Cypraedia reedi (FOSSIL) Abbass, 1967 †
Dissona reflexa C.N. Cate, 1973
Simnia regularoidea T.H. Aldrich 1921
Phenacovolva rehderi C.N. Cate, 1973
Prosimnia renovata T. Iredale, 1930
Cyphoma rhomba C.N. Cate, 1978
Quasisimnia robertsoni (C.N. Cate, 1973)
Diminovula rosadoi F.Jr. Lorenz & D. Fehse,2009
Phenacovolva rosea (A. Adams, 1854)
Primovula roseomaculata (M.M. Schepman, 1909)
Primovula roseomaculata florida (J.T. Kuroda, 1958)
Primovula rosewateri (C.N. Cate, 1973)
Simnia rostralina (FOSSIL) G.P. Deshayes, 1865 †
Simnia rufa G.B. II Sowerby, 1832
Hiatavolva rugosa (C.N. Cate& M. Azuma in C.N. Cate, 1973)
Dentiovula rutherfordiana (C.N. Cate, 1973)
Diminovula sandrae F.Jr. Lorenz & D. Fehse,2011
Primovula santacarolinensis C.N. Cate, 1978
Transovula schefferi (FOSSIL) A. De Gregorio, 1880 †
Phenacovolva schmidi D. Fehse & V. Wiese, 1993
Simnia scobina Garvie 1996
Simnia sculptura (C.N. Cate, 1973)
Simnia semen (FOSSIL) (J.L.M. Defrance, 1825 †)
Procalpurnus semistriatus (W.H. Pease, 1862)
Prosimnia semperi (H.C. Weinkauff, 1881)
Simnia senegalensis (F.A. Schilder, 1931)
Cypraedia separabilis (FOSSIL) (Schilder 1928 †)
Rotaovula septemmacula (M. Azuma, 1974)
Pseudosimnia shikamai (C.N. Cate, 1973)
Kuroshiovolva shingoi M. Azuma & C.N. Cate,1971
Cyphoma signatum H.A. Pilsbry& J.T.L. McGinty, 1939
Cuspivolva singaporica Fehse & Koh, 2016
Cuspivolva singularis (C.N. Cate, 1973)
Margovula somaliensis (D. Fehse, 2001)
Simnia spelta (C. Linnaeus, 1758)