- dibaphiformis, Mitra dibaphiformis G.B. Sowerby, 1874 - syn of: Dibaphus multiplicata (W.H. Pease, 1865) - (MITRIDAE)
- Dibaphimitra, Genus Dibaphimitra W.O. Cernohorsky, 1970 (MITRIDAE)
- Dibaphus, Subgenus Mitra (Dibaphus) R.A. Philippi, 1847 (MITRIDAE)
- dibellai, Parviturbo dibellai G. Buzzurro & A. Cecalupo, 2007 - (SKENEIDAE)
- Diberus, syn of: Subgenus Lithophaga (Leiosolenus) P.P. Carpenter, 1857 (MYTILIDAE)
- dibica, Praeundulomya dibica Muromtseva, 1984 † - (SANGUINOLITIDAE) (FOSSIL)
- dibica, Praeundulomya dibica Muromzeva 1984 † - (SANGUINOLITIDAE) (FOSSIL)
- dibitata, Solariella dibitata G.D. Hanna, 1927 † - (SOLARIELLIDAE) (FOSSIL)
- diblasii, Stacheoceras diblasii C. Gemmellaro, 1887 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- dibleyi, Anapuzosia dibleyi Spath, 1922 † - (DESMOCERATIDAE) (FOSSIL)
- dibleyi, Hipponix dibleyi Sherborn † - (HIPPONICIDAE) (FOSSIL)
- dibleyi, Turritella dibleyi R.B. Newton, 1918 † - (TURRITELLIDAE) (FOSSIL)
- dibolos, Columbella dibolos K.H. Barnard, 1964 - syn of: Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (COLUMBELLIDAE)
- dibolos, Anarithma dibolos K.H. Barnard, 1964 - syn of: Anarithma metula (R.B. Hinds, 1843) - (MITROMORPHIDAE)
- dibothrion, Fruticicola dibothrion M. von Kimakowicz, 1884 - syn of: Perforatella dibothrion (M. von Kimakowicz, 1884) - (BRADYBAENIDAE)
- dibothrion, Perforatella dibothrion (M. von Kimakowicz, 1884) - (HYGROMIIDAE)
- dibothrion, Perforatella dibothrion E.A. Bielz, 1860 - syn of: Perforatella dibothrion (M. von Kimakowicz, 1884) - (HYGROMIIDAE)
- Dibothrion, syn of: Genus Perforatella F. Schlüter, 1838 (HYGROMIIDAE)
- dibothryon, Perforatella dibothryon M. von Kimakowicz, 1884 - syn of: Perforatella dibothrion (M. von Kimakowicz, 1884) - (HYGROMIIDAE)
- dibotrion, Perforatella dibotrion M. von Kimakowicz, 1884 - syn of: Perforatella dibothrion (M. von Kimakowicz, 1884) - (HYGROMIIDAE)
- Dicata, Genus Dicata R.L. Schmekel, 1967 (FACELINIDAE)
- Dicathais, Genus Dicathais T. Iredale, 1936 (MURICIDAE)
- dicella, Ledella dicella (W.H. Dall, 1908) - (NUCULANIDAE)
- dicella, Odostomia dicella P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- dicella, Yoldiella dicella W.H. Dall, 1908 - syn of: Ledella dicella (W.H. Dall, 1908) - (YOLDIIDAE)
- dicella, Yoldia dicella W.H. Dall, 1908 - syn of: Ledella dicella (W.H. Dall, 1908) - (YOLDIIDAE)
- Dicellonema, Genus Dicellonema Yu & Wang, 1975 † (BELLEROPHONTIDAE) (FOSSIL)
- dicellonemata, Dicellonema dicellonemata Yu & Wang, 1975 † - (BELLEROPHONTIDAE) (FOSSIL)
- diceras, Arca diceras Seguenza, 1882 † - syn of: Idonearca diceras (Seguenza, 1882 †) - (ARCIDAE) (FOSSIL)
- diceras, Idonearca diceras (Seguenza, 1882 †) - (CUCULLAEIDAE) (FOSSIL)
- Diceras, Genus Diceras Lamarck, 1805 † (DICERATIDAE) (FOSSIL)
- Dicerata, syn of: Genus Glossus G.S. Poli, 1795 (GLOSSIDAE)
- Diceratia, syn of: Genus Glossus G.S. Poli, 1795 (GLOSSIDAE)
- DICERATIDAE Dall, 1895 † - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-HIPPURITIDA [Order]-RADIOLITOIDEA [Superfamily]) (FOSSIL)
- Diceratoptyx, Genus Diceratoptyx H.A. Pilsbry, 1905 (CLAUSILIIDAE)
- DICEROCARDIIDAE Kutassy, 1934 † - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-IMPARIDENTIA [Superorder]-MEGALODONTIDA [Order]-MEGALODONTOIDEA [Super) (FOSSIL)
- Dicerocardium, Genus Dicerocardium Stoppani, 1856 † (DICEROCARDIIDAE) (FOSSIL)
- dicerus, Arcestes dicerus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- Dichachiton, syn of: Genus Cryptoplax H.M.D. De Blainville, 1818 (CRYPTOPLACIDAE)
- Dicharax, Subgenus Chamalycaeus (Dicharax) W. Kobelt & O.F. von Möllendorff, 1900 (CYCLOPHORIDAE)
- Dichatomites, syn of: Genus Dichotomites Koenen , 1909 † (POLYPTYCHITIDAE) (FOSSIL)
- dichelus, Dischides dichelus (R.B. Watson, 1879) - (GADILIDAE)
- dicheres, Oreoterebra dicheres W.P. Woodring, 1970 † - (TEREBRIDAE) (FOSSIL)
- dichesthemena, Cernuella dichesthemena R. Sturany, 1902 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- Dichostasia, Genus Dichostasia E.L. Yochelson, 1956 † (LIOTIIDAE) (FOSSIL)
- Dichotochlamys, Genus Dichotochlamys Beu & Darragh, 2001 † (PECTINIDAE) (FOSSIL)
- dichotoma, Arca dichotoma G.P. Deshayes in L. Maillard, 1863 - syn of: Vitracar sulcata (J.B.P.A. Lamarck, 1819) - (ARCIDAE)
- dichotoma, Barbatia dichotoma G.P. Deshayes in L. Maillard, 1863 - syn of: Vitracar sulcata (J.B.P.A. Lamarck, 1819) - (ARCIDAE)
- dichotoma, Eristavia dichotoma (Eristavi, 1955 †) - (HETEROCERATIDAE) (FOSSIL)
- dichotoma, Tenuilamellotis dichotoma Horvath, 1966 † - (LAMELLOTIDAE) (FOSSIL)
- dichotoma, Brachidontes dichotoma J.J.F. Whiteaves, 1885 † - (MYTILIDAE) (FOSSIL)
- dichotoma, Pseudogarantiana dichotoma Bentz, 1928 † - (PARKINSONIIDAE) (FOSSIL)
- dichotoma, Asaphis dichotoma H.E. Anton, 1838 - syn of: Asaphis violascens (P. Forsskål in C. Niebuhr, 1775) - (PSAMMOBIIDAE)
- dichotoma, Strigilla dichotoma R.A. Philippi, 1846 - (TELLINIDAE)
- dichotoma gratiosa, Mabellarca dichotoma gratiosa H. Lynge, 1909 - syn of: Mabellarca dautzenbergi (Lamy, 1907) - (ARCIDAE)
- dichotoma gratiosa, Arca dichotoma gratiosa H. Lynge, 1909 - syn of: Mabellarca dautzenbergi (Lamy, 1907) - (ARCIDAE)
- dichotomalis, Dichotochlamys dichotomalis (R. Tate, 1886 †) - (PECTINIDAE) (FOSSIL)
- Dichotomites, Genus Dichotomites Koenen , 1909 † (POLYPTYCHITIDAE) (FOSSIL)
- Dichotomoceras, Subgenus Perisphinctes (Dichotomoceras) Quenstedt, 1846 † (PERISPHINCTIDAE) (FOSSIL)
- Dichotomosphinctes, Subgenus Perisphinctes (Dichotomosphinctes) Buckman, 1926 † (PERISPHINCTIDAE) (FOSSIL)
- dichotomum, Pseudocrioceras dichotomum (Rouchadze, 1933 †) - (ANCYLOCERATIDAE) (FOSSIL)
- dichotomum, Colchidites dichotomum Eristavi, 1955 † - syn of: Eristavia dichotoma (Eristavi, 1955 †) - (ANCYLOCERATIDAE) (FOSSIL)
- dichotomum, Penicillus dichotomum J.C. Chenu, 1842 - syn of: Verpa penis (C. Linnaeus, 1758) - (PENICILLIDAE)
- dichotomum, Brechites dichotomum J.C. Chenu, 1843 - syn of: Verpa penis (C. Linnaeus, 1758) - (PENICILLIDAE)
- dichotomum, Trachyceras dichotomum (Münster, 1841 †) - (TRACHYCERATIDAE) (FOSSIL)
- dichotomus, Ceratites dichotomus Münster, 1841 † - syn of: Trachyceras dichotomum (Münster, 1841 †) - (CERATITIDAE) (FOSSIL)
- dichotomus, Brechites dichotomus J.C. Chenu, 1843 - syn of: Verpa penis (C. Linnaeus, 1758) - (PENICILLIDAE)
- dichotomus, Hollisites dichotomus Imlay, 1960 † - (POLYPTYCHITIDAE) (FOSSIL)
- dichotomus, Sibirites dichotomus L. Waagen, 1895 † - (SIBIRITIDAE) (FOSSIL)
- dichroa, Phaedusa dichroa A.R.J.B. Bavay & P. Dautzenberg, 1899 - (CLAUSILIIDAE)
- dichroa, Temesa dichroa F. Haas, 1929 - (CLAUSILIIDAE)
- dichroa, Mitrella dichroa (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- dichroa, Columbella dichroa G.B. I Sowerby, 1844 - syn of: Mitrella dichroa (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- dichroa, Pusia dichroa A. Adams & L.A. Reeve, 1850 - syn of: Pusia luculentum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- dichroa, Arinia dichroa O.F. von Möllendorff, 1895 - (DIPLOMMATINIDAE)
