1. Species Schizodus alpinus (J. Hall, 1858) †
2. Species Schizodus altus Newell & Boyd, 1975 †
3. Species Schizodus amplus Meek & Worthen, 1870 †
4. Species Schizodus appressus (Conrad, 1842) †
5. Species Schizodus arrondoi González, 1992 †
6. Species Schizodus bifidus Ciriacks, 1963 †
7. Species Schizodus canalis C. C. Branson, 1930 †
8. Species Schizodus compressus Beede, 1900 † (accepted > unreplaced junior homonym, junior homonym of Schizodus compressus W. Waagen, 1881)
9. Species Schizodus cuneus J. Hall, 1883 †
10. Species Schizodus deltoideus (J. Phillips, 1841) †
11. Species Schizodus fitzroyensis Dickins, 1963 †
12. Species Schizodus jiangheensis Y.-J. Lu, 1986 †
13. Species Schizodus kennedyensis Dickins, 1957 †
14. Species Schizodus meekanus Girty, 1899 †
15. Species Schizodus obscurus (J. Sowerby, 1821) †
16. Species Schizodus occidentalis Reed, 1930 †
17. Species Schizodus rhombeus (J. Hall, 1843) † (accepted > unreplaced junior homonym, junior homonym of Cypricardia rhombea J. Phillips, 1836)
18. Species Schizodus rotundatus (T. Brown, 1841) †
19. Species Schizodus sandimanensis Dickins, 1963 †
20. Species Schizodus subovatus Ciriacks, 1963 †
21. Species Schizodus subtrigonatus (Airaghi, 1907) †
22. Species Schizodus supaiensis Winters, 1963 †
23. Species Schizodus texanus Clifton, 1942 †
24. Species Schizodus trigonalis Sayre, 1930 †
25. Species Schizodus ulrichi Worthen, 1890 †
26. Species Schizodus wheeleri (Swallow, 1863) †
27. Species Schizodus wyomingensis Newell & Boyd, 1975 †
28. Subgenus Schizodus (Cytherodon) J. Hall & Whitfield, 1873 † accepted as Cytherodon J. Hall & Whitfield, 1873 † accepted as Schizodus W. King, 1845 † (unaccepted > superseded rank)
    1. Species Schizodus (Cytherodon) orbicularis Walcott, 1884 † (uncertain > unassessed)
29. Subgenus Schizodus (Prisconaia) Conrad, 1867 † accepted as Schizodus W. King, 1845 † (unaccepted > junior subjective synonym)
    1. Species Schizodus (Prisconaia) perelegans Meek & Worthen, 1870 † (uncertain > unassessed)
30. Subgenus Schizodus (Protoschizodus) de Koninck, 1885 † accepted as Schizodus W. King, 1845 † (unaccepted > junior subjective synonym)
    1. Species Schizodus (Protoschizodus) palaeoneiliformis Herrick, 1888 † (uncertain > unassessed)
31. Species Schizodus aequalis J. Hall, 1885 † accepted as Schizodus chemungensis var. aequalis (J. Hall, 1885) † (unaccepted > superseded rank)
32. Species Schizodus chemungensis (Conrad, 1842) † accepted as Eoschizodus chemungensis (Conrad, 1842) † (unaccepted > superseded combination)
33. Species Schizodus concinnus C. C. Branson, 1930 † accepted as Scaphellina concinna (C. C. Branson, 1930) † (unaccepted > superseded combination)
34. Species Schizodus ellipticus J. Hall & Whitfield, 1870 † accepted as Eoschizodus chemungensis (Conrad, 1842) † (unaccepted > junior subjective synonym, tentative junior subjective synonym)
35. Species Schizodus mocamboensis Anelli, 1994 † (unaccepted > nomen nudum, proposed in an unpublished PhD thesis)
36. Species Schizodus mooresi S. A. Miller, 1889 † accepted as Schizodus amplus Meek & Worthen, 1870 † (unaccepted > junior subjective synonym)
37. Species Schizodus oklahomaensis Beede, 1907 † accepted as Lyroschizodus oklahomensis (Beede, 1907) † (unaccepted > superseded combination)
38. Species Schizodus phosphoriensis C. C. Branson, 1930 † accepted as Scaphellina concinna (C. C. Branson, 1930) † (unaccepted > junior subjective synonym)
