- dedecora, Ptychalaea dedecora H.A. Pilsbry, 1902 - (VERTIGINIDAE)
- dedecora tamagonari, Ptychalaea dedecora tamagonari H.A. Pilsbry & Y. Hirase, 1904 - (VERTIGINIDAE)
- dedegoelensis, Metafruticicola dedegoelensis B. Hausdorf, B.A. Gümüs & M.Z. Yildirim, 2004 - (HYGROMIIDAE)
- dedicata, Brevinenia dedicata (W.K. Weyrauch & A. Zilch, 1954) - (CLAUSILIIDAE)
- dedicata, Ehrmanniella dedicata W.K. Weyrauch & A. Zilch, 1954 - syn of: Brevinenia dedicata (W.K. Weyrauch & A. Zilch, 1954) - (CLAUSILIIDAE)
- dedonderi, Eclectofusus dedonderi (K. Fraussen & R. Hadorn, 2001) - (BUCCINIDAE)
- dedonderi, Calliostoma dedonderi C. Vilvens, 2000 - (CALLIOSTOMATIDAE)
- dedonderi, Glyphostoma dedonderi R. Goethaels & D. Monsecour, 2008 - (CLATHURELLIDAE)
- dedonderi, Cosmioconcha dedonderi D. Monsecour & D. Monsecour, 2006 - (COLUMBELLIDAE)
- dedonderi, Rolaniconus dedonderi R. Goethaels & D. Monsecour, 2013 - (CONIDAE)
- dedonderi, Antillophos dedonderi K. Fraussen & G.T. Poppe, 2005 - (NASSARIIDAE)
- dedonderi, Clathroterebra dedonderi (Y. Terryn, 2003) - (TEREBRIDAE)
- dedonderorum, Solariella dedonderorum (G.T. Poppe, S.P. Tagaro & H. Dekker, 2006) - (SOLARIELLIDAE)
- dedovi, Bythinella dedovi P. Glöer & D.G. Georgiev, 2011 - (BYTHINELLIDAE)
- dedovi, Montenegrina dedovi H. Nordsieck, 2009 - syn of: Montenegrina laxa dedovi H. Nordsieck, 2009 - (CLAUSILIIDAE)
- dedovi, Montenegrina laxa dedovi H. Nordsieck, 2009 - (CLAUSILIIDAE)
- dedovi lakmosensis, Montenegrina dedovi lakmosensis H. Nordsieck, 2009 - syn of: Montenegrina laxa lakmosensis H. Nordsieck, 2009 - (CLAUSILIIDAE)
- deducta, Austrotoma deducta J. Marwick, 1931 † - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- deducta, Nerinea deducta Hudleston † - (NERINEIDAE) (FOSSIL)
- deeae, Cystiscus deeae A. Wakefield & T. McCleery, 2006 - (CYSTISCIDAE)
- deeckei, Peltocrioceras deeckei (J. Favre, 1908 †) - (AEGOCRIOCERATIDAE) (FOSSIL)
- deeckei, Ancyloceras deeckei A. von Koenen, 1904 † - (ANCYLOCERATIDAE) (FOSSIL)
- deeckei, Belemnites deeckei Kilian, 1889 † - syn of: Duvalia deeckei (Kilian, 1889 †) - (BELEMNITELLIDAE) (FOSSIL)
- deeckei, Crioceras deeckei J. Favre, 1908 † - syn of: Peltocrioceras deeckei (J. Favre, 1908 †) - (CRIOCERATITIDAE) (FOSSIL)
- deeckei, Duvalia deeckei (Kilian, 1889 †) - (DUVALIIDAE) (FOSSIL)
- deecresswellae, Leptochiton deecresswellae P. Anseeuw & Y. Terryn, 2002 - (LEPTOCHITONIDAE)
- deelemanorum, Virpazaria deelemanorum E. Gittenberger, 1975 - (SPELAEODISCIDAE)
- defayae, Subtorcapella defayae J.J. Vermeulen, 2002 † - (BARREMITIDAE) (FOSSIL)
- defectiva, Candidula defectiva É.A.A. Locard, 1899 - syn of: Candidula olissipensis (G. Servain, 1880) - (HYGROMIIDAE)
- defensa, Gymnodoris defensa L.S.R. Bergh, 1905 - syn of: Gymnodoris citrina (L.S.R. Bergh, 1877) - (GYMNODORIDIDAE)
- defensa, Melanopsis defensa A. Fuchs, 1870 † - (MELANOPSIDAE) (FOSSIL)
- defensa, Nembrotha defensa L.S.R. Bergh, 1905 - syn of: Nembrotha citrina (L.S.R. Bergh, 1875) - (POLYCERIDAE)
- defensa trochiformis, Melanopsis defensa trochiformis A. Fuchs, 1870 † - (MELANOPSIDAE) (FOSSIL)
- deferiana, Candidula deferiana J.R. Bourguignat in É.A.A. Locard, 1882 - syn of: Candidula intersecta (J.L.M. Poiret, 1801) - (HYGROMIIDAE)
- deffisi, Pterodonta deffisi A. Thomas & F. Péron, 1889 † - (TYLOSTOMATIDAE) (FOSSIL)
- deficerus, Nodopericyclus deficerus D. Korn & al., 2010 † - (PERICYCLIDAE) (FOSSIL)
- deficiens, Tremanotus deficiens J. Perner, 1903 † - (BUCANIIDAE) (FOSSIL)
- deficiens, Miltoceras deficiens Wiedenmayer, 1980 † - (COELOCERATIDAE) (FOSSIL)
- deficiens, Lutetia deficiens A.E.M. Cossmann, 1885 † - (LUTETIIDAE) (FOSSIL)
- deficiens, Torrella deficiens (J. Gundlach in L. Pfeiffer, 1857) - (POMATIIDAE)
- defilippi, Macrotritopus defilippi (J.B. Vérany, 1851) - (OCTOPODIDAE)
- defilippi, Octopus defilippi J.B. Vérany, 1851 - syn of: Macrotritopus defilippi (J.B. Vérany, 1851) - (OCTOPODIDAE)
- defilippi sirikulensis, Unio defilippi sirikulensis G. Nevill, 1878 - syn of: Lymnaea sirikulensis (G. Nevill, 1878) - (UNIONIDAE)
- defilippii, Acanthochitona defilippii (C.M. Tapparone-Canefri, 1874) - (ACANTHOCHITONIDAE)
- defilippii, Aeolidia defilippii J.B. Vérany, 1846 - (AEOLIDIIDAE)
- defilippii, Amycula defilippii C.M. Tapparone-Canefri, 1874 - syn of: Acanthochitona defilippii (C.M. Tapparone-Canefri, 1874) - (MOPALIIDAE)
- definita, Cepolis definita H.C. Fulton, 1908 - (CEPOLIDAE)
- definita, Palaina capillacea definita T. Iredale, 1944 - (DIPLOMMATINIDAE)
- definita, Eulima definita K.H.J. Thiele, 1925 - (EULIMIDAE)
- definita, Ennucula definita (T. Iredale, 1939) - (NUCULIDAE)
- defiorei, Olivella defiorei M.A. Klappenbach, 1964 - (OLIVELLIDAE)
- defiorei, Jujubinus defiorei G.S. Coen, 1937 - syn of: Jujubinus striatus (C. Linnaeus, 1758) - (TROCHIDAE)
- defixa, Tonkinospira defixa (A.R.J.B. Bavay & P. Dautzenberg, 1912) - (HYPSELOSTOMATIDAE)
- deflatus, Megadesmus deflatus C.O. Waterhouse, 1983 † - (MEGADESMIDAE) (FOSSIL)
- deflecta, Kimberleytrachia deflecta (G.A. Solem, 1985) - (CAMAENIDAE)
- deflecta, Torresitrachia deflecta G.A. Solem, 1985 - syn of: Kimberleytrachia deflecta (G.A. Solem, 1985) - (CAMAENIDAE)
- deflectus, Bellerophon deflectus Chronic, 1952 † - (BELLEROPHONTIDAE) (FOSSIL)
- deflectus, Bucanopsis deflectus Weller, 1900 † - syn of: Retispira deflectus (Weller, 1900 †) - (BELLEROPHONTIDAE) (FOSSIL)
- deflectus, Retispira deflectus (Weller, 1900 †) - (KNIGHTITIDAE) (FOSSIL)
- deflectus, Gyraulus deflectus (T. Say, 1824) - (PLANORBIDAE)
- deflersi, Epitonium deflersi (F.P. Jousseaume, 1912) - (EPITONIIDAE)
- deflexa, Aegista deflexa H.A. Pilsbry, 1902 - (BRADYBAENIDAE)
- deflexa, Moellendorffia spurca deflexa O.F. von Möllendorff, 1901 - (CAMAENIDAE)
- deflexa, Helix deflexa L.F.A. Souleyet, 1852 - syn of: Haploptychius deflexus (L.F.A. Souleyet, 1852) - (HELICIDAE)
- deflexa, Fluviopupa deflexa (G.R. von Frauenfeld, 1863) - (HYDROBIIDAE)
- deflexa, Lithoglyphus deflexa G.R. von Frauenfeld, 1863 - syn of: Fluviopupa deflexa (G.R. von Frauenfeld, 1863) - (LITHOGLYPHIDAE)
- deflexa, Murchisonia deflexa Lindström, 1884 † - (MURCHISONIIDAE) (FOSSIL)
- deflexa, Naviculavolva deflexa (G.B. II Sowerby, 1848) - (OVULIDAE)
- deflexa, Ovula deflexa G.B. II Sowerby, 1848 - syn of: Naviculavolva deflexa (G.B. II Sowerby, 1848) - (OVULIDAE)
- deflexa, Cymbula deflexa G.B. II Sowerby, 1848 - syn of: Naviculavolva deflexa (G.B. II Sowerby, 1848) - (PATELLIDAE)
- deflexa, Guerichina strangulata deflexa Alberti, 2000 † - (PENEAUIIDAE) (FOSSIL)
- deflexa, Valvata deflexa C.L.F. von Sandberger, 1863 † - syn of: Planorbis crassilabris C.L.F. von Sandberger, 1875 † - (VALVATIDAE) (FOSSIL)
- deflexa barbarensis, Ovula deflexa barbarensis W.H. Dall, 1892 - syn of: Simnia barbarensis W.H. Dall, 1892 - (OVULIDAE)
- deflexa barbarensis, Simnia deflexa barbarensis W.H. Dall, 1892 - syn of: Simnia barbarensis W.H. Dall, 1892 - (OVULIDAE)
- Deflexia, Genus Deflexia Dorodnova & Klishevich, 1989 † (TENTACULITA (UNASSIGNED)) (FOSSIL)
- deflexum, Hyperlioceras deflexum S.S. Buckman, 1907 † - (GRAPHOCERATIDAE) (FOSSIL)
- deflexum, Ovula deflexum G.B. II Sowerby, 1848 - syn of: Naviculavolva deflexa (G.B. II Sowerby, 1848) - (OVULIDAE)
- deflexum, Pisidium deflexum V. Sterki, 1922 - syn of: Pisidium adamsi W. Stimpson, 1851 - (SPHAERIIDAE)
- deflexus, Gyraulus deflexus (C.L.F. von Sandberger, 1859) - (PLANORBIDAE)
- deflexus, Haploptychius deflexus (L.F.A. Souleyet, 1852) - (STREPTAXIDAE)
- deflexus, Strombus deflexus G. Bonelli, 1827 † - syn of: Varicospira decussata (J.L.M. Defrance in B. de Basterot, 1825 †) - (STROMBIDAE) (FOSSIL)
- deflorata, Keraea deflorata (R.T. Lowe, 1855) - (DISCIDAE)
- deflorata, Janulus deflorata (R.T. Lowe, 1854) - (GASTRODONTIDAE)
- deflorata, Tropidophora deflorata (P.M.A. Morelet, 1876) - (POMATIIDAE)
- deflorata, Asaphis deflorata (C. Linnaeus, 1758) - (PSAMMOBIIDAE)
- deflorata, Venus deflorata I. von Born, 1778 - syn of: Venerupis decussata (C. Linnaeus, 1758) - (VENERIDAE)
- deflorescens, Varicella deflorescens H. Vendryes, 1901 - (OLEACINIDAE)
- defluxa, Mareleptopoma defluxa E. Rolán, 2005 - (PICKWORTHIIDAE)
- defluxum, Villania defluxum Buckman, 1923 † - (PHRICODOCERATIDAE) (FOSSIL)
- defoliana, Odostomia defoliana W.H. Dall & P. Bartsch, 1909 - syn of: Odostomia defolinia W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- Defolinia, Subgenus Caecum (Defolinia) N.E. Weisbord, 1962 † (CAECIDAE) (FOSSIL)
- defolinia, Odostomia defolinia W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- defolinia contracta, Odostomia defolinia contracta (L. de Folin, 1872) - (PYRAMIDELLIDAE)
- defolinia difficilis, Odostomia defolinia difficilis W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- defontii, Chondroceras defontii (McLearn, 1928 †) - (SPHAEROCERATIDAE) (FOSSIL)
- defordi, Metoicoceras defordi A.T. Young, 1957 † - syn of: Metoicoceras mosbyense Cobban, 1953 † - (ACANTHOCERATIDAE) (FOSSIL)
- defordi, Neocrimites defordi Miller & Furnish, 1940 † - (ADRIANITIDAE) (FOSSIL)
- deforgesi, Mitrella deforgesi K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- deforgesi, Alisimitra deforgesi A.E. Fedosov, M. Herrmann & P. Bouchet, 2017 - (COSTELLARIIDAE)
- deforgesi, Austrasiatica deforgesi (F.Jr. Lorenz, 2002) - (CYPRAEIDAE)
- deforgesi, Dentalium deforgesi V. Scarabino, 1995 - (DENTALIIDAE)
- deforgesi, Leptochiton deforgesi B.I. Sirenko, 2001 - (LEPTOCHITONIDAE)
- deforgesi, Phos deforgesi K. Fraussen, 2003 - (NASSARIIDAE)
- deforgesi, Dentiovula deforgesi F.Jr. Lorenz & D. Fehse, 2009 - (OVULIDAE)
- deforgesi, Perotrochus deforgesi B. Métivier, 1990 - (PLEUROTOMARIIDAE)
- deforgesi, Spondylus deforgesi K.L. Lamprell & J.M. Healy, 2001 - (SPONDYLIDAE)
- deformata, Archinacella deformata (J.W. Hall, 1847 †) - (ARCHINACELLIDAE) (FOSSIL)
- deformata, Euryzone deformata J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- deformata, Plagigeyeria deformata (J.L. Nicolas, 1891) - (HYDROBIIDAE)
- deformata, Moerchia deformata F. Rubio & E. Rolán, 2014 - (PYRAMIDELLIDAE)
- deforme, Platyostoma deforme (Sedgwick & Murchison, 1840 †) - (PLATYCERATIDAE) (FOSSIL)
- deforme, Abra deforme R.A. Philippi, 1849 - syn of: Abra lioica W.H. Dall, 1886 - (SEMELIDAE)
- deformis, Billingsites deformis (K.E.I. von Eichwald, 1860 †) - (BEYRICHITIDAE) (FOSSIL)
- deformis, Pyrulofusus deformis (L.A. Reeve, 1847) - (BUCCINIDAE)
- deformis, Crucibulum deformis (J.B.P.A. Lamarck, 1822 †) - (CALYPTRAEIDAE) (FOSSIL)
- deformis, Capulus deformis J. Wanner, 1922 † - syn of: Platyceras abundans (J. Wanner, 1922 †) - (CAPULIDAE) (FOSSIL)
- deformis, Naticopsis deformis Yin, 1932 † - (DELPHINULOPSIDAE) (FOSSIL)
- deformis, Naticopsis deformis Girty, 1909 † - (DELPHINULOPSIDAE) (FOSSIL)
- deformis, Scalenostoma deformis W.H. Pease, 1867 - syn of: Scalenostoma subulatum (W.J. Broderip, 1832) - (EULIMIDAE)
