- davaoensis, Oliva davaoensis E.J. Petuch & D.M. Sargent, 1986 - syn of: Oliva concavospira G.B. III Sowerby, 1914 - (OLIVIDAE)
- davaoensis, Bankia davaoensis P. Bartsch, 1927 - syn of: Bankia barthelowi P. Bartsch, 1927 - (TEREDINIDAE)
- davaoensis, Lyria davaoensis S. Kosuge, 1980 † - syn of: Plicolyria planicostata (G.B. III Sowerby, 1903 †) - (VOLUTIDAE) (FOSSIL)
- Davaricella, syn of: Genus Divaricella E.C. Von Martens, 1880 (LUCINIDAE)
- davebehrensi, Doriopsilla davebehrensi Hoover, Lindsay, Goddard & Valdés, 2015 - (DENDRODORIDIDAE)
- davegibbsi, Coelotrochus davegibbsi (B.A. Marshall, 1998) - (TROCHIDAE)
- davegibbsi, Alcithoe davegibbsi M.R. Hart, 1999 - (VOLUTIDAE)
- davenportii, Polycerella davenportii F.N. Balch, 1899 - syn of: Polycerella emertoni (A.E. Verrill, 1880) - (POLYCERIDAE)
- daveyensis, Helix daveyensis C.M.D.E. Legrand, 1871 - syn of: Thryasona diemenensis (J.C. Cox, 1868) - (HELICIDAE)
- daveyensis, Phrantela daveyensis W.F. Ponder & K.B. Clark, 1993 - (HYDROBIIDAE)
- daveyensis tristis, Phrantela daveyensis tristis W.F. Ponder & K.B. Clark, 1993 - (HYDROBIIDAE)
- daveyi, Parahoplites daveyi Casey, 1965 † - (PARAHOPLITIDAE) (FOSSIL)
- davidana, Saccella davidana A.A. Olsson, 1942 † - (NUCULANIDAE) (FOSSIL)
- Davidaschvilia, Subgenus Lutetia (Davidaschvilia) Merklin, 1950 † (LUTETIIDAE) (FOSSIL)
- davidboschi, Bursa davidboschi A.G. Beu, 1987 - (BURSIDAE)
- davidbowieii, Jorunna davidbowieii Ortea & Moro, 2016 - (DISCODORIDIDAE)
- davidensis, Costavarix davidensis (H.A. Pilsbry, 1907) - (OLEACINIDAE)
- davidi, Macrochlamys davidi (G.P. Deshayes, 1874) - (ARIOPHANTIDAE)
- davidi, Euphaedusa gemina davidi H. Nordsieck, 2001 - (CLAUSILIIDAE)
- davidi, Subzebrinus davidi (G.P. Deshayes, 1870) - (ENIDAE)
- davidi, Apiocypraea davidi (C.F. Fontannes, 1880 †) - (EOCYPRAEIDAE) (FOSSIL)
- davidi, Straparollus davidi Dun & W.H. Benson, 1920 † - (EUOMPHALIDAE) (FOSSIL)
- davidi, Myloceras davidi Whitehouse, 1926 † - (LABECERATIDAE) (FOSSIL)
- davidi, Volvarina davidi J. Espinosa, J.A. Ortea & Y.L. Diez, 2015 - (MARGINELLIDAE)
- davidi, Barnea davidi (G.P. Deshayes, 1874) - (PHOLADIDAE)
- davidi, Waikura davidi J. Marwick, 1943 † - (PYRAMIDELLIDAE) (FOSSIL)
- davidi, Mackinnonia davidi Bengtson & al., 1990 † - syn of: Mackinnonia rostrata (W.C. Zhou & Q. Xiao, 1984 †) - (TRENELLIDAE) (FOSSIL)
- Davidia, syn of: Genus Actinodonta Philipps, 1848 † (ACTINODONTIDAE) (FOSSIL)
- davidia, Cochlicopa davidia C.M.F. Ancey, 1882 - (COCHLICOPIDAE)
- davidiana, Cristataria strangulata davidiana (J.R. Bourguignat, 1868) - (CLAUSILIIDAE)
- davidiana, Xerocrassa davidiana (J.R. Bourguignat, 1863) - (HYGROMIIDAE)
- davidiana picardi, Xerocrassa davidiana picardi F. Haas, 1933 - (HYGROMIIDAE)
- Davidiceras, Genus Davidiceras Vermeulen, 2003 † (BARREMITIDAE) (FOSSIL)
- davidis, Pojetaconcha davidis (Dun, 1907 †) - (BRANSONIIDAE) (FOSSIL)
- davidis, Harpa davidis P.F. Röding, 1798 - (HARPIDAE)
- davidis, Limopsis davidis C. Hedley, 1899 - (LIMOPSIDAE)
- davidis, Turbo davidis P.F. Röding, 1798 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (TURBINIDAE)
- davidis, Myonia davidis Dun, 1932 † - syn of: Pachymyonia morrisi (R. Etheridge jr., 1919 †) - (VACUNELLIDAE) (FOSSIL)
- davidjimenezi, Oestophora davidjimenezi J.S. Torres & J. Ahuir, 2011 - (TRISSEXODONTIDAE)
- davidpenasi, Turbonilla davidpenasi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- davidrolani, Turbonilla davidrolani A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- davidsoni, Anahamulina davidsoni (Coquand in Matheron, 1879 †) - (ANAHAMULINIDAE) (FOSSIL)
- davidsoni, Anisocardia davidsoni (J. Lycett, 1863 †) - (ARCTICIDAE) (FOSSIL)
- davidsoni, Arcturellina davidsoni G.P. Deshayes, 1858 - syn of: Arcturellina sulcata davidsoni (G.P. Deshayes, 1858 †) - (CARDITIDAE)
- davidsoni, Arcturellina sulcata davidsoni (G.P. Deshayes, 1858 †) - (CARDITIDAE) (FOSSIL)
- davidsoni, Eucycloscala davidsoni (Laube, 1867 †) - (EUCYCLOSCALIDAE) (FOSSIL)
- davidsoni, Angeisonoceras davidsoni (Barrande, 1870 †) - (GEISONOCERATIDAE) (FOSSIL)
- davidsoni, Exogyra davidsoni Whidborne, 1883 † - (GRYPHAEIDAE) (FOSSIL)
- davidsoni, Hamulina davidsoni Coquand in Matheron, 1879 † - syn of: Anahamulina davidsoni (Coquand in Matheron, 1879 †) - (HAMULINIDAE) (FOSSIL)
- davidsoni, Fimbria davidsoni G.P. Deshayes, 1857 † - (LUCINIDAE) (FOSSIL)
- davidsoni, Coelocaulus davidsoni (Oehlert, 1877 †) - (MURCHISONIIDAE) (FOSSIL)
- davidsoni, Orthoceras davidsoni Barrande, 1870 † - syn of: Angeisonoceras davidsoni (Barrande, 1870 †) - (ORTHOCERATIDAE) (FOSSIL)
- davidsoni, Cyclopecten davidsoni (W.H. Dall, 1897) - (PROPEAMUSSIIDAE)
- davidsoni, Eoradiolites davidsoni (J. Hill, 1893 †) - (RADIOLITIDAE) (FOSSIL)
- davidsoni, Trochoceras davidsoni Barrande, 1865 † - (RUTOCERATIDAE) (FOSSIL)
- davidsoni, Turbo davidsoni Laube, 1867 † - syn of: Eucycloscala davidsoni (Laube, 1867 †) - (TURBINIDAE) (FOSSIL)
- davidsoniana, Amplirhagada davidsoniana F. Köhler, 2011 - (CAMAENIDAE)
- davidsonianus, Koninckites davidsonianus (de Koninck, 1863 †) - (BEYRICHITIDAE) (FOSSIL)
- daviei, Scintillona daviei B.S. Morton, 2008 - (GALEOMMATIDAE)
- daviesi, Pupa daviesi R.N. Kilburn, 1975 - (ACTEONIDAE)
- daviesi, Anadara daviesi Mukerjee, 1939 † - (ARCIDAE) (FOSSIL)
- daviesi, Splendrillia daviesi R.N. Kilburn, 1988 - (DRILLIIDAE)
- daviesi, Anahoplites daviesi (Spath 1925 †) - (HOPLITIDAE) (FOSSIL)
- daviesi, Quenstedtia daviesi W.J. Arkell, 1934 † - (QUENSTEDTIIDAE) (FOSSIL)
- daviesi, Persististrombus daviesi (A. Dey, 1961 †) - (STROMBIDAE) (FOSSIL)
- daviesi, Trapezium daviesi Cox, 1930 † - (TRAPEZIDAE) (FOSSIL)
- daviesi, Turritella daviesi Cox, 1930 † - (TURRITELLIDAE) (FOSSIL)
- daviesi, Fulgoraria daviesi (H.C. Fulton, 1938) - (VOLUTIDAE)
- daviesi, Psephaea daviesi (H.C. Fulton, 1938) - syn of: Fulgoraria daviesi (H.C. Fulton, 1938) - (VOLUTIDAE)
- Davila, Genus Davila J.E. Gray, 1853 (MESODESMATIDAE)
- davilae, Saccella davilae (A.A. Olsson, 1922 †) - (NUCULANIDAE) (FOSSIL)
- davilae, Nucula davilae A.A. Olsson, 1922 † - (NUCULIDAE) (FOSSIL)
- davilae, Lambis davilae P.F. Röding, 1798 - syn of: Lambis truncata (J. Lightfoot, 1786) - (STROMBIDAE)
- davinae, Limopsis davinae C. Esteves, 1984 - (LIMOPSIDAE)
- davisae, Americoliva polpasta davisae (J.W. Durham, 1950) - (OLIVIDAE)
- davisae, Gulella davisae Herbert, 2016 - (STREPTAXIDAE)
- davisense, Mariella davisense A.T. Young, 1958 † - (TURRILITIDAE) (FOSSIL)
- davisensis, Orbobactrites davisensis Mapes, 1979 † - (PARABACTRITIDAE) (FOSSIL)
- davisi, Anchura davisi (L.W. Stephenson, 1941 †) - (APORRHAIDAE) (FOSSIL)
- davisi, Archinacella davisi Wahlman, 1992 † - (ARCHINACELLIDAE) (FOSSIL)
- davisi, Gabbia davisi W.F. Ponder, 2003 - (BITHYNIIDAE)
- davisi, Falsimohnia davisi E.N. Egorova, 1972 - syn of: Falsimohnia innocens (E.A. Smith, 1907) - (BUCCINIDAE)
- davisi, Inaequidens davisi Pojeta & Gilbert-Tomlinson, 1977 † - (CARDIOLARIIDAE) (FOSSIL)
- davisi, Littoridina davisi (G.F. Silva & J.W. Thomé, 1985) - (COCHLIOPIDAE)
- davisi, Doriopsilla davisi J.K. Allan, 1933 - syn of: Doriopsilla miniata (J. Alder & A. Hancock, 1864) - (DENDRODORIDIDAE)
- davisi, Triendoceras davisi M.A. Frey, 1995 † - (ENDOCERATIDAE) (FOSSIL)
- davisi, Boetersiella davisi (B. Arconada & M.A. Ramos, 2000) - (HYDROBIIDAE)
- davisi, Pyrgulopsis davisi D.W. Taylor, 1987 - (HYDROBIIDAE)
- davisi, Lorabela davisi (C. Hedley, 1916) - (MANGELIIDAE)
- davisi, Meekoceras davisi (Mathews, 1929 †) - (MEEKOCERATIDAE) (FOSSIL)
- davisi, Wutinoceras davisi Flower, 1968 † - (POLYDESMIIDAE) (FOSSIL)
- davisi, Karelainia davisi (R.A.M. Brandt, 1968) - (POMATIOPSIDAE)
- davisi, Sphaerium davisi (P. Bartsch, 1908) - (SPHAERIIDAE)
- davisi, Discotropites davisi Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- davisi, Veronicella davisi J.W. Thomé, F.N. Santos & L. Pedott, 1996 - (VERONICELLIDAE)
- davisiana, Amastra davisiana C.M. Cooke, 1908 - (AMASTRIDAE)
- davisiana, Glabella davisiana F.P. Marrat, 1877 - (MARGINELLIDAE)
- Davisiana, Genus Davisiana E.N. Egorova, 1972 (SEGUENZIIDAE)
- davisoni, Ditropopsis davisoni T.S. Liew, J.J. Vermeulen & al., 2015 - (CYCLOPHORIDAE)
- davitaschvilii, Valenciennius davitaschvilii Taktakishvili, 1967 † - (LYMNAEIDAE) (FOSSIL)
- davoei, Prodactylioceras davoei (J. de C. Sowerby, 1822 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- davolii, Leptochiton davolii (G.F. Laghi, 2005 †) - (LEPTOCHITONIDAE) (FOSSIL)
- davoustana, Ovactaeonina davoustana (A.V.M.D. D'Orbigny, 1852 †) - (ACTEONINIDAE) (FOSSIL)
- davousti, Guerangeria davousti Oehlert, 1880 † - (MODIOMORPHIDAE) (FOSSIL)
- davoustiana, Nerineopsis davoustiana (Cotteau, 1854 †) - (METACERITHIIDAE) (FOSSIL)
- davouxi, Euaspidoceras davouxi J.J. Bert & Bonnot, 2004 † - (ASPIDOCERATIDAE) (FOSSIL)
- davouxi, Camereiceras davouxi (Delanoy, 1990 †) - (HEMIHOPLITIDAE) (FOSSIL)
- Davouxiceras, Genus Davouxiceras Vermeulen, 2004 † (EMERICICERATIDAE) (FOSSIL)
- Davouxina, Genus Davouxina Vermeulen, 2009 † (ANAHAMULINIDAE) (FOSSIL)
- davrae, Helicella davrae (P.M. Pallary, 1901) - (HYGROMIIDAE)
- davyi, Barroisocaulus davyi (Barrois, 1889 †) - (PTYCHOCAULIDAE) (FOSSIL)
- davyi alpina, Barroisocaulus davyi alpina (Spitz, 1907 †) - (PTYCHOCAULIDAE) (FOSSIL)
- dawbini, Potamopyrgus dawbini A.W.B. Powell, 1955 - (TATEIDAE)
- dawesi, Megalomphala dawesi Peel, 1991 † - (BUCANIIDAE) (FOSSIL)
- dawnae, Volvarina dawnae M. Lussi & G. Smith, 1996 - syn of: Volvarina adela (K.H.J. Thiele, 1925) - (MARGINELLIDAE)
- dawnae, Marginella dawnae W. Liltved & V.G. Millard, 1994 - syn of: Marginella natalcinerea W. Massier, 1993 - (MARGINELLIDAE)
- dawnbrinkae, Prunum dawnbrinkae W. Massier, 1994 - syn of: Hydroginella agulhasensis (K.H.J. Thiele, 1925) - (MARGINELLIDAE)
- dawnbrinkae, Vaughtia dawnbrinkae M. Lussi, 2012 - (MURICIDAE)
- Dawsonella, Genus Dawsonella Bradley, 1874 † (DAWSONELLIDAE) (FOSSIL)
- DAWSONELLIDAE Wenz, 1938 † - Family (GASTROPODA-NERITIMORPHA [Subclass]-CYCLONERITIMORPHA [Order]-HELICINOIDEA [Superfamily]) (FOSSIL)
- dawsonensis, Adclarkia dawsonensis J. Stanisic, 1996 - (CAMAENIDAE)
- dawsonensis, Etheripecten dawsonensis Runnegar & Ferguson, 1969 † - (HETEROPECTINIDAE) (FOSSIL)
- dawsonensis, Vacunella dawsonensis Runnegar, 1967 † - (VACUNELLIDAE) (FOSSIL)
- dawsoni, Cephalaspis dawsoni E.R. Lankester, 1870 † - (CEPHALASPIDAE) (FOSSIL)
- dawsoni, Hungarites dawsoni McLearn, 1948 † - syn of: Lenotropites caurus (McLearn, 1948 †) - (CERATITIDAE) (FOSSIL)
- dawsoni, Pseudouhligella dawsoni (J.J.F. Whiteaves, 1900 †) - (DESMOCERATIDAE) (FOSSIL)
- dawsoni, Helix dawsoni Moore † - (HELICIDAE) (FOSSIL)
- dawsoni, Canavaria dawsoni Smith & Tipper 1996 † - (HILDOCERATIDAE) (FOSSIL)
- dawsoni, Malayites dawsoni McLearn, 1937 † - (JUVAVITIDAE) (FOSSIL)
- dawsoni, Boreacola dawsoni J.G. Jeffreys, 1864 - syn of: Altenaeum dawsoni (J.G. Jeffreys, 1864) - (LASAEIDAE)
- dawsoni, Altenaeum dawsoni (J.G. Jeffreys, 1864) - (MONTACUTIDAE)
- dawsoni, Myophorella dawsoni J.J.F. Whiteaves, 1878 † - (MYOPHORELLIDAE) (FOSSIL)
- dawsoni, Anawasatchites dawsoni Tozer, 1994 † - (PRIONITIDAE) (FOSSIL)
- dawsoni, Archiminolia dawsoni (B.A. Marshall, 1979) - (SOLARIELLIDAE)
- dawsoni, Microgaza dawsoni B.A. Marshall, 1979 - syn of: Archiminolia dawsoni (B.A. Marshall, 1979) - (SOLARIELLIDAE)
- dawsoni, Metathisbites dawsoni (McLearn, 1940 †) - (THISBITIDAE) (FOSSIL)
- dawsoni, Styrites dawsoni Tozer, 1994 † - (TROPICELTITIDAE) (FOSSIL)
- Dawsonia, syn of: Genus Lepidochitona J.E. Gray, 1821 (LEPIDOCHITONIDAE)
- Dawsonoceras, Genus Dawsonoceras Hyatt, 1884 † (DAWSONOCERATIDAE) (FOSSIL)
- DAWSONOCERATIDAE Flower, 1962 † - Family (CEPHALOPODA-ORTHOCERATOIDEA [Subclass]-ORTHOCERIDA [Order]) (FOSSIL)
- Dawsonocerina, Genus Dawsonocerina Horny, 1956 † (DAWSONOCERATIDAE) (FOSSIL)
- dawydoffi, Callochiton dawydoffi B.I. Sirenko, 2012 - (CALLOCHITONIDAE)
- dawydoffi, Cryptoplax dawydoffi E.H.J. Leloup, 1937 - syn of: Cryptoplax larvaeformis (E.J. Burrow, 1815) - (CRYPTOPLACIDAE)
- dawydoffi, Pyrgiscus dawydoffi (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- Daxatina, Genus Daxatina Strand , 1929 † (TRACHYCERATIDAE) (FOSSIL)
- dayenense, Pleuronodoceras dayenense Yang & Yang, 1992 † - (PLEURONODOCERATIDAE) (FOSSIL)
- dayi, Tropaeum dayi Klinger & J. Kennedy, 1977 † - (ANCYLOCERATIDAE) (FOSSIL)
- dayi, Nodicoeloceras dayi (Reynes, 1868 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- dayi, Passaloteuthis dayi H.G. Lang, 1928 † - (PASSALOTEUTHIDIDAE) (FOSSIL)
