1. Genus Amphelissa Etheridge, 1921 †
2. Genus Amphiscapha Knight, 1942 †
3. Genus Burdikinia Knight, 1937 †
4. Genus Cylicioscapha Yochelson, 1956 †
5. Genus Discotheca X.-D. Qiao, 1983 †
6. Genus Discotropis Yochelson, 1956 †
7. Genus Ecculiomphalus Portlock, 1843 †
8. Genus Euomphalopsis Ulrich & Bridge, 1931 †
9. Genus Euomphalus J. De C. Sowerby, 1814 †
10. Genus Goldfussoceras Blodgett & Frýda, 1999 †
11. Genus Leptomphalus Yochelson, 1956 †
12. Genus Nodeuomphalus Bandel & Frýda, 1998 †
13. Genus Phymatifer de Koninck, 1881 †
14. Genus Poleumita J. M. Clarke & Ruedemann, 1903 †
15. Genus Semisolarium Cossmann, 1916 †
16. Genus Serpulospira Cossmann, 1916 †
17. Genus Straparollus Montfort, 1810 †
18. Genus Triassocirrus Yin & Yochelson, 1983 †
19. Genus Yochelsoniella Rohr & Huddlestone, 1982 †
20. Genus Austerum Heidecker, 1959 † accepted as Amphelissa Etheridge, 1921 † (unaccepted > junior subjective synonym)
21. Genus Ellisella Rohr, 1980 † accepted as Yochelsoniella Rohr & Huddlestone, 1982 † (unaccepted > junior homonym, invalid; not Gray, 1858)
22. Genus Enomphalus [sic] † accepted as Euomphalus J. De C. Sowerby, 1814 † (unaccepted > misspelling - incorrect subsequent spelling)
23. Genus Paromphalus Grabau, 1936 † accepted as Euomphalus J. De C. Sowerby, 1814 † (unaccepted > junior subjective synonym)
24. Genus Polyamma Etheridge, 1917 † accepted as Burdikinia Knight, 1937 † (unaccepted > junior homonym, junior homonym of Polyamma Kriechbaumer, 1894; Burdikinia is a replacement name)
25. Genus Polytropis de Koninck, 1881 † accepted as Poleumita J. M. Clarke & Ruedemann, 1903 † (unaccepted > junior homonym, junior homonym of Polytropis F. Sandberger, 1875; Polytropina Donald, 1905 and Poleumita J. M. Clarke & Ruedemann, 1903 are replacement names)
26. Genus Schizostoma Bronn, 1835 † accepted as Euomphalus J. De C. Sowerby, 1814 † (Invalid: placed on the Official Index by Opinion 1470, 1988, Bulletin of Zoological Nomenclature, 45(1): 64)
27. Genus Straparolus Montfort, 1810 † accepted as Straparollus Montfort, 1810 † (unaccepted > misspelling - incorrect original spelling, alternative original spelling)

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