- deformis, Ficus deformis J.B.P.A. Lamarck, 1822 - syn of: Coralliophila erosa (P.F. Röding, 1798) - (FICIDAE)
- deformis, Grandipatula deformis Yu & Pan, 1982 † - (GRANDIPATULIDAE) (FOSSIL)
- deformis, Leiostyla deformis T.V. Wollaston, 1878 - syn of: Leiostyla loweana T.V. Wollaston, 1878 - (LAURIIDAE)
- deformis, Demissa deformis (G. Nevill & H. Nevill, 1874) - (MARGINELLIDAE)
- deformis, Volvarina deformis G. Nevill & H. Nevill, 1874 - syn of: Demissa deformis (G. Nevill & H. Nevill, 1874) - (MARGINELLIDAE)
- deformis, Ceraunocochlis deformis Erwin, 1988 † - (MEEKOSPIRIDAE) (FOSSIL)
- deformis, Muricopsis deformis (L.A. Reeve, 1846) - (MURICIDAE)
- deformis, Drupa deformis L.A. Reeve, 1846 - syn of: Muricopsis deformis (L.A. Reeve, 1846) - (MURICIDAE)
- deformis, Coralliophila deformis J.B.P.A. Lamarck, 1822 - syn of: Coralliophila erosa (P.F. Röding, 1798) - (MURICIDAE)
- deformis, Cellana deformis (K. Martin, 1883 †) - (NACELLIDAE) (FOSSIL)
- deformis, Buccinanops deformis (P.P. King & W.J. Broderip, 1832) - (NASSARIIDAE)
- deformis, Nassarius deformis G.S. Coen, 1933 † - syn of: Tritia mutabilis (C. Linnaeus, 1758 †) - (NASSARIIDAE) (FOSSIL)
- deformis, Ostrea deformis J.B.P.A. Lamarck, 1806 - syn of: Nanostrea fluctigera (F.P. Jousseaume in É. Lamy, 1925) - (OSTREIDAE)
- deformis, Patella deformis Martin, 1882 † - (PATELLIDAE) (FOSSIL)
- deformis, Pecten deformis R. Tate, 1887 † - (PECTINIDAE) (FOSSIL)
- deformis, Pecten deformis W.M. Gabb, 1864 † - (PECTINIDAE) (FOSSIL)
- deformis, Planorbis deformis Hartmann, 1844 - syn of: Gyraulus acronicus (A.E.J. Férussac, 1807) - (PLANORBIDAE)
- deformis, Streptartemon deformis (A.E.J. Férussac, 1821) - (STREPTAXIDAE)
- deformis, Strombus deformis J.E. Gray in E. Griffith & E. Pidgeon, 1834 - syn of: Dolomena plicata (P.F. Röding, 1798) - (STROMBIDAE)
- deformis, Amplovalvata deformis Pan, 1980 † - (VALVATIDAE) (FOSSIL)
- deformis, Yoldia deformis Kogan, 1939 † - syn of: Portlandella watasei (K. Kanehara, 1937 †) - (YOLDIIDAE) (FOSSIL)
- deformis harpa, Pyrulofusus deformis harpa O.A.L. Mörch, 1857 - syn of: Pyrulofusus harpa (O.A.L. Mörch, 1857) - (BUCCINIDAE)
- deformis hawaiiensis, Stilifer deformis hawaiiensis H.A. Pilsbry, 1921 - syn of: Scalenostoma subulatum (W.J. Broderip, 1832) - (EULIMIDAE)
- deformis irregularis, Crucibulum deformis irregularis G.F. Dollfus & P. Dautzenberg, 1886 - (CALYPTRAEIDAE)
- defossa, Awateria defossa Powell, 1942 † - (BORSONIIDAE) (FOSSIL)
- defossa, Muricopsis defossa Pilkington † - (MURICIDAE) (FOSSIL)
- defossata, Yoldia defossata Quilty & al., 2016 † - (YOLDIIDAE) (FOSSIL)
- Defossiceras, Genus Defossiceras Buckman, 1913 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- defossum, Defossiceras defossum (Simpson) † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- defrancei, Hemitoma defrancei (A.E.M. Cossmann, 1906 †) - (FISSURELLIDAE) (FOSSIL)
- defrancei, Erycina defrancei Recluz, 1844 † - (LASAEIDAE) (FOSSIL)
- defrancei, Eomiltha defrancei (G.P. Deshayes, 1857 †) - (LUCINIDAE) (FOSSIL)
- defrancei, Murchisonia defrancei d'Archiac & de Verneuil, 1842 † - (MURCHISONIIDAE) (FOSSIL)
- defrancei, Pteria defrancei G.P. Deshayes, 1858 † - (PTERIIDAE) (FOSSIL)
- defrancei, Raphitoma defrancei Tucker & Renard, 1993 † - (RAPHITOMIDAE) (FOSSIL)
- defrancei, Teinostoma defrancei (B. de Basterot, 1825 †) - (TORNIDAE) (FOSSIL)
- defrancei dameriacensis, Raphitoma defrancei dameriacensis G.P. Deshayes, 1865 † - (RAPHITOMIDAE) (FOSSIL)
- Defrancia, syn of: Genus Pleurotomoides H.G. Bronn (CLATHURELLIDAE)
- defrancii, Afrocardium defrancii (G.P. Deshayes, 1858 †) - (CARDIIDAE) (FOSSIL)
- defrancii, Pseudoaluco defrancii (G.P. Deshayes, 1833 †) - (CERITHIIDAE) (FOSSIL)
- defrancii, Conus defrancii Deshayes, 1865 † - (CONIDAE) (FOSSIL)
- defrancii, Gastrochaena defrancii G.P. Deshayes, 1856 † - (GASTROCHAENIDAE) (FOSSIL)
- defrancii, Pycnodonte defrancii (G.P. Deshayes, 1832 †) - (GRYPHAEIDAE) (FOSSIL)
- defrancii, Mitra defrancii B.C.M. Payraudeau, 1827 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- defrancii, Pleurotomaria defrancii d'Archiac & de Verneuil, 1842 † - syn of: Murchisonia defrancei d'Archiac & de Verneuil, 1842 † - (PLEUROTOMARIIDAE) (FOSSIL)
- defrenata, Ranularia defrenata T. Iredale, 1936 - syn of: Ranularia sinensis (L.A. Reeve, 1844) - (RANELLIDAE)
- defrenatum, Campanile defrenatum (A. De Gregorio, 1896 †) - (CAMPANILIDAE) (FOSSIL)
- Defrenoyia, syn of: Genus Dufrenoyia Kilian & Reboul, 1915 † (DESHAYESITIDAE) (FOSSIL)
- defuncta, Leptachatina defuncta C.M. Cooke, 1910 - (AMASTRIDAE)
- defuncta, Cylichnella defuncta F.C. Baker & G.D. Hanna, 1927 - (CYLICHNIDAE)
- defuncta, Helix defuncta J.F. Mabille, 1883 - syn of: Idiomela subplicata (G.B. I Sowerby, 1825) - (HELICIDAE)
- defuniak, Cancellaria defuniak Gardner, 1947 † - (CANCELLARIIDAE) (FOSSIL)
- defuniak, Carditamera defuniak E.J. Gardner, 1947 † - (CARDITIDAE) (FOSSIL)
- defuniak, Ithycythara defuniak J. Gardner, 1937 † - (MANGELIIDAE) (FOSSIL)
- defuniak, Cypraeolina defuniak J. Gardner, 1937 † - (MARGINELLIDAE) (FOSSIL)
- defuniak, Nucula defuniak Gardner, 1926 † - (NUCULIDAE) (FOSSIL)
- defuniak, Pseudamussium defuniak Gardner, 1926 † - syn of: Cyclopecten defuniak J. Gardner, 1926 † - (PECTINIDAE) (FOSSIL)
- defuniak, Cyclopecten defuniak J. Gardner, 1926 † - (PROPEAMUSSIIDAE) (FOSSIL)
- degeeri, Allatheca degeeri (Holm, 1893 †) - (ALLATHECIDAE) (FOSSIL)
- degeeri, Myalina degeeri Lundgren, 1887 † - (MYALINIDAE) (FOSSIL)
- degeletense, Punctum degeletense J.T. Kuroda & M. Hukuda, 1944 - (PUNCTIDAE)
- degener, Columenoceras degener (Barrande, 1870 †) - (GEISONOCERATIDAE) (FOSSIL)
- degener, Aphanoconia verecunda degener (H.A. Pilsbry & Y. Hirase, 1904) - (HELICINIDAE)
- degener, Lechritrochoceras degener (Barrande, 1865 †) - (LECHRITROCHOCERATIDAE) (FOSSIL)
- degenera, Pinna degenera J.H.F. Link, 1807 - syn of: Pinna carnea J.F. Gmelin, 1791 - (PINNIDAE)
- degenerans, Alycaeus fultoni degenerans H.C. Fulton, 1901 - (CYCLOPHORIDAE)
- degenerans, Xeroleuca degenerans T. Kira, 1955 - (HYGROMIIDAE)
- degenerans validor, Xeroleuca degenerans validor (A. Mousson, 1874) - (HYGROMIIDAE)
- degenerata, Luchuphaedusa oshimae degenerata H.A. Pilsbry, 1905 - (CLAUSILIIDAE)
- degenerata, Leiostyla degenerata T.V. Wollaston, 1878 - (LAURIIDAE)
- degenerata, Melanopsis costata degenerata H.B. Preston, 1914 - (MELANOPSIDAE)
- degenerata, Scagacola degenerata J. Stanisic, 2010 - (RHYTIDIDAE)
- degeneratum, Cerithium degeneratum W.H. Dall, 1894 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (CERITHIIDAE)
- degeneratum, Cyathopoma taiwanicum degeneratum H.A. Pilsbry & Y. Hirase, 1905 - (CYCLOPHORIDAE)
- degeneratum, Opisthosiphon evanidum degeneratum C. de la Torre & J. Henderson, 1921 - (POMATIIDAE)
- degeneratum, Pyrazus degeneratum W.H. Dall, 1894 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (POTAMIDIDAE)
- degeneratus, Odontostomus degeneratus H.A. Pilsbry, 1899 - (ODONTOSTOMIDAE)
- degeneratus, Bilinguites degeneratus Ruzhencev & Bogoslovskaya, 1978 † - (RETICULOCERATIDAE) (FOSSIL)
- degeneri, Cerion degeneri W.J. Clench, 1948 - (CERIONIDAE)
- degeneri, Elysia degeneri J.M. Ostergaard, 1955 - (PLAKOBRANCHIDAE)
- degeneris, Macroptychia degeneris (H.B. Preston, 1911) - (CLAUSILIIDAE)
- degeneris, Nearctula degeneris (H.A. Pilsbry, 1927) - (VERTIGINIDAE)
- degenis, Strophiops degenis C.J. Maynard & W.F. Clapp, 1920 - (CERIONIDAE)
- degensis, Euspirocrommium degensis F. Sacco, 1890 † - (AMPULLINIDAE) (FOSSIL)
- degensis, Cryptoconus degensis (C. Mayer †) - (CONIDAE) (FOSSIL)
- degerbolae, Chersaecia degerbolae (G.A. Solem, 1966) - (PLECTOPYLIDAE)
- degerpolae, Plectopylis degerpolae G.A. Solem - (PLECTOPYLIDAE)
- degneri, Archachatina degneri J.C. Bequaert & W.J. Clench, 1936 - (ACHATINIDAE)
- Degneria, Subgenus Zonitarion (Degneria) B. Verdcourt, 1956 (UROCYCLIDAE)
- degorteri, Eupera degorteri (J.G.J. Kuiper, 1954) - (SPHAERIIDAE)
- degousei, Corbicula degousei J.R. Bourguignat, 1889 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- degraaffi, Pneumoderma degraaffi S. Van Der Spoel & T. Pafort-Van Iersel, 1982 - (PNEUMODERMATIDAE)
- degradatum, Katakosmokeras degradatum (Buckman) † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- degrangei, Barbatia degrangei A.E.M. Cossmann & M.A. Peyrot, 1912 - (ARCIDAE)
- degrangei, Cardium degrangei A.E.M. Cossmann, 1895 † - (CARDIIDAE) (FOSSIL)
- degrangei, Clavatula degrangei M.A. Peyrot, 1923 † - (CLAVATULIDAE) (FOSSIL)
- degrangei, Homalopoma degrangei A.E.M. Cossmann & M.A. Peyrot, 1917 † - (COLLONIIDAE) (FOSSIL)
- degrangei, Donax degrangei A.E.M. Cossmann & M.A. Peyrot, 1910 † - (DONACIDAE) (FOSSIL)
- degrangei, Pseudocirsope degrangei (A.E.M. Cossmann & M.A. Peyrot, 1919 †) - (ELACHISINIDAE) (FOSSIL)
- degrangei, Gadila degrangei A.E.M. Cossmann & M.A. Peyrot, 1917 † - (GADILIDAE) (FOSSIL)
- degrangei, Schuettemmericia degrangei D. Kadolsky, 1993 † - (HYDROBIIDAE) (FOSSIL)
- degrangei, Kellia degrangei A.E.M. Cossmann & M.A. Peyrot, 1911 † - syn of: Scacchia degrangei (A.E.M. Cossmann & M.A. Peyrot, 1911 †) - (KELLIIDAE) (FOSSIL)
- degrangei, Scacchia degrangei (A.E.M. Cossmann & M.A. Peyrot, 1911 †) - (LASAEIDAE) (FOSSIL)
- degrangei, Nassa degrangei (M.A. Peyrot, 1825 †) - (MURICIDAE) (FOSSIL)
- degrangei, Nassarius degrangei M.A. Peyrot, 1924 † - (NASSARIIDAE) (FOSSIL)
- degrangei, Cochlis degrangei A.E.M. Cossmann & M.A. Peyrot, 1921 † - (NATICIDAE) (FOSSIL)
- degrangei, Pandora degrangei A.E.M. Cossmann & M.A. Peyrot, 1909 † - (PANDORIDAE) (FOSSIL)
- degrangei, Patella degrangei A.E.M. Cossmann & M.A. Peyrot, 1916 † - (PATELLIDAE) (FOSSIL)
- degrangei, Ensis degrangei A.E.M. Cossmann & M.A. Peyrot, 1909 † - (PHARIDAE) (FOSSIL)
- degrangei, Escoffieria degrangei A.E.M. Cossmann & M.A. Peyrot, 1922 † - syn of: Tympanotonos tournoueri (C. Mayer, 1878 †) - (POTAMIDIDAE) (FOSSIL)
- degrangei, Chrysallida degrangei (A.E.M. Cossmann & M.A. Peyrot, 1917 †) - (PYRAMIDELLIDAE) (FOSSIL)
- degrangei, Daphnella degrangei (A.E.M. Cossmann, 1894 †) - (RAPHITOMIDAE) (FOSSIL)
- degrangei, Rissoina degrangei A.E.M. Cossmann & M.A. Peyrot, 1911 † - (RISSOINIDAE) (FOSSIL)
- degrangei, Scaliola degrangei A.E.M. Cossmann & M.A. Peyrot, 1919 † - (SCALIOLIDAE) (FOSSIL)
- degrangei, Abra degrangei (A.E.M. Cossmann, 1895 †) - (SEMELIDAE) (FOSSIL)
- degrangei, Sportella degrangei A.E.M. Cossmann & M.A. Peyrot, 1911 † - syn of: Scacchia degrangei (A.E.M. Cossmann & M.A. Peyrot, 1911 †) - (SPORTELLIDAE) (FOSSIL)
- degrangei, Terebra degrangei M.A. Peyrot, 1931 † - syn of: Terebra pseudopertusa M.A. Peyrot, 1931 † - (TEREBRIDAE) (FOSSIL)
- degrangei, Teinostoma degrangei A.E.M. Cossmann & M.A. Peyrot, 1921 † - (TORNIDAE) (FOSSIL)
- degrangei, Metaxia degrangei A.E.M. Cossmann & M.A. Peyrot, 1922 † - syn of: Metaxia merignacensis (A.E.M. Cossmann & M.A. Peyrot, 1922 †) - (TRIPHORIDAE) (FOSSIL)