- dayi, Siphonaria dayi B.R. Allanson, 1958 - (SIPHONARIIDAE)
- Dayiceras, Genus Dayiceras Spath, 1920 † (POLYMORPHITIDAE) (FOSSIL)
- dayingensis, Palaeomutela dayingensis Liang † - (PALAEOMUTELIDAE) (FOSSIL)
- daylesfordensis, Austropyrgus daylesfordensis A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- dayongensis, Synprosphyma franciscana dayongensis (C. Chen & S.Q. Zhang, 1999) - (CLAUSILIIDAE)
- dayriti, Calocochlia dayriti G.H. Barnett, 1989 - (BRADYBAENIDAE)
- dayriti, Boucheticonus dayriti (D. Röckel & A.J. Da Motta, 1983) - (CONIDAE)
- dayriti, Kioconus dayriti D. Röckel & A.J. Da Motta, 1983 - syn of: Boucheticonus dayriti (D. Röckel & A.J. Da Motta, 1983) - (CONIDAE)
- dayritiana, Eclogavena dayritiana (C.N. Cate, 1963) - (CYPRAEIDAE)
- dayritiana, Cypraea dayritiana C.N. Cate, 1963 - syn of: Eclogavena dayritiana (C.N. Cate, 1963) - (CYPRAEIDAE)
- dayritiana mondejarorum, Eclogavena dayritiana mondejarorum E.J. Petuch & R.F. Myers, 2014 - (CYPRAEIDAE)
- daytonense, Platyostoma daytonense Foerste, 1923 † - (PLATYCERATIDAE) (FOSSIL)
- daytonensis, Cyclonema daytonensis Foerste, 1899 † - (PLATYCERATIDAE) (FOSSIL)
- daytonensis, Posidonia daytonensis W.M. Gabb, 1864 † - (POSIDONIIDAE) (FOSSIL)
- dayunensis, Thais dayunensis (C. Chen & Z. You, 2009) - (MURICIDAE)
- dayunensis, Stramonita dayunensis C. Chen & Z. You, 2009 - syn of: Thais dayunensis (C. Chen & Z. You, 2009) - (MURICIDAE)
- dazimonensis, Ena dazimonensis B. Hausdorf, 2001 - (ENIDAE)
- dazueri, Dilataria succineata dazueri (L. Pfeiffer, 1868) - (CLAUSILIIDAE)
- dazuri, Anisus dazuri (O.A.L. Mörch, 1868) - (PLANORBIDAE)
- dazuri nikolensis, Gyraulus dazuri nikolensis W. Dybowski, 1913 - syn of: Anisus nikolensis (W. Dybowski, 1913) - (PLANORBIDAE)
- Dceruska, Genus Dceruska Barrande, 1881 † (MODIOMORPHIDAE) (FOSSIL)
- ddingoii, Sphaerium ddingoii T. Prime, 1862 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- de, Oceanida de Morgan, 1915 † - syn of: Chileutomia subvaricosa R. Tate & A.E.M. Cossmann, 1898 † - (EULIMIDAE) (FOSSIL)
- de, Hiatella de Bellevue, 1802 † - syn of: Hiatella tumulensis Kurushin, 1992 † - (HIATELLIDAE) (FOSSIL)
- dea, Daphnella dea J.C. Melvill, 1904 - (RAPHITOMIDAE)
- Deacheospira, Genus Deacheospira Wagner , 1999 † (GOSSELETINIDAE) (FOSSIL)
- deaconi, Pyrgulopsis deaconi R. Hershler, 1998 - (HYDROBIIDAE)
- deadenense, Trigoniocardia deadenense (Mansfield 1932) † - (CARDIIDAE) (FOSSIL)
- deae, Turbonilla deae (S. Nomura, 1937) - (PYRAMIDELLIDAE)
- deae, Dunkeria deae S. Nomura, 1937 - syn of: Turbonilla deae (S. Nomura, 1937) - (PYRAMIDELLIDAE)
- Deaechospira, Genus Deaechospira Hadding, 1913 † (GOSSELETINIDAE) (FOSSIL)
- deagostinii, Crioceras deagostinii Feruglio, 1937 † - syn of: Protancyloceras deagostinii (Feruglio, 1937 †) - (CRIOCERATITIDAE) (FOSSIL)
- deagostinii, Protancyloceras deagostinii (Feruglio, 1937 †) - (PROTANCYLOCERATIDAE) (FOSSIL)
- dealbata, Helix dealbata T. Say, 1821 - syn of: Rabdotus dealbatus (T. Say, 1821) - (HELICIDAE)
- dealbata, Leptostictea dealbata R.T. Lowe, 1831 - syn of: Leptostictea hartungi (J.A. Albers, 1852) - (HYGROMIIDAE)
- dealbata, Mactrotoma dealbata R. Pulteney, 1799 - syn of: Standella fragilis (J.F. Gmelin, 1791) - (MACTRIDAE)
- dealbata, Eucithara dealbata (R.P.J. Hervier, 1897) - (MANGELIIDAE)
- dealbata, Strigatella dealbata A. Adams, 1853 - syn of: Strigatella pellisserpentis L.A. Reeve, 1844 - (MITRIDAE)
- dealbata, Drupa dealbata L.A. Reeve, 1846 - syn of: Drupella fragum (H.M.D. de Blainville, 1832) - (MURICIDAE)
- dealbata, Nassa dealbata A. Adams, 1853 - syn of: Nassarius pyrrhus (K.T. Menke, 1843) - (NASSARIIDAE)
- dealbata, Olivella dealbata (L.A. Reeve, 1850) - (OLIVELLIDAE)
- dealbata, Oliva oliva dealbata P.F. Röding, 1798 - (OLIVIDAE)
- dealbata, Odostomia dealbata (W. Stimpson, 1851) - (PYRAMIDELLIDAE)
- dealbata, Scrobicularia dealbata J.F. Gmelin, 1791 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- dealbata, Gibbulinella dealbata (P.B. Webb & S. Berthelot, 1833) - (STREPTAXIDAE)
- dealbata, Triphora dealbata (C.B. Adams, 1850) - (TRIPHORIDAE)
- dealbata, Anodonta dealbata H. Drouët, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- dealbata, Venus dealbata J.F. Gmelin, 1791 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (VENERIDAE)
- dealbatum, Heliacus dealbatum R.B. Hinds, 1844 - syn of: Heliacus trochoides (G.P. Deshayes, 1830) - (ARCHITECTONICIDAE)
- dealbatus, Rabdotus dealbatus (T. Say, 1821) - (BULIMULIDAE)
- dealbatus, Lautoconus dealbatus (A. Adams, 1855) - (CONIDAE)
- dealbatus, Faunus dealbatus J.F. Gmelin, 1791 - syn of: Faunus ater (C. Linnaeus, 1758) - (PACHYCHILIDAE)
- dealbatus, Gyraulus dealbatus (A. Braun in Walchner, 1851 †) - (PLANORBIDAE) (FOSSIL)
- dealbatus durangoanus, Rabdotus dealbatus durangoanus E.C. Von Martens, 1893 - syn of: Naesiotus durangoanus (E.C. Von Martens, 1893) - (BULIMULIDAE)
- dealbatus jonesi, Rabdotus dealbatus jonesi W.J. Clench, 1937 - (BULIMULIDAE)
- dealbatus liquabilis, Rabdotus dealbatus liquabilis (L.A. Reeve, 1848) - (BULIMULIDAE)
- dealbatus mooreanus, Rabdotus dealbatus mooreanus (L. Pfeiffer, 1868) - (BULIMULIDAE)
- dealbatus neomexicanus, Rabdotus dealbatus neomexicanus H.A. Pilsbry, 1946 - (BULIMULIDAE)
- dealbatus ozarkensis, Rabdotus dealbatus ozarkensis H.A. Pilsbry & J.H. Ferriss, 1906 - (BULIMULIDAE)
- dealbatus pasonis, Rabdotus dealbatus pasonis H.A. Pilsbry, 1902 - (BULIMULIDAE)
- dealbatus ragsdalei, Rabdotus dealbatus ragsdalei (H.A. Pilsbry, 1890) - (BULIMULIDAE)
- deamasi, Hyalina deamasi J. Espinosa & J.A. Ortea, 2003 - syn of: Hyalina dearmasi J. Espinosa & J.A. Ortea, 2003 - (MARGINELLIDAE)
- deambulans, Pyrgulina deambulans Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- deana, Trochoidea deana J. Berthier, 1884 - syn of: Amandana geyeri (L. Soós, 1926) - (HYGROMIIDAE)
- deani, Cerion deani M. Smith, 1943 - (CERIONIDAE)
- deani, Girtyoceras deani Moore, 1946 † - (GIRTYOCERATIDAE) (FOSSIL)
- deani, Hydrobia deani (Kendall) † - (HYDROBIIDAE) (FOSSIL)
- deaniam, Phasianella deaniam H.A. Pilsbry, 1888 - (PHASIANELLIDAE)
- deaniana, Planispira deaniana J. Ford - (CAMAENIDAE)
- deaniana, Alopia livida deaniana C.M. Cooke, 1922 - (CLAUSILIIDAE)
- deanneae, Mysella deanneae L. Ramorino, 1968 - (MONTACUTIDAE)
- deansi, Leconteites deansi (J.J.F. Whiteaves, 1893 †) - (HOPLITIDAE) (FOSSIL)
- dearborni, Parathyasira dearborni (D. Nicol, 1965) - (THYASIRIDAE)
- dearmasi, Hyalina dearmasi J. Espinosa & J.A. Ortea, 2003 - (MARGINELLIDAE)
- dearmata, Pteropurpura dearmata (N.H. Odhner, 1922) - (MURICIDAE)
- dearmata benderskyi, Pteropurpura dearmata benderskyi W.K. Emerson & D'Attilio, 1979 - syn of: Pteropurpura benderskyi W.K. Emerson & D'Attilio, 1979 - (MURICIDAE)
- dearmata fairiana, Pteropurpura dearmata fairiana (R. Houart, 1979) - syn of: Pteropurpura fairiana (R. Houart, 1979) - (MURICIDAE)
- deatsvillensis, Idonearca deatsvillensis L.W. Stephenson, 1941 † - (CUCULLAEIDAE) (FOSSIL)
- deaurata, Aeolidia deaurata J.G. Dalyell, 1853 - syn of: Cuthona caerulea (G. Montagu, 1804) - (AEOLIDIIDAE)
- deaurata, Seila deaurata E. Rolán & F. Fernandes, 1990 - (CERITHIOPSIDAE)
- deaurata, Cuthona deaurata J.G. Dalyell, 1853 - syn of: Cuthona caerulea (G. Montagu, 1804) - (FIONIDAE)
- deaurata, Nacella deaurata (J.F. Gmelin, 1791) - (NACELLIDAE)
- deaurata, Patella deaurata J.F. Gmelin, 1791 - syn of: Nacella deaurata (J.F. Gmelin, 1791) - (PATELLIDAE)
- deaurata aurea, Nacella deaurata aurea (J.F. Gmelin, 1791) - (NACELLIDAE)
- deaurata fuegiensis, Nacella deaurata fuegiensis L.A. Reeve, 1855 - (NACELLIDAE)
- deauratum, Mactra deauratum W. Turton, 1822 - syn of: Mesodesma deauratum (Turton, 1822) - (MACTRIDAE)
- deauratum, Mesodesma deauratum (Turton, 1822) - (MESODESMATIDAE)
- debackeriana, Xerosecta debackeriana (P.M. Pallary, 1920) - (HYGROMIIDAE)
- debaoensis, Gonioviriatellina debaoensis Ruan & Mu, 1989 † - (GONIONOWAKIIDAE) (FOSSIL)
- Debeauxhelix, syn of: Genus Urguessella Bacci, 1943 (CANARIELLIDAE)
- debeauxi, Placostylus porphyrostomus debeauxi (J. Gassies, 1871) - (BOTHRIEMBRYONTIDAE)
- debeauxi, Sphincterochila debeauxi (W. Kobelt, 1881) - (SPHINCTEROCHILIDAE)
- debeauxi elevata, Sphincterochila debeauxi elevata P.M. Pallary, 1910 - (SPHINCTEROCHILIDAE)
- debeauxiana, Pirena debeauxiana J.C.H. Crosse, 1862 - syn of: Madagasikara madagascariensis (J.P.S. Grateloup, 1840) - (PACHYCHILIDAE)
- debeauxiana, Plagyrona debeauxiana J.R. Bourguignat, 1863 - syn of: Plagyrona placida (R.J. Shuttleworth, 1852) - (VALLONIIDAE)
- debelius, Rictaxiella debelius G.T. Poppe, S.P. Tagaro & M. Chino, 2011 - (BULLINIDAE)
- debelius, Naviculavolva debelius F.Jr. Lorenz & D. Fehse, 2011 - (OVULIDAE)
- debenhami, Bankia debenhami T. Iredale, 1932 - syn of: Bankia australis (W.T. Calman, 1920) - (TEREDINIDAE)
- debesi, Carswellena debesi K. Kreipl & A. Alf, 2000 - (TURBINIDAE)
- debettae, Chilostoma adelozona debettae G.B. Adami, 1876 - (HELICIDAE)
- debganensis, Lophospira debganensis Horný, 1997 † - syn of: Raphistoma debganensis (Horný, 1997 †) - (LOPHOSPIRIDAE) (FOSSIL)
- debganensis, Raphistoma debganensis (Horný, 1997 †) - (RAPHISTOMATIDAE) (FOSSIL)
- debiae, Semicassis inornata debiae D.R. Goodwin, 2008 - (CASSIDAE)
- debile, Caecum debile A.E. Verrill & K.J. Bush, 1900 - (CAECIDAE)
- debile, Calliostoma debile J.F. Quinn, 1992 - (CALLIOSTOMATIDAE)
- debile, Campylacrum debile Finlay & J. Marwick, 1937 † - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- debile, Crioceras debile Dittmar, 1864 † - syn of: Choristoceras rhaeticum (Gümbel, 1861 †) - (CRIOCERATITIDAE) (FOSSIL)
- debile, Cheloniceras debile T.L. Casey, 1962 † - (DOUVILLEICERATIDAE) (FOSSIL)
- debile, Graphoceras debile Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- debile, Aliculastrum debile (W.H. Pease, 1860) - (HAMINOEIDAE)
- debile, Loxonema debile J. Perner, 1903 † - (LOXONEMATIDAE) (FOSSIL)
- debile, Sinum debile (Gould, 1853) - (NATICIDAE)
- debile, Phylloceras debile J. Von Hauer, 1846 † - syn of: Rhacophyllites debilis (J. Von Hauer, 1846 †) - (PHYLLOCERATIDAE) (FOSSIL)
- debile, Kenzieana debile Barrande, 1881 † - syn of: Kenzieana bellula (Barrande, 1881 †) - (SPANILIDAE) (FOSSIL)
- debile, Tainoceras debile Reed, 1944 † - (TAINOCERATIDAE) (FOSSIL)
- debiliformis, Pyrgulina debiliformis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- debilis, Erraticornus debilis A.V. Sysoev, 1973 † - (ALTAICORNIDAE) (FOSSIL)
- debilis, Amastra metamorpha debilis H.A. Pilsbry & C.M. Cooke, 1914 - (AMASTRIDAE)
- debilis, Arca debilis K. Martin, 1883 † - (ARCIDAE) (FOSSIL)
- debilis, Paludinassiminea debilis A.A. Gould, 1859 - (ASSIMINEIDAE)
- debilis, Aphanitoma debilis (A.H.E. Beyrich, 1850 ) - (BORSONIIDAE)
- debilis, Drymaeus debilis (H.H. Beck, 1837) - (BULIMULIDAE)
- debilis, Bulla debilis A.A. Gould, 1840 - syn of: Diaphana minuta T. Brown, 1827 - (BULLIDAE)
- debilis, Crystallopsis debilis W.F. Clapp, 1923 - (CAMAENIDAE)
- debilis, Clausilia debilis P. Fagot, 1905 - syn of: Clausilia bidentata abietina (D. Dupuy, 1850) - (CLAUSILIIDAE)
- debilis, Clavatula debilis (R.B. Hinds, 1843) - (CLAVATULIDAE)
- debilis, Zafra debilis C. Hedley, 1915 - (COLUMBELLIDAE)
- debilis, Conus debilis A. Feneaux, 1943 - syn of: Darioconus auricomus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- debilis, Cyrena debilis A.A. Gould - syn of: Corbiculina australis (G.P. Deshayes, 1830) - (CYRENIDAE)
- debilis, Gibberula debilis (W.H. Pease, 1871) - (CYSTISCIDAE)
- debilis, Deshayesites normani debilis T.L. Casey, 1964 † - (DESHAYESITIDAE) (FOSSIL)
- debilis, Diaphana debilis A.A. Gould, 1840 - syn of: Diaphana minuta T. Brown, 1827 - (DIAPHANIDAE)
- debilis, Diplommatina debilis A.R.J.B. Bavay & P. Dautzenberg, 1903 - (DIPLOMMATINIDAE)
- debilis, Rhacophyllites debilis (J. Von Hauer, 1846 †) - (DISCOPHYLLITIDAE) (FOSSIL)
- debilis, Doris debilis W.H. Pease, 1871 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DORIDIDAE)
- debilis, Splendrillia debilis H.J. Finlay, 1927 † - (DRILLIIDAE) (FOSSIL)
- debilis, Melanella debilis (C.B. Adams, 1861) - (EULIMIDAE)
- debilis, Hanleya debilis J.E. Gray, 1857 - syn of: Hanleya hanleyi (W.I. Bean, 1844) - (HANLEYIDAE)
- debilis, Lauria debilis A. Mousson, 1872 - syn of: Lauria fanalensis R.T. Lowe, 1852 - (LAURIIDAE)
- debilis, Nodilittorina debilis R.A. Philippi, 1846 - syn of: Echinolittorina ziczac (J.F. Gmelin, 1791) - (LITTORINIDAE)
- debilis, Lenotropites debilis Wang & C. Chen, 1979 † - (LONGOBARDITIDAE) (FOSSIL)
