Diplodonta rotundata (G. Montagu, 1803) Spain23 mm
Diplodonta sacyi (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1911 † France, Aquitaine
Bruetia saincenyensis (FOSSIL) (G.P. Deshayes, 1857 †) France, Paris Basin
Diplodonta sansibarica S.G.A. Jaeckel& K.H.J. Thiele, 1931
Transkeia satparaensis (H.B. Preston, 1915)
Felaniella scalpta (E.A. Smith, 1885)
Transkeia scleractinica (R.N. Kilburn, 1996)
Phlyctiderma semiaspera (R.A. Philippi, 1836) Uruguay13 mm
Cycladicama semiasperoides S. Nomura, 1932 Japan, Miyagi
Diplodonta semirugosa (W.H. Dall, 1899)
Diplodonta sericata (L.A. Reeve, 1850) Panama11 mm
Felaniella sertunayensis (FOSSIL) (Slodkewitsch, 1938 ex Kogan, MS †) Eastern Kamchatka
Diplodonta shilohensis (FOSSIL) W.H. Dall, 1900 † USA, New Jersey, Cumberland
Neodiplodonta sinica F.S. Xu, 2012
Felaniella snavelyi (FOSSIL) Moore, 1976 † United States, Oregon, Columbia
Foveamysia soror (C.B. Adams, 1852) Jamaica
Diplodonta sowerbyi (J.T. Kuroda & T. Habe,1952) South Korea, Jeju Island4,15 mm
Diplodonta sphaeromorpha (FOSSIL) Gardner, 1926 † Florida
Diplodonta striatina (FOSSIL) G.P. Deshayes, 1857 † France, Paris Basin
Diplodonta striatula (H.J. Finlay, 1926) New Zealand15 mm
Transkeia subcostata (N.H. Odhner, 1919)
Felaniella subcrassa (E.A. Smith, 1884) Queensland
Transkeia subglobosa (E.A. Smith, 1885) America
Transkeia subgranulosa (E.A. Smith, 1885)
Diplodonta subgravis (FOSSIL) V.N. Sinelnikova, 1990 † Western Kamchatka
Felaniella sublateralis (E.A. Smith, 1884) Northern Territory
Numella suborbicularis (FOSSIL) (Tate 1887) †
Cycladicama subquadrata (C. Hedley, 1915) Panama West15,2 mm
Diplodonta subquadrata Carpenter, 1855
Felaniella subradiata (G.B. III Sowerby, 1892) South Africa, Cape19,3 mm
Diplodonta subrotunda (B.C. Cotton, 1930) Australia
Diplodonta subrotunda A. Issel, 1869 Gulf of Aqaba20 mm
Diplodonta subrotundata (FOSSIL) A. Issel, 1869 † Egypt, Hurghada
Diplodonta subvexa (FOSSIL) T.A. Conrad, 1838 † Florida
Timothynus subvexa (FOSSIL) (T.A. Conrad, 1833 †) USA, Maryland