- dichroa, Pleuropoma dichroa O.F. von Möllendorff - (HELICINIDAE)
- dichroa, Mitra dichroa A. Adams & L.A. Reeve, 1850 - syn of: Pusia luculentum (L.A. Reeve, 1845) - (MITRIDAE)
- dichroa, Lithophaga dichroa T. Iredale, 1939 - syn of: Leiosolenus nasuta (R.A. Philippi, 1846) - (MYTILIDAE)
- dichroa, Talochlamys dichroa (H.H. Suter, 1909) - (PECTINIDAE)
- dichroa, Abbottella dichroa G.T. Watters, 2013 - (POMATIIDAE)
- dichroa, Carinodrillia dichroa H.A. Pilsbry & H.N. Lowe, 1932 - (PSEUDOMELATOMIDAE)
- dichroa duporti, Phaedusa dichroa duporti A.R.J.B. Bavay & P. Dautzenberg, 1915 - (CLAUSILIIDAE)
- dichroma, Amastra gulickiana dichroma C.M. Cooke, 1933 - (AMASTRIDAE)
- dichroma, Parvanachis dichroma M. De Maintenon, 2014 - (COLUMBELLIDAE)
- dichroma, Buchema dichroma R.N. Kilburn, 1988 - (HORAICLAVIDAE)
- dichroma, Mitra dichroma A. Adams & L.A. Reeve, 1850 - syn of: Pusia luculentum (L.A. Reeve, 1845) - (MITRIDAE)
- dichroma, Philbertia dichroma R. Sturany, 1903 - syn of: Pseudodaphnella barnardi (J.W. Brazier, 1876) - (RAPHITOMIDAE)
- dichromatica, Hemiplecta dichromatica L.J. Morlet, 1889 - (ARIOPHANTIDAE)
- dichromis, Halgerda dichromis S.J. Fahey & T.M. Gosliner, 1999 - (DISCODORIDIDAE)
- dichroum, Cerithium dichroum J.C. Melvill & R. Standen, 1895 - syn of: Cerithium zebrum L.C. Kiener, 1841 - (CERITHIIDAE)
- dichrous, Morula dichrous (C.M. Tapparone-Canefri, 1880) - (MURICIDAE)
- dichrous, Habromorula dichrous (C.M. Tapparone-Canefri, 1880) - syn of: Morula dichrous (C.M. Tapparone-Canefri, 1880) - (MURICIDAE)
- dichrozona, Fruticicola dichrozona E.C. Von Martens, 1885 - (BRADYBAENIDAE)
- dichtli, Melanopsis dichtli Handmann, 1882 † - (MELANOPSIDAE) (FOSSIL)
- Dicides, syn of: Genus Dischides J.G. Jeffreys, 1867 (GADILIDAE)
- dicifera, Cylichna dicifera A. von Koenen, 1885 † - (CYLICHNIDAE) (FOSSIL)
- dicipiens, Planorbis dicipiens C.B. Adams, 1849 - syn of: Biomphalaria havanensis (L. Pfeiffer, 1839) - (PLANORBIDAE)
- Dickdellia, Genus Dickdellia A. Warén & S. Hain, 1996 (ZEROTULIDAE)
- dickersoni, Aturia dickersoni H.G. Schenck, 1931 † - (ATURIIDAE) (FOSSIL)
- dickersoni, Cerion dickersoni H.G. Richards, 1935 - (CERIONIDAE)
- dickersoni, Scalina dickersoni J.W. Durham, 1937 † - (EPITONIIDAE) (FOSSIL)
- dickersoni, Sagenites dickersoni Smith, 1927 † - (HALORITIDAE) (FOSSIL)
- dickersoni, Arenomya dickersoni Clark † - (MYIDAE) (FOSSIL)
- dickersoni, Pecten dickersoni Wagner & Schilling, 1923 † - (PECTINIDAE) (FOSSIL)
- dickersoni, Exilia dickersoni C.S. Weaver, 1912 † - (PTYCHATRACTIDAE) (FOSSIL)
- dickersoni, Turritella dickersoni Woods, in Bosworth, 1922 † - (TURRITELLIDAE) (FOSSIL)
- Dickersonia, Genus Dickersonia Imlay, 1942 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- dickhauti, Helix dickhauti W. Kobelt, 1903 - (HELICIDAE)
- dickinianum, Ancylus dickinianum L. Benoit, 1882 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- Dickinsartella, Genus Dickinsartella Larghi, 2005 † (CYRTODONTIDAE) (FOSSIL)
- dickinsi, Westralospira dickinsi Cook & al., 2003 † - (GOSSELETINIDAE) (FOSSIL)
- dickinsi, Kolymia dickinsi C.O. Waterhouse, 1979 † - (KOLYMIIDAE) (FOSSIL)
- dickinsi, Parallelodon dickinsi C.O. Waterhouse, 1980 † - (PARALLELODONTIDAE) (FOSSIL)
- dickinsi, Neoplatyteichum dickinsi P.A. Maxwell, 1964 † - (PLEUROTOMARIIDAE) (FOSSIL)
- dickinsi, Glendella dickinsi Runnegar, 1970 † - (PTERIIDA (UNASSIGNED)) (FOSSIL)
- dickinsi, Ptychomphalina dickinsi Swart, 1998 † - (PTYCHOMPHALIDAE) (FOSSIL)
- dickinsi, Apoptopegma dickinsi Pojeta & al., 1977 † - (RIBEIRIIDAE) (FOSSIL)
- Dickinsiella, Genus Dickinsiella † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- dickinsoni, Elimia dickinsoni (W.J. Clench & H. Turner, 1956) - (PLEUROCERIDAE)
- dickinsoni, Paradiscamphiceras dickinsoni Taylor, 1988 † - (PSILOCERATIDAE) (FOSSIL)
- dickkilburni, Lophiotoma dickkilburni B.M. Olivera, 2004 - (TURRIDAE)
- dicksae, Lepidochitona dicksae B.I. Sirenko & B. Hayes, 1999 - (LEPIDOCHITONIDAE)
- dicksoni, Engina dicksoni E.J. Petuch, 2013 - (BUCCINIDAE)
- dicksoni, Mitromica dicksoni G. Rosenberg & R. Salisbury, 2003 - (COSTELLARIIDAE)
- Dicoelites, Genus Dicoelites Boehm, 1906 † (DICOELITIDAE) (FOSSIL)
- DICOELITIDAE Sachs & Naljaeva, 1967 † - Family (CEPHALOPODA-COLEOIDEA [Subclass]-BELEMNITIDA [Order]) (FOSSIL)
- dicoelobicus, Paedophoropus dicoelobicus A. Ivanov, 1933 - (EULIMIDAE)
- dicoelobius, Paedophorus dicoelobius A. Ivanov, 1933 - syn of: Paedophoropus dicoelobicus A. Ivanov, 1933 - (EULIMIDAE)
- dicoelus, Belemnites dicoelus Rothpletz, 1892 † - (BELEMNITELLIDAE) (FOSSIL)
- dicofania, Tindaria dicofania W.H. Dall, 1916 - syn of: Tindaria kennerlyi W.H. Dall, 1916 - (TINDARIIDAE)
- dicomata, Zafrona dicomata (W.H. Dall, 1889) - (COLUMBELLIDAE)
- Diconoficus, Subgenus Ficus (Diconoficus) Covacevich & Frassinnetti, 1983 † (FICIDAE) (FOSSIL)
- Diconomorpha, Genus Diconomorpha Wenz, 1943 † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- diconus, Cythara diconus O. Böttger, 1895 - (MANGELIIDAE)
- dicosmoides, Neritaria dicosmoides F. Haas, 1953 † - (NERITARIIDAE) (FOSSIL)
- Dicosmos, Genus Dicosmos Kittl, 1894 † (NATICOPSIDAE) (FOSSIL)
- Dicostella, Genus Dicostella Busnardo, Enay & Pitre, 1966 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Dicranodesma, Subgenus Thecodonta (Dicranodesma) Glenn, 1904 † (MONTACUTIDAE) (FOSSIL)
- Dicranodonta, Genus Dicranodonta Woods, 1899 † (CUCULLAEIDAE) (FOSSIL)
- dicraspedia, Ennea dicraspedia O.F. von Möllendorff, 1898 - (STREPTAXIDAE)
- DICRICOCONIDAE Farsan, 1994 † - Family (TENTACULITA-CHONIOCONARIDA [Subclass]-TROMPETOCONARIDA [Superorder]-VOLYNITIDA [Order]) (FOSSIL)
- Dicricoconus, Genus Dicricoconus Fisher, 1962 † (DICRICOCONIDAE) (FOSSIL)
- Dicriconconus, Genus Dicriconconus † (TENTACULITIDA (UNASSIGNED)) (FOSSIL)
- dicriota, Paxitropis dicriota R.L. Squires & Saul, 2005 † - (CAPULIDAE) (FOSSIL)
- Dicrista, Genus Dicrista F.G. Thompson, 1969 (NEOCYCLOTIDAE)
- dicroa, Teredo dicroa G.F. Roch, 1929 - syn of: Lyrodus takanoshimensis (G.F. Roch, 1929) - (TEREDINIDAE)
- Dicroloma, Genus Dicroloma Gabb, 1868 † (APORRHAIDAE) (FOSSIL)
- dicrous, Calliotropis dicrous C. Vilvens, 2007 - (CALLIOTROPIDAE)
- dictaea, Rothifruticicola dictaea (E.C. Von Martens, 1889) - (HYGROMIIDAE)
- dictator, Fusiconus dictator (J.C. Melvill, 1898) - (CONIDAE)
- dictator, Fumiconus dictator (J.C. Melvill, 1898) - syn of: Fusiconus dictator (J.C. Melvill, 1898) - (CONIDAE)
- dictophora, Alvania dictophora (R.A. Philippi, 1844) - syn of: Alvania dictyophora (R.A. Philippi, 1844) - (RISSOIDAE)
- dictua, Mitrella dictua (J.E. Tenison-Woods, 1879) - (COLUMBELLIDAE)
- dictua, Chione dictua R. Tate, 1887 † - (VENERIDAE) (FOSSIL)
- dictua, Ericusa fulgetrum dictua J.C. Verco, 1909 - (VOLUTIDAE)
