMBULIIDAE)
- chrysothemis, Borsonellopsis chrysothemis (W.H. Dall, 1919) - (BORSONIIDAE)
- chrysothemis, Cryptogemma chrysothemis W.H. Dall, 1919 - syn of: Borsonellopsis chrysothemis (W.H. Dall, 1919) - (TURRIDAE)
- chrysotoxa, Turritella chrysotoxa J.R. le B. Tomlin, 1925 - (TURRITELLIDAE)
- chrysotricha, Trichia chrysotricha O. Böttger, 1888 - syn of: Euomphalia aristata (I. Krynicki, 1836) - (HYGROMIIDAE)
- chrysozona, Mormula chrysozona (E.C. Von Martens, 1880) - (PYRAMIDELLIDAE)
- chrystallodes, Diplommatina chrystallodes J.F. Quadras & O.F. von Möllendorff, 1896 - (DIPLOMMATINIDAE)
- Chrystella, Genus Chrystella C.F. Laseron, 1956 (PICKWORTHIIDAE)
- chrystomatus, Acteon chrystomatus Á. Valdés, 2008 - (ACTEONIDAE)
- CHTENOPTERYGIDAE Grimpe, 1922 - Family (CEPHALOPODA-COLEOIDEA [Subclass]-DECAPODIFORMES [Superorder]-TEUTHIDA [Order]-BATHYTEUTHOIDEA [Superfamily])
- Chtenopteryx, Genus Chtenopteryx J.J.A. Appellöf, 1890 (CHTENOPTERYGIDAE)
- chuangi, Timoclea chuangi E. Fischer-Piette & D. Vukadinovic, 1977 - (VENERIDAE)
- chubbi, Afrocypraea chubbi (Rennie, 1930 †) - (CYPRAEIDAE) (FOSSIL)
- chubutensis, Euphemites chubutensis Sabattini, 1992 † - (EUPHEMITIDAE) (FOSSIL)
- chubutensis, Asketochiton chubutensis Hoare & Sabattini, 2000 † - (LEPTOCHITONIDAE) (FOSSIL)
- chubutensis, Anulifera chubutensis Ferrari, 2013 † - (PROTORCULIDAE) (FOSSIL)
- chubutensis, Sueroa chubutensis (González, 1969 †) - (SANGUINOLITIDAE) (FOSSIL)
- Chuchleconus, Genus Chuchleconus Frýda, 1998 † (GASTROPODA INCERTAE SEDIS) (FOSSIL)
- Chuchlina, syn of: Genus Auriptygma Perner, 1903 † (MEEKOSPIRIDAE) (FOSSIL)
- CHUCHLINIDAE Frýda & Bandel, 1997 † - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-PERUNELOIDEA [Superfamily]) (FOSSIL)
- chucksnelli, Fusinus chucksnelli Callomon & Snyder, 2017 - (FASCIOLARIIDAE)
- chuckwallana, Micrarionta chuckwallana G. Willett, 1929 - (HELMINTHOGLYPTIDAE)
- chudeaui, Limicolaria chudeaui J. Germain, 1920 - syn of: Limicolaria kambeul chudeaui (J. Germain, 1920) - (ACHATINIDAE)
- chudeaui, Limicolaria kambeul chudeaui (J. Germain, 1920) - (ACHATINIDAE)
- chudeaui, Corbula chudeaui P. Dautzenberg, 1910 - syn of: Corbula striatissima É. Lamy, 1941 - (CORBULIDAE)
- chudeaui, Gibberula chudeaui (A.R.J.B. Bavay in P. Dautzenberg, 1910) - (CYSTISCIDAE)
- chudeaui, Sculptiferussacia chudeaui (J. Germain, 1911) - (FERUSSACIIDAE)
- chudeaui, Theba chudeaui (J. Germain, 1908) - (HELICIDAE)
- chudeaui, Deltoidonautilus chudeaui (Douville, 1920 †) - (HERCOGLOSSIDAE) (FOSSIL)
- chudeaui, Marginella chudeaui A.R.J.B. Bavay, 1910 - syn of: Gibberula chudeaui (A.R.J.B. Bavay in P. Dautzenberg, 1910) - (MARGINELLIDAE)
- chudeaui, Ferrissia chudeaui J. Germain, 1917 - (PLANORBIDAE)
- chudeaui, Tellina chudeaui P. Dautzenberg - (TELLINIDAE)
- chudeaui, Coelatura aegyptiaca chudeaui J. Germain, 1906 - (UNIONIDAE)
- chudleighensis, Pleurotomaria chudleighensis Whidborne, 1889 † - syn of: Agniesella chudleighensis (Whidborne, 1889 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- chudleighensis, Agniesella chudleighensis (Whidborne, 1889 †) - (PORTLOCKIELLIDAE) (FOSSIL)
- chuenringorum, Alinda biplicata chuenringorum (H. Tschapeck, 1890) - (CLAUSILIIDAE)