- degrangei, Gibbula degrangei A.E.M. Cossmann & M.A. Peyrot, 1916 † - (TROCHIDAE) (FOSSIL)
- degrangei, Nystia degrangei A.E.M. Cossmann & M.A. Peyrot, 1918 † - (TRUNCATELLIDAE) (FOSSIL)
- degrangei, Andonia degrangei (A.E.M. Cossmann, 1895 †) - (TURRIDAE) (FOSSIL)
- degrangei, Lyria degrangei M.A. Peyrot, 1925 † - (VOLUTIDAE) (FOSSIL)
- Degrangia, Genus Degrangia Cossmann & Peyrot, 1909 † (MYIDA (UNASSIGNED)) (FOSSIL)
- degregorii, Ethminolia degregorii (G. Caramagna, 1888) - (TROCHIDAE)
- deguerryanus, Lanistes deguerryanus (J.R. Bourguignat, 1889) - (AMPULLARIIDAE)
- dehaanii, Pleurobranchus dehaanii F.J. Cantraine, 1840 - syn of: Pleurobranchus membranaceus (G. Montagu, 1815) - (PLEUROBRANCHIDAE)
- dehelensis, Conomurex fasciatus dehelensis Ostini & Rigoletti, 1983 - (STROMBIDAE)
- dehelmasi, Acrioceras dehelmasi Sarkar, 1955 † - (ANCYLOCERATIDAE) (FOSSIL)
- dehiscens, Limaria dehiscens T.A. Conrad, 1837 - syn of: Limaria hians (J.F. Gmelin, 1792) - (LIMIDAE)
- dehiscens, Unio dehiscens T. Say, 1829 - syn of: Hemistena lata C.S. Rafinesque, 1820 - (UNIONIDAE)
- dehiscens oriensopsis, Sayunio dehiscens oriensopsis A. De Gregorio, 1914 - syn of: Hemistena lata C.S. Rafinesque, 1820 - (UNIONIDAE)
- dehmi, Staliopsis dehmi (W.R. Schlickum, 1961 †) - (AMNICOLIDAE) (FOSSIL)
- dehmi, Architectonica dehmi Abbass, 1967 † - (ARCHITECTONICIDAE) (FOSSIL)
- dehmi, Gastrocopta dehmi Schlickum & Strauch, 1979 † - (GASTROCOPTIDAE) (FOSSIL)
- dehmi, Nystia dehmi W.R. Schlickum, 1978 † - (TRUNCATELLIDAE) (FOSSIL)
- dehmi, Viviparus dehmi W.R. Schlickum & F. Strauch, 1979 † - (VIVIPARIDAE) (FOSSIL)
- dehnei, Theba dehnei (E.A. Rossmässler, 1846) - (HELICIDAE)
- dehnei depressa, Theba dehnei depressa P.M. Pallary, 1921 - (HELICIDAE)
- dehnei major, Theba dehnei major P.M. Pallary, 1921 - (HELICIDAE)
- dehnei minor, Theba dehnei minor P.M. Pallary, 1921 - (HELICIDAE)
- dehnei rosea, Theba dehnei rosea P.M. Pallary, 1921 - (HELICIDAE)
- dehonesta, Anodonta dehonesta É.A.A. Locard, 1890 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- Deianira, Genus Deianira Stolickza, 1860 † (DEIANIRIDAE) (FOSSIL)
- DEIANIRIDAE Wenz, 1938 † - Family (GASTROPODA-NERITIMORPHA [Subclass]-CYCLONERITIMORPHA [Order]-HELICINOIDEA [Superfamily]) (FOSSIL)
- deichmannae, Lischkeia deichmannae F.M. Bayer, 1971 - (CALLIOTROPIDAE)
- deici, Theodoxus veljetinensis deici Miloševic, 1983 † - (NERITIDAE) (FOSSIL)
- deiecta, Lacunopsis deiecta P. Temcharoen, 1971 - (POMATIOPSIDAE)
- deificum, Epitonium deificum (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- deigryn, Myodakryotus deigryn Tunnicliff, 1987 † - (MYODAKRYOTIDAE) (FOSSIL)
- Deikea, syn of: Genus Mactra C. Linnaeus, 1767 (MACTRIDAE)
- Deikella, Genus Deikella Kiel & Bandel, 2004 † (TURBINIDAE) (FOSSIL)
- Deiloceras, Genus Deiloceras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- deilus, Longiphallus deilus (J.R. Bourguignat, 1857) - (OXYCHILIDAE)
- deilus, Zonites deilus J.R. Bourguignat, 1857 - syn of: Longiphallus deilus (J.R. Bourguignat, 1857) - (ZONITIDAE)
- deilus malinowskii, Longiphallus deilus malinowskii (L. Pfeiffer, 1865) - (OXYCHILIDAE)
- deilus rumelicus, Longiphallus deilus rumelicus (P. Hesse, 1913) - (OXYCHILIDAE)
- deimatis, Gasterosiphon deimatis (F. Koehler & C. Vaney, 1903) - (EULIMIDAE)
- Deinoceras, Genus Deinoceras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- deiodosa, Natica deiodosa L.A. Reeve, 1855 - syn of: Conuber incei (R.A. Philippi, 1853) - (NATICIDAE)
- deiopei, Prosolarium deiopei (Billings, 1865 †) - (LUCIELLIDAE) (FOSSIL)
- deiopei, Pleurotomaria deiopei Billings, 1865 † - syn of: Prosolarium deiopei (Billings, 1865 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- deiopeia, Trochomorpha deiopeia (G.F. Angas, 1869) - (TROCHOMORPHIDAE)
- Deiradoceras, Subgenus Mortoniceras (Deiradoceras) Kennedy & al., 1999 † (BRANCOCERATIDAE) (FOSSIL)
- Deiroceras, Genus Deiroceras Hyatt, 1884 † (ORMOCERATIDAE) (FOSSIL)
- dejacobi, Jujubinus dejacobi A. Aradas, 1841 - syn of: Jujubinus exasperatus (T. Pennant, 1777) - (TROCHIDAE)
- dejaeri, Gobraeus dejaeri (Vincent 1930) † - (PSAMMOBIIDAE) (FOSSIL)
- Dejanira, syn of: Genus Deianira Stolickza, 1860 † (DEIANIRIDAE) (FOSSIL)
- dejanira, Mangelia dejanira W.H. Dall, 1919 - (MANGELIIDAE)
- dejanira, Metaphos dejanira (W.H. Dall, 1919) - (NASSARIIDAE)
- dejeana, Laeocathaica dejeana (P.M. Heude, 1882) - (BRADYBAENIDAE)
- dejecta, Costaclymenia dejecta Pajchlowa, 1972 † - (COSTACLYMENIIDAE) (FOSSIL)
- dejecta, Drillia dejecta E.A. Smith, 1888 - (DRILLIIDAE)
- dejecta, Helix dejecta G.J. De Cristofori & G. Jan, 1832 - syn of: Helicopsis dejecta (G.J. De Cristofori & G. Jan, 1832) - (HELICIDAE)
- dejecta, Helicopsis dejecta (G.J. De Cristofori & G. Jan, 1832) - (HYGROMIIDAE)
- dejecta, Anodonta dejecta J. Lewis, 1875 - (UNIONIDAE)
- dejectus, Protoglyptus dejectus (H.C. Fulton, 1907) - (ORTHALICIDAE)
- dejectus, Streptaxis dejectus (S.A.A. Petit De La Saussaye, 1842) - (STREPTAXIDAE)
- dejongi, Alvania dejongi M.J. Faber & R.G. Moolenbeek, 2004 - (RISSOIDAE)
- dejongi, Spelaeodiscus dejongi E. Gittenberger, 1969 - (SPELAEODISCIDAE)
- dejugis, Zafra dejugis K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- dejurgini, Buccinum dejurgini P. Bartsch, 1929 - (BUCCINIDAE)
- dekagonum, Dentalium dekagonum A. von Koenen, 1892 † - (DENTALIIDAE) (FOSSIL)
- dekayi, Eutrephoceras dekayi (Morton, 1834 †) - (NAUTILIDAE) (FOSSIL)
- dekeyzeri, Austropyrgus dekeyzeri A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- Dekhania, syn of: Genus Mariaella J.E. Gray, 1855 (ARIOPHANTIDAE)
- dekkeri, Anadara dekkeri N.N. Thach, 2015 - (ARCIDAE)
- dekkeri, Nassarius dekkeri H.H. Kool, 2001 - (NASSARIIDAE)
- dekkeri, Parthenina dekkeri (J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000) - (PYRAMIDELLIDAE)
- dekkeri, Chrysallida dekkeri J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000 - syn of: Parthenina dekkeri (J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000) - (PYRAMIDELLIDAE)
- dekkeri, Trivirostra dekkeri D. Fehse & J. Grego, 2009 - (TRIVIIDAE)
- dekkersi, Protoelongata dekkersi (M. Herrmann, G. Stossier & R. Salisbury, 2014) - (COSTELLARIIDAE)
- dekleini, Odetta dekleini (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - (PYRAMIDELLIDAE)
- dekleini, Odostomia dekleini (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - syn of: Odetta dekleini (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - (PYRAMIDELLIDAE)
- dela, Baeolidia dela (Er. Marcus & Ev. Marcus, 1960) - (AEOLIDIIDAE)
- dela, Berghia dela Er. Marcus & Ev. Marcus, 1960 - syn of: Baeolidia dela (Er. Marcus & Ev. Marcus, 1960) - (AEOLIDIIDAE)
- delabechii, Penion delabechii (Lea, 1833 †) - (BUCCINIDAE) (FOSSIL)
- delabris, Helix delabris A. Mousson, 1863 - syn of: Caucasocressa joannis (L.L.G. de Mortillet, 1854) - (HELICIDAE)
- delacarlica, Cyrtodontula delacarlica Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- delacouriana, Eucithara delacouriana (J.C.H. Crosse, 1869) - (MANGELIIDAE)
- delacouriana, Cithara delacouriana J.C.H. Crosse, 1869 - syn of: Eucithara delacouriana (J.C.H. Crosse, 1869) - (MANGELIIDAE)
- delacouriana matakuana, Eucithara delacouriana matakuana (E.A. Smith, 1884) - (MANGELIIDAE)
- delacourti, Monacha delacourti J.F. Mabille in J.R. Bourguignat, 1873 - syn of: Eutheba cantiana (G. Montagu, 1803) - (HYGROMIIDAE)
- delafossei, Rinetrigonia delafossei (C.É. Bayle & Coquand, 1851 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- delafossei, Charonia delafossei (M. Rouault, 1849) - (RANELLIDAE)
- delagei, Murchisonia delagei E.C. Munier-Chalmas, 1876 † - (MURCHISONIIDAE) (FOSSIL)
- delagoae, Paphies delagoae (K.H. Barnard, 1964) - (MESODESMATIDAE)
- delagoaensis, Ischnochiton delagoaensis E.A. Ashby, 1931 - syn of: Ischnochiton yerburyi (E.A. Smith, 1891) - (ISCHNOCHITONIDAE)
- delagoense, Cheloniceras delagoense Krenkel, 1912 † - (DOUVILLEICERATIDAE) (FOSSIL)
- delalandii, Burnupena delalandii L.C. Kiener, 1834 - syn of: Burnupena catarrhacta (J.F. Gmelin, 1791) - (BUCCINIDAE)
- delamarrei, Anachis delamarrei E. Rolán & F. Boyer, 2006 - (COLUMBELLIDAE)
- delamarrei, Muricopsis delamarrei R. Houart, 2005 - syn of: Muricopsis delemarrei R. Houart, 2005 - (MURICIDAE)
- delaminata, Helix delaminata C.B. Adams, 1851 - syn of: Hyalosagda simplex (H.A. Pilsbry & A.P. Brown, 1910) - (HELICIDAE)
- delaminata, Sagda delaminata (C.B. Adams, 1851) - (SAGDIDAE)
- delandensis, Arca delandensis W.C. Mansfield, 1939 † - (ARCIDAE) (FOSSIL)
- delannoyei, Astyris delannoyei J. Pelorce, 2013 - (COLUMBELLIDAE)
- delannoyei, Bathyferula delannoyei P. Stahlschmidt, D. Lamy & K. Fraussen, 2012 - (TURRIDAE)
- delanoui, Tropidodiscus delanoui Oehlert & Oehlert, 1888 † - (TROPIDODISCIDAE) (FOSSIL)
- delanoyae, Africonus delanoyae (H. Trovão, 1979) - (CONIDAE)
- delanoyae fiadeiroi, Africonus delanoyae fiadeiroi M.J. Tenorio, C.M.L. Afonso, C.M. Cunha & E. Rolán, 2014 - syn of: Africonus fiadeiroi M.J. Tenorio, C.M.L. Afonso & al., 2014 - (CONIDAE)
- delanoyi, Conus delanoyi H. Trovão, 1979 - syn of: Africonus delanoyae (H. Trovão, 1979) - (CONIDAE)
- delanoyi, Triplaniceras delanoyi J.J. Bert, 2008 † - (HAMITIDAE) (FOSSIL)
- delaportei, Sitala delaportei E. Fischer-Piette, F. Blanc & F. Salvat, 1975 - (ARIOPHANTIDAE)
- delaportei, Hyriopsis delaportei (J.C.H. Crosse & P.H. Fischer, 1876) - (UNIONIDAE)
- delarrochae, Gibberula delarrochae J.A. Ortea, 2015 - (CYSTISCIDAE)
- delaruei, Dipoloceroides delaruei (A.V.M.D. D'Orbigny, 1841 †) - (BRANCOCERATIDAE) (FOSSIL)
- delata, Oliva delata P.O. Jung, 1971 † - (OLIVIDAE) (FOSSIL)
- delatouri, Diplomorpha delatouri W.D. Hartman, 1886 - (ORTHALICIDAE)
- delatreanum, Chondropoma delatreanum (A.V.M.D. D'Orbigny, 1841) - (POMATIIDAE)
- delatreanum bonacheum, Chondropoma delatreanum bonacheum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- delatreanum santafeum, Chondropoma delatreanum santafeum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- delatriana, Annularia delatriana D'Orbigny, 1841 - syn of: Chondropoma delatreanum (A.V.M.D. D'Orbigny, 1841) - (POMATIIDAE)
- delattrei, Ampullaria delattrei P.H. Fischer & J.C.H. Crosse, 1890 - syn of: Pomacea lattrei (L.A. Reeve, 1856) - (AMPULLARIIDAE)
- delattrei, Otostomus delattrei L. Pfeiffer, 1846 - syn of: Drymaeus lattrei (L. Pfeiffer, 1846) - (BULIMULIDAE)
- delattrei, Streptostyla delattrei (L. Pfeiffer, 1846) - (SPIRAXIDAE)
- delaunayi, Lima delaunayi A.E.M. Cossmann, 1907 - (LIMIDAE)
- delaunayi, Lucina delaunayi A.E.M. Cossmann, 1900 - (LUCINIDAE)
- delaunayi, Trochus delaunayi A.E.M. Cossmann, 1907 - (TROCHIDAE)
- delaunayi, Cincinna delaunayi A.E.M. Cossmann, 1907 - (VALVATIDAE)
- Delavaya, Genus Delavaya P.M. Heude, 1889 (POMATIOPSIDAE)