- dictya, Chromodoris dictya Er. Marcus & Ev. Marcus, 1970 - (CHROMODORIDIDAE)
- dictya, Emarginula dictya J.H. McLean, 1970 - (FISSURELLIDAE)
- Dictyabyssia, syn of: Genus Caymanabyssia L.I. Moskalev, 1976 (CAYMANABYSSIIDAE)
- Dictydoris, syn of: Genus Halgerda L.S.R. Bergh, 1880 (DISCODORIDIDAE)
- dictyella, Canaliscala dictyella A.E.M. Cossmann, 1903 † - (POTAMIDIDAE) (FOSSIL)
- dictynna, Decipifus dictynna (W.H. Dall, 1919) - (COLUMBELLIDAE)
- dictynna, Philbertia dictynna W.H. Dall, 1919 - syn of: Decipifus dictynna (W.H. Dall, 1919) - (RAPHITOMIDAE)
- Dictyobembix, Genus Dictyobembix Tyler , 1965 † (GOSSELETINIDAE) (FOSSIL)
- Dictyoceras, Genus Dictyoceras Eichwald, 1860 † (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- Dictyoconites, Genus Dictyoconites von Mojsisovics, 1902 † (AULACOCERATIDAE) (FOSSIL)
- dictyodes, Pararhytida dictyodes (L. Pfeiffer, 1847) - (CHAROPIDAE)
- dictyodes dictyonina, Pararhytida dictyodes dictyonina (F.M. Euthyme) - (CHAROPIDAE)
- Dictyodoris, Genus Dictyodoris L.S.R. Bergh, 1880 (DISCODORIDIDAE)
- Dictyoglessula, Subgenus Subulona (Dictyoglessula) H.A. Pilsbry, 1919 (SUBULINIDAE)
- dictyola, Antillophos dictyola (J. Gardner, 1944 †) - (NASSARIIDAE) (FOSSIL)
- dictyola, Nassarius dictyola J. Gardner, 1944 † - syn of: Antillophos dictyola (J. Gardner, 1944 †) - (NASSARIIDAE) (FOSSIL)
- dictyonema, Ambozone dictyonema Batten, 1989 † - (TURBINIDAE) (FOSSIL)
- dictyonina, Helicostyla sarcinosa dictyonina O.F. von Möllendorff, 1898 - (BRADYBAENIDAE)
- dictyonina, Pararhytida dictyodes dictyonina (F.M. Euthyme) - (CHAROPIDAE)
- dictyophora, Micromelania dictyophora Š. Brusina, 1897 † - (HYDROBIIDAE) (FOSSIL)
- dictyophora, Oenopota dictyophora P. Bouchet & A. Warén, 1980 - (MANGELIIDAE)
- dictyophora, Alvania dictyophora (R.A. Philippi, 1844) - (RISSOIDAE)
- Dictyoptychus, Genus Dictyoptychus Douvillé, 1905 † (TRECHMANNELLIDAE) (FOSSIL)
- Dictyoropa, Genus Dictyoropa Shea, Colgan & Stanisic, 2012 (CHAROPIDAE)
- dictyota, Discohelix dictyota Wendt, 1968 † - (DISCOHELICIDAE) (FOSSIL)
- dictyota, Liracraea dictyota (F.W. Hutton, 1885 †) - (MANGELIIDAE) (FOSSIL)
- dictyota, Lusitanops dictyota (A.V. Sysoev, 1997) - (RAPHITOMIDAE)
- dictyota, Clinuropsis dictyota (A.V. Sysoev, 1997) - syn of: Lusitanops dictyota (A.V. Sysoev, 1997) - (RAPHITOMIDAE)
- dictyotis, Fusinus dictyotis R. Tate, 1888 † - (FASCIOLARIIDAE) (FOSSIL)
- Dictyotomaria, Genus Dictyotomaria Knight , 1945 † (GOSSELETINIDAE) (FOSSIL)
- dictys, Dyscritoceras dictys (Billings, 1865 †) - (BASSLEROCERATIDAE) (FOSSIL)
- Dictys, Genus Dictys Khalfin, 1950 † (PROKOPIEVSKIIDAE) (FOSSIL)
- dictyum, Diedrorynchus dictyum Hoare & Peck, 2005 † - (BRANSONIIDAE) (FOSSIL)
- Dicyathifer, Genus Dicyathifer T. Iredale, 1932 (TEREDINIDAE)
- Didacna, Genus Didacna K.E.I. von Eichwald, 1838 (CARDIIDAE)
- didactyla, Spinigera didactyla Hudleston, 1888 † - syn of: Diempterus didactylus W.H. Hudleston, 1888 † - (APORRHAIDAE) (FOSSIL)
- didactylus, Diempterus didactylus W.H. Hudleston, 1888 † - (SPINILOMATIDAE) (FOSSIL)
- Didacus, Genus Didacus Delicado, Machordom & Ramos, 2015 (HYDROBIIDAE)
- didayana, Duvalia didayana (A.V.M.D. D'Orbigny, 1842 †) - (DUVALIIDAE) (FOSSIL)
- didayana, Nicklesia didayana (A.V.M.D. D'Orbigny, 1841 †) - (PULCHELLIIDAE) (FOSSIL)
- didayana, Subpulchellia didayana A.V.M.D. D'Orbigny, 1841 † - syn of: Nicklesia didayana (A.V.M.D. D'Orbigny, 1841 †) - (PULCHELLIIDAE) (FOSSIL)
- didayanus, Belemnites didayanus A.V.M.D. D'Orbigny, 1842 † - syn of: Duvalia didayana (A.V.M.D. D'Orbigny, 1842 †) - (BELEMNITELLIDAE) (FOSSIL)
- didayanus, Hibolites didayanus A.V.M.D. D'Orbigny, 1842 † - syn of: Duvalia didayana (A.V.M.D. D'Orbigny, 1842 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- Dideroceras, Genus Dideroceras Flower , 1950 † (ENDOCERATIDAE) (FOSSIL)
- diderrichi, Hercoglossa diderrichi Vincent, 1913 † - (HERCOGLOSSIDAE) (FOSSIL)
- diderrichi, Clinuropsis diderrichi A.W.B. Powell, 1966 † - (RAPHITOMIDAE) (FOSSIL)
- Didianema, Genus Didianema W.P. Woodring, 1928 (SKENEIDAE)
- didieri, Corbicula didieri P.M. Pallary, 1909 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- didieri, Dentimargo didieri J. Espinosa & J.A. Ortea, 2013 - (MARGINELLIDAE)
- didieri, Physopsis didieri A. de Rochebrune & J. Germain, 1904 - (PLANORBIDAE)
- Didimacar, Genus Didimacar T. Iredale, 1939 (NOETIIDAE)
- didmyoaurise, Liroceras didmyoaurise F.S. Xu, 1977 † - (LIROCERATIDAE) (FOSSIL)
- dido, Japonia dido (H.H. Godwin-Austen, 1889) - (CYCLOPHORIDAE)
- dido, Inodrillia dido P. Bartsch, 1943 - (HORAICLAVIDAE)
- Didonta, syn of: Genus Hiatella L.A.G. d'A. Bosc, 1801 (HIATELLIDAE)
- Didontoglossa, syn of: Genus Acteocina J.E. Gray, 1847 (ACTEOCINIDAE)
- didontus, Pseudohalorites didontus W.C. Zhou, 1985 † - (PSEUDOHALORITIDAE) (FOSSIL)
- diducta, Philonesia turgida diducta H.B. Baker, 1940 - (EUCONULIDAE)
- diductacostae, Pyrgulina diductacostae Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- diductus, Oxychilus diductus (C.A. Westerlund, 1886) - (OXYCHILIDAE)
- didyma, Aclis didyma E.A. Smith, 1890 - (ACLIDIDAE)
- didyma, Bathytoma didyma R.B. Watson, 1881 - syn of: Bathytoma mitrella (W.H. Dall, 1881) - (BORSONIIDAE)
- didyma, Torellia didyma P. Bouchet & A. Warén, 1993 - (CAPULIDAE)
- didyma, Gemmuloborsonia didyma A.V. Sysoev & P. Bouchet, 1996 - (CLAVATULIDAE)
- didyma, Austromitra didyma W.H. Turton, 1932 - syn of: Austromitra bathyraphe (G.B. III Sowerby, 1900) - (COSTELLARIIDAE)
- didyma, Cardiomya didyma (R.B. Hinds, 1843) - (CUSPIDARIIDAE)
- didyma, Trachypollia didyma J.S. Schwengel, 1943 - syn of: Trachypollia turricula (H. von Maltzan, 1884) - (MURICIDAE)
- didyma, Neverita didyma (P.F. Röding, 1798) - (NATICIDAE)
- didyma, Polinices didyma P.F. Röding, 1798 - syn of: Neverita didyma (P.F. Röding, 1798) - (NATICIDAE)
- didyma, Glossaulax didyma P.F. Röding, 1798 - syn of: Neverita didyma (P.F. Röding, 1798) - (NATICIDAE)
- didyma, Natica didyma P.F. Röding, 1798 - syn of: Neverita didyma (P.F. Röding, 1798) - (NATICIDAE)
- didyma, Albula didyma P.F. Röding, 1798 - syn of: Neverita didyma (P.F. Röding, 1798) - (NATICIDAE)
- didyma, Simulamerelina didyma (R.B. Watson, 1886) - (RISSOIDAE)
- didyma ampla, Neverita didyma ampla (R.A. Philippi, 1849) - (NATICIDAE)
- didyma ampla, Glossaulax didyma ampla (R.A. Philippi, 1849) - syn of: Neverita didyma ampla (R.A. Philippi, 1849) - (NATICIDAE)
- didyma ampla, Neverita didyma ampla R.A. Philippi, 1848 - syn of: Neverita didyma ampla (R.A. Philippi, 1849) - (NATICIDAE)
- didyma coticazae, Neverita didyma coticazae J. Makiyama, 1926 - (NATICIDAE)
- didyma hayashii, Neverita didyma hayashii (M. Azuma, 1961) - (NATICIDAE)
- didyma hayashii, Neverita didyma hayashii M. Azuma, 1961 - syn of: Neverita didyma hayashii (M. Azuma, 1961) - (NATICIDAE)
- didyma hayashii, Glossaulax didyma hayashii (M. Azuma, 1961) - syn of: Neverita didyma hayashii (M. Azuma, 1961) - (NATICIDAE)