- debilis, Meropesta debilis A.A. Gould, 1850 - syn of: Standella pellucida (J.F. Gmelin, 1791) - (MACTRIDAE)
- debilis, Eucithara debilis (W.H. Pease, 1868) - (MANGELIIDAE)
- debilis, Melanopsis debilis P.M. Pallary, 1920 - (MELANOPSIDAE)
- debilis, Ebala debilis T.A. de M. Monterosato, 1875 - (MURCHISONELLIDAE)
- debilis, Sigaretus debilis Gould, 1853 - syn of: Sinum debile (Gould, 1853) - (NATICIDAE)
- debilis, Mienerita debilis (H. Dufo, 1840) - (NERITIDAE)
- debilis, Gurleyites debilis Wang & He, 1976 † - (PRIONITIDAE) (FOSSIL)
- debilis, Psammobia debilis G.P. Deshayes, 1857 † - (PSAMMOBIIDAE) (FOSSIL)
- debilis, Turbonilla debilis A. Adams, 1860 - (PYRAMIDELLIDAE)
- debilis, Eulimella debilis T.A. de M. Monterosato, 1875 - syn of: Ebala striatula (J.G. Jeffreys, 1856) - (PYRAMIDELLIDAE)
- debilis, Glyphostomoides debilis R.B. Hinds, 1843 - syn of: Clavatula debilis (R.B. Hinds, 1843) - (RAPHITOMIDAE)
- debilis, Rhopalomenia debilis H.F. Nierstrasz, 1902 - syn of: Strophomenia debilis (H.F. Nierstrasz, 1902) - (RHOPALOMENIIDAE)
- debilis, Rissoina debilis A. Garrett, 1873 - (RISSOINIDAE)
- debilis, Lycettitrigonia debilis (J. Lycett, 1877 †) - (RUTITRIGONIIDAE) (FOSSIL)
- debilis, Euclastaria debilis (L. Pfeiffer, 1839) - (SAGDIDAE)
- debilis, Solecurtus debilis A.A. Gould, 1861 - (SOLECURTIDAE)
- debilis, Euglandina debilis (P.M.A. Morelet, 1852) - (SPIRAXIDAE)
- debilis, Strophocheilus debilis J.C. Bequaert, 1948 - (STROPHOCHEILIDAE)
- debilis, Strophomenia debilis (H.F. Nierstrasz, 1902) - (STROPHOMENIIDAE)
- debilis, Nothapalus caelatus debilis H.A. Pilsbry, 1919 - (SUBULINIDAE)
- debilis, Oxyloma debilis L. Pfeiffer, 1859 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- debilis, Thyasira debilis (K.H.J. Thiele, 1912) - (THYASIRIDAE)
- debilis, Genaxinus debilis K.H.J. Thiele, 1912 - syn of: Thyasira debilis (K.H.J. Thiele, 1912) - (THYASIRIDAE)
- debilis, Trigonia debilis J. Lycett, 1877 † - syn of: Lycettitrigonia debilis (J. Lycett, 1877 †) - (TRIGONIIDAE) (FOSSIL)
- debilis, Clanculus jussieui debilis B.C.M. Payraudeau, 1826 - (TROCHIDAE)
- debilis, Truncatella debilis A. Mousson, 1874 - syn of: Truncatella subcylindrica (C. Linnaeus, 1767) - (TRUNCATELLIDAE)
- debilis, Liocallonia infortunata debilis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- debilis, Valvata debilis A. Fuchs, 1870 † - (VALVATIDAE) (FOSSIL)
- debilisculptus, Scutalus coraeformis debilisculptus W.K. Weyrauch, 1967 - (BULIMULIDAE)
- debilisculptus, Thaumastus occidentalis debilisculptus W.K. Weyrauch, 1960 - (MEGASPIRIDAE)
- debitusae, Mitrella debitusae K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- debitusae, Dentalium debitusae V. Scarabino, 2008 - (DENTALIIDAE)
- deblainvillei, Diacavolinia deblainvillei S. Van Der Spoel, P. Bleeker & H. Kobayasi, 1993 - (CAVOLINIIDAE)
- deboeri, Turbonilla deboeri D. De Jong & H.E. Coomans, 1988 - (PYRAMIDELLIDAE)
- deboeri, Alvania deboeri D. De Jong & H.E. Coomans, 1988 - (RISSOIDAE)
- debooyi, Mitrella debooyi C.J. Maury, 1917 † - (COLUMBELLIDAE) (FOSSIL)
- deborahae, Elysia deborahae J.A. Ortea, G.M. Caballer, L. Moro & J. Espinosa, 2005 - (PLAKOBRANCHIDAE)
- debouaaensis, Zadelsdorfia debouaaensis Bockwinkel & Ebbighausen, 2006 † - (GATTENDORFIIDAE) (FOSSIL)
- debrae, Pleioptygma debrae E.J. Petuch, 1994 † - (PLEIOPTYGMATIDAE) (FOSSIL)
- debrixiana, Corbicula debrixiana P.M. Heude, 1887 - syn of: Corbicula lamarckiana T. Prime, 1867 - (CYRENIDAE)
- debruini, Chaetopleura debruini (H.L. Strack, 1996) - (CHAETOPLEURIDAE)
- debruini, Cypraeovula coronata debruini F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- debruini, Doriopsilla debruini A. Perrone, 2001 - (DENDRODORIDIDAE)
- debruini, Lepidozona debruini H.L. Strack, 1996 - syn of: Chaetopleura debruini (H.L. Strack, 1996) - (ISCHNOCHITONIDAE)
- debruini, Dentimargo debruini T. Cossignani, 1998 - (MARGINELLIDAE)
- debruini, Pteropurpura debruini (F.Jr. Lorenz, 1989) - (MURICIDAE)
- debruini, Poropteron debruini (F.Jr. Lorenz, 1989) - syn of: Pteropurpura debruini (F.Jr. Lorenz, 1989) - (MURICIDAE)
- debruini, Triviella debruini F.Jr. Lorenz, 1994 - syn of: Triviella goslineri (W. Liltved & V.G. Millard, 1994) - (TRIVIIDAE)
- Debrunia, Genus Debrunia Masse & Fenerci-Masse, 2009 † (MONOPLEURIDAE) (FOSSIL)
- debruynei, Alvania debruynei M.J. Faber & R.G. Moolenbeek, 2004 - (RISSOIDAE)
- debuchi, Pleurotomaria debuchi Deslongchamps, 1849 † - (PLEUROTOMARIIDAE) (FOSSIL)
- deburghaeanus, Cyclotus deburghaeanus E. Chitty, 1857 - syn of: Cycladamsia seminuda (C.B. Adams, 1851) - (CYCLOPHORIDAE)
- deburghi, Persicula deburghi (A. Adams, 1864) - (CYSTISCIDAE)
- deburghiae, Papillifera deburghiae M. Paulucci, 1878 - (CLAUSILIIDAE)
- deburghiae, Papillifera solida deburghiae H. Nordsieck, 2005 - (CLAUSILIIDAE)
- deburghiae, Conus deburghiae G.B. II Sowerby, 1857 - syn of: Conus nocturnus J. Lightfoot, 1786 - (CONIDAE)
- deburghiae, Imbricaria deburghiae G.B. Sowerby, 1879 - syn of: Imbricaria vanikorensis (J.R.C. Quoy & J.P. Gaimard, 1833) - (MITRIDAE)
- deburghiae, Babelomurex deburghiae (L.A. Reeve, 1857) - (MURICIDAE)
- deburghiae, Coralliophila deburghiae W.H. Dall, 1889 - syn of: Babelomurex dalli (W.K. Emerson & D'Attilio, 1963) - (MURICIDAE)
- deburghiae, Sultana deburghiae L.A. Reeve, 1859 - (ORTHALICIDAE)
- deburghiae, Tropidophora deburghiae (L.A. Reeve, 1861) - (POMATIIDAE)
- deburghiae fusiformis, Coralliophila deburghiae fusiformis W.H. Dall, 1889 - syn of: Babelomurex dalli (W.K. Emerson & D'Attilio, 1963) - (MURICIDAE)
- deburghiae spinosa, Coralliophila deburghiae spinosa W.H. Dall, 1889 - syn of: Babelomurex dalli (W.K. Emerson & D'Attilio, 1963) - (MURICIDAE)
- debussa, Rissoina debussa W.P. Woodring, 1928 † - (RISSOINIDAE) (FOSSIL)
- Decadopecten, syn of: Genus Decatopecten G.B. Sowerby, 1839 (PECTINIDAE)
- decagonia, Sassia decagonia (Finlay, 1924 †) - (RANELLIDAE) (FOSSIL)
- decagonum, Diatinostoma decagonum Douville, 1925 † - (EUSTOMATIDAE) (FOSSIL)
- decagyra, Melanella decagyra (J.C. Melvill & R. Standen, 1903) - (EULIMIDAE)
- decagyra, Systrophiella decagyra (R.A. Philippi, 1869) - (SCOLODONTIDAE)
- decampi, Galba decampi L.H. Streng, 1896 - (LYMNAEIDAE)
- decampi, Oxyloma decampi (G.W. Tryon, 1866) - (SUCCINEIDAE)
- decampi, Campeloma decampi W.G. Binney, 1865 - (VIVIPARIDAE)
- decampi gouldi, Oxyloma decampi gouldi H.A. Pilsbry, 1948 - (SUCCINEIDAE)
- decampii, Goniobasis perstriata decampii I. Lea, 1863 - (PLEUROCERIDAE)
- decampoi, Monacha decampoi A. Villa, 1841 - syn of: Eutheba cantiana (G. Montagu, 1803) - (HYGROMIIDAE)
- decamposi, Calliostoma decamposi C.J. Maury, 1924 † - (CALLIOSTOMATIDAE) (FOSSIL)
- decapensis, Brocchinia decapensis (K.H. Barnard, 1960) - (CANCELLARIIDAE)
- decaphylla, Marionia decaphylla F.J. Cantraine, 1835 - syn of: Marionia blainvillea (A. Risso, 1818) - (TRITONIIDAE)
- decapitata, Acteocina decapitata H.H. Suter, 1909 - (ACTEOCINIDAE)
- decapitata, Belomitra decapitata Y.I. Kantor, N. Puillandre, A. Rivasseau & P. Bouchet, 2012 - (BELOMITRIDAE)
- decapitata, Megalophaedusa decapitata (H.A. Pilsbry, 1902) - (CLAUSILIIDAE)
- decapitata, Cylichna decapitata (W.H. Dall, 1896 †) - (CYLICHNIDAE) (FOSSIL)
- decapitata, Bornia decapitata A.W.B. Powell, 1939 - (KELLIIDAE)
- decapitata, Borniola decapitata (A.W.B. Powell, 1939) - (LASAEIDAE)
- decapitata, Benthomangelia decapitata P. Bouchet & A. Warén, 1980 - (MANGELIIDAE)
- decapitata, Philobrya decapitata K.H.J. Thiele & S.G.A. Jaeckel, 1931 - syn of: Adacnarca velaini (E.A. Smith, 1904) - (PHILOBRYIDAE)
- decapitata, Plicisyrinx decapitata A.V. Sysoev & Y.I. Kantor, 1986 - (PSEUDOMELATOMIDAE)
- decapitata, Rissoina decapitata (C.F. Laseron, 1956) - (RISSOINIDAE)
- decapitata cylindrica, Caducifer decapitata cylindrica W.H. Pease, 1868 - syn of: Caducifer decapitatus (L.A. Reeve, 1844) - (BUCCINIDAE)
- decapitatum, Aylacostoma decapitatum (J.B. von Spix, 1827) - (THIARIDAE)
- decapitatus, Caducifer decapitatus (L.A. Reeve, 1844) - (BUCCINIDAE)
- decapitatus, Joculator decapitatus J. Grant-Mackie & M. Chapman-Smith, 1971 † - (CERITHIOPSIDAE) (FOSSIL)
- decapitatus englerti, Caducifer decapitatus englerti (L.G. Hertlein, 1960) - syn of: Caducifer englerti (L.G. Hertlein, 1960) - (BUCCINIDAE)
- decaptyx, Narona decaptyx J. Brown & H.A. Pilsbry, 1911 † - (CANCELLARIIDAE) (FOSSIL)
- decartesana, Amplirhagada decartesana F. Köhler, 2010 - (CAMAENIDAE)
- decaryi, Ampelita decaryi E. Fischer-Piette, 1952 - (ACAVIDAE)
- decaryi, Kalidos decaryi E. Fischer-Piette, F. Blanc & F. Salvat, 1975 - (ARIOPHANTIDAE)
- decaryi, Mitromica decaryi (P. Dautzenberg, 1932) - (COSTELLARIIDAE)
- decaryi, Thala decaryi P. Dautzenberg, 1932 - syn of: Mitromica decaryi (P. Dautzenberg, 1932) - (COSTELLARIIDAE)
- decaryi, Tylotiella decaryi (P. Dautzenberg, 1932) - (DRILLIIDAE)
- decaryi, Hypengonoceras decaryi M. Collignon, 1963 † - (KNEMICERATIDAE) (FOSSIL)
- decaryi, Mangelia decaryi P. Dautzenberg, 1932 - (MANGELIIDAE)
- decaryi, Ovaginella decaryi (A.R.J.B. Bavay, 1920) - (MARGINELLIDAE)
- decaryi, Opeas decaryi E. Fischer-Piette, Ch.P. Blanc & D. Vukadinovic, 1974 - (SUBULINIDAE)
- Decatopecten, Genus Decatopecten G.B. Sowerby, 1839 (PECTINIDAE)
- decattaniae, Delima pachystoma decattaniae (J. Villa, 1871) - (CLAUSILIIDAE)
- deccanense, Cyathopoma deccanense (W.T. Blanford, 1868) - (CYCLOPHORIDAE)
- deccanense, Opisthostoma deccanense (R.H. Beddome, 1875) - (DIPLOMMATINIDAE)
- Deceballia, syn of: Genus Cibania A.J. Wagner, 1914 (OXYCHILIDAE)
- decemcostata, Neptunea decemcostata (T. Say, 1826) - (BUCCINIDAE)
- decemcostata, Neptunea decemcostata T. Say, 1826 - syn of: Neptunea decemcostata (T. Say, 1826) - (BUCCINIDAE)
- decemcostata, Pleuromeris decemcostata T.A. Conrad, 1867 † - (CARDITIDAE) (FOSSIL)
- decemcostata, Syntomodrillia decemcostata (N.H. Ludbrook, 1941 †) - (DRILLIIDAE) (FOSSIL)
- decemcostata, Fissurella decemcostata (J.H. McLean, 1970) - (FISSURELLIDAE)
- decemcostata, Cremides decemcostata J.H. McLean, 1970 - syn of: Fissurella decemcostata (J.H. McLean, 1970) - (FISSURELLIDAE)
- decemcostata, Purpura decemcostata A.T. von Middendorff, 1849 - syn of: Nucella canaliculata (P.L. Duclos, 1832) - (MURICIDAE)
- decemcostata, Patella decemcostata E.A. Smith, 1901 - syn of: Scutellastra longicosta (J.B.P.A. Lamarck, 1819) - (PATELLIDAE)
- decemcostata, Patella decemcostata W.H. Turton, 1932 - syn of: Scutellastra barbara (C. Linnaeus, 1758) - (PATELLIDAE)
- decemcostata clenchi, Neptunea decemcostata clenchi A.H. Clarke, 1956 - syn of: Neptunea despecta (C. Linnaeus, 1758) - (BUCCINIDAE)
- decemcostata turnerae, Neptunea decemcostata turnerae A.H. Clarke, 1956 - syn of: Neptunea decemcostata (T. Say, 1826) - (BUCCINIDAE)
- decemcostatum, Dentalium decemcostatum J.W. Brazier, 1877 - (DENTALIIDAE)
- decemcostatus, Cerithium decemcostatus Smith, 1893 † - syn of: Neocryptaulax decemcostatus (Smith, 1893 †) - (CERITHIIDAE) (FOSSIL)
- decemcostatus, Neocryptaulax decemcostatus (Smith, 1893 †) - (CRYPTAULACIDAE) (FOSSIL)
- decemlirata, Graciliala decemlirata (T.A. Conrad, 1858 †) - (APORRHAIDAE) (FOSSIL)
- decemliratum, Paryphostoma decemliratum (A.E.M. Cossmann, 1888 †) - (DIASTOMATIDAE) (FOSSIL)
- decemnarius, Chlamys decemnarius T.A. Conrad, 1834 † - (PECTINIDAE) (FOSSIL)
- decemplicata, Abida decemplicata É.A.A. Locard, 1881 - syn of: Abida secale (J.P.R. Draparnaud, 1801) - (CHONDRINIDAE)
- decemplicata, Serrulella decemplicata (Sacco, 1886) † - (CLAUSILIIDAE) (FOSSIL)
- decemplicata, Drillia decemplicata E.W. Vredenburg, 1921 † - (DRILLIIDAE) (FOSSIL)
- decemradiata, Ostrea decemradiata J.F. Gmelin, 1791 - syn of: Nodipecten nodosus (C. Linnaeus, 1758) - (OSTREIDAE)
- decemradiata, Lyropecten decemradiata J.F. Gmelin, 1791 - syn of: Nodipecten nodosus (C. Linnaeus, 1758) - (PECTINIDAE)
- decemradiatus, Pecten decemradiatus J.F. Gmelin, 1791 - syn of: Nodipecten magnificus (Sowerby, 1835) - (PECTINIDAE)
- decenna, Drillia decenna W.H. Dall, 1908 - syn of: Clavus clavata (G.B. I Sowerby, 1870) - (DRILLIIDAE)
- decens, Zeatoma decens (J. Marwick, 1931 †) - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- decens, Japanochlamys decens (H.A. Pilsbry & Y. Hirase, 1904) - (HELICARIONIDAE)
- decens, Druzeticia decens W. Korn & Sudar, 2016 † - (RHYMMOCERATIDAE) (FOSSIL)
- decepta, Achatinella decepta C.B. Adams - syn of: Amastra variegata (L. Pfeiffer, 1849) - (ACHATINELLIDAE)
- decepta, Margarella decepta N.H. Odhner, 1924 - syn of: Cantharidus antipodum (J.B. Hombron & C.H. Jacquinot, 1854) - (CALLIOSTOMATIDAE)
