Ventrilia smithfieldensis (FOSSIL) Oleksyshyn, 1960 †
Axelella smithii (W.H. Dall, 1888)
Pyruclia solida (Sowerby, 1832)
Cancellaria souverbiei J.C.H. Crosse, 1868
Pyruclia spatiosa (FOSSIL) (R.N. Nelson, 1870 †)
Crawfordina species (FOSSIL) †
Trigonostoma speciosum (FOSSIL) E.W. Vredenburg, 1921 †
Admete specularis (R.B. Watson, 1882)
Sydaphera spengleriana (G.P. Deshayes, 1830)
Bonellitia sphaericula (FOSSIL) A.E.M. Cossmann, 1889 †
Axelella spheniodostoma (FOSSIL) (J. Gardner, 1937 †)
Axelella spherotopleura (FOSSIL) (J. Gardner, 1937 †)
Trigonostoma spiniferum (FOSSIL) (J.P.S. Grateloup,1832 †)
Cancellaria spinosa J.P.S. Grateloup, 1827
Nevia spirata (J.B.P.A. Lamarck, 1822)
Iphinopsis splendens L.R.L. Simone & A. Birman,2006
Sveltia splendidula P. Bouchet & R.E. Petit,2002
Inglisella staffordensis (FOSSIL) P.A. Maxwell, 1992 †
Trigonaphera stenomphala T. Habe, 1961
Cancellaria stibara (FOSSIL) J. Gardner, 1937 †
Cancellaria stri (FOSSIL) B.M. Landau & al., 2012 †
Bonellitia striatulata (FOSSIL) (G.P. Deshayes, 1835 †)
Pepta stricta (C. Hedley, 1907)
Bivetia stromboides (FOSSIL) (J.P.S. Grateloup,1832 †)
Agatrix strongi (D.R. Shasky, 1961)
Merica stuardoi (J.H. McLean& B.G. Andrade, 1982)
Cancellaria subangulosa (FOSSIL) Wood, 1842 †
Zeadmete subantarctica A.W.B. Powell, 1933
Bivetia subcancellata (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Bonellitia subevulsa (A.V.M.D. D'Orbigny,1850 )
Admetopsis subfusiformis (FOSSIL) (F.B. Meek †)
Cancellaria subtiarophora (FOSSIL) J. Gardner, 1937 †
Cancellaria subtuberosa (FOSSIL) G.D. Hanna, 1926 †
Nipponaphera suduirauti (A. Verhecken, 1999)
Admetula superstes (H.J. Finlay, 1930)