- didyma hosoyai, Neverita didyma hosoyai (T. Kira, 1959) - (NATICIDAE)
- Didymalgia, Genus Didymalgia Cook, 1997 † (ORIOSTOMATIDAE) (FOSSIL)
- Didymaspis, Genus Didymaspis Lankester , 1867 † (CEPHALASPIDAE) (FOSSIL)
- Didymites, Genus Didymites von Mojsisovics, 1875 † (DIDYMITIDAE) (FOSSIL)
- DIDYMITIDAE Haug, 1894 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-TROPITOIDEA [Superfamily]) (FOSSIL)
- Didymoceras, Genus Didymoceras Hyatt , 1900 † (NOSTOCERATIDAE) (FOSSIL)
- Didymoceratoides, syn of: Genus Didymoceras Hyatt , 1900 † (NOSTOCERATIDAE) (FOSSIL)
- Didymodon, syn of: Genus Valfinia Cox, 1958 † (TROCHOTOMIDAE) (FOSSIL)
- didymodus, Gastrocopta didymodus (Sandberger, 1858) † - (GASTROCOPTIDAE) (FOSSIL)
- didymopsis, Cernuella didymopsis P. Fagot in É.A.A. Locard, 1882 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- didymorhyncha, Zoila didymorhyncha T.A. Darragh, 2011 † - (CYPRAEIDAE) (FOSSIL)
- didymoscripta, Streblochondria didymoscripta C.C. Lu, 1986 † - (STREBLOCHONDRIIDAE) (FOSSIL)
- Didymotis, Genus Didymotis Gerhardt, 1897 † (POSIDONIIDAE) (FOSSIL)
- didymum, Dentalium didymum R.B. Watson, 1879 - syn of: Episiphon didymum (R.B. Watson, 1879) - (DENTALIIDAE)
- didymum, Fustiaria didymum R.B. Watson, 1879 - syn of: Episiphon didymum (R.B. Watson, 1879) - (FUSTIARIIDAE)
- didymum, Episiphon didymum (R.B. Watson, 1879) - (GADILINIDAE)
- didymum, Laevidentalium didymum R.B. Watson, 1879 - syn of: Episiphon didymum (R.B. Watson, 1879) - (LAEVIDENTALIIDAE)
- didymum, Eulimastoma didymum (A.E. Verrill & K.J. Bush, 1900) - (PYRAMIDELLIDAE)
- didymus, Arcestes didymus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- didymus, Murex didymus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- didynamus, Octopus didynamus C.S. Rafinesque, 1814 - syn of: Callistoctopus macropus (A. Risso, 1826) - (OCTOPODIDAE)
- diecki, Pupilla diecki P.V. Gredler, 1889 - syn of: Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- dieckmanni, Karaftohelix dieckmanni (A. Mousson, 1887) - (BRADYBAENIDAE)
- diederichseni, Teredora diederichseni G.F. Roch, 1929 - syn of: Teredora princesae (P.B. Sivickis, 1928) - (TEREDINIDAE)
- Diedrorynchus, Genus Diedrorynchus Hoare & Peck, 2005 † (BRANSONIIDAE) (FOSSIL)
- dieffenbachi, Chlamys dieffenbachi L.A. Reeve, 1853 - syn of: Talochlamys zelandiae (J.E. Gray, 1843) - (PECTINIDAE)
- dieffenbachii, Venus dieffenbachii J.E. Gray in J.K.E. Dieffenbach, 1843 - syn of: Austrovenus stutchburyi (W. Wood, 1828) - (VENERIDAE)
- diegelae, Leptoconus diegelae E.J. Petuch, 1994 - syn of: Gradiconus largillierti (L.C. Kiener, 1847) - (CONIDAE)
- diegelae, Siphocypraea diegelae E.J. Petuch, 1994 † - (CYPRAEIDAE) (FOSSIL)
- diegelae, Heilprinia diegelae E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- diegelae, Terebraspira diegelae E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- diegelae, Melongena diegelae E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- diegelae, Vokesimurex diegelae E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- diegelae, Lindoliva diegelae E.J. Petuch, 1988 † - (OLIVIDAE) (FOSSIL)
- diegelae, Cerithidea diegelae E.J. Petuch, 1994 † - (POTAMIDIDAE) (FOSSIL)
- diegelae, Lobatus diegelae E.J. Petuch, 1991 † - (STROMBIDAE) (FOSSIL)
- diegense, Epitonium diegense W.H. Dall, 1917 - syn of: Epitonium californicum W.H. Dall, 1917 - (EPITONIIDAE)
- diegensis, Arene diegensis J.H. McLean, 1964 - (ARENEIDAE)
- diegensis, Bathyphytophilus diegensis G. Haszprunar & J.H. McLean, 1996 - (BATHYPHYTOPHILIDAE)
- diegensis, Borsonella diegensis (W.H. Dall, 1908) - (BORSONIIDAE)
- diegensis, Cerithiopsis diegensis P. Bartsch, 1911 - syn of: Cerithiopsida diegensis (P. Bartsch, 1911) - (CERITHIOPSIDAE)
- diegensis, Cylichna diegensis (W.H. Dall, 1919) - (CYLICHNIDAE)
- diegensis, Limopsis diegensis W.H. Dall, 1908 - syn of: Limopsis panamensis W.H. Dall, 1902 - (LIMOPSIDAE)
- diegensis, Oenopota diegensis W.H. Dall, 1919 - syn of: Curtitoma trevelliana (W. Turton, 1834) - (MANGELIIDAE)
- diegensis, Adula diegensis (W.H. Dall, 1911) - (MYTILIDAE)
- diegensis, Mytilus edulis diegensis W.R. Coe, 1945 - (MYTILIDAE)
- diegensis, Cerithiopsida diegensis (P. Bartsch, 1911) - (NEWTONIELLIDAE)
- diegensis, Orbitestella diegensis P. Bartsch, 1907 - syn of: Vitrinorbis diegensis (P. Bartsch, 1907) - (ORBITESTELLIDAE)
- diegensis, Leopecten diegensis (W.H. Dall, 1898) - (PECTINIDAE)
- diegensis, Euvola diegensis W.H. Dall, 1898 - syn of: Leopecten diegensis (W.H. Dall, 1898) - (PECTINIDAE)
- diegensis, Turbonilla diegensis W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- diegensis, Rossia pacifica diegensis S.S. Berry, 1912 - (SEPIOLIDAE)
- diegensis, Lyrodus diegensis P. Bartsch, 1916 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- diegensis, Asthenothaerus diegensis (W.H. Dall, 1915) - (THRACIIDAE)
- diegensis, Vitrinorbis diegensis (P. Bartsch, 1907) - (TORNIDAE)
- diegoana, Calyptraea diegoana T.A. Conrad, 1857 † - (CALYPTRAEIDAE) (FOSSIL)
- diegoana, Aligena diegoana L.G. Hertlein & J. Grant, 1972 - (LASAEIDAE)
- diegoensis, Callistochiton decoratus diegoensis K.H.J. Thiele, 1910 - (CALLISTOPLACIDAE)
- diegoensis, Cyathopoma diegoensis E. Fischer-Piette, Ch.P. Blanc & D. Vukadinovic, 1974 - (CYCLOPHORIDAE)
- diegoensis, Haliotis diegoensis C.R. Orcutt, 1900 - syn of: Haliotis corrugata W. Wood, 1828 - (HALIOTIDAE)
- diegoensis, Claibornites diegoensis (R.E. Dickerson, 1916 †) - (LUCINIDAE) (FOSSIL)
- diegoensis, Tropidophora diegoensis E. Fischer-Piette, 1949 - (POMATIIDAE)
- diegoensis, Solena diegoensis (Gabb 1864) † - (SOLENIDAE) (FOSSIL)
- diegoensis, Lamellaria diegoensis W.H. Dall, 1885 - (VELUTINIDAE)
- diegoensis, Nearctula rowellii diegoensis (V. Sterki, 1890) - (VERTIGINIDAE)
- diegoensis, Zonites diegoensis H. Hemphill, 1892 - (ZONITIDAE)
- diegoi, Africonus diegoi T. Cossignani, 2014 - (CONIDAE)
- diegoi, Adiverticula diegoi (M.T. Neiber, R. Vega-Luz & Koenemann, 2011) - (HELICIDAE)
- diegoi, Hypophylloceras thetys diegoi (Boule & al., 1906 †) - (PHYLLOCERATIDAE) (FOSSIL)
- Diegus, Genus Diegus Delicado, Machordom & Ramos, 2016 (HYDROBIIDAE)
- dielasma, Warrana dielasma C.F. Laseron, 1953 - (CONDYLOCARDIIDAE)
- diemenensis, Aviculopecten diemenensis Johnston, 1887 † - (AVICULOPECTINIDAE) (FOSSIL)
- diemenensis, Zeacumantus diemenensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (BATILLARIIDAE)
- diemenensis, Cerithium diemenensis J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Zeacumantus diemenensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (CERITHIIDAE)
- diemenensis, Thryasona diemenensis (J.C. Cox, 1868) - (CHAROPIDAE)
- diemenensis, Monodilepas diemenensis H.J. Finlay, 1930 - (FISSURELLIDAE)
- diemenensis, Helix diemenensis J.C. Cox, 1868 - syn of: Thryasona diemenensis (J.C. Cox, 1868) - (HELICIDAE)