- decepta, Philonesia decepta H.B. Baker, 1940 - (EUCONULIDAE)
- decepta, Pyrgulopsis decepta H.B. Baker, 1928 - (HYDROBIIDAE)
- decepta, Phosinella decepta (C.F. Laseron, 1956) - (RISSOINIDAE)
- deceptans, Alopia glorifica deceptans T. Deli & M. Szekeres, 2011 - (CLAUSILIIDAE)
- deceptionensis, Limatula deceptionensis H.B. Preston, 1916 - (LIMIDAE)
- deceptor, Leptachatina deceptor T.D.A. Cockerell, 1927 - (AMASTRIDAE)
- deceptor, Bistolida brevidentata deceptor (T. Iredale, 1935) - (CYPRAEIDAE)
- deceptor, Orthalicus princeps deceptor H.A. Pilsbry, 1899 - (ORTHALICIDAE)
- deceptor, Turrithyra deceptor (R. Arango, 1882) - (POMATIIDAE)
- deceptor persimilis, Turrithyra deceptor persimilis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- deceptor scalaris, Turrithyra deceptor scalaris (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- deceptor vicentensis, Turrithyra deceptor vicentensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- Deceptrena, syn of: Genus Pseudocharopa A.J. Peile, 1929 (CHAROPIDAE)
- deceptriformis, Nuculoidea deceptriformis Bailey † - (NUCULIDAE) (FOSSIL)
- Deceptrix, Genus Deceptrix Fuchs, 1919 † (CARDIOLARIIDAE) (FOSSIL)
- deceptrix, Odostomia deceptrix W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- deceptrix, Turridrupa deceptrix C. Hedley, 1922 - (TURRIDAE)
- deceptrix, Festilyria festiva deceptrix S. Palazzi, 1981 - (VOLUTIDAE)
- deceptum, Stenotrema deceptum W.F. Clapp, 1905 - (POLYGYRIDAE)
- deceptus, Cantharus deceptus J.L.M. Defrance in G.P. Deshayes, 1834 † - (BUCCINIDAE) (FOSSIL)
- deceptus, Laetifautor deceptus (E.A. Smith, 1899) - (CALLIOSTOMATIDAE)
- deceptus, Goniatites deceptus W. Korn & Titus, 2011 † - (GONIATITIDAE) (FOSSIL)
- deceptus, Neoguraleus deceptus A.W.B. Powell, 1942 † - (MANGELIIDAE) (FOSSIL)
- deceptus, Antiguraleus deceptus A.W.B. Powell, 1942 † - (MANGELIIDAE) (FOSSIL)
- decessor, Phenatoma decessor J. Marwick, 1928 † - (BORSONIIDAE) (FOSSIL)
- decessor, Searlesia decessor M. Yokoyama, 1928 † - (BUCCINIDAE) (FOSSIL)
- decewi, Pleuronotus decewi (Billings, 1861 †) - (EUOMPHALIDAE) (FOSSIL)
- Dechaseauxia, Genus Dechaseauxia Tavani, 1949 † (HIPPURITIDA (UNASSIGNED)) (FOSSIL)
- decheni, Tragoceras decheni (Remele, 1886 †) - (ESTONIOCERATIDAE) (FOSSIL)
- decheni, Falcilituites decheni Remele, 1886 † - syn of: Tragoceras decheni (Remele, 1886 †) - (ESTONIOCERATIDAE) (FOSSIL)
- decheni, Goniatites decheni Koch, 1872 † - syn of: Pinacites jugleri (F.A. Roemer, 1843 †) - (GONIATITIDAE) (FOSSIL)
- decheni, Pecten decheni F.A. Roemer, 1939 † - syn of: Camptonectes auritus (Schlotheim, 1813 †) - (PECTINIDAE) (FOSSIL)
- decheni, Simbirskites decheni (A. Römer, 1841 †) - (POLYPTYCHITIDAE) (FOSSIL)
- decheni, Macrochilina decheni Holzapfel, 1882 † - (SOLENISCIDAE) (FOSSIL)
- dechenii, Ammonites dechenii Klipstein, 1843 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- dechordata, Sulcobuccinum dechordata (White, 1887 †) - (PSEUDOLIVIDAE) (FOSSIL)
- decidens, Crittendenia decidens (Bittner, 1899 †) - (CLARAIIDAE) (FOSSIL)
- decidens, Claraia decidens Bittner, 1899 † - syn of: Crittendenia decidens (Bittner, 1899 †) - (PTERINOPECTINIDAE) (FOSSIL)
- decidiosa, Lymnaea decidiosa A.A. Gould - syn of: Fossaria obrussa (T. Say, 1825) - (LYMNAEIDAE)
- decidua, Therasia decidua (L. Pfeiffer, 1857) - (CHAROPIDAE)
- decidua, Laeviglandina decidua (L. Pfeiffer, 1861) - (SPIRAXIDAE)
- deciduus, Streptotrochus deciduus (Williams & M. Breger, 1916 †) - (ELASMONEMATIDAE) (FOSSIL)
- deciduus, Pseudotectus deciduus Williams & M. Breger, 1916 † - syn of: Streptotrochus deciduus (Williams & M. Breger, 1916 †) - (PSEUDOPHORIDAE) (FOSSIL)
- deciense, Paragastrioceras deciense Plummer & P.H. Scott, 1937 † - syn of: Glaphyrites deciensis (Plummer & P.H. Scott, 1937 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- deciensis, Glaphyrites deciensis (Plummer & P.H. Scott, 1937 †) - (GLAPHYRITIDAE) (FOSSIL)
- deciensis, Eoasianites deciensis Plummer & P.H. Scott, 1937 † - syn of: Glaphyrites deciensis (Plummer & P.H. Scott, 1937 †) - (NEOICOCERATIDAE) (FOSSIL)
- decimdentata, Anachis decimdentata (H.A. Pilsbry & H.N. Lowe, 1932) - (COLUMBELLIDAE)
- decimvolvis, Parabalea decimvolvis W.K. Weyrauch, 1957 - (CLAUSILIIDAE)
- decimvolvis crassicostata, Parabalea decimvolvis crassicostata W.K. Weyrauch, 1958 - (CLAUSILIIDAE)
- decimvolvis mantaroensis, Parabalea decimvolvis mantaroensis W.K. Weyrauch, 1967 - (CLAUSILIIDAE)
- decimvolvis minor, Parabalea decimvolvis minor W.K. Weyrauch, 1963 - (CLAUSILIIDAE)
- decipens, Cymbularia decipens (Reed, 1921 †) - (BELLEROPHONTIDAE) (FOSSIL)
- decipens, Phragmostoma decipens Reed, 1921 † - syn of: Cymbularia decipens (Reed, 1921 †) - (BELLEROPHONTIDAE) (FOSSIL)
- decipens, Liospira decipens Ulrich & Scofield, 1897 † - (EOTOMARIIDAE) (FOSSIL)
- Decipia, Genus Decipia Arkell, 1937 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- decipiens, Achatinella decipiens W. Newcomb, 1854 - (ACHATINELLIDAE)
- decipiens, Amalda decipiens (G.B. III Sowerby, 1897) - (ANCILLARIIDAE)
- decipiens, Pododesmus decipiens R.A. Philippi, 1837 - syn of: Pododesmus rudis (W.J. Broderip, 1834) - (ANOMIIDAE)
- decipiens, Arcestes decipiens Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- decipiens, Agassiceras decipiens (Spath, 1923 †) - (ARIETITIDAE) (FOSSIL)
- decipiens, Bithynia decipiens P.A. Millet, 1843 - syn of: Bithynia tentaculata (C. Linnaeus, 1758) - (BITHYNIIDAE)
- decipiens, Bulimulus decipiens J.G. Cooper, 1895 - syn of: Rabdotus pilula W.G. Binney, 1861 - (BULIMULIDAE)
- decipiens, Calliostoma decipiens R.J.L. Guppy, 1867 - (CALLIOSTOMATIDAE)
- decipiens, Calliostoma decipiens A.A. Olsson, 1971 - syn of: Calliostoma decipiens R.J.L. Guppy, 1867 - (CALLIOSTOMATIDAE)
- decipiens, Trochita decipiens R.A. Philippi, 1845 - syn of: Trochita pileolus d'Orbigny, 1841 - (CALYPTRAEIDAE)
- decipiens, Calyptraea decipiens R.A. Philippi, 1845 - syn of: Trochita pileolus d'Orbigny, 1841 - (CALYPTRAEIDAE)
- decipiens, Semicassis decipiens (R.N. Kilburn, 1980) - (CASSIDAE)
- decipiens, Casmaria decipiens R.N. Kilburn, 1980 - syn of: Semicassis decipiens (R.N. Kilburn, 1980) - (CASSIDAE)
- decipiens, Phalium decipiens R.N. Kilburn, 1980 - syn of: Semicassis decipiens (R.N. Kilburn, 1980) - (CASSIDAE)
- decipiens, Onithochiton decipiens A. de Rochebrune, 1882 - syn of: Onithochiton neglectus A. de Rochebrune, 1881 - (CHITONIDAE)
- decipiens, Chiton decipiens N. Tiberi, 1877 - syn of: Lepidochitona caprearum corrugata (L.A. Reeve, 1848) - (CHITONIDAE)
- decipiens, Delima decipiens E.A. Rossmässler, 1835 - syn of: Delima latilabris (J.A. Wagner, 1829) - (CLAUSILIIDAE)
- decipiens, Cochlostoma decipiens F.E. De Betta, 1870 - syn of: Cochlostoma philippianum P.V. Gredler, 1853 - (COCHLOSTOMATIDAE)
- decipiens, Anachis decipiens C.B. Adams, 1850 - syn of: Parvanachis obesa (C.B. Adams, 1845) - (COLUMBELLIDAE)
- decipiens, Vexillum decipiens P. Dautzenberg & J.L. Bouge, 1923 - syn of: Pusia hervieri (P. Dautzenberg & J.L. Bouge, 1923) - (COSTELLARIIDAE)
- decipiens, Eucrassatella decipiens (L.A. Reeve, 1842) - (CRASSATELLIDAE)
- decipiens, Leptopoma decipiens L. Pfeiffer, 1861 - (CYCLOPHORIDAE)
- decipiens, Zoila decipiens (E.A. Smith, 1880) - (CYPRAEIDAE)
- decipiens, Vanuxemia decipiens Ulrich, 1894 † - (CYRTODONTIDAE) (FOSSIL)
- decipiens, Oiophyllites decipiens Spath, 1953 † - (DESMOCERATIDAE) (FOSSIL)
- decipiens, Pavlovia decipiens (Neaverson, 1924) † - (DORSOPLANITIDAE) (FOSSIL)
- decipiens, Liospira decipiens Ulrich & Scofield, 1897 † - syn of: Liospira decipens Ulrich & Scofield, 1897 † - (EOTOMARIIDAE) (FOSSIL)
- decipiens, Melanella decipiens (C. Hedley, 1899) - (EULIMIDAE)
- decipiens, Pleia decipiens (R. Tate, 1888 †) - (FASCIOLARIIDAE) (FOSSIL)
- decipiens, Fusinus decipiens C.W.S. Aurivillius, 1885 - syn of: Habevolutopsius attenuatus (W.H. Dall, 1874) - (FASCIOLARIIDAE)
- decipiens, Fasciolaria decipiens R. Tate, 1888 † - syn of: Pleia decipiens (R. Tate, 1888 †) - (FASCIOLARIIDAE) (FOSSIL)
- decipiens, Turritelloidea decipiens (Hebert & Eudes-Deslongchamps, 1860 †) - (GORDENELLIDAE) (FOSSIL)
- decipiens, Brasilia decipiens (Buckman) † - (GRAPHOCERATIDAE) (FOSSIL)
- decipiens, Diplodon decipiens A.E. Ortmann, 1921 - syn of: Diplodon rhuacoicus (A.V.M.D. D'Orbigny, 1835) - (HYRIIDAE)
- decipiens, Ischnochiton decipiens H.A. Pilsbry, 1892 - (ISCHNOCHITONIDAE)
- decipiens, Lithoglyphus decipiens Š. Brusina, 1885 † - (LITHOGLYPHIDAE) (FOSSIL)
- decipiens, Somatogyrus decipiens B. Walker, 1909 - (LITHOGLYPHIDAE)
- decipiens, Czekanowskites decipiens (Mojsisovics, 1886 †) - (LONGOBARDITIDAE) (FOSSIL)
- decipiens, Jagonoma decipiens (G.P. Deshayes, 1857 †) - (LUCINIDAE) (FOSSIL)
- decipiens, Mangelia decipiens E.A. Smith, 1888 - (MANGELIIDAE)
- decipiens, Melanopsis decipiens P. Fischer, 1883 † - (MELANOPSIDAE) (FOSSIL)
- decipiens, Coelocaulus decipiens J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- decipiens, Concholepas decipiens J.F. Mabille, 1886 - syn of: Concholepas concholepas (J.G. Bruguière, 1789) - (MURICIDAE)
- decipiens, Natica decipiens E.A. Smith, 1904 - syn of: Natica simplex G.B. III Sowerby, 1897 - (NATICIDAE)
- decipiens, Neilonella decipiens (E.A. Smith, 1885) - (NEILONELLIDAE)
- decipiens, Neophylloceras decipiens (Kossmat, 1895 †) - (NEOPHYLLOCERATIDAE) (FOSSIL)
- decipiens, Nerinella decipiens Stanton, 1947 † - (NERINELLIDAE) (FOSSIL)
- decipiens, Striarca decipiens (G.P. Deshayes, 1858 †) - (NOETIIDAE) (FOSSIL)
- decipiens, Leda decipiens E.A. Smith, 1885 - syn of: Neilonella decipiens (E.A. Smith, 1885) - (NUCULANIDAE)
- decipiens, Ennucula decipiens (R.A. Philippi, 1844) - (NUCULIDAE)
- decipiens, Wordieoceras decipiens (Spath, 1930 †) - (OPHICERATIDAE) (FOSSIL)
- decipiens, Orthoceras decipiens Barrande, 1866 † - (ORTHOCERATIDAE) (FOSSIL)
- decipiens, Orthonota decipiens (McCoy) † - (ORTHONOTIDAE) (FOSSIL)
- decipiens, Orthonota decipiens McCoy † - (ORTHONOTIDAE) (FOSSIL)
- decipiens, Ortizius decipiens (O. Böttger, 1886) - (OXYCHILIDAE)
- decipiens, Goniocyclus decipiens Gordon Jr., 1986 † - (PERICYCLIDAE) (FOSSIL)
- decipiens, Distorsio decipiens L.A. Reeve, 1844 - (PERSONIDAE)
- decipiens, Afrophaxas decipiens (E.A. Smith, 1904) - (PHARIDAE)
- decipiens, Phylloceras decipiens Kossmat, 1895 † - syn of: Neophylloceras decipiens (Kossmat, 1895 †) - (PHYLLOCERATIDAE) (FOSSIL)
- decipiens, Pleurotomaria decipiens McCoy † - (PLEUROTOMARIIDAE) (FOSSIL)
- decipiens, Proptychitoides decipiens Spath, 1930 † - (PROPTYCHITIDAE) (FOSSIL)
- decipiens, Knefastia decipiens (G.P. Deshayes, 1865 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- decipiens, Marshallaria decipiens P.A. Maxwell, 1992 † - (PTYCHATRACTIDAE) (FOSSIL)
- decipiens, Rissoa decipiens G.P. Deshayes, 1861 † - (RISSOIDAE) (FOSSIL)
- decipiens, Porosalvania decipiens S. Gofas, 2007 - (RISSOIDAE)
- decipiens, Rissoina decipiens (C.F. Laseron, 1950) - (RISSOINIDAE)
- decipiens, Rissoina decipiens E.A. Smith, 1890 - syn of: Schwartziella bryerea (G. Montagu, 1803) - (RISSOINIDAE)
- decipiens, Scissurella decipiens O.G. Costa, 1861 - syn of: Scissurella costata d'Orbigny, 1824 - (SCISSURELLIDAE)
- decipiens, Lissotesta decipiens A.W.B. Powell, 1940 - (SEGUENZIOIDEA (UNASSIGNED))
- decipiens, Semisulcospira decipiens (C.A. Westerlund, 1883) - (SEMISULCOSPIRIDAE)
- decipiens, Streptartemon decipiens (J.C.H. Crosse, 1865) - (STREPTAXIDAE)
- decipiens, Riebeckia decipiens (E.A. Smith, 1897) - (SUBULINIDAE)
- decipiens, Solariorbis decipiens A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Anticlimax crassilabris (C.G. Aguayo & P.J. Borro, 1946) - (TORNIDAE)
- decipiens, Jujubinus elenchoides decipiens P. Parenzan, 1970 - (TROCHIDAE)
- decipiens, Wichitoceras decipiens Ulrich & al., 1942 † - (TROCHOLITIDAE) (FOSSIL)
- decipiens, Turritella decipiens T.A. de M. Monterosato, 1878 - (TURRITELLIDAE)
- decipiens, Diplodonta decipiens G.P. Deshayes, 1857 † - (UNGULINIDAE) (FOSSIL)
- decipiens, Gyraxis decipiens C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- decipiens, Torrecoptis decipiens C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- decipiens, Venus decipiens S.C.T. Hanley, 1845 - syn of: Clausinella fasciata (E.M. Da Costa, 1778) - (VENERIDAE)
- decipiens, Paludina decipiens P.A. Millet, 1843 - syn of: Bithynia tentaculata (C. Linnaeus, 1758) - (VIVIPARIDAE)
- decipiens, Odontocymbiola decipiens F. Lahille, 1895 - syn of: Odontocymbiola magellanica subnodosa (W.E. Leach, 1814) - (VOLUTIDAE)
