Dostia cuneata (FOSSIL) W.M. Gabb, 1869 †
Theodoxus cunici (FOSSIL) (Š. Brusina, 1892 †)
Clithon cuvierianus C.A. Récluz, 1841
Clithon cuvierianus foliosus (G.B. II Sowerby, 1849)
Theodoxus cyrtocelis (FOSSIL) (C.F.F. von Krauss,1852 †)
Neritina daani (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Nerita dacostae C.A. Récluz, 1844
Neritina daisyae (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Theodoxus danasteri (W.A. Lindholm, 1908)
Theodoxus danubialis (L. Pfeiffer, 1828)
Theodoxus danubialis stragulatus (L. Pfeiffer, 1828)
Mienerita debilis (H. Dufo, 1840)
Nerita decorata (FOSSIL) Münster, 1841 †
Neritina delessertii (R.E. Petit)
Theodoxus denisluensis (FOSSIL) (P. Oppenheim, 1919 †)
Theodoxus deperditus (FOSSIL) (J. Almera, 1894 †)
Septaria depressa Unknown Author
Clithon diadema (W.J. Broderip, 1832)
Neripteron dilatatum (W.J. Broderip, 1833)
Theodoxus djedida T. Kira, 1955
Theodoxus doderleini (FOSSIL) d'Ancona, 1869 †
Theodoxus doingii (C.A. Récluz, 1846)
Nerita dombeyi C.A. Récluz, 1841
Clithon dominguensis (J.B.P.A. Lamarck, 1822)
Neritina dominicana (FOSSIL) Costa & al., 2001 †
Clithon donovani (C.A. Récluz, 1842)
Theodoxus doricus (FOSSIL) (M. von Neumayr, 1880 †)
Neritodryas dubia (J.F. Gmelin, 1791)
Neritodryas dubia mikoi T. Cossignani, 2016
Theodoxus dumortieri (FOSSIL) (C.F. Fontannes, 1878 †)
Neritodryas dutemplei (FOSSIL) G.P. Deshayes, 1864 †
Neritina ectypha (FOSSIL) W.P. Woodring, 1973 †
Neritina elephantina (FOSSIL) Wesselingh, 2003 †
Cryptonerita elliptica (FOSSIL) E.A.L. Kittl, 1894 †
Theodoxus elongatulus (P.M.A. Morelet, 1845)