- diemenensis, Austrolittorina diemenensis G. Nevill, 1885 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemenensis, Austrolittorina diemenensis J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemenensis, Littorina diemenensis J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemenensis, Scutellastra diemenensis R.A. Philippi, 1848 - syn of: Scutellastra peronii (H.M.D. de Blainville, 1825) - (PATELLIDAE)
- diemenensis, Cerithidea diemenensis (J.F. Gmelin, 1791) - (POTAMIDIDAE)
- diemenensis, Rissoa diemenensis W.F. Petterd, 1884 - syn of: Pisinna olivacea (G.R. von Frauenfeld, 1867) - (RISSOIDAE)
- diemenensis, Siphonaria diemenensis J.R.C. Quoy & J.P. Gaimard, 1833 - (SIPHONARIIDAE)
- diemenensis, Tellina diemenensis G.P. Deshayes, 1855 - syn of: Tellina deltoidalis J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- diemenensis, Callista diemenensis (S.C.T. Hanley, 1844) - (VENERIDAE)
- diemenensis pseudolaevis, Littorina diemenensis pseudolaevis G. Nevill, 1885 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemense, Fluvidona diemense G.R. von Frauenfeld, 1865 - syn of: Austropyrgus diemensis (G.R. von Frauenfeld, 1865) - (HYDROBIIDAE)
- diemensis, Austropyrgus diemensis (G.R. von Frauenfeld, 1865) - (HYDROBIIDAE)
- diemensis, Austrolittorina diemensis R.A. Philippi, 1847 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemensis, Littorina diemensis R.A. Philippi, 1847 - syn of: Austrolittorina unifasciata (J.E. Gray, 1826) - (LITTORINIDAE)
- diemensis, Paphies diemensis J.R.C. Quoy & J.P. Gaimard, 1835 - syn of: Atactodea erycinaea (J.B.P.A. Lamarck, 1818) - (MESODESMATIDAE)
- diemensis, Mesodesma diemensis J.R.C. Quoy & J.P. Gaimard, 1835 - syn of: Atactodea erycinaea (J.B.P.A. Lamarck, 1818) - (MESODESMATIDAE)
- Diempterus, Genus Diempterus Piette, 1876 † (SPINILOMATIDAE) (FOSSIL)
- dieneri, Marathonites dieneri (Smith 1927 †) - (ADRIANITIDAE) (FOSSIL)
- dieneri, Dictyoconites dieneri Mojsisovics, 1902 † - (AULACOCERATIDAE) (FOSSIL)
- dieneri, Hollandites dieneri Tozer, 1994 † - (BEYRICHITIDAE) (FOSSIL)
- dieneri, Dieneroceras dieneri (A. Hyatt & Smith, 1905 †) - (COLUMBITIDAE) (FOSSIL)
- dieneri, Waagenoceras dieneri Böse, 1919 † - (CYCLOLOBIDAE) (FOSSIL)
- dieneri, Ophiceras dieneri A. Hyatt & Smith, 1905 † - syn of: Dieneroceras dieneri (A. Hyatt & Smith, 1905 †) - (DIENEROCERATIDAE) (FOSSIL)
- dieneri, Stoyanowites dieneri (Stoyanow, 1910 †) - (DZHULFITIDAE) (FOSSIL)
- dieneri, Anaxenaspis dieneri Tozer, 1994 † - (FLEMINGITIDAE) (FOSSIL)
- dieneri, Japonites dieneri Martelli, 1904 † - (GYMNITIDAE) (FOSSIL)
- dieneri, Subradioceras dieneri (C.O. Waterhouse, 1996 †) - (GYRONITIDAE) (FOSSIL)
- dieneri, Palaeolima dieneri Frech, 1911 † - (LIMIDAE) (FOSSIL)
- dieneri, Carinathilda dieneri Schulbert & A. Nützel, 2013 † - (MATHILDIDAE) (FOSSIL)
- dieneri, Xenodiscus dieneri Spinosa & al., 1975 † - (MEEKOCERATIDAE) (FOSSIL)
- dieneri, Juvenites dieneri (A. Hyatt & Smith, 1905 †) - (MELAGATHICERATIDAE) (FOSSIL)
- dieneri, Liebea dieneri Vaillant-Couturier Treat, 1933 † - (MYALINIDAE) (FOSSIL)
- dieneri, Nannites dieneri A. Hyatt & Smith, 1905 † - syn of: Juvenites dieneri (A. Hyatt & Smith, 1905 †) - (NANNITIDAE) (FOSSIL)
- dieneri, Eonathorstites dieneri Tozer, 1994 † - (NATHORSTITIDAE) (FOSSIL)
- dieneri, Trigonodus dieneri (L. Waagen, 1907 †) - (PACHYCARDIIDAE) (FOSSIL)
- dieneri, Claraia dieneri Nakazawa, 1977 † - (PTERINOPECTINIDAE) (FOSSIL)
- dieneri, Alloclionites dieneri Tozer, 1994 † - (STEINMANNITIDAE) (FOSSIL)
- dieneri, Acanthodrepanites dieneri Tozer, 1994 † - (TIBETITIDAE) (FOSSIL)
- dieneri, Tropites dieneri Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- dieneri, Eophyllites dieneri (Arthaber, 1908 †) - (USSURITIDAE) (FOSSIL)
- Dieneria, Genus Dieneria Hyatt & Smith, 1905 † (KLAMATHITIDAE) (FOSSIL)
- Dieneroceras, Genus Dieneroceras Popov, 1961 † (COLUMBITIDAE) (FOSSIL)
- DIENEROCERATIDAE Kummel, 1952 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-MEEKOCERATOIDEA [Superfamily]) (FOSSIL)
- diense, Cantianiceras diense (G. Sayn, 1889 †) - (OLCOSTEPHANIDAE) (FOSSIL)
- diensis, Xerocrassa diensis (H. von Maltzan, 1883) - (HYGROMIIDAE)
- diensis, Orculella diensis E. Gittenberger & B. Hausdorf, 2004 - (ORCULIDAE)
- diensti, Glatziella diensti Schindewolf, 1937 † - (GLATZIELLIDAE) (FOSSIL)
- dientensis, Tristramia zephyrina dientensis H.A. Pilsbry, 1903 - (HELICINIDAE)
- Dientomochilus, Subgenus Rimella (Dientomochilus) Cossmann, 1904 † (RIMELLIDAE) (FOSSIL)
- dienvali, Volvaria dienvali J.B.C.P. de Raincourt, 1885 † - (ACTEONIDAE) (FOSSIL)
- diepae, Camaena diepae Thach, 2017 - (CAMAENIDAE)
- Diepenheimia, Subgenus Microcystis (Diepenheimia) H.B. Preston, 1913 (EUCONULIDAE)
- Dierama, syn of: Genus Vitrinella C.B. Adams, 1850 (TORNIDAE)
- dierckingi, Bythinella dierckingi P. Glöer & D.G. Georgiev, 2011 - (BYTHINELLIDAE)
- Dieretostoma, Genus Dieretostoma A.E.M. Cossmann, 1888 (CINGULOPSIDAE)
- dierythraeus, Callistoctopus dierythraeus (M.D. Norman, 1992) - (OCTOPODIDAE)
- dierythros, Platydoris dierythros S.J. Fahey & Á. Valdés, 2003 - (DISCODORIDIDAE)
- diespiter, Haploptychius diespiter (J.F. Mabille, 1887) - (STREPTAXIDAE)
- diespiter, Oxynaia diespiter (J.F. Mabille, 1887) - (UNIONIDAE)
- diestalmena, Chloritis diestalmena P. Dautzenberg & H. Fischer, 1908 - (CAMAENIDAE)
- Diestoceras, Genus Diestoceras Foerste, 1924 † (DIESTOCERATIDAE) (FOSSIL)
- DIESTOCERATIDAE Foerste, 1926 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ONCOCERIDA [Order]) (FOSSIL)
- diestoceroides, Westonoceras diestoceroides Flower, 1952 † - (WESTONOCERATIDAE) (FOSSIL)
- dieteri, Fusiconus dieteri (R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008) - (CONIDAE)
- dieteri, Conasprella dieteri R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008 - syn of: Fusiconus dieteri (R.G. Moolenbeek, A. Zandbergen & P. Bouchet, 2008) - (CONIDAE)
- dietleni, Megalomastoma dietleni Miller, 1907 † - (MEGALOMASTOMIDAE) (FOSSIL)
- dietli, Angulataphrus dietli J. Gründel, 2003 † - (COLLONIIDAE) (FOSSIL)
- Dietrichella, syn of: Subgenus Scurriopsis (Dietrichiella) Wenz, 1938 † (ACMAEIDAE) (FOSSIL)
- dietrichi, Ocenebra dietrichi Bohm, 1926 † - (MURICIDAE) (FOSSIL)
- dietrichi, Falcimytilus dietrichi Cox, 1965 † - (MYTILIDAE) (FOSSIL)
- dietrichi, Bizarrus dietrichi (F. Riedel, 1932 †) - (PUGNELLIDAE) (FOSSIL)
- dietrichi, Erichlangeia dietrichi (Lange, 1914) † - (RUTITRIGONIIDAE) (FOSSIL)
- Dietrichia, Genus Dietrichia Reck, 1921 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- Dietrichiella, Subgenus Scurriopsis (Dietrichiella) Wenz, 1938 † (ACMAEIDAE) (FOSSIL)
- dietzei, Labyrinthoceras dietzei Sandoval & D.M. Chandler, 2015 † - (SPHAEROCERATIDAE) (FOSSIL)
- dietzi, Buttenheimia dietzi A. Nützel & J. Gründel, 2015 † - (GORDENELLIDAE) (FOSSIL)
- dietziana, Caryocorbula dietziana Adams, 1852 - (CORBULIDAE)