- chui, Trigonostoma chui T.C. Yen, 1936 - (CANCELLARIIDAE)
- chuika, Fruticicola stoliczkana chuika (R.V. Egorov, 1997) - (BRADYBAENIDAE)
- Chuiliella, Genus Chuiliella Gubanov & Peel, 2001 † (HELCIONELLIDAE) (FOSSIL)
- chukchensis, Physa chukchensis Y.I. Starobogatov & L.L. Budnikova, 1976 - (PHYSIDAE)
- chukchensis, Pisidium chukchensis L.A. Prozorova, 1988 - syn of: Pisidium dilatatum C.A. Westerlund, 1897 - (SPHAERIIDAE)
- chukchii, Retusa chukchii E.M. Chaban, 2008 - (RETUSIDAE)
- chukotica, Megacardita chukotica A.M. Popov, 1983 † - (CARDITIDAE) (FOSSIL)
- chulgunensis, Spisula chulgunensis (L. Krishtofovich, 1947 †) - (MACTRIDAE) (FOSSIL)
- chulgunensis, Liostrea chulgunensis V.N. Sinelnikova, 1997 † - (OSTREIDAE) (FOSSIL)
- Chulitnacula, Genus Chulitnacula Frýda & Blodgett, 2001 † (PROTORCULIDAE) (FOSSIL)
- Chuluaria, Genus Chuluaria Waterhouse, 2000 † (PTERINOPECTINIDAE) (FOSSIL)
- chulucana, Euspira chulucana A.A. Olsson, 1931 † - (NATICIDAE) (FOSSIL)
- chumazensis, Schartymites chumazensis Ruzhencev & Bogoslovskaya, 1978 † - (STENOGLAPHYRITIDAE) (FOSSIL)
- Chumazites, Genus Chumazites Ruzhencev & Bogoslovskaya, 1978 † (RHYMMOCERATIDAE) (FOSSIL)
- chumi, Prunum chumi J. Espinosa & J.A. Ortea, 2000 - (MARGINELLIDAE)
- chundongensis, Clisospira chundongensis T. Kobayashi, 1931 † - (CLISOSPIRIDAE) (FOSSIL)
- Chunella, syn of: Genus Japetella W.E. Hoyle, 1885 (BOLITAENIDAE)
- chunfui, Cardiomya chunfui T.C. Lan, 2000 - syn of: Cardiomya alcocki (E.A. Smith, 1894) - (CUSPIDARIIDAE)
- chunfui, Scabrotrophon chunfui R. Houart & T.C. Lan, 2001 - (MURICIDAE)
- chunfuleei, Calliotropis chunfuleei (M. Chino, 2014) - (CALLIOTROPIDAE)
- chunfuleei, Adamsenida chunfuleei M. Chino, 2014 - syn of: Calliotropis chunfuleei (M. Chino, 2014) - (CALLIOTROPIDAE)
- chungweiense, Eumorphoceras chungweiense Liang, 1957 † - (GIRTYOCERATIDAE) (FOSSIL)
- chuni, Pleurophyllidia chuni (K.H.J. Thiele, 1925) - (ARMINIDAE)
- chuni, Armina chuni K.H.J. Thiele, 1925 - syn of: Pleurophyllidia chuni (K.H.J. Thiele, 1925) - (ARMINIDAE)
- chuni, Histiochromius chuni G.J. Pfeffer, 1912 - (BRACHIOTEUTHIDAE)
- chuni, Calliostoma chuni (E.C. Von Martens, 1903) - (CALLIOSTOMATIDAE)
- chuni, Calliotropis chuni (E.C. Von Martens, 1904) - (CALLIOTROPIDAE)
- chuni, Chtenopteryx chuni G.J. Pfeffer, 1912 - (CHTENOPTERYGIDAE)
- chuni, Anachis chuni (K.H.J. Thiele, 1925) - (COLUMBELLIDAE)
- chuni, Cardiomya chuni (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (CUSPIDARIIDAE)
- chuni, Dentalium chuni H.P. Plate, 1908 - syn of: Fissidentalium transversostriatum M. Boissevain, 1906 - (DENTALIIDAE)
- chuni, Pfefferiteuthis chuni (K.N. Nesis, 1982) - (ENOPLOTEUTHIDAE)
- chuni, Apicalia chuni K.H.J. Thiele, 1925 - (EULIMIDAE)
- chuni, Fusinus chuni (E.C. Von Martens, 1904) - (FASCIOLARIIDAE)
- chuni, Cadulus chuni S.G.A. Jaeckel, 1932 - (GADILIDAE)
- chuni, Histioteuthis chuni G.J. Pfeffer, 1912 - syn of: Histioteuthis hoylei (C. Goodrich, 1896) - (HISTIOTEUTHIDAE)
- chuni, Limopsis chuni K.H.J. Thiele & S.G.A. Jaeckel, 1931 - (LIMOPSIDAE)
- chuni, Bela chuni K.H.J. Thiele, 1925 - (MANGELIIDAE)
- chuni, Octopus chuni G.J. Von Grimpe, 1922 - (OCTOPODIDAE)
