Amphiscapha (Cylicioscapha) texana Yochelson, 1956 † accepted as Cylicioscapha texana (Yochelson, 1956) †
Cylicioscapha sinensis X.-D. Qiao, 1983 † (uncertain > unassessed )
Cylicioscapha tarimensis X.-D. Qiao, 1983 † (uncertain > unassessed )
Cylicioscapha texana (Yochelson, 1956) †
Discotheca cycla X.-D. Qiao, 1983 †
Discotropis alveola X.-D. Qiao, 1983 † (uncertain > unassessed )
Discotropis klobukowskii (Mansuy, 1912) †
Discotropis publicus Yochelson, 1956 †
Ecculiomphalus kalpinensis X.-D. Qiao, 1981 † (uncertain > unassessed )
Ecculiomphalus minor H.-Z. Pan, 1978 † (uncertain > unassessed )
Ellisella greggi Rohr, 1980 † accepted as Yochelsoniella greggi (Rohr, 1980) †
Euomphalopsis splettstoesseri Webers, Pojeta & Yochelson, 1992 †
Euomphalus africanum (Heidelberger, Korn & Ebbighausen, 2009) †
Euomphalus canaliculatus Trautschold, 1879 † accepted as Omphalotrochus canaliculatus (Trautschold, 1879) †
Euomphalus centrifugalis Chapman, 1916 † accepted as Tropidodiscus centrifugalis (Chapman, 1916) †
Euomphalus circinalis Goldfuss, 1844 † accepted as Goldfussoceras circinalis (Goldfuss, 1844) †
Euomphalus cornudanus (Shumard, 1859) †
Euomphalus goldfussi d'Archiac & de Verneuil, 1842 † accepted as Euomphalus goldfussii d'Archiac & de Verneuil, 1842 † accepted as Omphalocirrus goldfussii (d'Archiac & de Verneuil, 1842) †
Euomphalus goldfussii d'Archiac & de Verneuil, 1842 † accepted as Omphalocirrus goldfussii (d'Archiac & de Verneuil, 1842) †
Euomphalus intermedius (M. Gordon & Yochelson, 1983) †
Euomphalus jiangyouensis Y.-T. Pan, 1978 † (uncertain > unassessed )
Euomphalus kaibabensis Chronic, 1952 †
Euomphalus klobukowskii Mansuy, 1912 † accepted as Discotropis klobukowskii (Mansuy, 1912) †
Euomphalus labadyei d'Archiac & Verneuil, 1842 † (uncertain > unassessed )
Euomphalus latus Y.-T. Pan, 1978 † (uncertain > unassessed )
Euomphalus majiaobaensis Y.-T. Pan, 1978 † (uncertain > unassessed )
Euomphalus mapingensis (Grabau, 1936) †
Euomphalus marginatiformis (B. K. Likharev, 1967) †
Euomphalus marginatus Eichwald, 1860 †
Euomphalus minimus McCoy, 1847 † (uncertain > unassessed )
Euomphalus minutus Zieten, 1832 † accepted as Coelodiscus minutus (Zieten, 1832) †
Euomphalus moniliferus Romanovsky, 1890 †
Euomphalus obtusus J. Hall, 1858 †
Euomphalus orbis Reuss, 1852 † accepted as Discohelix orbis (Reuss, 1852) †
Euomphalus ornata M. Hoernes, 1853 † accepted as Discohelix ornata (M. Hoernes, 1853) †
Euomphalus peskensis (Mazaev, 1994) †
Euomphalus pirochiensis (Mazaev, 1994) †
Euomphalus planodorsatus Meek & Worthen, 1861 † (uncertain > unassessed )
Euomphalus planorbis d'Archiac & Verneuil, 1842 † (uncertain > unassessed )
Euomphalus radiatus Menke, 1850 accepted as Heliacus (Heliacus) areola bicanaliculatus (Valenciennes, 1832) represented as Heliacus areola bicanaliculatus (Valenciennes, 1832)
Euomphalus rectangulus Mansuy, 1913 † accepted as Discotropis klobukowskii (Mansuy, 1912) †
Euomphalus reussii M. Hoernes, 1853 † accepted as Pentagonodiscus reussii (M. Hoernes, 1853) †
Euomphalus schnuri d'Archiac & Verneuil, 1842 † (uncertain > unassessed )
Euomphalus solariformis Delpey, 1941 † accepted as Dichostasia solariformis (Delpey, 1941) †
Euomphalus strongi Whitfield, 1878 † (uncertain > taxon inquirendum )
Euomphalus strongi var. sinistrorsus Berkey, 1898 † accepted as Sinuopea sweeti (Whitfield, 1880) †
Euomphalus umbilicatus Meek & Worthen, 1861 † (uncertain > unassessed )
Goldfussoceras circinalis (Goldfuss, 1844) †
Leptomphalus kushuiensis X.-D. Qiao, 1983 † (uncertain > unassessed )