- diezi, Acicula diezi K. Flach, 1891 † - syn of: Paracoryna diezi (K. Flach, 1891 †) - (ACICULIDAE) (FOSSIL)
- diezi, Agardhia diezi K. Flach, 1891 † - syn of: Paracoryna diezi (K. Flach, 1891 †) - (ARGNIDAE) (FOSSIL)
- diezi, Milax diezi Clessin, 1894 † - (MILACIDAE) (FOSSIL)
- diezi, Paracoryna diezi (K. Flach, 1891 †) - (PUPILLIDAE) (FOSSIL)
- diezi, Nisiturris diezi (A. Peñas & E. Rolán, 1997) - (PYRAMIDELLIDAE)
- Diffalaba, Genus Diffalaba T. Iredale, 1936 (LITIOPIDAE)
- Differena, Genus Differena A.A. Schileyko, 1984 (ENIDAE)
- differens, Erosaria differens F.A. Schilder, 1927 - syn of: Erosaria miliaris (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- differens, Gibberula differens (E.A. Smith, 1904) - (CYSTISCIDAE)
- differens, Onychoceras differens Wunstorf, 1907 † - (HAMMATOCERATIDAE) (FOSSIL)
- differens, Pseudogrammoceras differens Ernst, 1923 † - (HILDOCERATIDAE) (FOSSIL)
- differens, Marginella differens E.A. Smith, 1904 - syn of: Gibberula differens (E.A. Smith, 1904) - (MARGINELLIDAE)
- differens, Tomichia differens M. Connolly, 1939 - (POMATIOPSIDAE)
- differens, Cochliolepis differens F. Rubio, E. Rolán & Lee, 2011 † - (TORNIDAE) (FOSSIL)
- differens, Inella differens E. Rolán & H.G. Lee, 2008 - (TRIPHORIDAE)
- differentia, Lithopoma differentia N.E. Weisbord, 1962 - syn of: Lithopoma brevispinum (J.B.P.A. Lamarck, 1822) - (TURBINIDAE)
- Differoforis, Genus Differoforis S. Kosuge, 2008 (TRIPHORIDAE)
- differtus, Unio differtus I. Lea, 1872 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- difficialis, Ammonites difficialis A.V.M.D. D'Orbigny, 1840 † - syn of: Barremites difficilis (A.V.M.D. D'Orbigny, 1840 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- difficialis, Syndosmya difficialis (G.P. Deshayes, 1857 †) - (SEMELIDAE) (FOSSIL)
- difficile, Desmoceras difficile A.V.M.D. D'Orbigny, 1840 † - syn of: Barremites difficilis (A.V.M.D. D'Orbigny, 1840 †) - (DESMOCERATIDAE) (FOSSIL)
- difficile, Palaeozygopleura difficile (Sardeson, 1902 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- difficilis, Ammonites difficilis A.V.M.D. D'Orbigny, 1840 † - syn of: Barremites difficilis (A.V.M.D. D'Orbigny, 1840 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- difficilis, Pisinna difficilis C.J. Gabriel, 1956 - syn of: Pisinna frenchiensis (J.H. Gatliff & C.J. Gabriel, 1908) - (ANABATHRIDAE)
- difficilis, Barremites difficilis (A.V.M.D. D'Orbigny, 1840 †) - (BARREMITIDAE) (FOSSIL)
- difficilis, Microdrillia difficilis (E.A. Smith, 1879) - (BORSONIIDAE)
- difficilis, Cantharus difficilis E.A. Smith, 1913 - syn of: Prodotia iostoma (J.E. Gray, 1834) - (BUCCINIDAE)
- difficilis, Bulla vernicosa difficilis T. Habe, 1950 - (BULLIDAE)
- difficilis, Venericardia difficilis G.P. Deshayes, 1854 - syn of: Purpurocardia purpurata (G.P. Deshayes, 1854) - (CARDITIDAE)
- difficilis, Synthopsis difficilis Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- difficilis, Kaliella difficilis O.F. von Möllendorff, 1900 - (CHRONIDAE)
- difficilis, Roseniella difficilis (O. von Retowski, 1889) - (CLAUSILIIDAE)
- Difficilis, syn of: Subgenus Cochlostoma (Turritus) C.A. Westerlund, 1883 (COCHLOSTOMATIDAE)
- difficilis, Corbicula difficilis T. Prime, 1867 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- difficilis, Latirus difficilis A.E.M. Cossmann, 1897 † - (FASCIOLARIIDAE) (FOSSIL)
- difficilis, Gastrochaena difficilis G.P. Deshayes, 1855 - (GASTROCHAENIDAE)
- difficilis, Gonimyrtea galeottiana difficilis (G.P. Deshayes, 1857) † - (LUCINIDAE) (FOSSIL)
- difficilis, Mangelia difficilis É.A.A. Locard & E. Caziot, 1900 - syn of: Mangelia unifasciata (G.P. Deshayes, 1835) - (MANGELIIDAE)
- difficilis, Dentimargo difficilis C.J. Gabriel, 1962 - syn of: Dentimargo allporti (J.E. Tenison-Woods, 1876) - (MARGINELLIDAE)
- difficilis, Plethospira difficilis (R.P. Whitfield, 1890 †) - (MURCHISONIIDAE) (FOSSIL)
- difficilis, Gregariella difficilis (G.P. Deshayes in L. Maillard, 1863) - (MYTILIDAE)
- difficilis, Modiolus difficilis J.T. Kuroda & T. Habe, 1950 - syn of: Modiolus modiolus difficilis (J.T. Kuroda & T. Habe, 1950) - (MYTILIDAE)
- difficilis, Musculus difficilis G.P. Deshayes in L. Maillard, 1863 - syn of: Gregariella difficilis (G.P. Deshayes in L. Maillard, 1863) - (MYTILIDAE)
- difficilis, Modiolus modiolus difficilis (J.T. Kuroda & T. Habe, 1950) - (MYTILIDAE)
- difficilis, Eocolina difficilis (G.P. Deshayes, 1864 †) - (NEWTONIELLIDAE) (FOSSIL)
- difficilis, Forcartiella difficilis (O. Böttger, 1888) - (OXYCHILIDAE)
- difficilis, Homoeoplanulites difficilis (Buckman, 1922 †) - (PERISPHINCTIDAE) (FOSSIL)
- difficilis, Pleurotomaria difficilis R.P. Whitfield, 1890 † - syn of: Plethospira difficilis (R.P. Whitfield, 1890 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- difficilis, Gari difficilis G.P. Deshayes, 1855 - syn of: Gari elongata (J.B.P.A. Lamarck, 1818) - (PSAMMOBIIDAE)
- difficilis, Pupina difficilis C.G. Semper, 1865 - (PUPINIDAE)
- difficilis, Pyrgulina difficilis E. Saurin, 1958 - (PYRAMIDELLIDAE)
- difficilis, Odostomia defolinia difficilis W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- difficilis, Palaeocorbula difficilis Reed, 1932 † - (SANGUINOLITIDAE) (FOSSIL)
- difficilis, Palaeocorbula difficilis (Cowper Reed 1932) † - (SANGUINOLITIDAE) (FOSSIL)
- difficilis, Abra difficilis G.P. Deshayes, 1857 † - (SEMELIDAE) (FOSSIL)
- difficilis, Pisidium difficilis Pirogov & Y.I. Starobogatov in V.J. Timm, 1975 - syn of: Pisidium pirogovi - (SPHAERIIDAE)
- difficilis, Euglesa difficilis Pirogov & Y.I. Starobogatov in V.J. Timm, 1975 - syn of: Pisidium pirogovi (Y.I. Starobogatov, 1984) - (SPHAERIIDAE)
- difficilis, Shuttleworthia difficilis (J.C.H. Crosse & P.H. Fischer, 1869) - (SPIRAXIDAE)
- difficilis, Capsa difficilis G.P. Deshayes, 1855 - syn of: Gari elongata (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- difficilis, Maoricolpus difficilis H.H. Suter, 1908 - syn of: Maoricolpus roseus (J.R.C. Quoy & J.P. Gaimard, 1834) - (TURRITELLIDAE)
- difficilis, Pseudoneoptychites difficilis H.A. Leanza, 1967 † - (VASCOCERATIDAE) (FOSSIL)
- difficilis, Grateloupia difficilis (B. de Basterot, 1825 †) - (VENERIDAE) (FOSSIL)
- difficilis, Eurhomalea difficilis (A.E. Ortmann, 1899 †) - (VENERIDAE) (FOSSIL)
- difficilis, Thasiogenes difficilis F. Riedel, 1988 - (ZONITIDAE)
- difficilis, Retinella difficilis O. Böttger, 1888 - syn of: Forcartiella difficilis (O. Böttger, 1888) - (ZONITIDAE)
- difficilis batumensis, Hyalinia difficilis batumensis O. von Retowski, 1914 - syn of: Forcartiella discrepans (O. von Retowski, 1889) - (ZONITIDAE)
- difficilis discrepans, Hyalinia difficilis discrepans O. von Retowski, 1889 - syn of: Forcartiella discrepans (O. von Retowski, 1889) - (ZONITIDAE)
- difficultosa, Sagracoptis difficultosa (R. Arango, 1882) - (UROCOPTIDAE)
- diffidenter, Pyrgulina diffidenter Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- diffilata, Alaba diffilata (C.F. Laseron, 1956) - (LITIOPIDAE)