- decipiens, Portlandia decipiens E.A. Smith, 1885 - (YOLDIIDAE)
- decipiens, Cossmannia decipiens (G.P. Deshayes, 1861) - (ZEBINIDAE)
- decipiens, Hyalinia decipiens O. Böttger, 1886 - syn of: Ortizius decipiens (O. Böttger, 1886) - (ZONITIDAE)
- decipiens adsharicus, Ortizius decipiens adsharicus F. Riedel, 1966 - (OXYCHILIDAE)
- decipiens boettgeri, Delima decipiens boettgeri H. Nordsieck, 1969 - syn of: Delima latilabris boettgeri H. Nordsieck, 1969 - (CLAUSILIIDAE)
- decipiens duarensis, Delima decipiens duarensis H. Nordsieck, 1969 - syn of: Delima latilabris duarensis H. Nordsieck, 1969 - (CLAUSILIIDAE)
- decipiens kaliuwaaensis, Achatinella decipiens kaliuwaaensis H.A. Pilsbry & C.M. Cooke, 1913 - (ACHATINELLIDAE)
- decipiens multigranosa, Semisulcospira decipiens multigranosa O. Böttger, 1886 - (SEMISULCOSPIRIDAE)
- decipiens planata, Turritella decipiens planata P.M. Pallary, 1906 - syn of: Turritella decipiens T.A. de M. Monterosato, 1878 - (TURRITELLIDAE)
- decipiens planospira, Achatinella decipiens planospira L. Pfeiffer, 1855 - (ACHATINELLIDAE)
- decipiens reticulata, Semisulcospira decipiens reticulata H. Kajiyama & T. Habe, 1961 - (SEMISULCOSPIRIDAE)
- decipiens stricta, Turritella decipiens stricta P.M. Pallary, 1906 - syn of: Turritella decipiens T.A. de M. Monterosato, 1878 - (TURRITELLIDAE)
- decipiens suprasinum, Zoila decipiens suprasinum F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- decipiens swainsoni, Achatinella decipiens swainsoni L. Pfeiffer, 1855 - (ACHATINELLIDAE)
- decipiformis, Brasilia decipiformis Dietze & al., 2014 † - (GRAPHOCERATIDAE) (FOSSIL)
- Decipifus, Genus Decipifus A.A. Olsson & J.T.L. McGinty, 1958 (COLUMBELLIDAE)
- Decipula, syn of: Genus Montacuta W.H. Turton, 1822 (MONTACUTIDAE)
- decisa, Trigonoarca decisa T.A. Conrad, 1833 † - syn of: Pachecoa decisa (T.A. Conrad, 1833 †) - (CUCULLAEIDAE) (FOSSIL)
- decisa, Diodora decisa G.P. Deshayes, 1861 † - (FISSURELLIDAE) (FOSSIL)
- decisa, Helix decisa Š. Brusina, 1866 - syn of: Liburnica hoffmanni (E.A. Rossmässler, 1836) - (HELICIDAE)
- decisa, Panopea decisa T.A. Conrad, 1853 † - (HIATELLIDAE) (FOSSIL)
- decisa, Spisula decisa † - (MACTRIDAE) (FOSSIL)
- decisa, Pachecoa decisa (T.A. Conrad, 1833 †) - (NOETIIDAE) (FOSSIL)
- decisa, Pachecoa decisa G.F. Harris, 1919 † - (NOETIIDAE) (FOSSIL)
- decisa, Trinacria decisa T.A. Conrad, 1833 † - syn of: Pachecoa decisa (T.A. Conrad, 1833 †) - (NOETIIDAE) (FOSSIL)
- decisa, Truncacila decisa (T.A. Conrad, 1855 †) - (NUCULIDAE) (FOSSIL)
- decisa, Semele decisa T.A. Conrad, 1837 - (SEMELIDAE)
- decisa, Tellina decisa (J. Marwick, 1931 †) - (TELLINIDAE) (FOSSIL)
- decisa ilpinensis, Truncacila decisa ilpinensis Pronina, 1980 † - syn of: Truncacila decisa (T.A. Conrad, 1855 †) - (NUCULIDAE) (FOSSIL)
- decisum, Pleurobema decisum I. Lea, 1831 - (UNIONIDAE)
- decisum, Campeloma decisum (T. Say, 1817) - (VIVIPARIDAE)
- decisus, Amnicola decisus S.S. Haldeman, 1845 - (AMNICOLIDAE)
- deckeina, Yeharella deckeina (Kubota, 1952) † - (STEINMANELLIDAE) (FOSSIL)
- deckeni, Deroceras deckeni (H.R. Simroth, 1904) - (AGRIOLIMACIDAE)
- deckeri, Jedria deckeri Blodgett, 1992 † - (NATICOPSIDAE) (FOSSIL)
- deckeri, Westonoceras deckeri Foerste, 1935 † - (WESTONOCERATIDAE) (FOSSIL)
- Deckeroceras, Genus Deckeroceras Foerste, 1935 † (APSIDOCERATIDAE) (FOSSIL)
- deckerti, Liguus fasciatus deckerti W.J. Clench, 1935 - (ORTHALICIDAE)
- declinans, Dumortieria declinans Buckman † - (HILDOCERATIDAE) (FOSSIL)
- declinans, Enixotrophon declinans (R.B. Watson, 1882) - (MURICIDAE)
- declinans, Scissurella declinans Watson, 1886 - syn of: Scissurella mirifica (A. Adams, 1862) - (SCISSURELLIDAE)
- declinata, Hydrobia declinata G.R. von Frauenfeld, 1863 - (HYDROBIIDAE)
- declinata, Systrophia stenostrepta declinata (H.A. Pilsbry, 1900) - (SCOLODONTIDAE)
- decliva, Modiolus decliva White, 1887 † - (MYTILIDAE) (FOSSIL)
- decliva, Pleurofusia decliva T.A. Conrad, † - (TURRIDAE) (FOSSIL)
- decliva asper, Pleurofusia decliva asper McNeil, 1984 † - (TURRIDAE) (FOSSIL)
- declivata, Chrysallida declivata (C.F. Laseron, 1959) - (PYRAMIDELLIDAE)
- declive, Buccinum declive Wood, 1879 † - (BUCCINIDAE) (FOSSIL)
- declive, Oenopota declive S.L. Lovén, 1846 - syn of: Oenopota declivis (S.L. Lovén, 1846) - (MANGELIIDAE)
- declive, Sinum declive T.A. Conrad, 1833 † - (NATICIDAE) (FOSSIL)
- declive, Musculium declive V. Sterki, 1912 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- Decliveites, Genus Decliveites Aguirre & Rawson, 2010 † (NEOCOMITIDAE) (FOSSIL)
- declivis, Arca declivis L.W. Dillwyn, 1817 - syn of: Lunarca ovalis (J.G. Bruguière, 1789) - (ARCIDAE)
- declivis, Anadara declivis L.W. Dillwyn, 1817 - syn of: Lunarca ovalis (J.G. Bruguière, 1789) - (ARCIDAE)
- declivis, Macrochlamys declivis O.F. von Möllendorff, 1901 - (ARIOPHANTIDAE)
- declivis, Suavodrillia declivis (E.C. Von Martens, 1880 †) - (BORSONIIDAE) (FOSSIL)
- declivis, Plicibuccinum declivis (T. Habe & K. Itô, 1976) - (BUCCINIDAE)
- declivis, Crassatella declivis A. Heilprin, 1880 † - syn of: Bathytormus alaeformis (T.A. Conrad, 1830 †) - (CRASSATELLIDAE) (FOSSIL)
- declivis, Trigonoarca declivis T.A. Conrad, 1833 † - syn of: Halonanus declivis (T.A. Conrad, 1833 †) - (CUCULLAEIDAE) (FOSSIL)
- declivis, Notocypraea declivis (G.B. III Sowerby, 1870) - (CYPRAEIDAE)
- declivis, Naticopsis declivis (F. McCoy, 1844 †) - (DELPHINULOPSIDAE) (FOSSIL)
- declivis, Scintilla declivis G.B. II Sowerby, 1862 - syn of: Scintilla solidula G.P. Deshayes, 1856 - (GALEOMMATIDAE)
- declivis, Helicina declivis J. Gundlach in L. Pfeiffer, 1860 - (HELICINIDAE)
- declivis, Helicotoma declivis Safford, 1869 † - (HELICOTOMIDAE) (FOSSIL)
- declivis, Hunanopecten declivis Zhang, 1981 † - (HUNANOPECTINIDAE) (FOSSIL)
- declivis, Eccyliopterus declivis Remelé, 1888 † - (LESUEURILLIDAE) (FOSSIL)
- declivis, Donaldiella declivis J. Perner, 1903 † - syn of: Morania declivis (J. Perner, 1903 †) - (LOPHOSPIRIDAE) (FOSSIL)
- declivis, Darina declivis P.P. Carpenter, 1864 - syn of: Darina solenoides (P.P. King & W.J. Broderip, 1832) - (MACTRIDAE)
- declivis, Oenopota declivis (S.L. Lovén, 1846) - (MANGELIIDAE)
- declivis, Oenopota declivis J.H. Macpherson, 1971 - syn of: Oenopota cancellata (J.W. Mighels & C.B. Adams, 1842) - (MANGELIIDAE)
- declivis, Kingites declivis (L. Waagen, 1895 †) - (MELAGATHICERATIDAE) (FOSSIL)
- declivis, Mitra glabra declivis (L.A. Reeve, 1844) - (MITRIDAE)
- declivis, Morania declivis (J. Perner, 1903 †) - (MURCHISONIIDAE) (FOSSIL)
- declivis, Mya declivis T. Pennant, 1777 - syn of: Mya arenaria C. Linnaeus, 1758 - (MYIDAE)
- declivis, Dicosmos declivis E.A.L. Kittl, 1894 † - (NATICOPSIDAE) (FOSSIL)
- declivis, Halonanus declivis (T.A. Conrad, 1833 †) - (NOETIIDAE) (FOSSIL)
- declivis, Pachecoa declivis G.F. Harris, 1919 † - (NOETIIDAE) (FOSSIL)
- declivis, Nucula declivis R.B. Hinds, 1843 - (NUCULIDAE)
- declivis, Merocycloceras declivis Ristedt, 1968 † - (ORTHOCERATIDAE) (FOSSIL)
- declivis, Planorbis declivis A. Braun, 1851 † - syn of: Gyraulus applanatus (Thomä, 1845 †) - (PLANORBIDAE) (FOSSIL)
- declivis, Comitas declivis Powell, 1931 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- declivis, Abra declivis (G.B. Sowerby, 1868) - (SEMELIDAE)
- declivis, Moerella declivis (T.A. Conrad, 1834 †) - (TELLINIDAE) (FOSSIL)
- declivis, Tellina declivis G.B. II Sowerby, 1868 - syn of: Abra scotti M. Huber, 2010 - (TELLINIDAE)
- declivis, Thracia declivis J.P.Y. Couthouy, 1839 † - (THRACIIDAE) (FOSSIL)
- declivis, Thracia declivis T.A. Conrad, 1832 - syn of: Thracia conradi J.P.Y. Couthouy, 1839 - (THRACIIDAE)
- declivis, Tornus declivis (K.H.J. Thiele, 1925) - (TORNIDAE)
- declivis, Hyrcanolestes declivis H.R. Simroth, 1912 - syn of: Hyrcanolestes velitaris (E.C. Von Martens, 1880) - (TRIGONOCHLAMYDIDAE)
- declivis, Trivirostra declivis D. Fehse, 2015 - (TRIVIIDAE)
- declivis, Rubritrochus declivis (P. Forsskål in C. Niebuhr, 1775) - (TROCHIDAE)
- declivis, Turbo declivis P. Forsskål, 1775 - syn of: Rubritrochus declivis (P. Forsskål in C. Niebuhr, 1775) - (TURBINIDAE)
- declivis, Pleurotoma declivis E.C. Von Martens, 1880 † - syn of: Suavodrillia declivis (E.C. Von Martens, 1880 †) - (TURRIDAE) (FOSSIL)
- declivis, Turritella declivis A. Adams & L.A. Reeve, 1849 - (TURRITELLIDAE)
- declivis, Haustator declivis A. Adams & L.A. Reeve, 1850 - syn of: Turritella declivis A. Adams & L.A. Reeve, 1849 - (TURRITELLIDAE)
- declivis, Uniomerus declivis (T. Say, 1831) - (UNIONIDAE)
- declivis, Anodonta declivis T.A. Conrad, 1834 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- declivis, Vallonia declivis V. Sterki, 1892 - (VALLONIIDAE)
- declivis, Paphia declivis (G.B. II Sowerby, 1852) - (VENERIDAE)
- declivis, Venus declivis G.B. II Sowerby, 1853 - (VENERIDAE)
- declivis, Venus declivis P.H. Boshoff, 1965 - syn of: Venus thomassini E. Fischer-Piette & D. Vukadinovic, 1977 - (VENERIDAE)
- declivis, Tapes declivis G.B. II Sowerby, 1852 - syn of: Paphia declivis (G.B. II Sowerby, 1852) - (VENERIDAE)
- declivis angustior, Oenopota declivis angustior (J.G. Jeffreys, 1877) - (MANGELIIDAE)
- declivis balizacensis, Gyraulus declivis balizacensis M.A. Peyrot, 1932 † - syn of: Anisus balizacensis (M.A. Peyrot, 1932 †) - (PLANORBIDAE) (FOSSIL)
- declivis dennyorum, Notocypraea declivis dennyorum F.Jr. Lorenz & H. Morrison, 2013 - (CYPRAEIDAE)
- declivisdiot, Murchisonia declivisdiot J. Perner, 1903 † - (MURCHISONIIDAE) (FOSSIL)
- declivita, Murchisonella declivita (C.F. Laseron, 1951) - (MURCHISONELLIDAE)
- declivita, Laseronella declivita (C.F. Laseron, 1951) - syn of: Murchisonella declivita (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- declivus, Planorbis declivus R. Tate, 1870 - syn of: Biomphalaria helophila (A.V.M.D. D'Orbigny, 1835) - (PLANORBIDAE)
- decocta, Ampullaria decocta J.F. Mabille, 1887 - (AMPULLARIIDAE)
- Decolihastula, syn of: Genus Terebra J.G. Bruguière, 1789 (TEREBRIDAE)
- decollata, Pisania decollata (G.B. I Sowerby, 1833) - (BUCCINIDAE)
- decollata, Cerithium decollata C. Hedley, 1899 - syn of: Cerithium nodulosum J.G. Bruguière, 1792 - (CERITHIIDAE)
- decollata, Oospira decollata (I.M. Likharev, 1962) - (CLAUSILIIDAE)
- decollata, Neniauchenia dautzenbergi decollata H. Nordsieck, 2002 - (CLAUSILIIDAE)
- decollata, Mitrella decollata Š. Brusina, 1865 - syn of: Mitrella gervillii (B.C.M. Payraudeau, 1826) - (COLUMBELLIDAE)
- decollata, Helix decollata C. Linnaeus, 1758 - syn of: Rumina decollata (C. Linnaeus, 1758) - (HELICIDAE)
- decollata, Janthina decollata P.P. Carpenter, 1857 - syn of: Janthina globosa W.J. Swainson, 1822 - (JANTHINIDAE)
- decollata, Littorina decollata C.F.F. von Krauss in R.A. Philippi, 1847 - syn of: Afrolittorina africana (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- decollata, Lymnaea decollata H.A. Pilsbry - (LYMNAEIDAE)
- decollata, Melanopsis decollata F. Stoliczka, 1862 † - (MELANOPSIDAE) (FOSSIL)
- decollata, Fissilabia decollata (J.R.C. Quoy & J.P. Gaimard, 1833) - (PLANAXIDAE)
- decollata, Planaxis decollata J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Fissilabia decollata (J.R.C. Quoy & J.P. Gaimard, 1833) - (PLANAXIDAE)
- decollata, Cerithidea decollata (C. Linnaeus, 1767) - (POTAMIDIDAE)
- decollata, Rumina decollata (C. Linnaeus, 1758) - (SUBULINIDAE)
- decollata, Cheirodonta decollata E. Rolán & R. Fernández-Garcés, 1994 - (TRIPHORIDAE)
- decollata, Valvata decollata Hislop, 1859 † - (VALVATIDAE) (FOSSIL)
- decollata caralitana, Mitrella decollata caralitana Schiro, 1978 - syn of: Mitrella gervillii (B.C.M. Payraudeau, 1826) - (COLUMBELLIDAE)
- decollata maxima, Rumina decollata maxima (O. Böttger, 1878) - (SUBULINIDAE)
- decollata saharica, Rumina decollata saharica (E.O. Debeaux, 1901) - (SUBULINIDAE)
- decollata tessellata, Melanopsis decollata tessellata Š. Brusina, 1902 † - (MELANOPSIDAE) (FOSSIL)
- Decollatiana, syn of: Genus Rumina A. Risso, 1826 (SUBULINIDAE)
- decollatum, Buccinum decollatum R.A. Philippi, 1844 † - syn of: Tritia corniculum (A.G. Olivi, 1792 †) - (BUCCINIDAE) (FOSSIL)
- decollatum, Eucalodium decollatum (P. Nyst, 1841) - (UROCOPTIDAE)
- decollatum gheisbreghti, Eucalodium decollatum gheisbreghti L. Pfeiffer - syn of: Eucalodium decollatum (P. Nyst, 1841) - (UROCOPTIDAE)
- decollatum guatemalensis, Eucalodium decollatum guatemalensis P. Bartsch, 1906 - (UROCOPTIDAE)
- decollatus, Lithoconus decollatus Martin, 1884 † - (CONIDAE) (FOSSIL)
- decollatus, Planaxis decollatus J.R.C. Quoy, 1834 † - (PLANAXIDAE) (FOSSIL)