- delavayana, Paraformosana delavayana (P.M. Heude, 1885) - (CLAUSILIIDAE)
- delavayana, Corbicula delavayana P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- delavayana, Sulcospira delavayana (P.M. Heude, 1888) - (PACHYCHILIDAE)
- delavayana, Sinotaia delavayana (P.M. Heude, 1890) - (VIVIPARIDAE)
- delavayi, Vivipara delavayi J.F. Mabille, 1886 - syn of: Margarya melanioides G. Nevill, 1877 - (VIVIPARIDAE)
- delawareanus, Marathonites delawareanus Plummer & P.H. Scott, 1937 † - syn of: Veruzhites pamiricus Leonova, 1988 † - (ADRIANITIDAE) (FOSSIL)
- Delawarella, Subgenus Menabites (Delawarella) de Grossouvre, 1894 † (COLLIGNONICERATIDAE) (FOSSIL)
- delawarensis, Aviculopecten delawarensis Girty, 1909 † - syn of: Acanthopecten delawarensis (Girty, 1909 †) - (AVICULOPECTINIDAE) (FOSSIL)
- delawarensis, Delawarella delawarensis (Morton, 1830 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- delawarensis, Baylea delawarensis (Girty, 1909 †) - (GOSSELETINIDAE) (FOSSIL)
- delawarensis, Myoconcha delawarensis Girty, 1909 † - (KALENTERIDAE) (FOSSIL)
- delawarensis, Acanthopecten delawarensis (Girty, 1909 †) - (LIMIPECTINIDAE) (FOSSIL)
- delawarensis, Nuculites delawarensis Girty 1909 † - (MALLETIIDAE) (FOSSIL)
- delawarensis, Dhondtichlamys delawarensis (H.G. Richards & A. Harbison, 1944 †) - (PECTINIDAE) (FOSSIL)
- delawarensis, Pleurotomaria delawarensis Girty, 1909 † - syn of: Baylea delawarensis (Girty, 1909 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- delawarensis, Strobeus delawarensis Girty, 1909 † - (SOLENISCIDAE) (FOSSIL)
- delbosi, Gourmya delbosi (O.G. Michelotti, 1861 †) - (CERITHIIDAE) (FOSSIL)
- delbosiana, Pteropurpura delbosiana (J.P.S. Grateloup, 1848 †) - (MURICIDAE) (FOSSIL)
- delbosianus, Murex delbosianus J.P.S. Grateloup, 1848 † - (MURICIDAE) (FOSSIL)
- delbosii, Natica delbosii Hébert, 1849 † - syn of: Crommium angustatum (J.P.S. Grateloup, 1828 †) - (NATICIDAE) (FOSSIL)
- Delclosia, Genus Delclosia Rabada, 1993 † (HAMINOEIDAE) (FOSSIL)
- delecatule, Promantellum delecatule T. Iredale, 1939 - syn of: Limaria orientalis (A. Adams & L.A. Reeve, 1850) - (LIMIDAE)
- delecta, Unitas delecta (G.P. Deshayes, 1864 †) - (CANCELLARIIDAE) (FOSSIL)
- delecta, Collonista delecta (E.A. Smith, 1899) - (COLLONIIDAE)
- delecta, Leptothyra delecta E.A. Smith, 1899 - syn of: Collonista delecta (E.A. Smith, 1899) - (COLLONIIDAE)
- delecta, Helicarion delecta T. Iredale, 1944 - (HELICARIONIDAE)
- delecta, Nebularia delecta (E.A. Smith, 1899) - syn of: Mitra coronata J.B.P.A. Lamarck, 1811 - (MITRIDAE)
- delecta, Martesia delecta G.P. Deshayes, 1856 † - (PHOLADIDAE) (FOSSIL)
- delecta, Daedalochila delecta L.R. Hubricht, 1976 - (POLYGYRIDAE)
- delecta, Sassia delecta B.C. Cotton, 1945 - syn of: Sassia subdistorta (J.B.P.A. Lamarck, 1822) - (RANELLIDAE)
- delecta, Ringicula delecta R. Murdoch & H.H. Suter, 1906 - (RINGICULIDAE)
- delecta, Onoba delecta W.F. Ponder, 1983 - (RISSOIDAE)
- delecta, Xenophora delecta R.J.L. Guppy, 1876 † - (XENOPHORIDAE) (FOSSIL)
- delectabile, Acrosterigma delectabile (P.A. Maxwell, 1978 †) - (CARDIIDAE) (FOSSIL)
- delectabile, Euciroa delectabile R.K. Dell, 1956 - syn of: Euciroa galatheae (R.K. Dell, 1956) - (EUCIROIDAE)
- delectabile, Circulus delectabile (R. Tate, 1899) - (TORNIDAE)
- delectabilis, Pseudotorinia delectabilis (J.C. Melvill, 1893) - (ARCHITECTONICIDAE)
- delectabilis, Aegista delectabilis (P. Ehrmann, 1900) - (BRADYBAENIDAE)
- delectabilis, Kaliella delectabilis E.R. Sykes, 1898 - (CHRONIDAE)
- delectabilis, Nicida delectabilis (H.B. Preston, 1905) - (DIPLOMMATINIDAE)
- delectabilis, Parthenina delectabilis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- delectabilis, Acrocoptis delectabilis (H.A. Pilsbry, 1929) - (UROCOPTIDAE)
- delectabilis, Acanthinula delectabilis G. Montagu, 1803 - syn of: Acanthinula aculeata (O.F. Müller, 1774) - (VALLONIIDAE)
- delectans, Aphetoceras delectans Teichert & Glenister † - (ESTONIOCERATIDAE) (FOSSIL)
- Delecticeras, Genus Delecticeras Arkell, 1951 † (CLYDONICERATIDAE) (FOSSIL)
- Delectopecten, Genus Delectopecten C.C. Stewart, 1930 (PECTINIDAE)
- delectum, Morum delectum T.A. Garrard, 1961 - syn of: Morum bruuni (A.W.B. Powell, 1958) - (HARPIDAE)
- delectum, Cerithidea delectum L.A. Reeve, 1864 - syn of: Cerithidea valida Adams, 1852 - (POTAMIDIDAE)
- delectus, Clypeosectus delectus McLean, 1989 - (LEPETODRILIDAE)
- deleeni, Gymnotoceras deleeni McLearn, 1946 † - syn of: Eogymnotoceras deleeni (McLearn, 1946 †) - (BEYRICHITIDAE) (FOSSIL)
- deleeni, Beyrichites deleeni McLearn, 1946 † - syn of: Eogymnotoceras deleeni (McLearn, 1946 †) - (BEYRICHITIDAE) (FOSSIL)
- deleeni, Eogymnotoceras deleeni (McLearn, 1946 †) - (CERATITIDAE) (FOSSIL)
- deleeni, Wasatchites deleeni McLearn, 1945 † - (PRIONITIDAE) (FOSSIL)
- deleeuwi, Viviparus deleeuwi T.A. Neubauer, M. Harzhauser, E. Georgopoulou, O. Mandic & A. Kroh, - (VIVIPARIDAE) (FOSSIL)
- delemarrei, Anachis delemarrei E. Rolán & F. Boyer, 2006 - syn of: Anachis delamarrei E. Rolán & F. Boyer, 2006 - (COLUMBELLIDAE)
- delemarrei, Muricopsis delemarrei R. Houart, 2005 - (MURICIDAE)
- delendus, Napaeus delendus J.F. Mabille, 1883 - syn of: Napaeinus tabidus (R.J. Shuttleworth, 1852) - (ENIDAE)
- delenita, Ovalina delenita A. Peñas & E. Rolán, 2017 - (PYRAMIDELLIDAE)
- delepida, Barbatia delepida W.P. Woodring, 1925 - (ARCIDAE)
- delepinei, Proshumardites delepinei (Schindewolf, 1939 †) - (AGATHICERATIDAE) (FOSSIL)
- delepinei, Sudeticeras delepinei Moore, 1950 † - (ANTHRACOCERATIDAE) (FOSSIL)
- delepinei, Polonoceras delepinei J.D. Petersen, 1975 † - (TORNOCERATIDAE) (FOSSIL)
- delepinei, Gundolficeras delepinei (Petter, 1959 †) - (TORNOCERATIDAE) (FOSSIL)
- delépinei, Polonoceras delépinei J.D. Petersen, 1975 † - syn of: Polonoceras delepinei J.D. Petersen, 1975 † - (TORNOCERATIDAE) (FOSSIL)
- Delepinoceras, Genus Delepinoceras Miller & Furnish, 1954 † (DELEPINOCERATIDAE) (FOSSIL)
- DELEPINOCERATIDAE Ruzhencev, 1957 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-GONIATITOIDEA [Superfamily]) (FOSSIL)
- delessei, Ancyloceras delessei Reynes, 1876 † - syn of: Crioceratites delessei (Reynes, 1876 †) - (ANCYLOCERATIDAE) (FOSSIL)
- delessei, Crioceratites delessei (Reynes, 1876 †) - (CRIOCERATITIDAE) (FOSSIL)
- delessei, Melanopsis delessei J.R. Tournouër, 1875 † - (MELANOPSIDAE) (FOSSIL)
- delesserti, Cristataria delesserti (J.R. Bourguignat, 1853) - (CLAUSILIIDAE)
- delesserti, Nacella delesserti (R.A. Philippi, 1849) - (NACELLIDAE)
- delesserti, Nacella delesserti C. Hedley, 1916 - syn of: Nacella macquariensis (H.J. Finlay, 1926) - (NACELLIDAE)
- delesserti, Sinum delesserti (C.A. Récluz in J.C. Chenu, 1843) - (NATICIDAE)
- delesserti, Solen delesserti G.B. Sowerby, 1874 - (SOLENIDAE)
- delesserti, Poiretia delesserti (J.R. Bourguignat, 1852) - (SPIRAXIDAE)
- Delessertia, syn of: Genus Cristataria W. von Vest, 1867 (CLAUSILIIDAE)
- delessertiana, Corbicula delessertiana T. Prime, 1870 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- delessertiana, Helix delessertiana E.J. Le Guillou, 1842 - (HELICIDAE)
- delessertiana, Hydroginella delessertiana (C.A. Récluz, 1841) - (MARGINELLIDAE)
- delessertiana, Volvarina delessertiana H.C. Weinkauff, 1879 - syn of: Volvarina albolineata (A.V.M.D. D'Orbigny, 1842) - (MARGINELLIDAE)
- delessertiana, Stramonita delessertiana d'Orbigny, 1841 - (MURICIDAE)
- delessertiana, Neverita delessertiana (C.A. Récluz, 1843) - (NATICIDAE)
- delessertiana, Indolyria delessertiana (S.A.A. Petit De La Saussaye, 1842) - (VOLUTIDAE)
- delessertiana patriceae, Neverita delessertiana patriceae E.J. Petuch & R.F. Myers, 2014 - syn of: Neverita delessertiana (C.A. Récluz, 1843) - (NATICIDAE)
- delessertianum, Penicillus delessertianum J.C. Chenu, 1842 - syn of: Brechites attrahens (J. Lightfoot, 1786) - (PENICILLIDAE)
- delessertii, Chama delessertii J.C. Chenu, 1846 - syn of: Chama pacifica W.J. Broderip, 1835 - (CHAMIDAE)
- delessertii, Conasprella delessertii (C.A. Récluz, 1843) - (CONIDAE)
- delessertii, Kohniconus delessertii C.A. Récluz, 1843 - syn of: Conasprella delessertii (C.A. Récluz, 1843) - (CONIDAE)
- delessertii, Profischeria delessertii (A.C. Bernardi, 1860) - (DONACIDAE)
- delessertii, Iphigenia delessertii A.C. Bernardi, 1860 - syn of: Profischeria delessertii (A.C. Bernardi, 1860) - (DONACIDAE)
- delessertii, Axinactis delessertii (L.A. Reeve, 1843) - (GLYCYMERIDIDAE)
- delessertii, Latiaxis delessertii G.W. Tryon, 1880 - syn of: Latiaxis mawae (J.E. Gray in E. Griffith & E. Pidgeon, 1834) - (MURICIDAE)
- delessertii, Neritina delessertii (R.E. Petit) - (NERITIDAE)
- delessertii, Spondylus delessertii J.C. Chenu, 1844 - syn of: Spondylus varius G.B. I Sowerby, 1827 - (SPONDYLIDAE)
- delessertii, Tivela delessertii (G.B. II Sowerby, 1854) - (VENERIDAE)
- deleta, Archinacella deleta (Sardeson, 1892 †) - (ARCHINACELLIDAE) (FOSSIL)
- deleta, Oamaruia deleta H.J. Finlay, 1930 † - (CANCELLARIIDAE) (FOSSIL)
- deleta, Carditopsis deleta (von Koenen 1893) † - (CONDYLOCARDIIDAE) (FOSSIL)
- deleta, Holopella deleta J. Perner, 1903 † - (LOXONEMATIDAE) (FOSSIL)
- deleta, Nebularia deleta P. Dautzenberg & J.L. Bouge, 1923 - syn of: Mitra coronata J.B.P.A. Lamarck, 1811 - (MITRIDAE)
- deleta, Rissoina deleta C.F. Laseron, 1956 - syn of: Rissoina fasciata A. Adams, 1851 - (RISSOINIDAE)
- deleta, Venus deleta G.P. Deshayes, 1857 † - (VENERIDAE) (FOSSIL)
- deletangi, Naesiotus deletangi J.J. Parodíz, 1946 - (BULIMULIDAE)
- Deletopecten, syn of: Genus Delectopecten C.C. Stewart, 1930 (PECTINIDAE)
- deletron, Octopoteuthis deletron A.T. Young, 1972 - (OCTOPOTEUTHIDAE)
- deletron, Hebetancylus deletron A.T. Young, 1972 - (PLANORBIDAE)
- delettrei, Gyrostrea delettrei (Coquand, 1862. †) - (GRYPHAEIDAE) (FOSSIL)
- delettrei, Plagiostoma delettrei Coquand, 1852 † - (LIMIDAE) (FOSSIL)
- deletum, Ludwigia deletum Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- deletum, Angulaticeras deletum (Canavari, 1882 †) - (SCHLOTHEIMIIDAE) (FOSSIL)
- deletus, Mesembrinus droueti deletus G.A. Solem, 1955 - (BULIMULIDAE)
- delevae, Belgrandiella delevae D.G. Georgiev & P. Glöer, 2015 - (HYDROBIIDAE)
- Delevieleusia, Subgenus Metalimax (Delevieleusia) P. Hagenmüller, 1855 (AGRIOLIMACIDAE)
- delgada, Cacodaphnella delgada H.A. Pilsbry & H.N. Lowe, 1932 - (MANGELIIDAE)
- delgada, Meekospira delgada B.S. Kues & Batten, 2001 † - (MEEKOSPIRIDAE) (FOSSIL)
- delgada, Sheldonella delgada (H.N. Lowe, 1935) - (NOETIIDAE)
- delgada, Gulella delgada I.V. Muratov, 2010 - (STREPTAXIDAE)
- delgadensis, Gibbula delgadensis F. Nordsieck, 1982 - (TROCHIDAE)
- delgadoi, Acteonella delgadoi Choffat, 1901 † - (ACTEONELLIDAE) (FOSSIL)
- Delia, Genus Delia Loriol, 1891 † (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- delia, Stenoloron delia (Billings, 1874 †) - (GOSSELETINIDAE) (FOSSIL)