- diffissa, Pandora diffissa A. de Rochebrune & J.F. Mabille, 1889 - syn of: Pandora braziliensis G.B. II Sowerby, 1874 - (PANDORIDAE)
- diffissus, Arcestes diffissus J. Von Hauer, 1860 † - syn of: Joannites cymbiformis (Wulfen, 1793 †) - (ARCESTIDAE) (FOSSIL)
- diffissus, Joannites diffissus (J. Von Hauer, 1860 †) - (JOANNITIDAE) (FOSSIL)
- diffluxus, Sectipecten diffluxus (F.W. Hutton, 1873 †) - (PECTINIDAE) (FOSSIL)
- difforme, Brotheotrachyceras difforme (Münster, 1834 †) - (TRACHYCERATIDAE) (FOSSIL)
- difformis, Alaba difformis (C.F. Laseron, 1956) - (LITIOPIDAE)
- difformis, Hemipecten difformis N.H. Odhner, 1917 - syn of: Hemipecten forbesianus A. Adams & L.A. Reeve, 1849 - (PECTINIDAE)
- difformis, Pleuronectites difformis C. Chen, 1976 † - (PLEURONECTITIDAE) (FOSSIL)
- difformis, Terquemia difformis (Schlotheim, 1820 †) - (TERQUEMIIDAE) (FOSSIL)
- diffusa, Achatinella mustelina diffusa D.A. Welch, 1938 - (ACHATINELLIDAE)
- diffusa, Pomacea diffusa (W. Blume, 1957) - (AMPULLARIIDAE)
- diffusa, Horologica diffusa A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- diffusa, Cratena diffusa (J.J. Risbec, 1928) - (FACELINIDAE)
- diffusa, Turridrupa diffusa A.W.B. Powell, 1967 - (TURRIDAE)
- diffusa tembiae, Cratena diffusa tembiae J.J. Risbec, 1928 - (FACELINIDAE)
- diffusus, Chondrula diffusus A. Mousson, 1876 - syn of: Pseudochondrula tetrodon (L.L.G. de Mortillet, 1854) - (ENIDAE)
- Difunites, syn of: Genus Difuntites Glenister & Furnish, 1988 † (MEDLICOTTIIDAE) (FOSSIL)
- difuntense, Pseudagathiceras difuntense Miller, 1944 † - (ADRIANITIDAE) (FOSSIL)
- Difuntites, Genus Difuntites Glenister & Furnish, 1988 † (MEDLICOTTIIDAE) (FOSSIL)
- diga, Venericor diga (Gardner & E. Bowles, 1939 †) - (CARDITIDAE) (FOSSIL)
- digenes, Eulimella digenes (P. Dautzenberg & H. Fischer, 1896) - (PYRAMIDELLIDAE)
- Digenuoceras, Genus Digenuoceras Foerste, 1935 † (ONCOCERATIDAE) (FOSSIL)
- digera, Phosinella digera (C.F. Laseron, 1956) - (RISSOINIDAE)
- digera, Phintorene digera C.F. Laseron, 1956 - syn of: Phosinella digera (C.F. Laseron, 1956) - (RISSOINIDAE)
- digeronimoi, Skeneoides digeronimoi R. La Perna, 1999 - (SKENEIDAE)
- Digerus, Subgenus Tomigerus (Digerus) F. Haas, 1937 (ODONTOSTOMIDAE)
- diggelsi, Anachis diggelsi J.W. Brazier, 1874 - syn of: Zafra digglesi (J.W. Brazier, 1875) - (COLUMBELLIDAE)
- digglesi, Zafra digglesi (J.W. Brazier, 1875) - (COLUMBELLIDAE)
- digglesi, Cardiomorpha digglesi Smith, 1927 † - (GRAMMYSIIDAE) (FOSSIL)
- Digidentis, syn of: Genus Thorunna L.S.R. Bergh, 1878 (CHROMODORIDIDAE)
- diginophora, Planamastra diginophora (C.M.F. Ancey) - (AMASTRIDAE)
- diginophora, Patula diginophora C.M.F. Ancey - syn of: Planamastra diginophora (C.M.F. Ancey) - (DISCIDAE)
- digitale, Buccinum digitale L.W. Dillwyn, 1817 - syn of: Bullia digitalis (L.W. Dillwyn, 1817) - (BUCCINIDAE)
- digitale, Lottia leucopleura digitale (P.F. Röding, 1798) - (LOTTIIDAE)
- digitale, Mangelia digitale L.A. Reeve, 1846 - syn of: Kermia pumila (J.W. Mighels, 1845) - (MANGELIIDAE)
- digitale, Farcimen alutaceum digitale J. Gundlach, 1857 - (MEGALOMASTOMIDAE)
- digitale, Maculotriton digitale (L.A. Reeve, 1844) - (MURICIDAE)
- digitale, Charonia digitale L.A. Reeve, 1844 - syn of: Maculotriton serriale (G.P. Deshayes, 1834) - (RANELLIDAE)
- digitale, Turridrupa digitale L.A. Reeve, 1843 - syn of: Turridrupa cerithina (H.E. Anton, 1838) - (TURRIDAE)
- digitale, Petricola digitale E.A. Smith, 1916 - syn of: Lajonkairia digitalis (E.A. Smith, 1916) - (VENERIDAE)
- digitalina, Cubitostrea digitalina (Dubois de Montperreux, 1831 †) - (OSTREIDAE) (FOSSIL)
- digitalina, Athleta digitalina (J.B.P.A. Lamarck, 1810 †) - (VOLUTIDAE) (FOSSIL)
- digitalis, Acmaea digitalis J.F. von Eschscholtz, 1833 † - (ACMAEIDAE) (FOSSIL)
- digitalis, Acmaea digitalis J. Rathke, 1833 - syn of: Lottia digitalis (J. Rathke, 1833) - (ACMAEIDAE)
- digitalis, Leucotina digitalis W.H. Dall & P. Bartsch, 1906 - syn of: Monotygma amoena (A. Adams, 1853) - (AMATHINIDAE)
- digitalis, Ancilla digitalis A. von Koenen, 1889 † - (ANCILLARIIDAE) (FOSSIL)
- digitalis, Colubraria digitalis L.A. Reeve, 1844 - syn of: Maculotriton digitale (L.A. Reeve, 1844) - (COLUBRARIIDAE)
- digitalis, Lottia digitalis (J. Rathke, 1833) - (LOTTIIDAE)
- digitalis, Lucina digitalis J.B.P.A. Lamarck, 1819 - syn of: Digitaria digitaria (C. Linnaeus, 1758) - (LUCINIDAE)
- digitalis, Dactyloteuthis digitalis H.M.D. de Blainville, 1827 † - (MEGATEUTHIDIDAE) (FOSSIL)
- digitalis, Mitra digitalis J.H.F. Link, 1807 - syn of: Mitra imperialis P.F. Röding, 1798 - (MITRIDAE)
- digitalis, Bullia digitalis (L.W. Dillwyn, 1817) - (NASSARIIDAE)
- digitalis, Odetta digitalis W.H. Dall & P. Bartsch, 1906 - syn of: Monotygma amoena (A. Adams, 1853) - (PYRAMIDELLIDAE)
- digitalis, Charonia digitalis L.A. Reeve, 1844 - syn of: Maculotriton serriale (G.P. Deshayes, 1834) - (RANELLIDAE)
- digitalis, Solen digitalis F.P. Jousseaume, 1891 - (SOLENIDAE)
- digitalis, Teredo digitalis G.F. Roch, 1935 - syn of: Nototeredo knoxi (P. Bartsch, 1917) - (TEREDINIDAE)
- digitalis, Nototeredo digitalis G.F. Roch, 1935 - syn of: Nototeredo knoxi (P. Bartsch, 1917) - (TEREDINIDAE)
- digitalis, Stenomelania digitalis (A. Mousson) - (THIARIDAE)
- digitalis, Lajonkairia digitalis (E.A. Smith, 1916) - (VENERIDAE)
- digitalis seurati, Charonia digitalis seurati M. Couturier, 1907 - syn of: Maculotriton serriale (G.P. Deshayes, 1834) - (RANELLIDAE)
- Digitaria, Genus Digitaria S.V. Wood, 1853 (ASTARTIDAE)
- digitaria, Digitaria digitaria (C. Linnaeus, 1758) - (ASTARTIDAE)
- digitaria, Tellina digitaria C. Linnaeus, 1758 - syn of: Digitaria digitaria (C. Linnaeus, 1758) - (TELLINIDAE)
- digitaria funnazzensis, Digitaria digitaria funnazzensis A. De Gregorio, 1895 - syn of: Digitaria digitaria (C. Linnaeus, 1758) - (ASTARTIDAE)
- Digitariopsis, Subgenus Astarte (Digitariopsis) Chavan, 1952 † (ASTARTIDAE) (FOSSIL)
- digitata, Aeolidia digitata A. Aradas, 1847 - (AEOLIDIIDAE)
- digitata, Aporrhais digitata (K. Roth von Telegd, 1915 †) - (APORRHAIDAE) (FOSSIL)
- digitata, Digitaria digitata J.R. Bourguignat, 1880 - (ASTARTIDAE)
- digitata, Bornella digitata A. Adams & L.A. Reeve, 1848 - syn of: Bornella stellifer (A. Adams & L.A. Reeve in A. Adams, 1848) - (BORNELLIDAE)
- digitata, Diacria digitata R.J.L. Guppy, 1882 † - (CAVOLINIIDAE) (FOSSIL)
- digitata, Cavolinia digitata R.J.L. Guppy, 1903 † - syn of: Diacria digitata R.J.L. Guppy, 1882 † - (CAVOLINIIDAE) (FOSSIL)
- digitata, Calmella digitata A. da Costa, 1866, 1863 - syn of: Calmella cavolini (J.B. Vérany, 1846) - (FLABELLINIDAE)
- digitata, Okenia digitata (M. Edmunds, 1966) - (GONIODORIDIDAE)
- digitata, Macrarene digitata J.H. McLean, R.S. Absalão & Santos Cruz, 1988 - (LIOTIIDAE)
- digitata, Homalocantha digitata (G.B. II Sowerby, 1841) - (MURICIDAE)