- chuni, Comitas chuni (E.C. Von Martens, 1901) - (PSEUDOMELATOMIDAE)
- chuni, Tenagodus chuni (K.H.J. Thiele, 1925) - (SILIQUARIIDAE)
- chuni, Solariella chuni K.H.J. Thiele, 1925 - syn of: Solariella intermissa K.H.J. Thiele, 1925 - (SOLARIELLIDAE)
- chuni, Laubiericoncha chuni (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (VESICOMYIDAE)
- chuni, Callogonia chuni K.H.J. Thiele & S.G.A. Jaeckel, 1931 - syn of: Laubiericoncha chuni (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (VESICOMYIDAE)
- chunii, Enoploteuthis chunii M. Ishikawa, 1914 - (ENOPLOTEUTHIDAE)
- Chunioteuthis, syn of: Genus Stauroteuthis A.E. Verrill, 1879 (CIRROTEUTHIDAE)
- Chuniscala, Genus Chuniscala K.H.J. Thiele, 1928 (EPITONIIDAE)
- Chunoteuthis, syn of: Genus Bathyteuthis W.E. Hoyle, 1885 (BATHYTEUTHIDAE)
- Chunula, syn of: Genus Granigyra W.H. Dall, 1889 (SEGUENZIOIDEA (UNASSIGNED))
- chuoi, Cancilla chuoi Huang & Salisbury, 2017 - (MITRIDAE)
- chuongi, Camaena chuongi Thach, 2016 - (CAMAENIDAE)
- chupaderae, Pyrgulopsis chupaderae D.W. Taylor, 1987 - (HYDROBIIDAE)
- chupingense, Rhiostoma chupingense J.R. le B. Tomlin, 1938 - (CYCLOPHORIDAE)
- churavtsovi, Kolymia churavtsovi Biakov, 2012 † - (KOLYMIIDAE) (FOSSIL)
- churchi, Hauericeras churchi Anderson, 1958 † - (DESMOCERATIDAE) (FOSSIL)
- churchi, Monadenia churchi G.D. Hanna & A.G. Smith, 1933 - (MONADENIIDAE)
- churchi, Odostomia churchi A.G. Smith & W.J. Gordon, 1948 - (PYRAMIDELLIDAE)
- churchillense, Kinaschukoceras churchillense R.N. Nelson † - (TARPHYCERIDA (UNASSIGNED)) (FOSSIL)
- churchilliana, Archachatina churchilliana (J.C. Melvill & J.H. Ponsonby, 1895) - (ACHATINIDAE)
- Churchlina, Genus Churchlina Fryda & Manda, 1997 † (CHUCHLINIDAE) (FOSSIL)
- churea, Terebra churea G.B. Campbell, 1964 - (TEREBRIDAE)
- churia, Turbonilla churia P. Bartsch, 1926 - (PYRAMIDELLIDAE)
- churinceanus, Mexipyrgus churinceanus D.W. Taylor, 1966 - syn of: Mexipyrgus carranzae D.W. Taylor, 1966 - (COCHLIOPIDAE)
- churkini, Spinulrichospira churkini Blodgett, 1992 † - (GOSSELETINIDAE) (FOSSIL)
- churkini, Trochonemella churkini Rohr & Blodgett, 1985 † - (TROCHONEMATIDAE) (FOSSIL)
- Churkites, Genus Churkites Okuneva , 1990 † (ARCTOCERATIDAE) (FOSSIL)
- chusaki, Conus chusaki A.J. Da Motta, 1978 - syn of: Pionoconus striatus (C. Linnaeus, 1758) - (CONIDAE)
- chusani, Purpura chusani J.F.T. Eydoux & L.F.A. Souleyet, 1852 - syn of: Reishia luteostoma (H.S. Holten, 1803) - (MURICIDAE)
- chusgonensis, Bostryx chusgonensis W.K. Weyrauch, 1960 - (BULIMULIDAE)
- chusgonensis sipas, Bostryx chusgonensis sipas A.S.H. Breure & V. Mogollón Avilla, 2010 - (BULIMULIDAE)
- Chuticeras, Genus Chuticeras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- Chutoceras, Genus Chutoceras Becker & House, 2000 † (ACANTHOCLYMENIIDAE) (FOSSIL)
- chuttina, Asmunda chuttina E. Saurin, 1959 - (PYRAMIDELLIDAE)
- chuva, Nuculana chuva J.E. Gray in J.B. Jukes, 1847 - syn of: Nuculana crassa (R.B. Hinds, 1843) - (NUCULANIDAE)
- Chuvashovia, Genus Chuvashovia Doguzhaeva , 2002 † (BACTRITIDAE) (FOSSIL)
- chuviscarae, Tryonia chuviscarae R. Hershler, H.P. Liu & J.J. Landye, 2011 - (COCHLIOPIDAE)
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