1. Species Trigonodus abdominalis Jelen, 1989 †
2. Species Trigonodus bittneri L. Waagen, 1907 †
3. Species Trigonodus carniolicus L. Waagen, 1907 †
4. Species Trigonodus costatus Wöhrmann & Koken, 1892 †
5. Species Trigonodus dieneri L. Waagen, 1907 †
6. Species Trigonodus extraordinarius Jelen, 1989 †
7. Species Trigonodus intermedius L. Waagen, 1907 †
8. Species Trigonodus productus Whiteaves, 1889 †
9. Species Trigonodus rablensis (Gredler, 1863) †
10. Species Trigonodus ramovsi Jelen, 1989 †
11. Species Trigonodus subrotundus J.-F. Xu, 1984 †
12. Species Trigonodus weiyuanensis J.-F. Xu, 1984 †
13. Species Trigonodus xiabolangensis J.-R. Yin & Grant-Mackie, 2005 †
14. Species Trigonodus liuyangensis Z.-W. Gu & L. Liu, 1976 † accepted as Lilingella (Xinyuella) liuyangensis (Z.-W. Gu & L. Liu, 1976) † represented as Lilingella liuyangensis (Z.-W. Gu & L. Liu, 1976) † (unaccepted > superseded combination)
15. Species Trigonodus sandbergeri Alberti, 1864 † accepted as Unio keuperinus H. A. C. Berger, 1854 † (unaccepted > junior subjective synonym)
16. Species Trigonodus thomsonianus Wilckens, 1927 † accepted as Agonisca thomsoniana (Wilckens, 1927) † (unaccepted > superseded combination)
17. Species Trigonodus balsamoi Parona, 1889 † (uncertain > unassessed)
18. Species Trigonodus brevidens L. Waagen, 1907 † (uncertain > unassessed)
19. Species Trigonodus carinatus H.-F. Yin & J.-R. Yin, 1983 † (uncertain > unassessed)
20. Species Trigonodus caudatus Linck, 1972 † (uncertain > unassessed)
21. Species Trigonodus compactus Linck, 1972 † (uncertain > unassessed)
22. Species Trigonodus elegans Linck, 1972 † (uncertain > unassessed)
23. Species Trigonodus jomdaensis Z.-M. Zhang, 1985 † (uncertain > unassessed)
24. Species Trigonodus lanpingensis F.-X. Guo, 1985 † (uncertain > unassessed)
25. Species Trigonodus marmolatae Salomon, 1895 † (uncertain > unassessed)
26. Species Trigonodus minutus Wöhrmann & Koken, 1892 † (uncertain > unassessed)
27. Species Trigonodus nudus Linck, 1972 † (uncertain > unassessed)
28. Species Trigonodus perovalis Linck, 1972 † (uncertain > unassessed)
29. Species Trigonodus postrablensis Frech, 1904 † (uncertain > unassessed)
30. Species Trigonodus praeco E. Philippi, 1898 † (uncertain > unassessed)
31. Species Trigonodus praelongus Kiparisova, 1937 † (uncertain > unassessed)
32. Species Trigonodus pseudanatinus Linck, 1972 † (uncertain > unassessed)
33. Species Trigonodus pygmaeus Linck, 1968 † (uncertain > unassessed)
34. Species Trigonodus rigidus Linck, 1972 † (uncertain > unassessed)
35. Species Trigonodus serianus Parona, 1889 † (uncertain > unassessed)
36. Species Trigonodus sichuanensis Z.-W. Gu, 1976 † (uncertain > unassessed)
37. Species Trigonodus singularis Linck, 1968 † (uncertain > unassessed)
38. Species Trigonodus subrhombus F.-X. Guo, 1985 † (uncertain > unassessed)
39. Species Trigonodus superior Loretz, 1875 † (uncertain > unassessed)
40. Species Trigonodus tenuidentatus Lerman, 1960 † (uncertain > unassessed)
41. Species Trigonodus wuerttembergicus Linck, 1968 † (uncertain > unassessed)
42. Species Trigonodus yunnanensis F.-X. Guo, 1985 † (uncertain > unassessed)

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