1. Species Euomphalus acutus (J. Sowerby, 1816) †
2. Species Euomphalus africanum (Heidelberger, Korn & Ebbighausen, 2009) †
3. Species Euomphalus amaenus de Koninck, 1881 †
4. Species Euomphalus ammon C. A. White & Whitfield, 1862 †
5. Species Euomphalus asanoi (Kase, 1988) †
6. Species Euomphalus brooksensis (Yochelson & Dutro, 1960) †
7. Species Euomphalus catilliformis de Koninck, 1881 †
8. Species Euomphalus cornudanus (Shumard, 1859) †
9. Species Euomphalus crotalostomus McCoy, 1844 †
10. Species Euomphalus illinoisensis (Thein & Nitecki, 1974) †
11. Species Euomphalus intermedius (M. Gordon & Yochelson, 1983) †
12. Species Euomphalus kaibabensis Chronic, 1952 †
13. Species Euomphalus konobasis (Jeffery, Hoare, Mapes & C. J. Brown, 1994) †
14. Species Euomphalus latus J. Hall, 1858 †
15. Species Euomphalus luxus C. A. White, 1877 †
16. Species Euomphalus mapingensis (Grabau, 1936) †
17. Species Euomphalus marginatiformis (B. K. Likharev, 1967) †
18. Species Euomphalus marginatus Eichwald, 1860 † (accepted > unreplaced junior homonym, junior homonym of Euomphalus marginatus McCoy, 1844)
19. Species Euomphalus moniliferus Romanovsky, 1890 †
20. Species Euomphalus obtusus J. Hall, 1858 †
21. Species Euomphalus pancakensis (Mount, 1973) †
22. Species Euomphalus pentangulatus J. Sowerby, 1814 †
23. Species Euomphalus peskensis (Mazaev, 1994) †
24. Species Euomphalus pirochiensis (Mazaev, 1994) †
25. Species Euomphalus pronodocarinatus Y.-T. Pan & W. Yu, 1993 †
26. Species Euomphalus pugilis J. Phillips, 1836 †
27. Species Euomphalus roberti C. A. White, 1862 †
28. Species Euomphalus rotundus (H.-J. Wang, 1982) † (accepted > unreplaced junior homonym, secondary homonym of Euomphalus rotundus Parks, 1915)
29. Species Euomphalus similis (F. B. Meek & Worthen, 1861) †
30. Species Euomphalus springvalensis C. A. White, 1876 †
31. Species Euomphalus subplanus J. Hall, 1852 †
32. Species Euomphalus subsulcatus (Knight, 1934) † (accepted > unreplaced junior homonym, junior homonym of Euomphalus subsulcatus Hisinger, 1837)
33. Species Euomphalus tenuistriatus X.-G. Zhu, 1995 †
34. Species Euomphalus utahensis (J. Hall & Whitfield, 1877) †
35. Species Euomphalus variabilis (Jeffery, Hoare, Mapes & C. J. Brown, 1994) †
36. Species Euomphalus xylacus (M. Gordon & Yochelson, 1977) †
37. Species Euomphalus amarus de Koninck, 1881 † (uncertain > unassessed)
38. Species Euomphalus archiaci Goldfuss, 1844 † (uncertain > unassessed)
39. Species Euomphalus basinodosus Kirchner, 1915 † (uncertain > unassessed)
40. Species Euomphalus bifrons J. Phillips, 1836 † (uncertain > unassessed)
41. Species Euomphalus bronnii Goldfuss, 1844 † (uncertain > unassessed)
42. Species Euomphalus calyx J. Phillips, 1836 † (uncertain > unassessed)
43. Species Euomphalus catenulatus Hisinger, 1837 † (uncertain > unassessed)
44. Species Euomphalus catillus J. Sowerby, 1814 † (uncertain > unassessed)
45. Species Euomphalus circularis J. Phillips, 1841 † (uncertain > unassessed)
46. Species Euomphalus contrarius Münster, 1841 † (uncertain > unassessed)
47. Species Euomphalus deliquus de Koninck, 1881 † (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 disjunctus J. Hall, 1859 † (uncertain > unassessed, junior homonym of Euomphalus disiunctus [sic] Goldfuss, 1844 (ICZN Art. 58.3))
52. Species Euomphalus elegans de Koninck, 1881 † (uncertain > unassessed)
53. Species Euomphalus elongatus McCoy, 1844 † (uncertain > unassessed)
54. Species Euomphalus eurekensis Walcott, 1884 † (uncertain > unassessed)
55. Species Euomphalus gradatus de Koninck, 1881 † (uncertain > unassessed)
56. Species Euomphalus jiangyouensis Y.-T. Pan, 1978 † (uncertain > unassessed)
57. Species Euomphalus kokeni Cossmann, 1916 † (uncertain > unassessed)
58. Species Euomphalus laetus de Koninck, 1881 † (uncertain > unassessed)
59. Species Euomphalus latus Y.-T. Pan, 1978 † (uncertain > unassessed, junior homonym of Euomphalus latus J. Hall, 1858)
60. Species Euomphalus majiaobaensis Y.-T. Pan, 1978 † (uncertain > unassessed)
61. Species Euomphalus marginatus McCoy, 1844 † (uncertain > unassessed)
62. Species Euomphalus minimus McCoy, 1847 † (uncertain > unassessed)
63. Species Euomphalus mitis de Koninck, 1881 † (uncertain > unassessed)
