1. Species Euomphalus africanum (Heidelberger, Korn & Ebbighausen, 2009) †
2. Species Euomphalus cornudanus (Shumard, 1859) †
3. Species Euomphalus intermedius (M. Gordon & Yochelson, 1983) †
4. Species Euomphalus kaibabensis Chronic, 1952 †
5. Species Euomphalus mapingensis (Grabau, 1936) †
6. Species Euomphalus marginatiformis (B. K. Likharev, 1967) †
7. Species Euomphalus marginatus Eichwald, 1860 †
8. Species Euomphalus moniliferus Romanovsky, 1890 †
9. Species Euomphalus obtusus J. Hall, 1858 †
10. Species Euomphalus peskensis (Mazaev, 1994) †
11. Species Euomphalus pirochiensis (Mazaev, 1994) †
12. Species Euomphalus tenuistriatus X.-G. Zhu, 1995 †
13. Subgenus Euomphalus (Cyclonema) J. Hall, 1852 † accepted as Cyclonema J. Hall, 1852 † (unaccepted > superseded rank)
    1. Species Euomphalus (Cyclonema) rugaelineata J. Hall & Whitfield, 1872 † (uncertain > unassessed)
14. Subgenus Euomphalus (Omalogyra) Jeffreys, 1859 accepted as Omalogyra Jeffreys, 1859 (original rank)
15. Species Euomphalus altus Kirchner, 1915 † accepted as Straparollus devonoaltus Heidelberger & Bandel, 1999 † (unaccepted > junior homonym, junior homonym of Euomphalus altus Koninck, 1881; Straparollus devonoaltus is a replacement name)
16. Species Euomphalus angelini Lindström, 1884 † accepted as Lytospira angelini (Lindström, 1884) † (unaccepted > superseded combination)
17. Species Euomphalus anguis M'Coy, 1844 † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > junior subjective synonym)
18. Species Euomphalus aries Laube, 1868 † accepted as Cortinella aries (Laube, 1868) † (unaccepted > superseded combination)
19. Species Euomphalus canaliculatus Trautschold, 1879 † accepted as Omphalotrochus canaliculatus (Trautschold, 1879) † (basionym)
20. Species Euomphalus centrifugalis Chapman, 1916 † accepted as Tropidodiscus centrifugalis (Chapman, 1916) † (unaccepted > superseded combination)
21. Species Euomphalus circinalis Goldfuss, 1844 † accepted as Goldfussoceras circinalis (Goldfuss, 1844) † (unaccepted > superseded combination)
22. Species Euomphalus cyclostomus J. Hall, 1858 † accepted as Straparollus cyclostomus (J. Hall, 1858) † (unaccepted > superseded combination)
23. Species Euomphalus dionysii (de Koninck, 1843) † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > superseded combination)
24. Species Euomphalus discors J. De C. Sowerby, 1814 † accepted as Poleumita discors (J. De C. Sowerby, 1814) † (unaccepted > superseded combination)
25. Species Euomphalus excavatus Reuss, 1852 † accepted as Discohelix excavata (Reuss, 1852) † (unaccepted > superseded combination)
26. Species Euomphalus ferox Gümbel, 1861 † accepted as Discohelix ferox (Gümbel, 1861) † (unaccepted > superseded combination)
27. Species Euomphalus goldfussi [sic] † accepted as Omphalocirrus goldfussii (d'Archiac & Verneuil, 1842) † (unaccepted > misspelling - incorrect subsequent spelling)
28. Species Euomphalus goldfussii d'Archiac & Verneuil, 1842 † accepted as Omphalocirrus goldfussii (d'Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
29. Species Euomphalus klobukowskii Mansuy, 1912 † accepted as Discotropis klobukowskii (Mansuy, 1912) † (unaccepted > superseded combination)
30. Species Euomphalus labadyei d'Archiac & Verneuil, 1842 † accepted as Nodeuomphalus labadyei (d'Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
31. Species Euomphalus laevis Archiac & Verneuil, 1842 † accepted as Straparollus laevis (Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
32. Species Euomphalus minutus Zieten, 1832 † accepted as Coelodiscus minutus (Zieten, 1832) † (unaccepted > superseded combination)
33. Species Euomphalus orbis Reuss, 1852 † accepted as Discohelix orbis (Reuss, 1852) †
34. Species Euomphalus ornata M. Hörnes, 1853 † accepted as Discohelix ornata (M. Hörnes, 1853) † (unaccepted > superseded combination)
35. Species Euomphalus qualteriatus (von Schlotheim, 1820) † accepted as Pararaphistoma qualteriatum (von Schlotheim, 1820) † (unaccepted > superseded combination)