- Decollidrillia, Genus Decollidrillia T. Habe & K. Itô, 1965 (TURRIDAE)
- Decolliphaedusa, syn of: Genus Tyrannophaedusa H.A. Pilsbry, 1901 (CLAUSILIIDAE)
- decolor, Achatinella mustelina decolor D.A. Welch, 1938 - (ACHATINELLIDAE)
- decolor, Amphidromus sinistralis decolor C.M. Tapparone-Canefri, 1884 - (CAMAENIDAE)
- decolor, Metanachis decolor A.A. Gould, 1860 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- decolor, Columbella decolor A.A. Gould, 1860 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- decolor, Fusus decolor R.A. Philippi, 1845 - syn of: Xymenopsis muriciformis (P.P. King, 1832) - (FASCIOLARIIDAE)
- decolor, Xymenopsis decolor R.A. Philippi, 1845 - syn of: Xymenopsis muriciformis decolor (R.A. Philippi, 1845) - (MURICIDAE)
- decolor, Xymenopsis muriciformis decolor (R.A. Philippi, 1845) - (MURICIDAE)
- decolor, Orthalicus decolor H. Strebel, 1882 - (ORTHALICIDAE)
- decolor, Hendersonina discolorans decolor C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- decolorata, Belomitra decolorata É.A.A. Locard, 1897 - (BELOMITRIDAE)
- decolorata, Loosjesiella decolorata T.V. Wollaston, 1878 - syn of: Loosjesiella crispa (R.T. Lowe, 1831) - (CLAUSILIIDAE)
- decolorata, Ransoniella decolorata J.E. Gray, 1824 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- decolorata, Katostoma decolorata R.T. Lowe, 1855 - syn of: Leptaxis nivosa (G.B. I Sowerby, 1824) - (HYGROMIIDAE)
- decolorata, Gundlachtudora decolorata (J. Gundlach in L. Pfeiffer, 1859) - (POMATIIDAE)
- decolorata, Colsyrnola decolorata T. Iredale, 1936 - (PYRAMIDELLIDAE)
- decolorata, Happiella decolorata (H. Drouët, 1859) - (SCOLODONTIDAE)
- decolorata, Pseudostomatella decolorata (Gould, 1848) - (TROCHIDAE)
- decoloratum, Pleurotoma decoloratum É.A.A. Locard, 1897 - syn of: Phymorhynchus sulciferus (K.J. Bush, 1893) - (TURRIDAE)
- decoloratus, Drymaeus decoloratus (G.B. I Sowerby, 1833) - (BULIMULIDAE)
- decoloratus, Tomelasmus decoloratus (J. Gundlach in L. Pfeiffer, 1863) - (UROCOPTIDAE)
- decoloratus validus, Tomelasmus decoloratus validus C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- decolorum, Homalopoma decolorum R. Tiba, 1983 - (COLLONIIDAE)
- decolrobertoi, Africonus decolrobertoi (T. Cossignani & R. Fiadeiro, 2017) - (CONIDAE)
- Decomphala, Subgenus Vitrinella (Decomphala) P. Bartsch, 1907 (TORNIDAE)
- deconincki, Anisotoxon deconincki J.L. Van Goethem, 1975 - (UROCYCLIDAE)
- decora, Achatinella decora (A.E.J. Férussac, 1821) - (ACHATINELLIDAE)
- decora, Pirsila decora L.W. Stephenson, 1953 † - (ACTEONIDAE) (FOSSIL)
- decora, Clinopegma decora (W.H. Dall, 1925) - (BUCCINIDAE)
- decora, Ancistrolepis decora W.H. Dall, 1925 - syn of: Clinopegma decora (W.H. Dall, 1925) - (BUCCINIDAE)
- decora, Amplirhagada decora F. Köhler, 2010 - (CAMAENIDAE)
- decora, Cerithiopsis decora W.H. Dall, 1927 - (CERITHIOPSIDAE)
- decora, Euchelus decora G.T. Poppe & S.P. Tagaro, 2016 - (CHILODONTIDAE)
- decora, Enetoplax decora Cherns, 1998 † - (ECHINOCHITONIDAE) (FOSSIL)
- decora, Dictyotomaria decora Hoare & al., 1997 † - (GOSSELETINIDAE) (FOSSIL)
- decora, Helix decora A.E.J. Férussac, 1821 - syn of: Achatinella decora (A.E.J. Férussac, 1821) - (HELICIDAE)
- decora, Georissa decora O.F. von Möllendorff, 1900 - (HYDROCENIDAE)
- decora, Mactra decora L.A. Reeve, 1854 - syn of: Mactra lilacea J.B.P.A. Lamarck, 1818 - (MACTRIDAE)
- decora, Tenaturris decora (E.A. Smith, 1882) - (MANGELIIDAE)
- decora, Cellana radians decora (R.A. Philippi, 1848) - (NACELLIDAE)
- decora, Tanea decora R.A. Philippi, 1853 - syn of: Tanea euzona (C.A. Récluz, 1844) - (NATICIDAE)
- decora, Nuculana decora (C.B. Adams, 1856) - (NUCULANIDAE)
- decora, Cyclonema decora Billings, 1866 † - (PLATYCERATIDAE) (FOSSIL)
- decora, Nuttallia decora R.B. Hinds, 1842 - syn of: Nuttallia nuttallii (T.A. Conrad, 1837) - (PSAMMOBIIDAE)
- decora, Pupilla decora A.A. Gould, 1848 - syn of: Isthmia modesta (T. Say, 1824) - (PUPILLIDAE)
- decora, Tortulosa decora (W.H. Benson, 1853) - (PUPINIDAE)
- decora, Turbonilla decora E.A. Smith, 1904 - (PYRAMIDELLIDAE)
- decora, Sonninia decora Buckman † - (SONNINIIDAE) (FOSSIL)
- decora, Tellina decora T. Say, 1826 - syn of: Tellina similis J. de C. Sowerby, 1806 - (TELLINIDAE)
- decora, Pleurotoma decora E.A. Smith, 1882 - syn of: Tenaturris decora (E.A. Smith, 1882) - (TURRIDAE)
- decora, Anodonta decora I. Lea, 1838 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- decora, Lyria decora A.H.E. Beyrich, 1853 † - (VOLUTIDAE) (FOSSIL)
- decora, Yochelsonia decora J. Perner, 1903 † - syn of: Yochelsonellis decorus (J. Perner, 1903 †) - (YOCHELSONIIDAE) (FOSSIL)
- Decoradrillia, Genus Decoradrillia Fallon, 2016 (DRILLIIDAE)
- decorahense, Kionoceras decorahense Flower, 1952 † - (KIONOCERATIDAE) (FOSSIL)
- decoramen, Colpospira decoramen (T. Iredale, 1936) - (TURRITELLIDAE)
- decorara, Trigonostoma decorara R.B. Newton, 1922 † - (CANCELLARIIDAE) (FOSSIL)
- decorata, Newcombia pfeifferi decorata H.A. Pilsbry & C.M. Cooke, 1912 - (ACHATINELLIDAE)
- decorata, Pseudancylastrum decorata Kókay, 2006 † - (ACROLOXIDAE) (FOSSIL)
- decorata, Acteocina decorata (H.A. Pilsbry, 1904) - (ACTEOCINIDAE)
- decorata, Hallaxa decorata (L.S.R. Bergh, 1877) - (ACTINOCYCLIDAE)
- decorata, Aporrhais decorata É.A.A. Locard, 1889 † - (APORRHAIDAE) (FOSSIL)
- decorata, Yunnania decorata (C. Gemmellaro, 1889 †) - (ARAEONEMATIDAE) (FOSSIL)
- decorata, Acar decorata (I. Hayami & T. Kase, 1993) - (ARCIDAE)
- decorata, Cymbularia decorata Ríha, 1936 † - (BELLEROPHONTIDAE) (FOSSIL)
- decorata, Asthenotoma decorata Harmer, 1915 † - (BORSONIIDAE) (FOSSIL)
- decorata, Bathytoma visagei decorata R. Ardovini, 2015 - (BORSONIIDAE)
- decorata, Euhadra decorata H.A. Pilsbry & Y. Hirase, 1903 - (BRADYBAENIDAE)
- decorata, Cochlostyla ventricosa decorata A.E.J. Férussac, 1848 - (BRADYBAENIDAE)
- decorata, Chauvetia decorata T.A. de M. Monterosato, 1889 - (BUCCINIDAE)
- decorata, Seila decorata A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- decorata, Synthopsis decorata A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- decorata, Glossodoris decorata J.J. Risbec, 1928 - syn of: Hypselodoris maculosa (W.H. Pease, 1871) - (CHROMODORIDIDAE)
- decorata, Clathurella decorata É.A.A. Locard, 1892 - syn of: Raphitoma cordieri (B.C.M. Payraudeau, 1826) - (CLATHURELLIDAE)
- decorata, Clavatula decorata G.B. III Sowerby, 1916 - (CLAVATULIDAE)
- decorata, Makiyamaia decorata A. Oleinik, 1991 † - (CLAVATULIDAE) (FOSSIL)
- decorata, Clymenia decorata G.G. Münster, 1840 † - syn of: Pricella decorata (G.G. Münster, 1840 †) - (CLYMENIIDAE) (FOSSIL)
- decorata, Columbella decorata H. Strebel, 1905 - syn of: Costoanachis sertulariarum (A.V.M.D. D'Orbigny, 1839) - (COLUMBELLIDAE)
- decorata, Tornatina decorata H.A. Pilsbry, 1904 - syn of: Acteocina decorata (H.A. Pilsbry, 1904) - (CYLICHNIDAE)
- decorata, Pricella decorata (G.G. Münster, 1840 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- decorata, Peristernia decorata (A. Adams, 1855) - (FASCIOLARIIDAE)
- decorata, Amiantofusus decorata É.A.A. Locard, 1897 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (FASCIOLARIIDAE)
- decorata, Cranopsis decorata (E. Cowan & J.H. McLean, 1968) - (FISSURELLIDAE)
- decorata, Emarginula decorata G.P. Deshayes, 1863 - syn of: Emarginula spinosa G.P. Deshayes, 1863 - (FISSURELLIDAE)
- decorata, Promathildia decorata (Klipstein, 1843 †) - (GORDENELLIDAE) (FOSSIL)
- decorata, Spiroscala decorata Hoare & al., 1997 † - (GOSSELETINIDAE) (FOSSIL)
- decorata, Lacuna decorata A. Adams, 1861 - (LITTORINIDAE)
- decorata, Lucina decorata Woods, 1850 † - (LUCINIDAE) (FOSSIL)
- decorata, Mathilda decorata (C. Hedley, 1903) - (MATHILDIDAE)
- decorata, Opimilda decorata C. Hedley, 1903 - syn of: Mathilda decorata (C. Hedley, 1903) - (MATHILDIDAE)
- decorata, Melanopsis douttei decorata P.M. Pallary, 1920 - (MELANOPSIDAE)
- decorata, Imbricaria decorata H.M.D. de Blainville, 1825 - syn of: Imbricaria conularis (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- decorata, Cosmogoniophora decorata Reed, 1927 † - (MODIOMORPHIDAE) (FOSSIL)
- decorata, Vilasina decorata (C.B. Adams, 1862) - (MYTILIDAE)
- decorata, Nerita decorata Münster, 1841 † - (NERITIDAE) (FOSSIL)
- decorata, Olivella decorata G. Paulmier, 2015 - (OLIVELLIDAE)
- decorata, Orbitestella decorata C.F. Laseron, 1954 - (ORBITESTELLIDAE)
- decorata, Thuridilla decorata (J. Heller & T.E. Thompson, 1983) - (PLAKOBRANCHIDAE)
- decorata, Pleurotomaria decorata Münster, 1841 † - (PLEUROTOMARIIDAE) (FOSSIL)
- decorata, Pteroperna decorata Reed, 1936 † - (PTERIIDAE) (FOSSIL)
- decorata, Metzgeria decorata É.A.A. Locard, 1897 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (PTYCHATRACTIDAE)
- decorata, Liamorpha decorata (L. de Folin, 1873) - (PYRAMIDELLIDAE)
- decorata, Chrysallida decorata (R.A. Philippi, 1849) - (PYRAMIDELLIDAE)
- decorata, Pseudoscilla decorata L. de Folin, 1873 - syn of: Liamorpha decorata (L. de Folin, 1873) - (PYRAMIDELLIDAE)
- decorata, Pyrgulina decorata R.A. Philippi, 1849 - syn of: Chrysallida decorata (R.A. Philippi, 1849) - (PYRAMIDELLIDAE)
- decorata, Raphitoma decorata É.A.A. Locard, 1892 - syn of: Raphitoma cordieri (B.C.M. Payraudeau, 1826) - (RAPHITOMIDAE)
- decorata, Daphnella decorata C.B. Adams, 1850 - syn of: Daphnella lymneiformis W.P. Woodring, 1928 - (RAPHITOMIDAE)
- decorata, Benthonella decorata (K.H.J. Thiele, 1925) - (RISSOIDAE)
- decorata, Rissoa decorata R.A. Philippi, 1846 - (RISSOIDAE)
- decorata, Sonninia decorata Buckman † - (SONNINIIDAE) (FOSSIL)
- decorata, Temertassetia decorata D. Korn & al., 2010 † - (TEMERTASSETIIDAE) (FOSSIL)
- decorata, Terebra decorata G.P. Deshayes, 1867 - syn of: Terebra tessellata J.E. Gray, 1834 - (TEREBRIDAE)
- decorata, Anticlimax decorata E. Rolán, R. Fernández-Garcés & F. Rubio, 1997 - (TORNIDAE)
- decorata, Nototriphora decorata (A. Adams, 1850) - (TRIPHORIDAE)
- decorata, Mastoniaeforis decorata (C.F. Laseron, 1958) - (TRIPHORIDAE)
- decorata, Lasmigona decorata (I. Lea, 1852) - (UNIONIDAE)
- decorata, Timoclea decorata (W.J. Broderip & G.B. I Sowerby, 1829) - (VENERIDAE)
- decorata, Venus decorata W.J. Broderip & G.B. I Sowerby, 1829 - syn of: Timoclea decorata (W.J. Broderip & G.B. I Sowerby, 1829) - (VENERIDAE)
- decorata auporia, Opimilda decorata auporia R.K. Dell, 1956 - syn of: Mathilda decorata (C. Hedley, 1903) - (MATHILDIDAE)
- decorata auporia, Mathilda decorata auporia R.K. Dell, 1956 - syn of: Mathilda decorata (C. Hedley, 1903) - (MATHILDIDAE)
- decorata canarica, Triphora decorata canarica F. Nordsieck & F.F. Talavera, 1979 - syn of: Nototriphora canarica (F. Nordsieck & F.F. Talavera, 1979) - (TRIPHORIDAE)
- decorata canariensis, Triphora decorata canariensis F. Nordsieck, 1982 - syn of: Nototriphora canarica (F. Nordsieck & F.F. Talavera, 1979) - (TRIPHORIDAE)
- decorata diminuta, Euhadra decorata diminuta G. Toba & J.T. Kuroda, 1936 - (BRADYBAENIDAE)
- decorata ecaudata, Metzgeria decorata ecaudata É.A.A. Locard, 1897 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (PTYCHATRACTIDAE)
- decorata iwadensis, Euhadra decorata iwadensis G. Toba & J.T. Kuroda, 1936 - (BRADYBAENIDAE)
- decorata tobai, Euhadra decorata tobai Y. Hirase - (BRADYBAENIDAE)
- decoratoides, Acteocina decoratoides T. Habe, 1955 - (ACTEOCINIDAE)
- decoratum, Cardium decoratum Grewingk, 1850 - syn of: Clinocardium nuttallii (T.A. Conrad, 1837) - (CARDIIDAE)
- decoratum, Bothropoma decoratum K.H.J. Thiele, 1930 - (COLLONIIDAE)
- decoratum, Kidderia decoratum J.C. Melvill & R. Standen, 1914 - syn of: Kidderia bicolor (E.C. Von Martens, 1885) - (CYAMIIDAE)
- decoratum, Dentalium decoratum Münster, 1841 † - (DENTALIIDAE) (FOSSIL)
- decoratum, Pharciceras decoratum Bockwinkel, Becker & Ebbighausen, 2013 † - (PHARCICERATIDAE) (FOSSIL)
- decoratum, Parvamussium decoratum I. Hayami & T. Kase, 1993 - (PROPEAMUSSIIDAE)
- decoratus, Anomphalus decoratus (Delpey, 1941 †) - (ANOMPHALIDAE) (FOSSIL)
- decoratus, Turbinilopsis decoratus Delpey, 1941 † - syn of: Anomphalus decoratus (Delpey, 1941 †) - (ANOMPHALIDAE) (FOSSIL)
- decoratus, Drymaeus decoratus (H.C. Lea, 1838) - (BULIMULIDAE)
- decoratus, Callistochiton decoratus H.A. Pilsbry, 1893 ex Carpenter MS - (CALLISTOPLACIDAE)
- decoratus, Contumax decoratus C. Hedley, 1899 † - (CERITHIIDAE) (FOSSIL)
- decoratus, Chiton decoratus A.E. Reuss, 1860 - syn of: Lepidopleurus cajetanus (G.S. Poli, 1791) - (CHITONIDAE)
- decoratus, Africonus decoratus (D. Röckel, E. Rolán & A. Monteiro, 1980) - (CONIDAE)