64. Species Euomphalus nitidulus Lindström, 1880 † (uncertain > unassessed)
65. Species Euomphalus nodosus J. Sowerby, 1814 † (uncertain > unassessed)
66. Species Euomphalus obtusangulus Lindström, 1880 † (uncertain > unassessed)
67. Species Euomphalus planispira J. Hall, 1858 † (uncertain > unassessed)
68. Species Euomphalus planodorsatus F. B. Meek & Worthen, 1861 † (uncertain > unassessed)
69. Species Euomphalus planorbis d'Archiac & Verneuil, 1842 † (uncertain > unassessed)
70. Species Euomphalus praecursor Lindström, 1884 † (uncertain > unassessed)
71. Species Euomphalus pygmaeus Münster, 1841 † (uncertain > unassessed)
72. Species Euomphalus pygmaeus Dunker, 1848 † (uncertain > unassessed, invalid; not Münster, 1841)
73. Species Euomphalus quadrivolvis J. Hall, 1858 † (uncertain > unassessed)
74. Species Euomphalus rotula Goldfuss, 1844 † (uncertain > unassessed)
75. Species Euomphalus schnuri d'Archiac & Verneuil, 1842 † (uncertain > unassessed)
76. Species Euomphalus semiteres Goldfuss, 1844 † (uncertain > unassessed)
77. Species Euomphalus serpens J. Phillips, 1841 † (uncertain > unassessed)
78. Species Euomphalus sinuatus J. Hall, 1859 † (uncertain > unassessed)
79. Species Euomphalus spergenensis J. Hall, 1858 † (uncertain > unassessed)
80. Species Euomphalus spinosus Goldfuss, 1844 † (uncertain > unassessed)
81. Species Euomphalus strongi Whitfield, 1878 † (uncertain > taxon inquirendum)
82. Species Euomphalus subpentagonalis de Koninck, 1881 † (uncertain > unassessed)
83. Species Euomphalus subsulcatus Hisinger, 1837 † (uncertain > unassessed)
84. Species Euomphalus triquetrus Lindström, 1884 † (uncertain > unassessed)
85. Species Euomphalus tuba Lindström, 1884 † (uncertain > unassessed)
86. Species Euomphalus umbilicatus F. B. Meek & Worthen, 1861 † (uncertain > unassessed)
87. Species Euomphalus vermilia Goldfuss, 1844 † (uncertain > unassessed)
88. Species Euomphalus vermis Whidborne, 1896 † (uncertain > unassessed)
89. Species Euomphalus verneuillii Goldfuss, 1844 † (uncertain > unassessed)
90. Species Euomphalus wahlenbergii Goldfuss, 1844 † (uncertain > unassessed)
91. Species Euomphalus walmstedti Lindström, 1884 † (uncertain > unassessed)
92. 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)
93. Subgenus Euomphalus (Omalogyra) Jeffreys, 1859 accepted as Omalogyra Jeffreys, 1859 (original rank)
94. Subgenus Euomphalus (Omphalotrochus) F. B. Meek, 1864 † accepted as Omphalotrochus F. B. Meek, 1864 † (unaccepted > superseded rank)
    1. Species Euomphalus (Omphalotrochus) whitneyi F. B. Meek, 1864 † accepted as Omphalotrochus whitneyi (F. B. Meek, 1864) † (unaccepted > superseded combination)
95. Subgenus Euomphalus (Straparollus) Montfort, 1810 † accepted as Straparollus Montfort, 1810 † (unaccepted > superseded rank)
    1. Species Euomphalus (Straparollus) ophirensis J. Hall & Whitfield, 1877 † accepted as Straparollus ophirensis (J. Hall & Whitfield, 1877) † (unaccepted > superseded combination)
    2. Species Euomphalus (Straparollus) utahensis J. Hall & Whitfield, 1877 † accepted as Euomphalus utahensis (J. Hall & Whitfield, 1877) † (subgenus not accepted)
96. 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)
97. Species Euomphalus amoenus [sic] † accepted as Euomphalus amaenus de Koninck, 1881 † (unaccepted > misspelling - incorrect subsequent spelling)
98. Species Euomphalus ampezzanus Zardini, 1978 † accepted as Rinaldoconchus ampezzanus (Zardini, 1978) † (unaccepted > superseded combination)
99. Species Euomphalus angelini Lindström, 1884 † accepted as Lytospira angelini (Lindström, 1884) † (unaccepted > superseded combination)
100. Species Euomphalus anguis M'Coy, 1844 † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > junior subjective synonym)
101. Species Euomphalus aries Laube, 1868 † accepted as Cortinella aries (Laube, 1868) † (unaccepted > superseded combination)
102. Species Euomphalus canaliculatus Trautschold, 1879 † accepted as Omphalotrochus canaliculatus (Trautschold, 1879) † (basionym)
103. Species Euomphalus carinifer Koken, 1896 † accepted as Euomphalopterus carinifer (Koken, 1896) † (unaccepted > superseded combination)