39. Species Schizodus planus Golovkinski, 1869 † accepted as Oriocrassatella plana (Golovkinski, 1869) † (unaccepted > superseded combination)
40. Species Schizodus symmetricus Calvin, 1890 † accepted as Schizodus alpinus (J. Hall, 1858) † (unaccepted > junior subjective synonym)
41. Species Schizodus transversus Beushausen, 1884 † accepted as Schizodus (Toechomya) transversus Beushausen, 1884 † (unaccepted > superseded combination)
42. Subgenus Schizodus (Toechomya) J. M. Clarke, 1899 † (uncertain > taxon inquirendum)
    1. Species Schizodus (Toechomya) freitasi J. M. Clarke, 1899 † (uncertain > unassessed)
    2. Species Schizodus (Toechomya) rathbuni J. M. Clarke, 1899 † (uncertain > unassessed)
    3. Species Schizodus (Toechomya) transversus Beushausen, 1884 † (uncertain > taxon inquirendum)
43. Species Schizodus affinis Herrick, 1887 † (uncertain > unassessed)
44. Species Schizodus alpinus Winkler, 1859 † (uncertain > unassessed)
45. Species Schizodus amazonicus J. C. Mendes, 1966 † (uncertain > unassessed)
46. Species Schizodus batesvillensis Weller, 1897 † (uncertain > unassessed)
47. Species Schizodus brannerianus Girty, 1915 † (uncertain > unassessed)
48. Species Schizodus brodicus Nalivkin, 1960 † (uncertain > unassessed)
49. Species Schizodus chesterensis Meek & Worthen, 1861 † (uncertain > unassessed)
50. Species Schizodus circulus Worthen, 1884 † (uncertain > unassessed)
51. Species Schizodus compressus W. Waagen, 1881 † (uncertain > unassessed, status in recent literature not researched by editor)
52. Species Schizodus contractus J. Hall, 1885 † (uncertain > unassessed)
53. Species Schizodus cuneatus Meek, 1875 † (uncertain > unassessed)
54. Species Schizodus curtiformis Walcott, 1884 † (uncertain > unassessed)
55. Species Schizodus curtus Meek & Worthen, 1866 † (uncertain > unassessed)
56. Species Schizodus degener J. Hall, 1885 † (uncertain > unassessed)
57. Species Schizodus deparcus Walcott, 1884 † (uncertain > unassessed)
58. Species Schizodus depressus Worthen, 1884 † (uncertain > unassessed)
59. Species Schizodus devonicus Verneuil, 1845 † (uncertain > unassessed)
60. Species Schizodus dianensis F.-X. Guo, 1985 † (uncertain > unassessed)
61. Species Schizodus dubiiformis W. Waagen, 1881 † (uncertain > unassessed, status in recent literature not researched by editor)
62. Species Schizodus ejneqiensis B.-D. Shi, 1983 † (uncertain > unassessed)
63. Species Schizodus elongatus Beushausen, 1884 † (uncertain > unassessed, junior homonym of Schizodus elongatus Guembel, 1861)
64. Species Schizodus elongatus Gümbel, 1861 † (uncertain > unassessed)
65. Species Schizodus elongatus Grabau, 1931 † (uncertain > unassessed, junior homonym of Schizodus elongatus Gümbel, 1861 and S. elongatus Beushausen, 1884)
66. Species Schizodus eminens J. Hall, 1885 † (uncertain > unassessed)
67. Species Schizodus fallax Beushausen, 1884 † (uncertain > unassessed)
68. Species Schizodus ferrieri Girty, 1910 † (uncertain > unassessed)
69. Species Schizodus gapeevi Fedotov, 1932 † (uncertain > unassessed)
70. Species Schizodus guizhouensis L. Liu & J.-T. Xu, 1976 † (uncertain > unassessed)
71. Species Schizodus harii S. A. Miller, 1892 † (uncertain > unassessed)
72. Species Schizodus harlamensis Herrick, 1888 † (uncertain > unassessed)
73. Species Schizodus hedongensis L. Liu, 1976 † (uncertain > unassessed)
74. Species Schizodus hengshanensis R.-J. Zhang, 1977 † (uncertain > unassessed)
