Pietteia roubaleti (FOSSIL) (Schlumberger, 1864 †)
Pietteia roubaleti dimidiata (FOSSIL) W.H. Hudleston, 1888 †
Pietteia roubaleti dorsetensis (FOSSIL) W.H. Hudleston, 1888 †
Alaria rudis (FOSSIL) C. Moore, 1867 †
Drepanocheilus ruida (FOSSIL) White, 1876 †
Drepanocheilus ruidium (FOSSIL) White, 1876 †
Aporrhais rumelicus (FOSSIL) (F. Toula, 1892 †)
Trilemma russiense (FOSSIL) Blagovetshenskiy& Shumilkin, 2006 †
Checchiaia sanfilippoi (FOSSIL) Maxia, 1941 †
Struthiochenopus santacruzensis (FOSSIL) (H.F.A. von Ihering,1907 †)
Monocuphus sauvagei (FOSSIL) †
Aporrhais scaldensis (FOSSIL) C.O. Van Regteren Altena,1954 †
Perissoptera schlagintweiti (FOSSIL) del Rio, 2002 †
Perissoptera schlotheimi (FOSSIL) (A. Römer, 1841 †)
Drepanocheilus scotti (FOSSIL) (N.F. Sohl, 1967 †)
Spinigera semicarinata (FOSSIL) (G.G. Münster, 1844 †)
Aporrhais senegalensis J.E. Gray, 1838
Quadrinervus sequanicus (FOSSIL) A.E.M. Cossmann†
Aporrhais sera (FOSSIL) (Steininger, 1963 †)
Aporrhais serresianus (A. Michaud, 1828)
Latiala sigma (FOSSIL) Saul, 1998 †
Graciliala simplex (FOSSIL) (A.V.M.D. A.V.M.D. D'Orbigny, 1843 †)
Cuphosolenus singleyi (FOSSIL) Stanton, 1947 †
Tessarolax sinzovi (FOSSIL) Nackij, 1916 †
Struthioptera smiti (FOSSIL) R.A. Del Valle& F.A. Medina, 1977 †
Alaria solida (FOSSIL) J. Lycett, 1867 †
Graciliala solitaria (FOSSIL) (R.P. Whitfield, 1892 †)
Aporrhais sowerbii (FOSSIL) (J. Fleming, 1828 †)
Dimorphosoma spathochila (FOSSIL) J. Gardner, 1875 †
Aporrhais speciosa (FOSSIL) (von Schlotheim, 1820 †)
Aporrhais speciosa margerini (FOSSIL) (de Koninck, 1837 †)
Cuphosolenus sphinx (FOSSIL) L.É.S. Piette, 1882 †
Alaria spinulosa (FOSSIL) W.H. Hudleston, 1888 †
Maussenetia staadti (FOSSIL) A.E.M. Cossmann, 1904 †
Helicaulax stenoptera (FOSSIL) (G.A. Goldfuss, 1844 †)