- decoratus, Ambercyclus decoratus (Martin, 1858 †) - (EUCYCLIDAE) (FOSSIL)
- decoratus, Glacidorbis decoratus W.F. Ponder & G.J. Avern, 2000 - (GLACIDORBIDAE)
- decoratus, Peritrophon decoratus J. Marwick, 1931 † - (MURICIDAE) (FOSSIL)
- decoratus, Trophon decoratus É.A.A. Locard, 1897 - syn of: Boreotrophon dabneyi (P. Dautzenberg, 1889) - (MURICIDAE)
- decoratus, Pecten decoratus Klipstein, 1843 † - syn of: Pecten tubulifer Münster, 1841 † - (PECTINIDAE) (FOSSIL)
- decoratus diegoensis, Callistochiton decoratus diegoensis K.H.J. Thiele, 1910 - (CALLISTOPLACIDAE)
- decoratus goniobasis, Drymaeus decoratus goniobasis H.A. Pilsbry, 1898 - (BULIMULIDAE)
- decoratus lanceolata, Trophon decoratus lanceolata É.A.A. Locard, 1897 - syn of: Boreotrophon dabneyi (P. Dautzenberg, 1889) - (MURICIDAE)
- decoratus minor, Trophon decoratus minor É.A.A. Locard, 1897 - syn of: Boreotrophon dabneyi (P. Dautzenberg, 1889) - (MURICIDAE)
- decore, Loxo decore Dailey & W.P. Popenoe, 1966 † - (VENERIDAE) (FOSSIL)
- decorfasciata, Gibberula decorfasciata E. Rolán & F. Fernandes, 1997 - (CYSTISCIDAE)
- Decoriatrivia, syn of: Genus Dolichupis T. Iredale, 1930 (TRIVIIDAE)
- Decoriatrivia, syn of: Genus Dolichupis T. Iredale, 1930 (TRIVIIDAE)
- Decorifer, Subgenus Retusa (Decorifer) T. Iredale, 1937 (RETUSIDAE)
- Decorihastula, syn of: Genus Myurella R.B. Hinds, 1844 (TEREBRIDAE)
- Decoriropa, Genus Decoriropa Hyman & Stanisic, 2005 (CHAROPIDAE)
- decoris, Planolateralus decoris N.F. Sohl, 1960 † - (CALLIOTROPIDAE) (FOSSIL)
- Decorisepia, syn of: Genus Sepia C. Linnaeus, 1758 (SEPIIDAE)
- Decorites, Genus Decorites Ruzhencev & Bogoslovskaya, 1975 † (HOMOCERATIDAE) (FOSSIL)
- Decoritheca, Genus Decoritheca Syssoiev , 1968 † (NOVITATIDAE) (FOSSIL)
- Decorochilina, Genus Decorochilina Frýda , 1999 † (SOLENISCIDAE) (FOSSIL)
- decorosa, Diplommatina decorosa H.H. Godwin-Austen, 1892 - (DIPLOMMATINIDAE)
- decorosa, Pronucula decorosa (C. Hedley, 1902) - (NUCULIDAE)
- decorosa, Pronucula decorosa W.L. May, 1915 - syn of: Nucula mayi (T. Iredale, 1930) - (NUCULIDAE)
- decorosa, Nucula decorosa C. Hedley, 1902 - syn of: Pronucula decorosa (C. Hedley, 1902) - (NUCULIDAE)
- Decorospira, Genus Decorospira Blodgett & Johnson, 1992 † (PSEUDOPHORIDAE) (FOSSIL)
- decorsei, Leptospatha decorsei J. Germain, 1904 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- decorsei, Pseudoglessula decorsei E. Fischer-Piette & al., 1994 - (SUBULINIDAE)
- decorsei persinuata, Spatha decorsei persinuata J. Germain, 1907 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- decorsei sinuata, Leptospatha decorsei sinuata J. Germain, 1904 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- decorticata, Amastra decorticata J.T. Gulick, 1873 - (AMASTRIDAE)
- decorticata, Sinployea decorticata (A. Garrett, 1872) - (CHAROPIDAE)
- decorticata, Schilderia decorticata (J.L.M. Defrance, 1826 †) - (CYPRAEIDAE) (FOSSIL)
- decorticatum, Laevicardium decorticatum Wood, 1840 † - (CARDIIDAE) (FOSSIL)
- decorum, Vexillum decorum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- decorum, Athanatoceras decorum P.A. Zhuravleva, 1972 † - syn of: Chrysoceras tumidum (P.A. Zhuravleva, 1972 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- decorum, Graphoceras decorum Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- decorum, Eutrephoceras decorum Shimansky, 1975 † - (NAUTILIDAE) (FOSSIL)
- decorum, Platyceras decorum Talent & Philip, 1956 † - (PLATYCERATIDAE) (FOSSIL)
- decorum, Anthoceras decorum Teichert & Glenister, 1954 † - (PROTEROCAMEROCERATIDAE) (FOSSIL)
- decorus, Goniobranchus decorus (W.H. Pease, 1860) - (CHROMODORIDIDAE)
- decorus, Chromodoris decorus (W.H. Pease, 1860) - syn of: Goniobranchus decorus (W.H. Pease, 1860) - (CHROMODORIDIDAE)
- decorus, Yochelsonellis decorus (J. Perner, 1903 †) - (CYRTOLITIDAE) (FOSSIL)
- decorus, Appurdiceras decorus Henderson, 1990 † - (LABECERATIDAE) (FOSSIL)
- decorus, Macroscaphites decorus (K.E.I. von Eichwald, 1868 †) - (MACROSCAPHITIDAE) (FOSSIL)
- decorus, Phyllonotus peratus decorus A.M. Keen, 1960 - (MURICIDAE)
- decorus, Aequipecten decorus Cooke, 1919 † - (PECTINIDAE) (FOSSIL)
- decorus, Gyraulus decorus (Roshka, 1973 ) - (PLANORBIDAE)
- decorus, Conomurex decorus (P.F. Röding, 1798) - (STROMBIDAE)
- decorus, Strombus decorus P.F. Röding, 1798 - syn of: Conomurex decorus (P.F. Röding, 1798) - (STROMBIDAE)
- decorus, Helictites decorus McLearn, 1940 † - (THETIDITIDAE) (FOSSIL)
- decorus coniformis, Conomurex decorus coniformis (G.B. I Sowerby, 1842) - syn of: Conomurex coniformis (G.B. I Sowerby, 1842) - (STROMBIDAE)
- decorus masirensis, Conomurex decorus masirensis R.G. Moolenbeek & H. Dekker, 1993 - (STROMBIDAE)
- decorus persicus, Conomurex decorus persicus W.J. Swainson, 1821 - syn of: Conomurex persicus (W.J. Swainson, 1821) - (STROMBIDAE)
- decorus raybaudi, Strombus decorus raybaudi K. Nicolay & E. Romagna-Manoja, 1983 - syn of: Conomurex persicus (W.J. Swainson, 1821) - (STROMBIDAE)
- decorus raybaudii, Conomurex decorus raybaudii K. Nicolay & E. Romagna-Manoja, 1983 - (STROMBIDAE)
- decostata, Melanopsis croatica decostata Penecke, 1884 † - (MELANOPSIDAE) (FOSSIL)
- decostatus, Theodoxus militaris decostatus (Š. Brusina, 1897 †) - (NERITIDAE) (FOSSIL)
- decouxi, Odostomia decouxi E. Saurin, 1959 - (PYRAMIDELLIDAE)
- decrepitus, Conus decrepitus L.C. Kiener, 1845 - syn of: Floraconus cocceus (L.A. Reeve, 1844) - (CONIDAE)
- decresca, Austromitra decresca L.R.L. Simone & C.M. Cunha, 2012 - (COSTELLARIIDAE)
- decrescens, Orthoceras decrescens de Koninck, 1863 † - (ORTHOCERATIDAE) (FOSSIL)
- decresensis, Bothriembryon decresensis B.C. Cotton, 1940 - syn of: Bothriembryon mastersi (J.C. Cox, 1867) - (BOTHRIEMBRYONTIDAE)
- decresensis, Cassis decresensis C. Hedley, 1923 - syn of: Cassis fimbriata J.R.C. Quoy & J.P. Gaimard, 1833 - (CASSIDAE)
- decrespignyi, Vitrinula decrespignyi (H.C. Higgins, 1868) - (ARIOPHANTIDAE)
- decrespignyi, Opisthostoma decrespignyi (C.B. Adams, 1865) - (DIPLOMMATINIDAE)
- decreta, Charopa decreta (J. Gassies, 1863) - (CHAROPIDAE)
- decristofori, Helix decristofori N. Pini, 1876 - syn of: Cingulifera cingulatum frigidum (G.J. De Cristofori & G. Jan, 1832) - (HELICIDAE)
- decristoforis, Eulima decristoforis Stoppani, 1857 † - syn of: Pseudoscalites armatus (Stoppani, 1857 †) - (EULIMIDAE) (FOSSIL)
- dectica, Bradybaena dectica (J.F. Mabille, 1888) - (BRADYBAENIDAE)
- decumana, Ainicardita decumana A.M. Popov, 1983 † - (CARDITIDAE) (FOSSIL)
- decumanus, Cerion decumanus (A.E.J. Férussac, 1821) - (CERIONIDAE)
- decumbens, Tellina decumbens (P.P. Carpenter, 1865) - (TELLINIDAE)
- decumbens, Elpidollina decumbens P.P. Carpenter, 1865 - syn of: Tellina decumbens (P.P. Carpenter, 1865) - (TELLINIDAE)
- decumbens, Unio decumbens I. Lea, 1861 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- Decurambis, syn of: Genus Alasmidonta T. Say, 1818 (UNIONIDAE)
- decurata, Eriptychia decurata (J. de C. Sowerby, 1832 †) - (RINGICULIDAE) (FOSSIL)
- decurrens, Acteocina decurrens (A.E. Verrill & K.J. Bush, 1900) - (ACTEOCINIDAE)
- decurrens, Tonohamites decurrens Spath, 1924 † - (ANCYLOCERATIDAE) (FOSSIL)
- decurrens, Bucaniella decurrens d'Eichwald, 1860 † - syn of: Tetranota decurrens (d'Eichwald, 1860 †) - (BELLEROPHONTIDAE) (FOSSIL)
- decurrens, Nautilus decurrens d'Eichwald, 1860 † - (NAUTILIDAE) (FOSSIL)
- decurrens, Tetranota decurrens (d'Eichwald, 1860 †) - (PLECTONOTIDAE) (FOSSIL)
- decurrens, Chondropoma moestum decurrens (F. Poey, 1858) - (POMATIIDAE)
- decursa, Lophospira decursa Ulrich & Scofield, 1897 † - (LOPHOSPIRIDAE) (FOSSIL)
- decurtata, Brochina decurtata T.A. de M. Monterosato, 1884 - syn of: Caecum auriculatum decurtatum T.A. de M. Monterosato, 1884 - (CAECIDAE)
- decurtata, Cardita calyculata decurtata T.A. de M. Monterosato, 1884 - (CARDITIDAE)
- decurtata, Excussispira decurtata (P.M. Heude, 1885) - (CLAUSILIIDAE)
- decurtata, Strigatella decurtata L.A. Reeve, 1844 - (MITRIDAE)
- decurtata, Tugonia decurtata (A. Adams, 1851) - (MYIDAE)
- decurtata, Distugonia decurtata (A. Adams, 1851) - syn of: Tugonia decurtata (A. Adams, 1851) - (MYIDAE)
- decurtata, Cryptomya decurtata A. Adams, 1851 - syn of: Tugonia decurtata (A. Adams, 1851) - (MYIDAE)
- decurtata, Rissoa similis decurtata (T.A. de M. Monterosato, 1884) - (RISSOIDAE)
- decurtata, Styliolina decurtata Boucek, 1964 † - (STYLIOLINIDAE) (FOSSIL)
- decurtata leiostoma, Excussispira decurtata leiostoma (P.M. Heude, 1890) - (CLAUSILIIDAE)
- decurtatum, Caecum auriculatum decurtatum T.A. de M. Monterosato, 1884 - (CAECIDAE)
- decurtatum, Pisidium decurtatum (W.A. Lindholm, 1909) - (SPHAERIIDAE)
- decurtatum, Amuropisidium decurtatum W.A. Lindholm, 1909 - syn of: Pisidium decurtatum (W.A. Lindholm, 1909) - (SPHAERIIDAE)
- decurtatum, Oligostylus decurtatum (C.B. Adams, 1872) - (UROCOPTIDAE)
- decurtatus, Malleus decurtatus J.B.P.A. Lamarck, 1819 - syn of: Malleus regula (P. Forsskål in C. Niebuhr, 1775) - (MALLEIDAE)
- decurtatus, Unio decurtatus H. Drouët, 1893 - syn of: Unio abrantesianus É.A.A. Locard, 1899 - (UNIONIDAE)
- decurvata, Barbatia decurvata C.E. Lischke, 1869 - syn of: Barbatia virescens (L.A. Reeve, 1844) - (ARCIDAE)
- decurvata, Distugonia decurvata (C.B. Adams, 1851) - (MYIDAE)
- decurvata, Pedicularia decurvata É.A.A. Locard, 1897 - syn of: Pedicularia sicula W.J. Swainson, 1840 - (PEDICULARIIDAE)
- decurvatus, Unio decurvatus E.A. Rossmässler, 1835 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- decusata, Cardita decusata G.G. Münster, 1841 † - syn of: Cardita decussata G.G. Münster, 1841 † - (CARDITIDAE) (FOSSIL)
- decussata, Pomacea decussata (S. Moricand, 1836) - (AMPULLARIIDAE)
- decussata, Arca decussata C. Linnaeus, 1758 - syn of: Glycymeris decussata (C. Linnaeus, 1758) - (ARCIDAE)
- decussata, Arca decussata C. Linnaeus, 1758 - syn of: Glycymeris decussata (C. Linnaeus, 1758) - (ARCIDAE)
- decussata, Arca decussata G.B. I Sowerby, 1833 - syn of: Barbatia trapezina decussata (G.B. I Sowerby, 1833) - (ARCIDAE)
- decussata, Barbatia trapezina decussata (G.B. I Sowerby, 1833) - (ARCIDAE)
- decussata, Trishoplita eumenes decussata G.P.L.K. Gude, 1900 - (BRADYBAENIDAE)
- decussata, Crepidula decussata C.L.F. von Sandberger in O. Böttger, 1869 † - (CALYPTRAEIDAE) (FOSSIL)
- decussata, Cancellaria decussata G.B. I Sowerby, 1832 - (CANCELLARIIDAE)
- decussata, Cancellaria decussata P. Nyst, 1838 - syn of: Merica oblonga (G.B. I Sowerby, 1825) - (CANCELLARIIDAE)
- decussata, Cardita decussata G.G. Münster, 1841 † - (CARDITIDAE) (FOSSIL)
- decussata, Cardita decussata J.B.P.A. Lamarck, 1806 † - syn of: Choniocardia decussata (J.B.P.A. Lamarck, 1806 †) - (CARDITIDAE) (FOSSIL)
- decussata, Cassianella decussata (Münster, 1841 †) - (CASSIANELLIDAE) (FOSSIL)
- decussata, Noumea decussata (J.J. Risbec, 1928) - (CHROMODORIDIDAE)
- decussata, Thorunna decussata J.J. Risbec, 1928 - syn of: Noumea decussata (J.J. Risbec, 1928) - (CHROMODORIDIDAE)
- decussata, Megalophaedusa decussata E.C. Von Martens, 1877 - (CLAUSILIIDAE)
- decussata, Cumia decussata Ant. Bivona-Bernardi & And. Bivona-Bernardi, 1838 - syn of: Cumia reticulata (H.M.D. de Blainville, 1829) - (COLUBRARIIDAE)
- decussata, Pyrene decussata (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- decussata, Retizafra decussata (M. Lussi, 2002) - (COLUMBELLIDAE)
- decussata, Choniocardia decussata (J.B.P.A. Lamarck, 1806 †) - (CONDYLOCARDIIDAE) (FOSSIL)
- decussata, Corbula decussata G.P. Deshayes, 1844 - syn of: Tugonella decussata (G.P. Deshayes, 1844) - (CORBULIDAE)
- decussata, Sandbergeria decussata (J.B.P.A. Lamarck, 1804 †) - (DIASTOMATIDAE) (FOSSIL)
- decussata, Drillia decussata (J.B.P.A. Lamarck, 1804 †) - (DRILLIIDAE) (FOSSIL)
- decussata, Cassidula decussata H. Adams & A. Adams, 1855 - syn of: Cassidula sowerbyana (J.F. Gmelin, 1791) - (ELLOBIIDAE)
- decussata, Amaea decussata (J.B.P.A. Lamarck, 1804) - (EPITONIIDAE)
- decussata, Scalaria decussata W.H. Pease, 1867 - syn of: Epitonium sandwichense P. Nyst, 1871 - (EPITONIIDAE)
- decussata, Scalaria decussata J.B.P.A. Lamarck, 1804 - syn of: Amaea decussata (J.B.P.A. Lamarck, 1804) - (EPITONIIDAE)
- decussata, Eulima decussata J.G. Jeffreys, 1839 - (EULIMIDAE)
- decussata, Ficus decussata Wood, 1828 - (FICIDAE)
- decussata, Ficus decussata G.B. Sowerby, 1880 - syn of: Ficus ficus subintermedia (A.V.M.D. D'Orbigny, 1852) - (FICIDAE)
- decussata, Tugali decussata A. Adams, 1852 - (FISSURELLIDAE)
