Diplodonta rotundata (G. Montagu, 1803)
Diplodonta sacyi (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1911 †
Bruetia saincenyensis (FOSSIL) (G.P. Deshayes, 1857 †)
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)
Cycladicama semiasperoides S. Nomura, 1932
Diplodonta semirugosa (W.H. Dall, 1899)
Diplodonta sericata (L.A. Reeve, 1850)
Felaniella sertunayensis (FOSSIL) (Slodkewitsch, 1938 ex Kogan, MS †)
Diplodonta shilohensis (FOSSIL) W.H. Dall, 1900 †
Neodiplodonta sinica F.S. Xu, 2012
Felaniella snavelyi (FOSSIL) Moore, 1976 †
Foveamysia soror (C.B. Adams, 1852)
Diplodonta sowerbyi (J.T. Kuroda & T. Habe,1952)
Diplodonta sphaeromorpha (FOSSIL) Gardner, 1926 †
Diplodonta striatina (FOSSIL) G.P. Deshayes, 1857 †
Diplodonta striatula (H.J. Finlay, 1926)
Transkeia subcostata (N.H. Odhner, 1919)
Felaniella subcrassa (E.A. Smith, 1884)
Transkeia subglobosa (E.A. Smith, 1885)
Transkeia subgranulosa (E.A. Smith, 1885)
Diplodonta subgravis (FOSSIL) V.N. Sinelnikova, 1990 †
Felaniella sublateralis (E.A. Smith, 1884)
Numella suborbicularis (FOSSIL) (Tate 1887) †
Cycladicama subquadrata (C. Hedley, 1915)
Diplodonta subquadrata Carpenter, 1855
Felaniella subradiata (G.B. III Sowerby, 1892)
Diplodonta subrotunda (B.C. Cotton, 1930)
Diplodonta subrotunda A. Issel, 1869
Diplodonta subrotundata (FOSSIL) A. Issel, 1869 †
Diplodonta subvexa (FOSSIL) T.A. Conrad, 1838 †
Timothynus subvexa (FOSSIL) (T.A. Conrad, 1833 †)