- delia, Hyolithes delia Walcott, 1905 † - (HYOLITHIDAE) (FOSSIL)
- delia, Turbonilla delia J.C. Melvill, 1906 - (PYRAMIDELLIDAE)
- delibata, Bayania hordacea delibata (G.P. Deshayes, 1862 †) - (THIARIDAE) (FOSSIL)
- deliberatus, Gyrineum deliberatus T. Iredale, 1936 - syn of: Gyrineum lacunatum (J.W. Mighels, 1845) - (RANELLIDAE)
- delibrata, Chloritis delibrata (W.H. Benson, 1836) - (CAMAENIDAE)
- delibuta, Streptostyla delibuta (P.M.A. Morelet, 1851) - (SPIRAXIDAE)
- delibutus, Napaeus delibutus P.M.A. Morelet & H. Drouët, 1857 - (ENIDAE)
- delicata, Amastra delicata C.M. Cooke, 1933 - (AMASTRIDAE)
- delicata, Clivipollia delicata Fraussen & Stahlschmidt, 2016 - (BUCCINIDAE)
- delicata, Pollia delicata (E.A. Smith, 1899) - (BUCCINIDAE)
- delicata, Jacksonena delicata (C. Hedley, 1912) - (CAMAENIDAE)
- delicata, Torellia delicata (R.A. Philippi, 1844) - (CAPULIDAE)
- delicata, Strophiops delicata C.J. Maynard, 1913 - (CERIONIDAE)
- delicata, Tyrinna delicata (F.D. Abraham, 1877) - (CHROMODORIDIDAE)
- delicata, Bequaertinenia delicata E. Neubert & H. Nordsieck, 2005 - (CLAUSILIIDAE)
- delicata, Bathyptychia beresowskii delicata H. Nordsieck, 2003 - (CLAUSILIIDAE)
- delicata, Mitrella delicata (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- delicata, Cyanocyclas delicata W.B. Marshall, 1924 - syn of: Corbicula limosa (W.G. Maton, 1809) - (CYRENIDAE)
- delicata, Diplommatina delicata H.H. Godwin-Austen, 1892 - (DIPLOMMATINIDAE)
- delicata, Doris delicata F.D. Abraham, 1877 - syn of: Tyrinna delicata (F.D. Abraham, 1877) - (DORIDIDAE)
- delicata, Wanwanella trigonalis delicata T. Kobayashi, 1933 † - (EOPTERIIDAE) (FOSSIL)
- delicata, Gyroscala delicata T.A. de M. Monterosato, 1874 - syn of: Turbonilla delicata (T.A. de M. Monterosato, 1874) - (EPITONIIDAE)
- delicata, Hemiliostraca delicata (H.A. Pilsbry, 1918) - (EULIMIDAE)
- delicata, Poleumita delicata J. Perner, 1903 † - syn of: Oriostoma delicata (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- delicata, Benimakia delicata G.J. Vermeij & M.A. Snyder, 2003 - (FASCIOLARIIDAE)
- delicata, Diodora delicata (E.A. Smith, 1899) - (FISSURELLIDAE)
- delicata, Lucapinella delicata G.W. Nowell-Usticke, 1969 - (FISSURELLIDAE)
- delicata, Diodora delicata I. Pérez Farfante & F.C. Henríquez, 1946 - syn of: Diodora fragilis I. Pérez Farfante & F.C. Henríquez, 1946 - (FISSURELLIDAE)
- delicata, Flabellina delicata T.M. Gosliner & R.C. Willan, 1991 - (FLABELLINIDAE)
- delicata, Meiocardia delicata S. Kosuge & Kage, 1994 - syn of: Meiocardia vulgaris (L.A. Reeve, 1845) - (GLOSSIDAE)
- delicata, Peruvispira delicata Chronic, 1949 † - (GOSSELETINIDAE) (FOSSIL)
- delicata, Graphoceras delicata Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- delicata, Harpa delicata G. Perry, 1811 - syn of: Harpa articularis J.B.P.A. Lamarck, 1822 - (HARPIDAE)
- delicata, Theba delicata T.A. de M. Monterosato - syn of: Theba pisana (O.F. Müller, 1774) - (HELICIDAE)
- delicata, Sonorella delicata H.A. Pilsbry & J.H. Ferriss, 1919 - (HELMINTHOGLYPTIDAE)
- delicata, Iravadia delicata (R.A. Philippi, 1849) - (IRAVADIIDAE)
- delicata, Pseudonoba delicata R.A. Philippi, 1849 - syn of: Iravadia delicata (R.A. Philippi, 1849) - (IRAVADIIDAE)
- delicata, Janthina delicata R.A. Philippi, 1844 - syn of: Torellia delicata (R.A. Philippi, 1844) - (JANTHINIDAE)
- delicata, Laubella delicata (Laube, 1868 †) - (LAUBELLIDAE) (FOSSIL)
- delicata, Platyworthenia delicata Chronic, 1952 † - (LOPHOSPIRIDAE) (FOSSIL)
- delicata, Lophospira delicata Tofel & Bretsky, 1987 † - syn of: Eunema centralis Ulrich & Scofield, 1897 † - (LOPHOSPIRIDAE) (FOSSIL)
- delicata, Curtitoma delicata (T.A. Okutani, 1964) - (MANGELIIDAE)
- delicata, Girtyspira delicata Pan & Erwin, 2002 † - (MEEKOSPIRIDAE) (FOSSIL)
- delicata, Melanopsis delicata P.M. Pallary, 1920 † - syn of: Melanopsis bouei sturii A. Fuchs, 1873 † - (MELANOPSIDAE) (FOSSIL)
- delicata, Mitra delicata A. Adams, 1853 - syn of: Vexillum delicatum (A. Adams, 1853) - (MITRIDAE)
- delicata, Mesocoelia delicata J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- delicata, Ecphora delicata E.J. Petuch, 1988 † - (MURICIDAE) (FOSSIL)
- delicata, Planecphora delicata E.J. Petuch, 1988 † - syn of: Ecphora delicata E.J. Petuch, 1988 † - (MURICIDAE) (FOSSIL)
- delicata, Myadora royana delicata A.A. Gould, 1861 - (MYOCHAMIDAE)
- delicata, Trigonellina delicata (Parnes, 1981) † - (MYOPHORELLIDAE) (FOSSIL)
- delicata, Nassa delicata L.A. Reeve, 1854 - syn of: Tritia incrassata (H. Strøm, 1768) - (NASSARIIDAE)
- delicata, Oriostoma delicata (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- delicata, Peltospira delicata J.H. McLean, 1989 - (PELTOSPIRIDAE)
- delicata, Rugulina delicata R.A. Philippi, 1844 - syn of: Torellia delicata (R.A. Philippi, 1844) - (PENDROMIDAE)
- delicata, Persicitheca delicata Y.H. Duan, 1984 † - (PERSICITHECIDAE) (FOSSIL)
- delicata, Cratis delicata W. Bergmans, 1970 - (PHILOBRYIDAE)
- delicata, Platyostoma delicata (Talent & Philip, 1956 †) - (PLATYCERATIDAE) (FOSSIL)
- delicata, Ostlerina delicata Talent & Philip, 1956 † - syn of: Platyostoma delicata (Talent & Philip, 1956 †) - (PLATYCERATIDAE) (FOSSIL)
- delicata, Berthellina delicata (W.H. Pease, 1861) - (PLEUROBRANCHIDAE)
- delicata, Pegmavalvula delicata Newell & Boyd, 1970 † - (PSEUDOMONOTIDAE) (FOSSIL)
- delicata, Plocezyga delicata Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- delicata, Turbonilla delicata (T.A. de M. Monterosato, 1874) - (PYRAMIDELLIDAE)
- delicata, Rissopsetia delicata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- delicata, Daphnella delicata L.A. Reeve, 1846 - syn of: Daphnella flammea (R.B. Hinds, 1843) - (RAPHITOMIDAE)
- delicata, Onoba delicata R.A. Philippi, 1849 - syn of: Iravadia delicata (R.A. Philippi, 1849) - (RISSOIDAE)
- delicata, Solariella delicata W.H. Dall, 1919 - (SOLARIELLIDAE)
- delicata, Proameria delicata (H.A. Pilsbry, 1903) - (SPIRAXIDAE)
- delicata, Parvedentulina delicata K.C. Emberton, 2002 - (STREPTAXIDAE)
- delicata, Succinea delicata C.M.F. Ancey, 1889 - (SUCCINEIDAE)
- delicata, Cristalloella delicata K. Bandel, 1995 † - (TOFANELLIDAE) (FOSSIL)
- delicata, Strobiligera delicata A. Pimenta & M.R. Fernandes, 2014 - (TRIPHORIDAE)
- delicata, Gibbula delicata J.G. Jeffreys, 1883 - (TROCHIDAE)
- delicata, Gibbula leucophaea delicata G.S. Coen, 1937 - (TROCHIDAE)
- delicata, Guildfordia yoka delicata T. Habe & T.A. Okutani, 1983 - (TURBINIDAE)
- delicata, Pleurotoma delicata L.A. Reeve, 1846 - syn of: Daphnella flammea (R.B. Hinds, 1843) - (TURRIDAE)
- delicata, Vanikoro delicata (W.H. Pease, 1868) - (VANIKORIDAE)
- delicata, Saotomea delicata (H.C. Fulton, 1940) - (VOLUTIDAE)
- delicata acutissima, Turbonilla delicata acutissima T.A. de M. Monterosato, 1884 - syn of: Turbonilla acutissima T.A. de M. Monterosato, 1884 - (PYRAMIDELLIDAE)
- delicata expansa, Trachysma delicata expansa G.O. Sars, 1878 - syn of: Torellia delicata (R.A. Philippi, 1844) - (PENDROMIDAE)
- delicatae, Proctonotus delicatae A. Caruana Gatto, 1867 - (PROCTONOTIDAE)
- delicatecostatus, Olcostephanus delicatecostatus F. Haas, 1960 † - (OLCOSTEPHANIDAE) (FOSSIL)
- Delicatiscala, syn of: Subgenus Epitonium (Hyaloscala) De Boury, 1909 (EPITONIIDAE)
- delicatissima, Fasciolaria delicatissima García, Lyons & Snyder, 2016 - (FASCIOLARIIDAE)
- delicatissima, Nacella delicatissima H. Strebel, 1907 - (NACELLIDAE)
- delicatissima, Rissoina delicatissima B.K. Raines, 2002 - (RISSOINIDAE)
- delicatissima, Dosinia delicatissima J. Brown & H.A. Pilsbry, 1913 † - (VENERIDAE) (FOSSIL)
- Delicatoplax, syn of: Genus Chiton C. Linnaeus, 1758 (CHITONIDAE)
- delicatula, Acteocina delicatula A. Adams, 1862 - (ACTEOCINIDAE)
- delicatula, Scapharca delicatula T.L. Casey, 1903 † - (ARCIDAE) (FOSSIL)
- delicatula, Paludinella delicatula W.S.S. Van Benthem-Jutting, 1958 - (ASSIMINEIDAE)
- delicatula, Filodrillia delicatula C.F. Laseron, 1954 - (BORSONIIDAE)
- delicatula, Grandostoma delicatula J. Perner, 1903 † - syn of: Grandostoma bohemica (J. Perner, 1903 †) - (BUCANIIDAE) (FOSSIL)
- delicatula, Pisania delicatula G.B. III Sowerby, 1901 - syn of: Pisania fasciculata (L.A. Reeve, 1846) - (BUCCINIDAE)
- delicatula, Bathybembix delicatula R.K. Dell, 1990 - (CALLIOTROPIDAE)
- delicatula, Nothoadmete delicatula (E.A. Smith, 1907) - (CANCELLARIIDAE)
- delicatula, Cardita delicatula R. Tate, 1886 † - (CARDITIDAE) (FOSSIL)
- delicatula, Paracharopa delicatula F.M. Climo, 1983 - (CHAROPIDAE)
- delicatula, Latiromitra delicatula (T. Shikama, 1971) - (COSTELLARIIDAE)
- delicatula, Ctenodonta delicatula Harper † - (CTENODONTIDAE) (FOSSIL)
- delicatula, Pyramidelloides delicatula C.F. Laseron, 1956 - syn of: Pyramidelloides gracilis (A. Garrett, 1873) - (EULIMIDAE)
- delicatula, Lucapinella delicatula G.W. Nowell-Usticke, 1969 - syn of: Lucapinella delicata G.W. Nowell-Usticke, 1969 - (FISSURELLIDAE)
- delicatula, Tristramia delicatula (R.J. Shuttleworth, 1852) - (HELICINIDAE)
- delicatula, Limaria delicatula T. Iredale, 1939 - syn of: Limaria orientalis (A. Adams & L.A. Reeve, 1850) - (LIMIDAE)
- delicatula, Munditia delicatula A.W.B. Powell, 1940 - (LIOTIIDAE)
- delicatula, Littoraria delicatula (G. Nevill, 1885) - (LITTORINIDAE)
- delicatula, Loxonema delicatula Wilson, 1938 † - (LOXONEMATIDAE) (FOSSIL)
- delicatula, Ctena delicatula (H.A. Pilsbry, 1904) - (LUCINIDAE)
- delicatula, Mactra delicatula H.B. Preston, 1904 - syn of: Mactra cuneata J.F. Gmelin, 1791 - (MACTRIDAE)
- delicatula, Apitua delicatula C.F. Laseron, 1954 - (MANGELIIDAE)
- delicatula, Mangelia delicatula J.E. Tenison-Woods, 1879 - syn of: Guraleus delicatulus (J.E. Tenison-Woods, 1879) - (MANGELIIDAE)
- delicatula, Bela nebula delicatula F.W. Harmer † - (MANGELIIDAE) (FOSSIL)
- delicatula, Crenella delicatula M. Yokoyama, 1926 - syn of: Crenella decussata (G. Montagu, 1808) - (MYTILIDAE)
- delicatula, Kerguelenatica delicatula (E.A. Smith, 1902) - (NATICIDAE)
- delicatula, Falsilunatia delicatula E.A. Smith, 1902 - syn of: Kerguelenatica delicatula (E.A. Smith, 1902) - (NATICIDAE)
- delicatula, Natica delicatula E.A. Smith, 1902 - syn of: Kerguelenatica delicatula (E.A. Smith, 1902) - (NATICIDAE)
- delicatula, Neilonella delicatula B. Prashad, 1932 - (NEILONELLIDAE)
- delicatula, Oxynoe delicatula G. Nevill & H. Nevill, 1869 - (OXYNOIDAE)
- delicatula, Patella delicatula G.P. Deshayes, 1864 † - syn of: Patella scutatella J.B.P.A. Lamarck, 1802 † - (PATELLIDAE) (FOSSIL)
- delicatula, Zygochlamys delicatula (F.W. Hutton, 1873) - (PECTINIDAE)
- delicatula, Psychrochlamys delicatula H.A. Jonkers, 2003 - syn of: Zygochlamys delicatula (F.W. Hutton, 1873) - (PECTINIDAE)
- delicatula, Phasianella delicatula J.E. Tenison-Woods, 1877 - syn of: Phasianella australis J.B.P.A. Lamarck, 1822 - (PHASIANELLIDAE)
- delicatula, Cratis delicatula A.W.B. Powell, 1937 - (PHILOBRYIDAE)