- decussata, Glycymeris decussata (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- decussata, Promathildia decussata Münster, 1841 † - syn of: Tofanella decussata (Münster, 1841 †) - (GORDENELLIDAE) (FOSSIL)
- decussata, Devonorhineoderma decussata (d'Archiac & de Verneuil, 1842 †) - (GOSSELETINIDAE) (FOSSIL)
- decussata, Amphidonte decussata G.A. Goldfuss, 1834 † - (GRYPHAEIDAE) (FOSSIL)
- decussata, Haliotis decussata R.A. Philippi, 1850 - syn of: Haliotis marmorata C. Linnaeus, 1758 - (HALIOTIDAE)
- decussata, Tingitana minetti decussata (P.M. Pallary, 1918) - (HELICIDAE)
- decussata, Chlorozyga decussata (E.K. Yoo, 1988 †) - (IMOGLOBIDAE) (FOSSIL)
- decussata, Retispira decussata C.L.F. von Sandberger, 1855 † - syn of: Retispira elegans (A.E.J. Férussac & A.V.M.D. D'Orbigny, 1840 †) - (KNIGHTITIDAE) (FOSSIL)
- decussata, Limopsis decussata (A. Adams, 1862) - (LIMOPSIDAE)
- decussata, Aspalima decussata (P. Nyst & G.D. Westendorp, 1839 †) - (LIMOPSIDAE) (FOSSIL)
- decussata, Nipponolimopsis decussata A. Adams, 1862 - syn of: Limopsis decussata (A. Adams, 1862) - (LIMOPSIDAE)
- decussata, Litiopa decussata A.A. Gould, 1852 - syn of: Litiopa melanostoma P.C.A.S.L. Rang, 1829 - (LITIOPIDAE)
- decussata, Ctena decussata (O.G. Costa, 1829) - (LUCINIDAE)
- decussata, Eucithara decussata (W.H. Pease, 1868) - (MANGELIIDAE)
- decussata, Curtitoma decussata (J.P.Y. Couthouy, 1839) - (MANGELIIDAE)
- decussata, Bela decussata (É.A.A. Locard, 1892) - (MANGELIIDAE)
- decussata, Buchozia decussata (A.E.M. Cossmann, 1892 †) - (MANGELIIDAE) (FOSSIL)
- decussata, Oenopota decussata T. Brown, 1827 - syn of: Curtitoma trevelliana (W. Turton, 1834) - (MANGELIIDAE)
- decussata, Melanopsis decussata A.E.J. Férussac, 1823 - syn of: Esperiana esperi (A.E.J. Férussac, 1823) - (MELANOPSIDAE)
- decussata, Mitra decussata F. Dujardin, 1837 - syn of: Mitromorpha decussata (F. Dujardin, 1837) - (MITRIDAE)
- decussata, Mitromorpha decussata (F. Dujardin, 1837) - (MITROMORPHIDAE)
- decussata, Drupa decussata L.A. Reeve, 1845 - syn of: Muricodrupa fiscella (J.F. Gmelin, 1791) - (MURICIDAE)
- decussata, Tugonella decussata (G.P. Deshayes, 1844) - (MYIDAE)
- decussata, Mya decussata G. Montagu, 1808 - syn of: Petricola lithophaga (A. Retzius, 1788) - (MYIDAE)
- decussata, Gruenewaldia decussata (Münster, 1838 †) - (MYOPHORIIDAE) (FOSSIL)
- decussata, Crenella decussata (G. Montagu, 1808) - (MYTILIDAE)
- decussata, Cassianopsis decussata (Münster, 1841 †) - (NERITOPSIDAE) (FOSSIL)
- decussata, Nucula decussata G.B. I Sowerby, 1833 - syn of: Nucula sulcata H.G. Bronn, 1831 - (NUCULIDAE)
- decussata, Chlamys decussata G.P. Deshayes, 1858 † - (PECTINIDAE) (FOSSIL)
- decussata, Pedicularia decussata A.A. Gould, 1855 - (PEDICULARIIDAE)
- decussata, Distorsio decussata A. Valenciennes, 1832 - (PERSONIDAE)
- decussata, Martesia decussata J.B.G.M. Bory De Saint-Vincent, 1827 - syn of: Martesia striata (C. Linnaeus, 1758) - (PHOLADIDAE)
- decussata, Pholadomya decussata (Mantell) † - (PHOLADOMYIDAE) (FOSSIL)
- decussata, Fossarus decussata Münster, 1841 † - syn of: Cassianopsis decussata (Münster, 1841 †) - (PLANAXIDAE) (FOSSIL)
- decussata, Pleurotomaria decussata d'Archiac & de Verneuil, 1842 † - syn of: Devonorhineoderma decussata (d'Archiac & de Verneuil, 1842 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- decussata, Licina decussata (J.B.P.A. Lamarck, 1822) - (POMATIIDAE)
- decussata, Hemizyga decussata E.K. Yoo, 1988 † - syn of: Chlorozyga decussata (E.K. Yoo, 1988 †) - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- decussata, Avicula decussata Münster, 1841 † - syn of: Cassianella decussata (Münster, 1841 †) - (PTERIIDAE) (FOSSIL)
- decussata, Chemnitzia decussata Hudleston † - (PYRAMIDELLIDAE) (FOSSIL)
- decussata, Parthenina decussata (G. Montagu, 1803) - (PYRAMIDELLIDAE)
- decussata, Pyrgulina decussata (A. Adams, 1863) - (PYRAMIDELLIDAE)
- decussata, Turbonilla decussata W.H. Pease, 1861 - syn of: Turbonilla varicosa (A. Adams, 1855) - (PYRAMIDELLIDAE)
- decussata, Rimella decussata F. Sacco, 1893 † - syn of: Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (RIMELLIDAE) (FOSSIL)
- decussata, Zebinella decussata (G. Montagu, 1803) - (RISSOINIDAE)
- decussata, Rissoina decussata G. Montagu, 1803 - syn of: Zebinella decussata (G. Montagu, 1803) - (RISSOINIDAE)
- decussata, Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (ROSTELLARIIDAE) (FOSSIL)
- decussata, Rostellaria decussata J.P.S. Grateloup, 1844 † - syn of: Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (ROSTELLARIIDAE) (FOSSIL)
- decussata, Scissurella decussata E.C. Munier-Chalmas, 1862 - syn of: Scissurella costata d'Orbigny, 1824 - (SCISSURELLIDAE)
- decussata, Scissurella decussata D'Orbigny, 1824 - syn of: Scissurella costata d'Orbigny, 1824 - (SCISSURELLIDAE)
- decussata, Brookula decussata (J.P.L. Pelseneer, 1903) - (SEGUENZIOIDEA (UNASSIGNED))
- decussata, Semele decussata W. Wood, 1815 - syn of: Semele proficua (R. Pulteney, 1799) - (SEMELIDAE)
- decussata, Simpulopsis decussata L. Pfeiffer, 1856 - (SIMPULOPSIDAE)
- decussata, Euglandina decussata (G.P. Deshayes, 1840) - (SPIRAXIDAE)
- decussata, Globozyga decussata E.K. Yoo, 1988 † - (STROBEIDAE) (FOSSIL)
- decussata, Tellina decussata J.B.P.A. Lamarck, 1818 - syn of: Tellina victoriae J.H. Gatliff & C.J. Gabriel, 1914 - (TELLINIDAE)
- decussata, Tellina decussata W. Wood, 1815 - syn of: Semele proficua (R. Pulteney, 1799) - (TELLINIDAE)
- decussata, Tofanella decussata (Münster, 1841 †) - (TOFANELLIDAE) (FOSSIL)
- decussata, Vitrinella decussata P.P. Carpenter, 1857 - syn of: Parviturboides decussatus (P.P. Carpenter, 1857) - (TORNIDAE)
- decussata, Coralliophaga decussata (L.A. Reeve, 1843) - (TRAPEZIDAE)
- decussata, Stomatia decussata A. Adams, 1850 - (TROCHIDAE)
- decussata, Tropidodiscus decussata Spitz, 1907 † - (TROPIDODISCIDAE) (FOSSIL)
- decussata, Eopleurotoma decussata (J.B.P.A. Lamarck, 1804 †) - (TURRIDAE) (FOSSIL)
- decussata, Pleurotoma decussata J.P.Y. Couthouy, 1839 - syn of: Curtitoma decussata (J.P.Y. Couthouy, 1839) - (TURRIDAE)
- decussata, Pleurotoma decussata R.A. Philippi, 1844 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (TURRIDAE)
- decussata, Turritella decussata Münster, 1841 † - syn of: Tofanella decussata (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- decussata, Macromphalina decussata (A.E.M. Cossmann, 1888 †) - (VANIKORIDAE) (FOSSIL)
- decussata, Leukoma decussata (G.P. Deshayes, 1853) - (VENERIDAE)
- decussata, Venerupis decussata (C. Linnaeus, 1758) - (VENERIDAE)
- decussata, Saxidomus decussata G.P. Deshayes, 1853 - syn of: Leukoma decussata (G.P. Deshayes, 1853) - (VENERIDAE)
- decussata, Venerupis decussata R.A. Philippi, 1836 - syn of: Lajonkairia lajonkairii (B.C.M. Payraudeau, 1826) - (VENERIDAE)
- decussata, Serpulorbis decussata J.F. Gmelin, 1791 - syn of: Thylacodes decussatus (J.F. Gmelin, 1791) - (VERMETIDAE)
- decussata, Fusivoluta decussata K.H. Barnard, 1959 - (VOLUTIDAE)
- decussata clarkei, Fusivoluta decussata clarkei H.A. Rehder, 1969 - syn of: Fusivoluta clarkei H.A. Rehder, 1969 - (VOLUTIDAE)
- decussata commissionis, Ampullaria decussata commissionis H.F.A. von Ihering, 1898 - syn of: Pomacea commissionis (H.F.A. von Ihering, 1898) - (AMPULLARIIDAE)
- decussata finmarchia, Bela decussata finmarchia H.B.S. Friele, 1886 - syn of: Bela decussata (É.A.A. Locard, 1892) - (MANGELIIDAE)
- decussata laticostata, Crenella decussata laticostata O.A. Scarlato, 1960 - syn of: Crenella decussata (G. Montagu, 1808) - (MYTILIDAE)
- decussata plesiomorpha, Eopleurotoma decussata plesiomorpha M.E.A. de Boury, 1899 † - (TURRIDAE) (FOSSIL)
- decussata sinistrorsa, Devonorhineoderma decussata sinistrorsa (C.L.F. von Sandberger, 1855 †) - (GOSSELETINIDAE) (FOSSIL)
- decussata sinistrorsa, Pleurotomaria decussata sinistrorsa C.L.F. von Sandberger, 1855 † - syn of: Devonorhineoderma decussata sinistrorsa (C.L.F. von Sandberger, 1855 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- decussata yaucoi, Licina decussata yaucoi H.B. Baker, 1962 - (POMATIIDAE)
- decussatula, Cookeconcha decussatula (W.H. Pease, 1866) - (ENDODONTIDAE)
- decussatula, Helix decussatula W.H. Pease - syn of: Cookeconcha decussatula (W.H. Pease, 1866) - (HELICIDAE)
- decussatula, Samoana decussatula L. Pfeiffer - (PARTULIDAE)
- decussatula, Gulella decussatula (H.B. Preston, 1913) - (STREPTAXIDAE)
- decussatulum, Pomatias decussatulum C.B. Adams, 1849 - syn of: Adamsiella mirabilis (W. Wood, 1828) - (POMATIIDAE)
- decussatum, Buccinum decussatum C. Linnaeus, 1758 - syn of: Phalium decussatum (C. Linnaeus, 1758) - (BUCCINIDAE)
- decussatum, Buccinum decussatum L.C. Kiener, 1841 - syn of: Phrontis pagoda (L.A. Reeve, 1844) - (BUCCINIDAE)
- decussatum, Caecum decussatum L. de Folin, 1869 - syn of: Caecum plicatum Carpenter, 1858 - (CAECIDAE)
- decussatum, Caecum decussatum Folin, 1869 - syn of: Caecum plicatum Carpenter, 1858 - (CAECIDAE)
- decussatum, Phalium decussatum (C. Linnaeus, 1758) - (CASSIDAE)
- decussatum, Bittium decussatum (P.P. Carpenter, 1857) - (CERITHIIDAE)
- decussatum, Conocardium decussatum R. Etheridge jr., 1873 † - (CONOCARDIIDAE) (FOSSIL)
- decussatum, Taselasmodum decussatum Guo 1985 † - (CYCLOCONCHIDAE) (FOSSIL)
- decussatum, Bela decussatum É.A.A. Locard, 1892 - syn of: Bela laevigata palli F. Nordsieck, 1968 - (MANGELIIDAE)
- decussatum, Raphitoma decussatum É.A.A. Locard, 1892 - syn of: Bela decussata (É.A.A. Locard, 1892) - (RAPHITOMIDAE)
- decussatum flammeolum, Phalium decussatum flammeolum (P.F. Röding, 1798) - (CASSIDAE)
- decussatus, Acroloxus decussatus (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (ACROLOXIDAE) (FOSSIL)
- decussatus, Neopetraeus decussatus (L.A. Reeve, 1849) - (BULIMULIDAE)
- decussatus, Chiton decussatus L.A. Reeve, 1847 - syn of: Ischnochiton contractus (L.A. Reeve, 1847) - (CHITONIDAE)
- decussatus, Conus decussatus G.P. Deshayes, 1823 † - (CONIDAE) (FOSSIL)
- decussatus, Ornollus decussatus (von Sandberger, 1854 †) - (EUOMPHALINA (UNASSIGNED)) (FOSSIL)
- decussatus, Ventridens decussatus B. Walker & H.A. Pilsbry, 1902 - (GASTRODONTIDAE)
- decussatus, Retispira decussatus (Fleming, 1828 †) - (KNIGHTITIDAE) (FOSSIL)
- decussatus, Oenopota decussatus T. Brown, 1827 - syn of: Curtitoma trevelliana (W. Turton, 1834) - (MANGELIIDAE)
- decussatus, Jaton decussatus (J.F. Gmelin, 1791) - (MURICIDAE)
- decussatus, Mytilus decussatus J.B.P.A. Lamarck, 1819 - syn of: Aulacomya atra (J.I. Molina, 1782) - (MYTILIDAE)
- decussatus, Mytilus decussatus (G. Montagu, 1808) - syn of: Crenella decussata (G. Montagu, 1808) - (MYTILIDAE)
- decussatus, Phos decussatus (A. von Koenen, 1872 ) - (NASSARIIDAE)
- decussatus, Ancylus decussatus A.E. Reuss in A.E. Reuss & Meyer, 1849 † - syn of: Acroloxus decussatus (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (PLANORBIDAE) (FOSSIL)
- decussatus, Pyrunculus decussatus (C.B. Adams, 1850) - (RETUSIDAE)
- decussatus, Dientomochilus decussatus J.L.M. Defrance in B. de Basterot, 1825 † - syn of: Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (RIMELLIDAE) (FOSSIL)
- decussatus, Spondylus decussatus A. Fuchs, 1879 † - (SPONDYLIDAE) (FOSSIL)
- decussatus, Streptaxis decussatus (H.A. Pilsbry, 1898) - (STREPTAXIDAE)
- decussatus, Strombus decussatus C. Mayer, 1867 † - syn of: Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (STROMBIDAE) (FOSSIL)
- decussatus, Tectus decussatus T. Brown, 1827 - syn of: Onoba semicostata (G. Montagu, 1803) - (TEGULIDAE)
- decussatus, Parviturboides decussatus (P.P. Carpenter, 1857) - (TORNIDAE)
- decussatus, Solariorbis decussatus (C.L.F. von Sandberger, 1859 †) - (TORNIDAE) (FOSSIL)
- decussatus, Turbo decussatus G. Montagu, 1803 - syn of: Parthenina decussata (G. Montagu, 1803) - (TURBINIDAE)
- decussatus, Macromphalus decussatus (A. Adams, 1860) - (VANIKORIDAE)
- decussatus, Vanikoro decussatus A. Adams, 1860 - syn of: Macromphalus decussatus (A. Adams, 1860) - (VANIKORIDAE)
- decussatus, Tapes decussatus C. Linnaeus, 1758 - syn of: Venerupis decussata (C. Linnaeus, 1758) - (VENERIDAE)
- decussatus, Thylacodes decussatus (J.F. Gmelin, 1791) - (VERMETIDAE)
- decussatus angolensis, Jaton decussatus angolensis P. Ryall, 1984 - syn of: Jaton sinespina G.J. Vermeij & R. Houart, 1996 - (MURICIDAE)
- decussatus brownii, Neopetraeus decussatus brownii H.A. Pilsbry, 1898 - (BULIMULIDAE)
- decussatus myristicus, Neopetraeus decussatus myristicus (L.A. Reeve, 1849) - (BULIMULIDAE)
- Decussicardium, syn of: Subgenus Nemocardium (Microcardium) A.M. Keen, 1937 (CARDIIDAE)
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