Euomphalus glabribasis (FOSSIL) E.L. Yochelson, 1956 †
Euomphalus goldfussi (FOSSIL) Archiac & Verneuil,1842 †
Euomphalopterus gracilis (FOSSIL) E.F.R.K. Koken& J. Perner, 1925 †
Rihamphalus gracilis (FOSSIL) (Ríha, 1938 †)
Euomphalus gradatus (FOSSIL) E.F.R.K. Koken, 1896 †
Poleumita granulosa (FOSSIL) (Lindström, 1884 †)
Linsleyella greggi (FOSSIL) (Rohr, 1980 †)
Poleumita gyrans (FOSSIL) (Lindström, 1884 †)
Poleumita haliburtoni (FOSSIL) McLearn, 1924 †
Straparollus hecale (FOSSIL) J.W. Hall, 1876 †
Straparollus heliciformis (FOSSIL) de Koninck, 1881 †
Euomphalus helicinus (FOSSIL) Münster, 1840 †
Straparollus hippolyta (FOSSIL) Billings, 1865 †
Euomphalus hoffmani (FOSSIL) Sowerby 1814 †
Amphiscapha hollingsworthi (FOSSIL) (Knight, 1934 †)
Acanthonema holopiforme (FOSSIL) Sherzer & A.W. Grabau,1910 †
Straparollus honoratus (FOSSIL) J. Perner, 1903 †
Poleumita hudsonica (FOSSIL) Parks, 1913 †
Euomphalus illinoisensis (FOSSIL) Thein & Nitecki, 1974 †
Poleumita incarinatus (FOSSIL) (Foerste, 1893 †)
Straparollus incongruens (FOSSIL) J. Perner, 1903 †
Straparollus ineptus (FOSSIL) de Koninck, 1881 †
Straparollus inferus (FOSSIL) Lamont †
Mastigospira ingens (FOSSIL) La Rocque, 1949 †
Pentagonodiscus initiopentagonatus (FOSSIL) J. Szabo, 1979 †
Straparollus inops (FOSSIL) J.W. Hall, 1876 †
Euomphalus intermedia (FOSSIL) Sowerby 1814 †
Mastigospira intermedia (FOSSIL) La Rocque, 1949 †
Amphiscapha intermedius (FOSSIL) W.J. Gordon& E.L. Yochelson, 1983 †
Sinutropis interrumpens (FOSSIL) J. Perner, 1903 †
Euomphalopsis involuta (FOSSIL) Ulrich & al., 1931 †
Biformispira isaacsoni (FOSSIL) Rohr, 1980 †
Biformispira isacsonni (FOSSIL) Rohr, 1980 †
Linsleyella johnsoni (FOSSIL) Rohr, 1980 †
Euomphalus kaibabensis (FOSSIL) Chronic, 1952 †