- delicatula, Martesia delicatula H.B. Preston, 1910 - syn of: Barnea manilensis (R.A. Philippi, 1847) - (PHOLADIDAE)
- delicatula, Cyclonema delicatula Lindström, 1884 † - (PLATYCERATIDAE) (FOSSIL)
- delicatula, Pirenella delicatula D.G. Reid, 2016 - (POTAMIDIDAE)
- delicatula, Pegmavalvula delicatula Newell & Boyd, 1970 † - (PSEUDOMONOTIDAE) (FOSSIL)
- delicatula, Taguahelix delicatula (A.W.B. Powell, 1955) - (PUNCTIDAE)
- delicatula, Laoma delicatula A.W.B. Powell, 1955 - syn of: Taguahelix delicatula (A.W.B. Powell, 1955) - (PUNCTIDAE)
- delicatula, Odostomia delicatula P.P. Carpenter, 1864 - (PYRAMIDELLIDAE)
- delicatula, Kleinella delicatula E. Saurin, 1962 - (PYRAMIDELLIDAE)
- delicatula, Stilla delicatula A.W.B. Powell, 1927 - (RAPHITOMIDAE)
- delicatula, Rimella delicatula L. Penna-Neme, 1965 † - (RIMELLIDAE) (FOSSIL)
- delicatula, Onoba delicatula (A.W.B. Powell, 1933) - (RISSOIDAE)
- delicatula, Rissoina delicatula H.B. Preston, 1905 - (RISSOINIDAE)
- delicatula, Rostellariella delicatula (G. Nevill, 1881) - (ROSTELLARIIDAE)
- delicatula, Tibia delicatula G. Nevill, 1881 - syn of: Rostellariella delicatula (G. Nevill, 1881) - (ROSTELLARIIDAE)
- delicatula, Proameria delicatula (R.J. Shuttleworth, 1852) - (SPIRAXIDAE)
- delicatula, Linearis delicatula Warren, 1933 † - (TELLINIDAE) (FOSSIL)
- delicatula, Tellina delicatula G.P. Deshayes, 1855 - syn of: Tellina virgo (S.C.T. Hanley, 1844) - (TELLINIDAE)
- delicatula, Scutarcopagia scobinata delicatula R. Selli, 1973 - (TELLINIDAE)
- delicatula, Terebra delicatula S.D. Kaicher, 1981 - syn of: Terebra alba J.E. Gray, 1834 - (TEREBRIDAE)
- delicatula, Terebra delicatula H.B. Preston MS - syn of: Terebra alba J.E. Gray, 1834 - (TEREBRIDAE)
- delicatula, Triphora delicatula K.H.J. Thiele, 1912 - (TRIPHORIDAE)
- delicatula, Venus delicatula G.P. Deshayes, 1857 † - (VENERIDAE) (FOSSIL)
- delicatula, Schwartziella delicatula (C.F. Laseron, 1956) - (ZEBINIDAE)
- delicatula major, Proameria delicatula major (E.C. Von Martens, 1891) - (SPIRAXIDAE)
- delicatula montivaga, Proameria delicatula montivaga H.B. Baker, 1941 - (SPIRAXIDAE)
- delicatula nana, Rostellariella delicatula nana E. Romagna-Manoja, 1977 - (ROSTELLARIIDAE)
- delicatula nivea, Mactra delicatula nivea H.B. Preston, 1904 - syn of: Mactra cuneata J.F. Gmelin, 1791 - (MACTRIDAE)
- delicatula notata, Helicina delicatula notata L. Pfeiffer, 1856 - syn of: Tristramia notata (L. Pfeiffer, 1856) - (HELICINIDAE)
- delicatula subantartica, Zygochlamys delicatula subantartica C. Hedley, 1916 - (PECTINIDAE)
- delicatulina, Belomitra quadruplex delicatulina É.A.A. Locard, 1897 - (BELOMITRIDAE)
- delicatulina, Clionella delicatulina É.A.A. Locard, 1897 - syn of: Belomitra quadruplex (R.B. Watson, 1882) - (CLAVATULIDAE)
- delicatulina costulata, Clionella delicatulina costulata É.A.A. Locard, 1897 - syn of: Belomitra quadruplex (R.B. Watson, 1882) - (CLAVATULIDAE)
- delicatulum, Probuccinum delicatulum A.W.B. Powell, 1951 - (BUCCINIDAE)
- delicatulum, Caecum delicatulum A.E. Verrill & K.J. Bush, 1900 - (CAECIDAE)
- delicatulum, Dallocardia delicatulum E.A. Smith, 1915 - syn of: Dallocardia muricata (C. Linnaeus, 1758) - (CARDIIDAE)
- delicatulum, Epitonium delicatulum (C.B. Adams, 1869) - (EPITONIIDAE)
- delicatulum, Epitonium delicatulum J.C.H. Crosse & P.H. Fischer, 1864 - syn of: Epitonium jukesianum (E. Forbes, 1852) - (EPITONIIDAE)
- delicatulum, Protobactrites delicatulum Troedsson, 1932 † - (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- delicatulum, Xenopomoides delicatulum C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- delicatulus, Acteon delicatulus W.H. Dall, 1889 - syn of: Acteon delicatus W.H. Dall, 1889 - (ACTEONIDAE)
- delicatulus, Aeneator delicatulus A.W.B. Powell, 1929 † - (BUCCINIDAE) (FOSSIL)
- delicatulus, Bostryx delicatulus R.A. Philippi, 1867 - (BULIMULIDAE)
- delicatulus, Cadulus delicatulus H.H. Suter, 1913 - (GADILIDAE)
- delicatulus, Guraleus delicatulus (J.E. Tenison-Woods, 1879) - (MANGELIIDAE)
- delicatulus, Pandora delicatulus P.P. Carpenter, 1865 - syn of: Pandora bilirata T.A. Conrad, 1855 - (PANDORIDAE)
- delicatulus, Protofusus delicatulus F. Haas, 1953 † - (PURPURINIDAE) (FOSSIL)
- delicatulus, Retusa delicatulus A. Adams, 1862 - (RETUSIDAE)
- delicatulus, Yezoites delicatulus (Warren, 1930 †) - (SCAPHITIDAE) (FOSSIL)
- delicatulus, Muensterites delicatulus McLearn, 1947 † - (TRACHYCERATIDAE) (FOSSIL)
- delicatulus, Trochus delicatulus R.A. Philippi, 1846 - syn of: Coelotrochus tiaratus (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- delicatulus greenhornensis, Yezoites delicatulus greenhornensis Cobban, 1983 † - (SCAPHITIDAE) (FOSSIL)
- delicatulus sloani, Yezoites delicatulus sloani Cobban, 1983 † - (SCAPHITIDAE) (FOSSIL)
- delicatum, Trachycardium delicatum (E.A. Smith, 1915) - (CARDIIDAE)
- delicatum, Venericardia delicatum J.C. Verco, 1908 - syn of: Purpurocardia amabilis (G.P. Deshayes, 1854) - (CARDITIDAE)
- delicatum, Bittium delicatum (R.B. Watson, 1880) - (CERITHIIDAE)
- delicatum, Vexillum delicatum (A. Adams, 1853) - (COSTELLARIIDAE)
- delicatum, Echioceras delicatum Buckman, 1914 † - (ECHIOCERATIDAE) (FOSSIL)
- delicatum, Plesechioceras delicatum (Buckman, 1914 †) - (ECHIOCERATIDAE) (FOSSIL)
- delicatum, Walcottoceras delicatum B.Z. Li, 1984 † - (ELLESMEROCERATIDAE) (FOSSIL)
- delicatum, Entodesma delicatum (L.N. Marincovich, 1973) - (LYONSIIDAE)
- delicatum, Gabboceras delicatum Taylor & Guex, 2002 † - (METASIBIRITIDAE) (FOSSIL)
- delicatum, Cyclostoma delicatum R.A. Philippi, 1848 - syn of: Torellia delicata (R.A. Philippi, 1844) - (POMATIIDAE)
- delicatum, Punctulum delicatum A.N. Golikov & B.I. Sirenko, 1998 - syn of: Punctulum flavum (T.A. Okutani, 1964) - (RISSOIDAE)
- delicatum, Terebellum delicatum J.T. Kuroda & T. Kawamoto, 1961 - (SERAPHSIDAE)
- delicatum, Asthenoceras delicatum Imlay, 1973 † - (SONNINIIDAE) (FOSSIL)
- delicatum, Opeas delicatum J.W. Taylor, 1877 - (SUBULINIDAE)
- delicatura, Zoila eludens delicatura D.M. Chandler & DuRoss, 1997 - (CYPRAEIDAE)
- delicatus, Acteon delicatus W.H. Dall, 1889 - (ACTEONIDAE)
- delicatus, Zeacumantus delicatus C.R. Laws, 1950 - syn of: Pyrazus ebeninus (J.G. Bruguière, 1792) - (BATILLARIIDAE)
- delicatus, Calagrassor delicatus Fraussen & Stahlschmidt, 2016 - (BUCCINIDAE)
- delicatus, Cantharus delicatus E.A. Smith, 1899 - syn of: Pollia delicata (E.A. Smith, 1899) - (BUCCINIDAE)
- delicatus, Steironepion delicatus J.A. Ortea, J. Espinosa & R. Fernández-Garcés, 2008 - (COLUMBELLIDAE)
- delicatus, Conus delicatus M.M. Schepman, 1913 - syn of: Fusiconus aculeiformis (L.A. Reeve, 1844) - (CONIDAE)
- delicatus, Boucardicus delicatus K.C. Emberton & T.A. Pearce, 1999 - (CYCLOPHORIDAE)
- delicatus, Napaeus delicatus M.R. Alonso, Y. Yanes & C.M. Ibáñez, 2011 - (ENIDAE)
- delicatus, Fusus delicatus J.G. Jeffreys, 1883 - syn of: Colus holboelli (H.P.C. Møller, 1842) - (FASCIOLARIIDAE)
- delicatus, Neogoniatites delicatus W. Korn & al., 1999 † - (GONIATITIDAE) (FOSSIL)
- delicatus, Hipponix delicatus W.H. Dall, 1908 - (HIPPONICIDAE)
- delicatus, Parakolithes delicatus He & al., 1984 † - (HYOLITHIDA (UNASSIGNED)) (FOSSIL)
- delicatus, Stenosemus delicatus (P. Kaas, 1991) - (ISCHNOCHITONIDAE)
- delicatus, Abyssotrophon delicatus (J.T. Kuroda, 1953) - (MURICIDAE)
- delicatus, Nassarius delicatus (A. Adams, 1852) - (NASSARIIDAE)
- delicatus, Liguus fasciatus delicatus C.T. Simpson, 1920 - (ORTHALICIDAE)
- delicatus, Otoites delicatus Buckman † - (OTOITIDAE) (FOSSIL)
- delicatus, Prorsisphinctes delicatus (Imlay, 1962 †) - (PERISPHINCTIDAE) (FOSSIL)
- delicatus, Bayerotrochus delicatus S.P. Zhang, S.Q. Zhang & Wei, 2016 - (PLEUROTOMARIIDAE)
- delicatus, Pyrazus delicatus C.R. Laws, 1950 - syn of: Pyrazus ebeninus (J.G. Bruguière, 1792) - (POTAMIDIDAE)
- delicatus, Asaphis delicatus N.E. Weisbord, 1929 † - (PSAMMOBIIDAE) (FOSSIL)
- delicatus, Antiplanes delicatus (T.A. Okutani & A. Iwahori, 1992) - (PSEUDOMELATOMIDAE)
- delicatus, Rectiplanes delicatus (T.A. Okutani & A. Iwahori, 1992) - syn of: Antiplanes delicatus (T.A. Okutani & A. Iwahori, 1992) - (PSEUDOMELATOMIDAE)
- delicatus, Volutaxis delicatus (H.A. Pilsbry, 1907) - (SPIRAXIDAE)
- delicatus, Sinoceltites delicatus H. Guo, 1988 † - (TAPASHANITIDAE) (FOSSIL)
- delicatus, Unio terminalis delicatus (I. Lea, 1863) - (UNIONIDAE)
- delicatus, Microceramus delicatus C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Deliciola, Genus Deliciola T. Iredale, 1944 (HELICARIONIDAE)
- deliciosa, Monia deliciosa T. Iredale, 1936 - (ANOMIIDAE)
- deliciosa, Camaena deliciosa (L. Pfeiffer, 1862) - (CAMAENIDAE)
- deliciosa, Palaina deliciosa T. Iredale, 1944 - (DIPLOMMATINIDAE)
- deliciosa, Helix deliciosa L. Pfeiffer, 1862 - syn of: Camaena deliciosa (L. Pfeiffer, 1862) - (HELICIDAE)
- deliciosa, Zilchogyra deliciosa (K.H.J. Thiele, 1927) - (HELICODISCIDAE)
- deliciosa, Limea deliciosa (K.H.J. Thiele, 1920) - (LIMIDAE)
- deliciosa, Eucithara deliciosa K.H. Barnard, 1959 - (MANGELIIDAE)
- deliciosa, Volvarina deliciosa (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- deliciosa, Hyalina deliciosa A.R.J.B. Bavay in P. Dautzenberg, 1912 - syn of: Volvarina deliciosa (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- deliciosa, Marginella deliciosa A.R.J.B. Bavay in P. Dautzenberg, 1912 - syn of: Volvarina deliciosa (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- deliciosa, Verilarca deliciosa (T. Iredale, 1939) - (NOETIIDAE)
- deliciosa, Laevichlamys deliciosa (T. Iredale, 1939) - (PECTINIDAE)
- deliciosa, Tropidophora deliciosa A.E.J. Férussac, 1850 - (POMATIIDAE)
- deliciosa, Odostomia deliciosa W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- deliciosa, Pleurotomella deliciosa K.H.J. Thiele, 1912 - (RAPHITOMIDAE)
- deliciosa, Alvania deliciosa (J.G. Jeffreys, 1884) - (RISSOIDAE)
- deliciosa, Colpospira deliciosa (R.B. Watson, 1881) - (TURRITELLIDAE)
- deliciosa, Lyria deliciosa (R.P. Montrouzier, 1859) - (VOLUTIDAE)
- deliciosa, Voluta deliciosa R.P. Montrouzier, 1859 - syn of: Lyria deliciosa (R.P. Montrouzier, 1859) - (VOLUTIDAE)
- deliciosa efasciata, Marginella deliciosa efasciata A.R.J.B. Bavay in P. Dautzenberg, 1912 - syn of: Volvarina deliciosa (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- deliciosa howensis, Lyria deliciosa howensis T. Iredale, 1937 - (VOLUTIDAE)
- deliciosa multicostata, Rissoa deliciosa multicostata J.G. Jeffreys, 1884 - syn of: Alvania porcupinae S. Gofas & A. Warén, 1982 - (RISSOIDAE)
- Deliciosalvania, syn of: Genus Alvania A. Risso, 1826 (RISSOIDAE)
- deliciosum, Prunum deliciosum A.R.J.B. Bavay in P. Dautzenberg, 1912 - syn of: Volvarina deliciosa (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- delicosa, Sydaphera delicosa C.F. Laseron, 1955 - syn of: Sydaphera undulata (G.B. II Sowerby, 1849) - (CANCELLARIIDAE)