36. Species Euomphalus radiatus Menke, 1851 accepted as Heliacus (Heliacus) areola bicanaliculatus (Valenciennes, 1832) represented as Heliacus areola bicanaliculatus (Valenciennes, 1832)
37. Species Euomphalus rectangulus Mansuy, 1913 † accepted as Discotropis klobukowskii (Mansuy, 1912) † (unaccepted > junior subjective synonym)
38. Species Euomphalus reussii M. Hörnes, 1853 † accepted as Pentagonodiscus reussii (M. Hörnes, 1853) † (unaccepted > superseded combination)
39. Species Euomphalus serpula Koninck, 1842 † accepted as Serpulospira serpula (Koninck, 1842) † (unaccepted > superseded combination)
40. Species Euomphalus solariformis Delpey, 1941 † accepted as Dichostasia solariformis (Delpey, 1941) † (unaccepted > superseded combination)
41. Species Euomphalus spiralis Münster, 1841 † accepted as Delphinula spiralis (Münster, 1841) † (unaccepted > superseded combination)
42. Species Euomphalus uniangulatus J. Hall, 1847 † accepted as Macluritella uniangulata (J. Hall, 1847) † (unaccepted > superseded combination)
43. Species Euomphalus archiaci Goldfuss, 1844 † (uncertain > unassessed)
44. Species Euomphalus basinodosus Kirchner, 1915 † (uncertain > unassessed)
45. Species Euomphalus bronnii Goldfuss, 1844 † (uncertain > unassessed)
46. Species Euomphalus circularis J. Phillips, 1841 † (uncertain > unassessed)
47. Species Euomphalus contrarius Münster, 1841 † (uncertain > unassessed)
48. Species Euomphalus depressus J. Hall, 1843 † (uncertain > unassessed)
49. Species Euomphalus discus Goldfuss, 1844 † (uncertain > unassessed)
50. Species Euomphalus disiunctus Goldfuss, 1844 † (uncertain > unassessed)
51. Species Euomphalus eurekensis Walcott, 1884 † (uncertain > unassessed)
52. Species Euomphalus gotlandicus Lindström, 1884 † (uncertain > unassessed)
53. Species Euomphalus gradatus Koken, 1896 † (uncertain > unassessed)
54. Species Euomphalus jiangyouensis Y.-T. Pan, 1978 † (uncertain > unassessed)
55. Species Euomphalus latus Y.-T. Pan, 1978 † (uncertain > unassessed)
56. Species Euomphalus majiaobaensis Y.-T. Pan, 1978 † (uncertain > unassessed)
57. Species Euomphalus minimus McCoy, 1847 † (uncertain > unassessed)
58. Species Euomphalus nitidulus Lindström, 1880 † (uncertain > unassessed)
59. Species Euomphalus obtusangulus Lindström, 1880 † (uncertain > unassessed)
60. Species Euomphalus planodorsatus Meek & Worthen, 1861 † (uncertain > unassessed)
61. Species Euomphalus planorbis d'Archiac & Verneuil, 1842 † (uncertain > unassessed)
62. Species Euomphalus praecursor Lindström, 1884 † (uncertain > unassessed)
63. Species Euomphalus pygmaeus Münster, 1841 † (uncertain > unassessed)
64. Species Euomphalus pygmaeus Dunker, 1848 † (uncertain > unassessed, invalid; not Münster, 1841)
65. Species Euomphalus rotula Goldfuss, 1844 † (uncertain > unassessed)
66. Species Euomphalus schnuri d'Archiac & Verneuil, 1842 † (uncertain > unassessed)
67. Species Euomphalus semiteres Goldfuss, 1844 † (uncertain > unassessed)
68. Species Euomphalus serpens J. Phillips, 1841 † (uncertain > unassessed)
69. Species Euomphalus spinosus Goldfuss, 1844 † (uncertain > unassessed)
70. Species Euomphalus strongi Whitfield, 1878 † (uncertain > taxon inquirendum)
71. Species Euomphalus triquetrus Lindström, 1884 † (uncertain > unassessed)
72. Species Euomphalus tuba Lindström, 1884 † (uncertain > unassessed)
73. Species Euomphalus umbilicatus Meek & Worthen, 1861 † (uncertain > unassessed)
74. Species Euomphalus vermilia Goldfuss, 1844 † (uncertain > unassessed)
75. Species Euomphalus vermis Whidborne, 1896 † (uncertain > unassessed)
76. Species Euomphalus verneuillii Goldfuss, 1844 † (uncertain > unassessed)
77. Species Euomphalus wahlenbergii Goldfuss, 1844 † (uncertain > unassessed)
78. Species Euomphalus walmstedti Lindström, 1884 † (uncertain > unassessed)

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