Leptomphalus micidus (Yochelson, 1956) †
Paromphalus mapingensis Grabau, 1936 † accepted as Euomphalus mapingensis (Grabau, 1936) †
Paromphalus rotundus H.-J. Wang, 1982 † (uncertain > unassessed )
Phymatifer giganteus Y.-T. Pan, 1978 † (uncertain > unassessed )
Schizostoma africanum Heidelberger, Korn & Ebbighausen, 2009 † accepted as Euomphalus africanum (Heidelberger, Korn & Ebbighausen, 2009) †
Schizostoma buchii Münster, 1841 † accepted as Kokenella buchi (Münster, 1841) †
Schizostoma costata Münster, 1841 † (uncertain > unassessed )
Schizostoma costatum Goldfuss, 1844 † accepted as Paragnesia costata (Goldfuss, 1844) †
Schizostoma leonhardi d'Archiac & Verneuil, 1842 † (uncertain > unassessed )
Schizostoma puzosii d'Archiac & Verneuil, 1842 † (uncertain > unassessed )
Schizostoma showalteriana Tryon, 1873 accepted as Gyrotoma excisum (I. Lea, 1843) accepted as Gyrotoma excisa (I. Lea, 1843)
Semisolarium albense (A. d'Orbigny, 1842) †
Semisolarium astierianum (A. d'Orbigny, 1842) †
Semisolarium bailyi (Gabb, 1861) † accepted as Microgaza bailyi (Gabb, 1861) †
Semisolarium moniliferum (Michelin, 1833) †
Semisolarium neocomiense (A. d'Orbigny, 1842) †
Serpulospira scalariformis Yoo, 1994 †
Straparollus (Euomphalus) cornudanus Shumard, 1859 † accepted as Euomphalus cornudanus (Shumard, 1859) †
Straparollus (Euomphalus) intermedius M. Gordon & Yochelson, 1983 † accepted as Euomphalus intermedius (M. Gordon & Yochelson, 1983) †
Straparollus (Euomphalus) kaibabensis Chronic, 1952 † accepted as Euomphalus kaibabensis Chronic, 1952 †
Straparollus (Euomphalus) marginatiformis B. K. Likharev, 1967 † accepted as Euomphalus marginatiformis (B. K. Likharev, 1967) †
Straparollus (Euomphalus) marginatus (Eichwald, 1860) † accepted as Euomphalus marginatus Eichwald, 1860 †
Straparollus (Euomphalus) moniliferus (Romanovsky, 1890) † accepted as Euomphalus moniliferus Romanovsky, 1890 †
Straparollus (Euomphalus) obtusus (J. Hall, 1858) † accepted as Euomphalus obtusus J. Hall, 1858 †
Straparollus (Euomphalus) peskensis Mazaev, 1994 † accepted as Euomphalus peskensis (Mazaev, 1994) †
Straparollus (Euomphalus) pirochiensis Mazaev, 1994 † accepted as Euomphalus pirochiensis (Mazaev, 1994) †
Straparollus (Leptomphalus) micidus Yochelson, 1956 † accepted as Leptomphalus micidus (Yochelson, 1956) †
Straparollus altus A. d'Orbigny, 1853 † accepted as Colpomphalus altus (A. d'Orbigny, 1853) †
Straparollus batangensis Y.-T. Pan, 1978 † (uncertain > unassessed )
Straparollus brevis Yoo, 1994 †
Straparollus cornudanus Shumard, 1859 † accepted as Euomphalus cornudanus (Shumard, 1859) †
Straparollus lens Gabb, 1864 † accepted as Polygyroidea lens (Gabb, 1864) †
Straparollus nudus Piette, 1855 † accepted as Crossostoma nudum (Piette, 1855) †
Straparollus scalatus Cossmann, 1885 † (uncertain > unassessed )
Straparollus similis Meek & Worthen, 1861 † (uncertain > unassessed )
Straparollus similis var. planus Meek & Worthen, 1861 † (uncertain > unassessed )
Straparollus tianshanensis X.-D. Qiao, 1983 † (uncertain > unassessed )
Straparollus tongziensis Y.-T. Pan, 1978 † (uncertain > unassessed )
Straparolus pulchellus A. d'Orbigny, 1850 † accepted as Nummocalcar (Platybasis) pulchellum (A. d'Orbigny, 1850) † represented as Nummocalcar pulchellum (A. d'Orbigny, 1850) †
Straparolus spinifer Piette, 1855 † accepted as Nummocalcar (Platybasis) pulchellum (A. d'Orbigny, 1850) † represented as Nummocalcar pulchellum (A. d'Orbigny, 1850) †
Yochelsoniella greggi (Rohr, 1980) †