75. Species Schizodus insignis N. F. Drake, 1897 † (uncertain > unassessed)
76. Species Schizodus jakovlevi Fedotov, 1932 † (uncertain > unassessed)
77. Species Schizodus jiangxiensis J.-H. Li & B.-L. Ding, 1982 † (uncertain > unassessed)
78. Species Schizodus judicensis Scalia, 1912 † (uncertain > unassessed)
79. Species Schizodus kefersteini Beushausen, 1884 † (uncertain > unassessed)
80. Species Schizodus kobayashii Ichikawa, 1951 † (uncertain > unassessed)
81. Species Schizodus lianyuanensis R.-J. Zhang, 1977 † (uncertain > unassessed)
82. Species Schizodus licharewi Kulikov, 1967 † (uncertain > unassessed)
83. Species Schizodus lopingensis Kayser, 1883 † (uncertain > unassessed)
84. Species Schizodus lutugini Fedotov, 1932 † (uncertain > unassessed)
85. Species Schizodus magnus Worthen, 1884 † (uncertain > unassessed)
86. Species Schizodus malani Mansuy, 1912 † (uncertain > unassessed)
87. Species Schizodus medinaensis Meek, 1871 † (uncertain > unassessed)
88. Species Schizodus nauvcoensis Worthen, 1884 † (uncertain > unassessed)
89. Species Schizodus newarkensis Herrick, 1888 † (uncertain > unassessed)
90. Species Schizodus obrotundatus Beushausen, 1884 † (uncertain > unassessed)
91. Species Schizodus ovalis W. Keferstein, 1841 † (uncertain > unassessed)
92. Species Schizodus pandatus Girty, 1899 † (uncertain > unassessed)
93. Species Schizodus patulus J. Hall, 1885 † (uncertain > unassessed)
94. Species Schizodus paucus González, 1977 † (uncertain > unassessed)
95. Species Schizodus peregrinus Beushausen, 1889 † (uncertain > unassessed)
96. Species Schizodus pinguis W. Waagen, 1881 † (uncertain > unassessed, status in recent literature not researched by editor)
97. Species Schizodus pintoensis Walcott, 1884 † (uncertain > unassessed)
98. Species Schizodus qijiagouensis Z.-R. Yang, 1983 † (uncertain > unassessed)
99. Species Schizodus radiatus Ichikawa, 1951 † (uncertain > unassessed)
100. Species Schizodus randolphensis Worthen, 1890 † (uncertain > unassessed)
101. Species Schizodus rossicus Verneuil, 1845 † (uncertain > unassessed)
102. Species Schizodus rubio Barrois, 1882 † (uncertain > unassessed)
103. Species Schizodus sedaliensis S. A. Miller & Gurley, 1896 † (uncertain > unassessed)
104. Species Schizodus shandongensis L. Liu, 1976 † (uncertain > unassessed)
105. Species Schizodus shansiensis Chao, 1927 † (uncertain > unassessed)
106. Species Schizodus shiqiantanensis Z.-R. Yang, 1983 † (uncertain > unassessed)
107. Species Schizodus sinensis L. Liu, 1976 † (uncertain > unassessed)
108. Species Schizodus spellmani Herrick, 1887 † (uncertain > unassessed)
109. Species Schizodus subcircularis Herrick, 1887 † (uncertain > unassessed)
110. Species Schizodus subquadratus Grabau, 1931 † (uncertain > unassessed)
111. Species Schizodus subtrigonalis Meek, 1871 † (uncertain > unassessed)
112. Species Schizodus tatingensis Grabau, 1934 † (uncertain > unassessed)
113. Species Schizodus telliniformis Girty, 1899 † (uncertain > unassessed)
114. Species Schizodus triangularis Swallow, 1858 † (uncertain > unassessed)
115. Species Schizodus truncatus W. King, 1848 † (uncertain > unassessed)
116. Species Schizodus tschernjaki Muromtseva, 1974 † (uncertain > unassessed)
117. Species Schizodus varsoviensis Worthen, 1884 † (uncertain > unassessed)
118. Species Schizodus ventricosus (Conrad, 1867) † (uncertain > unassessed)

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