- delicosa, Colpospira delicosa (Watson, 1881) - (TURRITELLIDAE)
- delii, Montenegrina laxa delii Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- Delima, Genus Delima J.D.W. Hartmann, 1842 (CLAUSILIIDAE)
- delimaeformis, Medora agnata delimaeformis H. Nordsieck, 1970 - (CLAUSILIIDAE)
- delineata, Anachis delineata E. Rolán & Á. De Oliveira, 2008 - (COLUMBELLIDAE)
- delineata, Columbella delineata K.H.J. Thiele, 1925 - syn of: Pyreneola semipicta (G.B. III Sowerby, 1894) - (COLUMBELLIDAE)
- delinificus, Modiolus delinificus T. Iredale, 1924 - syn of: Gibbomodiola albicosta (J.B.P.A. Lamarck, 1819) - (MYTILIDAE)
- Delinitesta, syn of: Subgenus Therasia (Phenacohelix) H.H. Suter, 1892 (CHAROPIDAE)
- delira, Opacuincola delira M. Haase, 2008 - (TATEIDAE)
- dellabellai, Cymenorytis dellabellai M. Sosso, Angelo & A. Bonfitto, 2013 † - (VANIKORIDAE) (FOSSIL)
- dellangelloi, Leptochiton dellangelloi B.I. Sirenko, 2013 † - (LEPTOCHITONIDAE) (FOSSIL)
- dellangeloi, Loricella dellangeloi B.I. Sirenko, 2008 - (LORICIDAE)
- dellechiaii, Pleurobranchaea dellechiaii J.B. Vérany, 1846 - syn of: Pleurobranchaea meckeli (H.M.D. de Blainville, 1825) - (PLEUROBRANCHAEIDAE)
- dellechiaje, Armina dellechiaje J.B. Vérany, 1862 - (ARMINIDAE)
- dellechiajei, Platydoris dellechiajei J.B. Vérany, 1862 - syn of: Platydoris argo (C. Linnaeus, 1767) - (DISCODORIDIDAE)
- delli, Pseudaneitea delli D.W. Burton, 1963 - (ATHORACOPHORIDAE)
- delli, Otukaia delli (J.H. McLean & B.G. Andrade, 1982) - (CALLIOSTOMATIDAE)
- delli, Calliotropis delli B.A. Marshall, 1979 - (CALLIOTROPIDAE)
- delli, Inglisella delli (A.G. Beu, 1970 †) - (CANCELLARIIDAE) (FOSSIL)
- delli, Cavellia delli (F.M. Climo, 1969) - (CHAROPIDAE)
- delli, Carditella delli M.A. Crozier, 1966 - (CONDYLOCARDIIDAE)
- delli, Cuspidaria delli J. Knudsen, 1970 - (CUSPIDARIIDAE)
- delli, Cyclochlamys delli H.H. Dijkstra & B.A. Marshall, 2008 - (CYCLOCHLAMYDIDAE)
- delli, Eatoniella delli W.F. Ponder, 1965 - (EATONIELLIDAE)
- delli, Striocadulus delli (J. Marwick, 1965 †) - (GADILIDAE) (FOSSIL)
- delli, Cucumerunio websteri delli D.F. McMichael & I.D. Hiscock, 1958 - (HYRIIDAE)
- delli, Limatula delli C.A. Fleming, 1978 - (LIMIDAE)
- delli, Laevilitorina delli (A.W.B. Powell, 1955) - (LITTORINIDAE)
- delli, Neilo delli B.A. Marshall, 1978 - (MALLETIIDAE)
- delli, Enixotrophon delli (A.G. Beu, 1967 †) - (MURICIDAE) (FOSSIL)
- delli, Poirieria delli P.A. Maxwell, 1971 † - (MURICIDAE) (FOSSIL)
- delli, Neilonella delli P.A. Maxwell, 1992 † - (NEILONELLIDAE) (FOSSIL)
- delli, Linucula delli P.A. Maxwell, 1988 † - (NUCULIDAE) (FOSSIL)
- delli, Turbonilla delli A.W.B. Powell, 1976 - syn of: Planpyrgiscus lawsi R.K. Dell, 1956 - (PYRAMIDELLIDAE)
- delli, Onoba delli (W.F. Ponder, 1968) - (RISSOIDAE)
- delli, Brookula delli H. Numanami, 1996 - (SEGUENZIOIDEA (UNASSIGNED))
- delli, Zeacolpus delli J. Marwick, 1957 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- delli, Tractolira delli J.H. Leal & M.G. Harasewych, 2005 - (VOLUTIDAE)
- delliana, Nuculana delliana M. Huber, 2010 - syn of: Jupiteria wolffi R.K. Dell, 1956 - (NUCULANIDAE)
- Dellina, syn of: Genus Belomitra P. Fischer, 1882 (BELOMITRIDAE)
- Dellius, Genus Dellius M. Huber, Langleit & Kreipl, 2015 (TELLINIDAE)
- delmaresi, Ligatella delmaresi J.R. Bourguignat, 1887 - (POMATIIDAE)
- delmasi, Kellia delmasi É. Lamy, 1927 - (KELLIIDAE)
- delmasi, Melanopsis delmasi P.M. Pallary, 1936 - (MELANOPSIDAE)
- delmastroi, Alzoniella delmastroi M. Bodon & S. Cianfanelli, 2004 - (HYDROBIIDAE)
- Delminiella, Genus Delminiella Kochansky-Devidé & Sliškovic, 1972 † (CLAVATULIDAE) (FOSSIL)
- delmontana, Turbonilla delmontana P. Bartsch, 1937 - (PYRAMIDELLIDAE)
- delmontanus, Campylites delmontanus (Oppel, 1863 †) - (OPPELIIDAE) (FOSSIL)
- delmonteana, Alcadia delmonteana H.A. Pilsbry, 1933 - (HELICINIDAE)
- delmontensis, Melanella delmontensis A.G. Smith & W.J. Gordon, 1948 - syn of: Melanella thersites (P.P. Carpenter, 1864) - (EULIMIDAE)
- delmontensis, Balcis delmontensis A.G. Smith & W.J. Gordon, 1948 - syn of: Melanella thersites (P.P. Carpenter, 1864) - (EULIMIDAE)
- delmontensis, Pyrgiscus delmontensis P. Bartsch, 1927 - syn of: Turbonilla gilli delmontensis W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- delmontensis, Turbonilla gilli delmontensis W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- delocata, Laemodonta delocata J.T. Kuroda - (ELLOBIIDAE)
- delodonta, Unio delodonta J.B.P.A. Lamarck, 1819. - syn of: Diplodon delodontus (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- delodontus, Diplodon delodontus (J.B.P.A. Lamarck, 1819) - (HYRIIDAE)
- delodontus paraguayensis, Diplodon delodontus paraguayensis (I. Lea, 1866) - (HYRIIDAE)
- delodontus pilsbryi, Diplodon delodontus pilsbryi W.B. Marshall, 1928 - (HYRIIDAE)
- delodontus wymanii, Diplodon delodontus wymanii I. Lea, 1860 - syn of: Diplodon wymanii (I. Lea, 1860) - (HYRIIDAE)
- deloi, Pseudozygopleura deloi Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- Delomphalus, syn of: Genus Discus L.I. Fitzinger, 1833 (DISCIDAE)
- delonguevilleae, Calliostoma delonguevilleae Vilvens & Swinnen, 2017 - (CALLIOSTOMATIDAE)
- Delonovolva, syn of: Genus Cuspivolva J. Cate, 1973 (OVULIDAE)
- Delonovolva, syn of: Genus Cuspivolva J. Cate, 1973 (OVULIDAE)
- Deloplecta, syn of: Genus Abida W.E. Leach in W.H. Turton, 1831 (CHONDRINIDAE)
- delopleura, Rahula delopleura J.J. Vermeulen, T.S. Liew & M. Schilthuizen, 2015 - (HELICARIONIDAE)
- delorensis, Potosiplina delorensis Stinchcomb & Angeli, 2002 † - (PROPLINIDAE) (FOSSIL)
- delorti, Bulla delorti J.F. Mabille, 1896 - syn of: Bulla ampulla C. Linnaeus, 1758 - (BULLIDAE)
- Delos, Genus Delos F.W. Hutton, 1904 (RHYTIDIDAE)
- delosensis, Clathromangelia delosensis L.A. Reeve, 1846 - syn of: Clathromangelia granum (R.A. Philippi, 1844) - (CLATHURELLIDAE)
- delosensis, Pleurotoma delosensis L.A. Reeve, 1846 - syn of: Clathromangelia granum (R.A. Philippi, 1844) - (TURRIDAE)
- delosi, Nassarius delosi (W.P. Woodring, 1946) - (NASSARIIDAE)
- delosi, Nassa delosi W.P. Woodring, 1946 - syn of: Nassarius delosi (W.P. Woodring, 1946) - (NASSARIIDAE)
- Delouagapia, Genus Delouagapia J. Stanisic, 2010 (RHYTIDIDAE)
- Delougapia, Genus Delougapia A. Powell, 1952 (RHYTIDIDAE)
- delpeutum, Cardium delpeutum O.D. McGill, 1964 - syn of: Cardium indicum J.B.P.A. Lamarck, 1818 - (CARDIIDAE)
- Delpeya, Genus Delpeya Collignon, 1949 † (DISCOHELICIDAE) (FOSSIL)
- delpeyae, Palaeostylus delpeyae Batten, 1985 † - (PALAEOSTYLIDAE) (FOSSIL)
- delphax, Chloritis delphax (W. Kobelt, 1891) - (CAMAENIDAE)
- delphica, Clausilia delphica C.A. Westerlund, 1884 - syn of: Sericata sericata (L. Pfeiffer, 1849) - (CLAUSILIIDAE)
- Delphiceras, Genus Delphiceras Becker & House, 2000 † (GEPHUROCERATIDAE) (FOSSIL)
- delphicola, Loxonema delphicola J.W. Hall, 1860 † - syn of: Palaeozygopleura delphicola (J.W. Hall, 1860 †) - (LOXONEMATIDAE) (FOSSIL)
- delphicola, Palaeozygopleura delphicola (J.W. Hall, 1860 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- delphiense, Clauseniceras delphiense (Kindle, 1901 †) - (GEPHUROCERATIDAE) (FOSSIL)
- delphiensis, Goniatites delphiensis Kindle, 1901 † - syn of: Clauseniceras delphiense (Kindle, 1901 †) - (GONIATITIDAE) (FOSSIL)
- delphina, Cerithium vulgatum delphina T.A. de M. Monterosato, 1910 - (CERITHIIDAE)
- delphinae, Drymaeus strigatus delphinae S. Moricand, 1858 - (BULIMULIDAE)
- delphinae, Clavatula delphinae F. Nolf, 2008 - (CLAVATULIDAE)
- delphinae, Gadila delphinae V. Scarabino, 2008 - (GADILIDAE)
- delphinae, Epidulcina delphinae R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- Delphinatia, Subgenus Campylaea (Delphinatia) P. Hesse, 1931 (HELICIDAE)
- delphineae, Clavus delphineae R.N. Kilburn, A.E. Fedosov & Y.I. Kantor, 2014 - (DRILLIIDAE)
- delphineae, Turbonilla delphineae A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- Delphinella, Genus Delphinella Le Hegarat, 1973 † (NEOCOMITIDAE) (FOSSIL)
- delphinense, Delphinella delphinense (Kilian, 1899 †) - (NEOCOMITIDAE) (FOSSIL)
- delphinensis, Bithynia leberonensis delphinensis É.A.A. Locard, 1883 † - (BITHYNIIDAE) (FOSSIL)
- delphinensis, Granaria delphinensis É.A.A. Locard, 1894 - syn of: Granaria variabilis (J.P.R. Draparnaud, 1801) - (CHONDRINIDAE)
- delphinensis, Hoplites delphinensis Kilian, 1899 † - syn of: Delphinella delphinense (Kilian, 1899 †) - (HOPLITIDAE) (FOSSIL)
- delphini, Sitala delphini (E. Fischer-Piette, Ch.P. Blanc & D. Vukadinovic, 1974) - (ARIOPHANTIDAE)
- delphinica, Dentimargo delphinica A.R.J.B. Bavay, 1920 - (MARGINELLIDAE)
- Delphinites, Genus Delphinites Sayn, 1901 † (NEOCOMITIDAE) (FOSSIL)
- delphinocephalus, Lobites delphinocephalus (J. Von Hauer, 1855 †) - (LOBITIDAE) (FOSSIL)
- delphinodonta, Nucula delphinodonta J.W. Mighels & Adams, 1842 - (NUCULIDAE)
- Delphinoidea, Genus Delphinoidea Brown, 1827 † (SKENEIDAE) (FOSSIL)
- Delphinoidea, syn of: Genus Skenea J. Fleming, 1825 (SKENEIDAE)
- delphinoides, Oxycypraea delphinoides (A.E.M. Cossmann, 1886 †) - (EOCYPRAEIDAE) (FOSSIL)
- delphinoides, Trachyspira delphinoides C. Gemmellaro, 1889 † - syn of: Trachyspira delphinuloides C. Gemmellaro, 1889 † - (TRACHYSPIRIDAE) (FOSSIL)
- Delphinonaias, Subgenus Lampsilis (Delphinonaias) J.C.H. Crosse & P. Fischer, 1894 (UNIONIDAE)
- Delphinuella, Genus Delphinuella Heidelberger, 2001 † (ANOMPHALIDAE) (FOSSIL)
- Delphinula, syn of: Genus Angaria P.F. Röding, 1798 (ANGARIIDAE)
- delphinula, Geomitra delphinula (R.T. Lowe, 1831) - (HYGROMIIDAE)
- delphinula, Zygites delphinula (Laube, 1868 †) - (ZYGITIDAE) (FOSSIL)
- delphinuloides, Heliacus delphinuloides A.V.M.D. D'Orbigny, 1842 - (ARCHITECTONICIDAE)
- delphinuloides, Bembexia delphinuloides von Schlotheim, 1820 † - syn of: Euryzone delphinuloides (von Schlotheim, 1820 †) - (EOTOMARIIDAE) (FOSSIL)
- delphinuloides, Euryzone delphinuloides (von Schlotheim, 1820 †) - (GOSSELETINIDAE) (FOSSIL)
- delphinuloides, Geomitra delphinuloides R.T. Lowe, 1860 - (HYGROMIIDAE)
- delphinuloides, Pleurotomaria delphinuloides von Schlotheim, 1820 † - syn of: Euryzone delphinuloides (von Schlotheim, 1820 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- delphinuloides, Trachyspira delphinuloides C. Gemmellaro, 1889 † - (TRACHYSPIRIDAE) (FOSSIL)
- delphinuloides oetelshofensis, Euryzone delphinuloides oetelshofensis (Schlotheim, 1820 †) - (GOSSELETINIDAE) (FOSSIL)
- DELPHINULOPSIDAE Blodgett, Frýda & Stanley, 2001 † - Family (GASTROPODA-NERITIMORPHA [Subclass]-CYCLONERITIMORPHA [Order]-NERITOPSOIDEA [Superfamily]) (FOSSIL)
- Delphinulopsis, Genus Delphinulopsis Laube, 1868 † (DELPHINULOPSIDAE) (FOSSIL)
- Delphinulopsis, syn of: Subgenus Turbo (Batillus) H.C.F. Schumacher, 1817 (TURBINIDAE)
- delphinulus, Angaria delphinulus C. Linnaeus, 1758 - syn of: Angaria delphinus (C. Linnaeus, 1758) - (ANGARIIDAE)
