Cerithidea rhizophorarum morchii A. Adams, 1855
Szaboella riethmuelleri (FOSSIL) (P. Oppenheim, 1892 †)
Potamides ripaudi (FOSSIL) (Vasseur, 1881 †)
Cerithideopsis roselli (FOSSIL) Dominici & T. Kowalke,2014 †
Potamides roumaini (FOSSIL) H.A. Pilsbry, 1910 †
Pirenella rugosa D.G. Reid, 2016
Potamides saltillensis (FOSSIL) T.H. Aldrich, 1911 †
Telescopium samanense (FOSSIL) A.A. Olsson, 1928 †
Potamides satillensis (FOSSIL) T.H. Aldrich, 1911 †
Cerithidea scalariformis (T. Say, 1825)
Potamides scalaroides (FOSSIL) G.P. Deshayes, 1833 †
Potamides scruposus (FOSSIL) (G.P. Deshayes †)
Tympanotonos semicoronatum (FOSSIL) (J.B.P.A. Lamarck,1804 †)
Potamides semicostatum (FOSSIL) (R. Tate, 1885 †)
Terebralia semistriatus O.A.L. Mörch, 1852
Tympanotonos semperi (FOSSIL) G.P. Deshayes, 1864 †
Potamides sespeensis (FOSSIL) Loel & Corey, 1932 †
Bittiscala simplex (FOSSIL) (P. Marshall, 1917 †)
Cerithidea sindiensis (FOSSIL) E.W. Vredenburg, 1928 †
Cerithidea sinensis (R.A. Philippi, 1849)
Potamides sisophonensis (FOSSIL) Delpey, 1942 †
Tympanotonos sonensis (FOSSIL) (L. Vignal, 1910 †)
Pyrazus spectabilis (FOSSIL) G.P. Deshayes, 1864 †
Tympanotonos stroppus (FOSSIL) A. Brongniart, 1823 †
Pirenella subconica (FOSSIL) (P.M. Pallary, 1901 †)
Terebralia subcorrugata (FOSSIL) A.V.M.D. D'Orbigny,1852 †
Harrisianella subglabra (FOSSIL) Schnetler, 2001 †
Terebralia sublignitarum (FOSSIL) E.W. Vredenburg, 1928 †
Cerithideopsilla sucabumiana (FOSSIL) (Martin, 1899 †)
Terebralia sulcata (I. von Born, 1778)
Pirenella supracretacea (FOSSIL) (L. von G. Tausch,1886 †)
Dentimides suprasulcatus (FOSSIL) (W.M. Gabb, 1873 †)
Pyrazus sutherlandi (FOSSIL) J. Marwick, 1929 †
Potamides suturatus (FOSSIL) A.E.M. Cossmann, 1923 †
Mesohalina taschei (FOSSIL) (Ludwig, 1865 †)