Euomphalus radiatus (FOSSIL) G.A. Goldfuss, 1832 †
Euomphalopterus recticosta (FOSSIL) J. Perner, 1903 †
Amphiscapha reedsi (FOSSIL) (Knight, 1934 †)
Philoxene retrorsus (FOSSIL) (A. Römer, 1850 †)
Pentagonodiscus reussii (FOSSIL) (J. Von Hauer, 1853 †)
Euomphalus rotundus (FOSSIL) Parks, 1915 †
Euomphalus rotundus (FOSSIL) Wang, 1982 †
Straparollus rudis (FOSSIL) J.W. Hall, 1876 †
Rhabdotocochlis rugata (FOSSIL) Knight, 1933 †
Poleumita rugosa (FOSSIL) (J. de C. Sowerby,1814 †)
Straparollus savagei (FOSSIL) Knight, 1934 †
Poleumita scamnata (FOSSIL) A.H. Clarke & Ruedemann,1903 †
Euomphalus schnurii (FOSSIL) d'Archiac & de Verneuil,1842 †
Euomphalopterus seductor (FOSSIL) J. Perner, 1903 †
Calzadina segurai (FOSSIL) Forner & Valls, 2014 †
Poleumita semiplanus (FOSSIL) J. Perner, 1907 †
Fletcherviewia septata (FOSSIL) Cook, 1993 †
Straparollus serpenteus (FOSSIL) P.D. Montfort 1810 †
Phanerotinus serpula (FOSSIL) (de Koninck, 1843 †)
Euomphalus serratus (FOSSIL) Knight, 1934 †
Tongweispira sichuanensis (FOSSIL) Tong & Erwin, 2001 †
Euomphalus similis (FOSSIL) F.B. Meek & A.H. Worthen,1862 †
Saturnotropis simulans (FOSSIL) (J. Perner, 1903 †)
Muirheada simulans (FOSSIL) (Salter †)
Euomphalus simuloides (FOSSIL) A.W. Grabau, 1931 †
Euomphalus sinister (FOSSIL) Tolmachoff, 1930 †
Eleutherospira sinistralis (FOSSIL) Blodgett & Johnson,1992 †
Philoxene sodalis (FOSSIL) J. Perner, 1903 †
Straparollus spergenensis (FOSSIL) J.W. Hall, 1856 †
Linsleyella spinosa (FOSSIL) (Salter, 1859 †)
Hystricoceras spinosum (FOSSIL) Jahn, 1894 †
Sinutropis spiralis (FOSSIL) (Rohr, 1988 †)
Eleutherospira steltenbergensis (FOSSIL) Heidelberger & Koch,2005 †
Euomphalus studeri (FOSSIL) Klipstein, 1843 †
Euomphalopterus subcarinatus (FOSSIL) Lindström, 1884 †