- Delphinulus, syn of: Genus Angaria P.F. Röding, 1798 (ANGARIIDAE)
- delphinulus, Delphinonaias delphinulus (P.M.A. Morelet, 1849) - (UNIONIDAE)
- delphinus, Angaria delphinus (C. Linnaeus, 1758) - (ANGARIIDAE)
- delphinus, Cerithium delphinus T.A. de M. Monterosato, 1910 - syn of: Cerithium protractum Ant. Bivona-Bernardi in And. Bivona-Bernardi, 1838 - (CERITHIIDAE)
- delphinus, Nautilus delphinus E. Forbes, 1846 † - syn of: Yakutionautilus kavalerovae Arkhipov & I.S. Barskov, 1970 † - (NAUTILIDAE) (FOSSIL)
- delphinus, Orthalicus delphinus (H. Strebel, 1909) - (ORTHALICIDAE)
- delphinus, Prolobites delphinus (C.L.F. von Sandberger, 1856 †) - (PROLOBITIDAE) (FOSSIL)
- delphinus, Chondroceras delphinus Buckman † - (SPHAEROCERATIDAE) (FOSSIL)
- delphinus, Turbo delphinus C. Linnaeus, 1758 - syn of: Angaria delphinus (C. Linnaeus, 1758) - (TURBINIDAE)
- delphinus, Hyriopsis delphinus Ermst C.L. Gruner, 1841 - syn of: Hyriopsis bialatus C.T. Simpson, 1900 - (UNIONIDAE)
- delphinus aculeata, Angaria delphinus aculeata L.A. Reeve, 1842 - syn of: Angaria aculeata (L.A. Reeve, 1842) - (ANGARIIDAE)
- delphinus atavus, Prolobites delphinus atavus Frech, 1897 † - syn of: Prolobites delphinus (C.L.F. von Sandberger, 1856 †) - (PROLOBITIDAE) (FOSSIL)
- delphinus atrata, Angaria delphinus atrata (L.A. Reeve, 1843) - (ANGARIIDAE)
- delphinus formosa, Angaria delphinus formosa (L.A. Reeve, 1843) - syn of: Angaria formosa (L.A. Reeve, 1843) - (ANGARIIDAE)
- delphinus incisa, Batillus delphinus incisa L.A. Reeve, 1843 - syn of: Angaria delphinus (C. Linnaeus, 1758) - (TURBINIDAE)
- delphinus insulcatus, Prolobites delphinus insulcatus C.N. Lange, 1929 † - syn of: Melonites insulcatus (C.N. Lange, 1929 †) - (PROLOBITIDAE) (FOSSIL)
- delphinus laciniata, Angaria delphinus laciniata J.B.P.A. Lamarck, 1816 - (ANGARIIDAE)
- delphinus melanacantha, Angaria delphinus melanacantha L.A. Reeve, 1842 - syn of: Angaria melanacantha (L.A. Reeve, 1842) - (ANGARIIDAE)
- delphinus nanus, Prolobites delphinus nanus E. Perna, 1914 † - syn of: Prolobites nanus E. Perna, 1914 † - (PROLOBITIDAE) (FOSSIL)
- delphinus nebulosa, Oxystyla delphinus nebulosa H. Strebel - syn of: Orthalicus delphinus (H. Strebel, 1909) - (ORTHALICIDAE)
- delphinus nesiotica, Oxystyla delphinus nesiotica W.H. Dall, 1926 - syn of: Orthalicus delphinus (H. Strebel, 1909) - (ORTHALICIDAE)
- delphinus nodosa, Angaria delphinus nodosa (L.A. Reeve, 1846) - syn of: Angaria nodosa (L.A. Reeve, 1846) - (ANGARIIDAE)
- delphinus pumilio, Zebra delphinus pumilio H. Strebel, 1909 - syn of: Orthalicus delphinus (H. Strebel, 1909) - (ORTHALICIDAE)
- delphinus striatus, Prolobites delphinus striatus C.N. Lange, 1929 † - (PROLOBITIDAE) (FOSSIL)
- delphinus tardesulcatus, Prolobites delphinus tardesulcatus C.N. Lange, 1929 † - syn of: Prolobites delphinus (C.L.F. von Sandberger, 1856 †) - (PROLOBITIDAE) (FOSSIL)
- delphinus zonata, Angaria delphinus zonata N.H. Odhner, 1917 - syn of: Angaria zonata (N.H. Odhner, 1917) - (ANGARIIDAE)
- Delphionoidea, syn of: Genus Skenea J. Fleming, 1825 (SKENEIDAE)
- delphus, Crestjahitus delphus (Resser & Endo, 1937 †) - (CRESTJAHITIDAE) (FOSSIL)
- delpreteanus, Jujubinus striatus delpreteanus E.A. Smith, 1889 - (TROCHIDAE)
- delpretei, Platyla delpretei M. Paulucci, 1881 - syn of: Platyla similis O.W.H. Reinhardt, 1880 - (ACICULIDAE)
- delpretei, Vaceuchelus delpretei (G. Caramagna, 1888) - (CHILODONTIDAE)
- delpretei, Murella scabriuscula delpretei (T.A. de M. Monterosato, 1892) - (HELICIDAE)
- delpretei, Turbonilla delpretei G.R. Sulliotti, 1889 - syn of: Parthenina indistincta (G. Montagu, 1808) - (PYRAMIDELLIDAE)
- delpretei, Anodonta delpretei J.R. Bourguignat, 1882 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- delpretiana, Clausilia delpretiana C. De Stefani, 1879 - syn of: Clausilia rugosa pinii C.A. Westerlund, 1878 - (CLAUSILIIDAE)
- delpretiana, Helix delpretiana M. Paulucci, 1878 - (HELICIDAE)
- delpretiana, Belgrandia delpretiana S. Clessin, 1881 - syn of: Belgrandia thermalis (C. Linnaeus, 1767) - (HYDROBIIDAE)
- delpretiana, Valvata delpretiana M. Paulucci, 1878 - syn of: Valvata cristata G. Müller, 1774 - (VALVATIDAE)
- delriensis, Turritella delriensis Stanton, 1947 † - (TURRITELLIDAE) (FOSSIL)
- delsa, Quantulopinna delsa T. Iredale, 1939 - syn of: Pinna muricata C. Linnaeus, 1758 - (PINNIDAE)
- delsa howensis, Pinna delsa howensis T. Iredale, 1939 - syn of: Pinna muricata C. Linnaeus, 1758 - (PINNIDAE)
- delsaerdti, Amphidromus delsaerdti Thach, 2016 - (CAMAENIDAE)
- delta, Achatinella delta J.T. Gulick - syn of: Achatinella curta W. Newcomb, 1853 - (ACHATINELLIDAE)
- delta, Scrobs delta C.F. Laseron, 1950 - syn of: Anabathron luteofuscum (W.L. May, 1919) - (ANABATHRIDAE)
- delta, Chaperia delta J. Brown, 1952 † - (CAPROTINIDAE) (FOSSIL)
- delta, Cassis delta C.F. Parker, 1948 † - (CASSIDAE) (FOSSIL)
- delta, Hedleyoconcha delta (L. Pfeiffer, 1857) - (CHAROPIDAE)
- delta, Cuna delta (R. Tate & W.L. May, 1900) - (CONDYLOCARDIIDAE)
- delta, Pleuropoma laciniosa delta H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- delta, Paphies delta A.G. Beu, 2006 † - (MESODESMATIDAE) (FOSSIL)
- delta, Myadora delta J. Marwick, 1929 † - (MYOCHAMIDAE) (FOSSIL)
- delta, Christitys delta W.P. Popenoe & Saul, 1987 † - (PERISSITYIDAE) (FOSSIL)
- delta, Onoba delta (A.W.B. Powell, 1955) - (RISSOIDAE)
- delta, Kruppomenia delta A.H. Scheltema & C.F.C. Schander, 2000 - (SIMROTHIELLIDAE)
- delta, Dadagulella delta B. Rowson & P. Tattersfield, 2013 - (STREPTAXIDAE)
- delta, Cadella delta (M. Yokoyama, 1922) - (TELLINIDAE)
- delta hainanensis, Cadella delta hainanensis O.A. Scarlato, 1965 - (TELLINIDAE)
- Deltacardium, Genus Deltacardium Nagel, 2006 † (PRAECARDIIDAE) (FOSSIL)
- Deltachion, Subgenus Donax (Deltachion) T. Iredale, 1930 (DONACIDAE)
- deltae, Scaphula deltae W.T. Blanford, 1867 - (ARCIDAE)
- deltae, Stenothyra deltae (W.H. Benson, 1837) - (STENOTHYRIDAE)
- Deltamya, Genus Deltamya Burmester, 2004 † (PHOLADOMYIDAE) (FOSSIL)
- Deltaodon, Genus Deltaodon K.H. Barnard, 1962 (ARCIDAE)
- deltchevi, Microstygia deltchevi D.G. Georgiev & P. Glöer, 2015 - (HYDROBIIDAE)
- Deltoceras, Genus Deltoceras Hyatt, 1894 † (DELTOCERATIDAE) (FOSSIL)
- DELTOCERATIDAE Ulrich & al., 1942 † - Family (CEPHALOPODA-) (FOSSIL)
- Deltocymatoceras, Genus Deltocymatoceras Kummel, 1956 † (CYMATOCERATIDAE) (FOSSIL)
- deltodes, Pinna deltodes K.T. Menke, 1843 - (PINNIDAE)
- deltodes ultra, Exitopinna deltodes ultra T. Iredale 1939 - syn of: Pinna deltodes K.T. Menke, 1843 - (PINNIDAE)
- deltoidalis, Donax deltoidalis J.B.P.A. Lamarck, 1818 - syn of: Donax deltoides J.B.P.A. Lamarck, 1818 - (DONACIDAE)
- deltoidalis, Tellina deltoidalis J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- deltoidea, Bornia deltoidea Wood, 1840 † - (KELLIIDAE) (FOSSIL)
- deltoidea, Vasula deltoidea (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- deltoidea, Thais deltoidea J.B.P.A. Lamarck, 1822 - syn of: Vasula deltoidea (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- deltoidea, Purpura deltoidea J.B.P.A. Lamarck, 1822 - syn of: Vasula deltoidea (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- deltoidea, Thalessa deltoidea J.B.P.A. Lamarck, 1822 - syn of: Vasula deltoidea (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- deltoidea, Myalina deltoidea W.M. Gabb, 1859 † - syn of: Orthomyalina subquadrata (Shumard, 1855 †) - (MYALINIDAE) (FOSSIL)
- deltoidea, Trinacria deltoidea (J.B.P.A. Lamarck, 1805 †) - (NOETIIDAE) (FOSSIL)
- deltoidea, Nucula deltoidea Phillips, 1848 † - (NUCULIDAE) (FOSSIL)
- deltoidea, Plicatula deltoidea Tate † - (PLICATULIDAE) (FOSSIL)
- deltoidea, Plicatula deltoidea R.W. Dunker, 1849 - syn of: Plicatula plicata (C. Linnaeus, 1767) - (PLICATULIDAE)
- deltoidea, Millerelix deltoidea (C.T. Simpson, 1889) - (POLYGYRIDAE)
- deltoidea, Syndosmya deltoidea (G.P. Deshayes, 1857 †) - (SEMELIDAE) (FOSSIL)
- deltoidea, Tivelina deltoidea (J.B.P.A. Lamarck, 1806 †) - (VENERIDAE) (FOSSIL)
- deltoides, Cuna deltoides P.U. Middelfart, 2002 - (CONDYLOCARDIIDAE)
- deltoides, Cystiscus deltoides F. Boyer, 2003 - (CYSTISCIDAE)
- deltoides, Donax deltoides J.B.P.A. Lamarck, 1818 - (DONACIDAE)
- deltoides, Spisula deltoides J.B.P.A. Lamarck, 1818 - syn of: Spisula subtruncata (da Costa, 1778) - (MACTRIDAE)
- deltoides, Pelagiella deltoides Runnegar & Jell, 1976 † - (PELAGIELLIDAE) (FOSSIL)
- Deltoideum, Genus Deltoideum Rollier, 1917 † (GRYPHAEIDAE) (FOSSIL)
- deltoideum, Lepton deltoideum Wood, 1840 † - syn of: Bornia deltoidea Wood, 1840 † - (LASAEIDAE) (FOSSIL)
- deltoideum, Plagiostoma deltoideum Girty, 1909 † - (LIMIDAE) (FOSSIL)
- deltoideus, Nuculana deltoideus A. Risso, 1826 - syn of: Saccella commutata (R.A. Philippi, 1844) - (NUCULANIDAE)
- Deltoidoceras, Genus Deltoidoceras Buckman, 1902 † (GRAPHOCERATIDAE) (FOSSIL)
- Deltoidonautilus, Genus Deltoidonautilus Spath, 1927 † (HERCOGLOSSIDAE) (FOSSIL)
- Deltopecten, Genus Deltopecten Jack & Etheridge, 1892 † (DELTOPECTINIDAE) (FOSSIL)
- DELTOPECTINIDAE Dickins, 1957 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-PECTINIDA [Order]-AVICULOPECTINOIDEA [Superfamily]) (FOSSIL)
- deltostoma, Boettgeria deltostoma (R.T. Lowe, 1831) - (CLAUSILIIDAE)
- deltostoma crebistriata, Boettgeria deltostoma crebistriata (R.T. Lowe, 1855) - (CLAUSILIIDAE)
- deltostoma crebristriata, Boettgeria deltostoma crebristriata (R.T. Lowe, 1855) - (CLAUSILIIDAE)
- deltotus, Praestrigites deltotus (S.S. Buckman, 1924 †) - (STRIGOCERATIDAE) (FOSSIL)
- delucai, Conus delucai J. Coltro, 2004 - syn of: Conasprella iansa (E.J. Petuch, 1979) - (CONIDAE)
- deluci, Deltoidonautilus deluci (d'Archaic, 1850 †) - (HERCOGLOSSIDAE) (FOSSIL)
- deluci, Nautilus deluci d'Archaic, 1850 † - syn of: Deltoidonautilus deluci (d'Archaic, 1850 †) - (NAUTILIDAE) (FOSSIL)
- delucii, Mitraria delucii J.L.M. Defrance, 1824 † - (MITRIDAE) (FOSSIL)
- deludisubzona, Murchisonia deludisubzona E.G. Linsley, 1968 † - (MURCHISONIIDAE) (FOSSIL)
- delumbis, Bostryx delumbis L.A. Reeve, 1849 - (BULIMULIDAE)
- delumbis, Leptomactra delumbis (T.A. Conrad, 1832 †) - (MACTRIDAE) (FOSSIL)
- delumbis, Villosa delumbis (T.A. Conrad, 1834) - (UNIONIDAE)
- deluta, Mactra deluta A.A. Gould, 1850 - syn of: Cyclomactra ovata (J.E. Gray, 1843) - (MACTRIDAE)
- deluta, Otitoma deluta (A.A. Gould, 1860) - (PSEUDOMELATOMIDAE)
- deluta, Daphnella deluta A.A. Gould, 1860 - syn of: Otitoma deluta (A.A. Gould, 1860) - (RAPHITOMIDAE)
- deluvianus, Gradiconus deluvianus (J. Green, 1830 †) - (CONIDAE) (FOSSIL)
- delvallei, Baculites delvallei Riccardi, 1980 † - (BACULITIDAE) (FOSSIL)
- delvallense, Gaudryceras delvallense Anderson, 1958 † - (GAUDRYCERATIDAE) (FOSSIL)
- delvinensis, Albinaria delvinensis H. Nordsieck, 2015 - (CLAUSILIIDAE)
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