104. Species Euomphalus centrifugalis Chapman, 1916 † accepted as Tropidodiscus centrifugalis (Chapman, 1916) † (unaccepted > superseded combination)
105. Species Euomphalus circinalis Goldfuss, 1844 † accepted as Goldfussoceras circinalis (Goldfuss, 1844) † (unaccepted > superseded combination)
106. Species Euomphalus cristatus J. Phillips, 1836 † accepted as Phanerotinus cristatus (J. Phillips, 1836) † (unaccepted > superseded combination)
107. Species Euomphalus cyclostomus J. Hall, 1858 † accepted as Straparollus cyclostomus (J. Hall, 1858) † (unaccepted > superseded combination)
108. Species Euomphalus dionysii (de Koninck, 1843) † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > superseded combination)
109. Species Euomphalus discors J. De C. Sowerby, 1814 † accepted as Poleumita discors (J. De C. Sowerby, 1814) † (unaccepted > superseded combination)
110. Species Euomphalus excavatus Reuss, 1852 † accepted as Discohelix excavata (Reuss, 1852) † (unaccepted > superseded combination)
111. Species Euomphalus fallax de Koninck, 1843 † accepted as Straparella fallax (de Koninck, 1843) † (unaccepted > superseded combination)
112. Species Euomphalus ferox Gümbel, 1861 † accepted as Discohelix ferox (Gümbel, 1861) † (unaccepted > superseded combination)
113. Species Euomphalus goldfussi [sic] † accepted as Omphalocirrus goldfussii (d'Archiac & Verneuil, 1842) † (unaccepted > misspelling - incorrect subsequent spelling)
114. Species Euomphalus goldfussii d'Archiac & Verneuil, 1842 † accepted as Omphalocirrus goldfussii (d'Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
115. Species Euomphalus gotlandicus Lindström, 1884 † accepted as Pachystrophia gotlandica (Lindström, 1884) † (unaccepted > superseded combination)
116. Species Euomphalus gradatus Koken, 1896 † accepted as Palaeomphalus gradatus (Koken, 1896) † (unaccepted > superseded combination)
117. Species Euomphalus increscens (Eichwald, 1840) † accepted as Eccyliopterus increscens (Eichwald, 1840) † (unaccepted > superseded combination)
118. Species Euomphalus klobukowskii Mansuy, 1912 † accepted as Discotropis klobukowskii (Mansuy, 1912) † (unaccepted > superseded combination)
119. Species Euomphalus labadyei d'Archiac & Verneuil, 1842 † accepted as Nodeuomphalus labadyei (d'Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
120. Species Euomphalus laevis Archiac & Verneuil, 1842 † accepted as Straparollus laevis (Archiac & Verneuil, 1842) † (unaccepted > superseded combination)
121. Species Euomphalus marginalis (Eichwald, 1840) † accepted as Lesueurilla marginalis (Eichwald, 1840) † (unaccepted > superseded combination)
122. Species Euomphalus minutus Zieten, 1832 † accepted as Coelodiscus minutus (Zieten, 1832) † (unaccepted > superseded combination)
123. Species Euomphalus orbis Reuss, 1852 † accepted as Discohelix orbis (Reuss, 1852) †
124. Species Euomphalus ornata M. Hörnes, 1853 † accepted as Discohelix ornata (M. Hörnes, 1853) † (unaccepted > superseded combination)
125. Species Euomphalus qualteriatus (von Schlotheim, 1820) † accepted as Pararaphistoma qualteriatum (von Schlotheim, 1820) † (unaccepted > superseded combination)
126. Species Euomphalus radiatus Menke, 1851 accepted as Heliacus (Heliacus) areola bicanaliculatus (Valenciennes, 1832) represented as Heliacus areola bicanaliculatus (Valenciennes, 1832)
127. Species Euomphalus rectangulus Mansuy, 1913 † accepted as Discotropis klobukowskii (Mansuy, 1912) † (unaccepted > junior subjective synonym)
128. Species Euomphalus reussii M. Hörnes, 1853 † accepted as Pentagonodiscus reussii (M. Hörnes, 1853) † (unaccepted > superseded combination)
129. Species Euomphalus serpula de Koninck, 1842 † accepted as Serpulospira serpula (de Koninck, 1842) † (unaccepted > superseded combination)
130. Species Euomphalus solariformis Delpey, 1941 † accepted as Dichostasia solariformis (Delpey, 1941) † (unaccepted > superseded combination)
131. Species Euomphalus spiralis Münster, 1841 † accepted as Delphinula spiralis (Münster, 1841) † (unaccepted > superseded combination)
132. Species Euomphalus uniangulatus J. Hall, 1847 † accepted as Macluritella uniangulata (J. Hall, 1847) † (unaccepted > superseded combination)

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