Ventrilia smithfieldensis (FOSSIL) Oleksyshyn, 1960 † USA, Florida, Osceola
Axelella smithii (W.H. Dall, 1888) Venezuela13 mm
Pyruclia solida (Sowerby, 1832) West Panama53,1 mm
Cancellaria souverbiei J.C.H. Crosse, 1868
Pyruclia spatiosa (FOSSIL) (R.N. Nelson, 1870 †)
Crawfordina species (FOSSIL) † Oregon, Coos bay, Astoria formation
Trigonostoma speciosum (FOSSIL) E.W. Vredenburg, 1921 † Myanmar, Magway, Thayetmyo
Admete specularis (R.B. Watson, 1882)
Sydaphera spengleriana (G.P. Deshayes, 1830) South Korea52 mm
Bonellitia sphaericula (FOSSIL) A.E.M. Cossmann, 1889 † France, Paris Basin11 mm
Axelella spheniodostoma (FOSSIL) (J. Gardner, 1937 †) Florida, Alum Bluff formation8 mm
Axelella spherotopleura (FOSSIL) (J. Gardner, 1937 †) Florida, Alum Bluff formation13 mm
Trigonostoma spiniferum (FOSSIL) (J.P.S. Grateloup,1832 †) France, Aquitaine29 mm
Cancellaria spinosa J.P.S. Grateloup, 1827 Germany18 mm
Nevia spirata (J.B.P.A. Lamarck, 1822) South Australia33 mm
Iphinopsis splendens L.R.L. Simone& A. Birman, 2006 Brazil, Rio Grande do Sul10 mm
Sveltia splendidula P. Bouchet & R.E. Petit,2002 New Caledonia, Ile des Pins11 mm
Inglisella staffordensis (FOSSIL) P.A. Maxwell, 1992 †
Trigonaphera stenomphala T. Habe, 1961 Yellow Sea23,9 mm
Cancellaria stibara (FOSSIL) J. Gardner, 1937 † Florida, Alum Bluff formation7,5 mm
Cancellaria stri (FOSSIL) B.M. Landau & al., 2012 † Panama, Golfo de los Mosquitos
Bonellitia striatulata (FOSSIL) (G.P. Deshayes, 1835 †) France, Paris Basin15 mm
Pepta stricta (C. Hedley, 1907) Tasmania
Bivetia stromboides (FOSSIL) (J.P.S. Grateloup,1832 †) France, Aquitaine29 mm
Agatrix strongi (D.R. Shasky, 1961) Mexico West13,4 mm
Merica stuardoi (J.H. McLean& B.G. Andrade, 1982) Chile, Quintero
Cancellaria subangulosa (FOSSIL) Wood, 1842 † UK, England, Norfolk
Zeadmete subantarctica A.W.B. Powell, 1933 New Zealand
Bivetia subcancellata (FOSSIL) (A.V.M.D. D'Orbigny,1852 †) France, Aquitaine40 mm
Bonellitia subevulsa (A.V.M.D. D'Orbigny,1850 ) France, Picardie10 mm
Admetopsis subfusiformis (FOSSIL) (F.B. Meek †) Texas, Grayson County
Cancellaria subtiarophora (FOSSIL) J. Gardner, 1937 † Florida, Alum Bluff formation28 mm
Cancellaria subtuberosa (FOSSIL) G.D. Hanna, 1926 † USA, California, Imperial
Nipponaphera suduirauti (A. Verhecken, 1999) Philippines, Balicasag Island17,4 mm
Admetula superstes (H.J. Finlay, 1930) New Zealand