- digitata, Drupa digitata J.B.P.A. Lamarck, 1816 - syn of: Drupina grossularia (P.F. Röding, 1798) - (MURICIDAE)
- digitata, Patella digitata G. Fischer von Waldheim, 1807 - syn of: Scutellastra longicosta (J.B.P.A. Lamarck, 1819) - (PATELLIDAE)
- digitata, Ophioglossolambis digitata (G. Perry, 1811) - (STROMBIDAE)
- digitata, Melibe digitata T.M. Gosliner & V.G. Smith, 2003 - (TETHYDIDAE)
- digitata, Stellaria digitata E.C. Von Martens, 1878 - syn of: Stellaria testigera digitata E.C. Von Martens, 1878 - (XENOPHORIDAE)
- digitata, Xenophora digitata E.C. Von Martens, 1878 - syn of: Stellaria testigera digitata E.C. Von Martens, 1878 - (XENOPHORIDAE)
- digitata, Stellaria testigera digitata E.C. Von Martens, 1878 - (XENOPHORIDAE)
- digitata rubra, Digitaria digitata rubra P.M. Pallary, 1912 - syn of: Digitaria digitaria (C. Linnaeus, 1758) - (ASTARTIDAE)
- digitatina, Ostrea digitatina F. Dubois De Montpéreux, 1831 † - (OSTREIDAE) (FOSSIL)
- Digitator, syn of: Genus Lambis P.F. Röding, 1798 (STROMBIDAE)
- digitatum, Oxyprora digitatum (R.M. Branson, 1942 †) - (BRANSONIIDAE) (FOSSIL)
- digitatus, Hexabranchus digitatus C.N.E. Eliot, 1906 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
- digitatus, Waldo digitatus D.G. Zelaya & C.F. Ituarte, 2013 - (LASAEIDAE)
- digitatus, Dactylogammites digitatus Buckman † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- digitatus, Spondylus digitatus G. Perry, 1811 - syn of: Spondylus foliaceus K. Schreibers, 1793 - (SPONDYLIDAE)
- digitatus, Spondylus digitatus G.B. II Sowerby, 1847 - syn of: Spondylus tenuis K. Schreibers, 1793 - (SPONDYLIDAE)
- digitatus, Strombus digitatus G. Perry, 1811 - syn of: Ophioglossolambis digitata (G. Perry, 1811) - (STROMBIDAE)
- digitatus, Unio digitatus P.M.A. Morelet, 1851 - syn of: Magnonaias nickliniana (I. Lea, 1834) - (UNIONIDAE)
- digitiformis, Parthenina digitiformis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- digitiformis, Unio digitiformis G.B. Sowerby, 1868 - syn of: Oxynaia pugio (W.H. Benson, 1862) - (UNIONIDAE)
- Digitolabrum, Genus Digitolabrum Cossmann, 1904 † (APORRHAIDAE) (FOSSIL)
- digitolabrum, Strombopugnellus digitolabrum F.C.L. Koch, 1911 † - (APORRHAIDAE) (FOSSIL)
- Digitophyllites, Genus Digitophyllites Zhao, 1950 † (PROCARNITIDAE) (FOSSIL)
- digitoradulata, Simrothiella digitoradulata L. Salvini-Plawén, 2004 - (SIMROTHIELLIDAE)
- digitortus, Inoceramus digitortus (J. de C. Sowerby) † - (INOCERAMIDAE) (FOSSIL)
- digitulum, Caecum digitulum C. Hedley, 1904 - (CAECIDAE)
- digitulus, Odostomia digitulus A. Peñas & E. Rolán, 1999 - (PYRAMIDELLIDAE)
- digitulus, Pseudotoxeuma digitulus Shimanskiy, 1963 † - (TOXEUMORPHORIDAE) (FOSSIL)
- Diglauconia, syn of: Genus Paraglauconia Maury, 1936 † (EULIMIDAE) (FOSSIL)
- Diglodonte, syn of: Genus Diplodonta H.G. Bronn, 1831 (UNGULINIDAE)
- Diglyptus, syn of: Genus Pitys O.A.L. Mörch, 1852 (ACHATINELLIDAE)
- digna, Hemicycla digna (A. Mousson, 1872) - (HELICIDAE)
- digna, Mitra carbonaria digna A. Adams, 1855 - (MITRIDAE)
- digna, Zediloma digna H.J. Finlay, 1926 - syn of: Diloma nigerrima digna H.J. Finlay, 1926 - (TROCHIDAE)
- digna, Diloma nigerrima digna H.J. Finlay, 1926 - (TROCHIDAE)
- Dignamoconcha, Genus Dignamoconcha T. Iredale, 1944 (HELICARIONIDAE)
- Dignaxis, Subgenus Spiraxis (Dignaxis) F.C. Baker, 1939 (SPIRAXIDAE)
- dignitas, Cinclidonema dignitas C.O. Waterhouse, 1963 † - syn of: Spironemella dignitas (C.O. Waterhouse, 1963 †) - (OMPHALOTROCHIDAE) (FOSSIL)
- dignitas, Spironemella dignitas (C.O. Waterhouse, 1963 †) - (PLATYCERATIDAE) (FOSSIL)
- dignitatis, Epitonium dignitatis Kellum, 1926 † - (EPITONIIDAE) (FOSSIL)
- dignitosum, Neoglyphioceras dignitosum Ruzhentsev & Bogoslovskaya, 1971 † - (GONIATITIDAE) (FOSSIL)
- dignota, Anodonta dignota A.E.J. Férussac, 1835 - syn of: Anodonta cataracta T. Say, 1817 - (UNIONIDAE)
- dignum, Tumaroceras dignum Bogoslovskaya, 1997 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- digona, Digitolabrum digona (L.M.D. Bellardi, 1854 †) - (APORRHAIDAE) (FOSSIL)
- digona, Palaearca digona Salter † - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- digona, Venerupis digona G.P. Deshayes, 1854 - syn of: Irus irus (C. Linnaeus, 1758) - (VENERIDAE)
- digoniata, Chartronella digoniata A.E.M. Cossmann, 1902 † - (ATAPHRIDAE) (FOSSIL)
- Digoniaxis, Genus Digoniaxis F.P. Jousseaume, 1889 (FERUSSACIIDAE)
- Digonioceras, Genus Digonioceras Hyatt , 1894 † (CENOCERATIDAE) (FOSSIL)
- Digoniomya, syn of: Genus Goniophorina Isberg, 1934 † (GONIOPHORINIDAE) (FOSSIL)
- Digoniostoma, Subgenus Bithynia (Digoniostoma) T.N. Annandale, 1920 (BITHYNIIDAE)
- digonophora, Planamastra digonophora (C.M.F. Ancey, 1889) - (AMASTRIDAE)
- digonoptyx, Euphaedusa digonoptyx (O. Böttger, 1877) - (CLAUSILIIDAE)
- digonoptyx comes, Euphaedusa digonoptyx comes (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- digonostoma, Macrogastra rolphii digonostoma (J.R. Bourguignat, 1877) - (CLAUSILIIDAE)
- digonota, Anodonta digonota C.S. Rafinesque, 1831 - syn of: Anodonta cataracta T. Say, 1817 - (UNIONIDAE)
- digostoma, Macrogastra rolphii digostoma (J.R. Bourguignat, 1877) - (CLAUSILIIDAE)
- digressa, Pornosis digressa B. Wade, 1926 † - (FASCIOLARIIDAE) (FOSSIL)
- digressa, Mangelia digressa E. Rolán & J. Otero-Schmidt, 1999 - (MANGELIIDAE)
- digsii, Marginella digsii F.P. Marrat, 1877 - syn of: Glabella faba (C. Linnaeus, 1758) - (MARGINELLIDAE)
- digueti, Armina digueti A. Pruvot-Fol, 1955 - syn of: Armina californica (J.G. Cooper, 1863) - (ARMINIDAE)
- digueti, Bulimulus digueti J.F. Mabille, 1895 - syn of: Spartocentrum digueti (J.F. Mabille, 1895) - (BULIMULIDAE)
- digueti, Chama digueti A. de Rochebrune, 1895 - syn of: Chama venosa L.A. Reeve, 1847 - (CHAMIDAE)
- digueti, Turricula digueti J.F. Mabille, 1898 - (CLAVATULIDAE)
- digueti, Condylocardia digueti É. Lamy, 1917 - (CONDYLOCARDIIDAE)
- digueti, Crassatella digueti É. Lamy, 1917 - syn of: Kalolophus antillarum (L.A. Reeve, 1842) - (CRASSATELLIDAE)
- digueti, Diodora digueti (J.F. Mabille, 1895) - (FISSURELLIDAE)
- digueti, Thaumastus digueti J.F. Mabille, 1895 - syn of: Spartocentrum digueti (J.F. Mabille, 1895) - (MEGASPIRIDAE)
- digueti, Arcopsis digueti J.F. Mabille, 1895 - syn of: Arcopsis solida (G.B. I Sowerby, 1833) - (NOETIIDAE)
- digueti, Paroctopus digueti (R. Perrier & A. de Rochebrune, 1894) - (OCTOPODIDAE)
- digueti, Pleurobranchus digueti A. de Rochebrune, 1895 - (PLEUROBRANCHIDAE)
- digueti, Spartocentrum digueti (J.F. Mabille, 1895) - (UROCOPTIDAE)
- digueti, Lamellaria digueti A. de Rochebrune, 1895 - (VELUTINIDAE)
- Digulella, Subgenus Gulella (Digulella) F. Haas, 1934 (STREPTAXIDAE)
- Digycidum, syn of: Genus Bythinia Leach, 1818 (AMNICOLIDAE)
- Digyrcidum, syn of: Genus Bythinia Leach, 1818 (AMNICOLIDAE)
- Digyrcidum, syn of: Genus Gabbia G.W. Tryon, 1865 (BITHYNIIDAE)
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