1. Subgenus Tryblidium (Pilina) Koken, 1925 † accepted as Pilina Koken, 1925 † (unaccepted > superseded rank)
2. Species Tryblidium acutum Whitfield, 1889 † accepted as Proplina acutum (Whitfield, 1889) † (unaccepted > superseded combination)
3. Species Tryblidium aduncum Berkey, 1898 † accepted as Proplina cornutaforme (Walcott, 1879) † (a junior synonym)
4. Species Tryblidium arcticum Poulsen, 1974 †
5. Species Tryblidium barabuensis (Whitfield, 1878) † accepted as Metoptoma barabuensis Whitfield, 1878 † accepted as Proplina barabuensis (Whitfield, 1878) † (unaccepted > superseded combination)
6. Species Tryblidium canadense Whiteaves, 1884 † accepted as Guelphinacella canadense (Whiteaves, 1884) † (unaccepted > superseded combination)
7. Species Tryblidium convexum Berkey, 1898 † accepted as Proplina convexum (Berkey, 1898) † (unaccepted > superseded combination)
8. Species Tryblidium cornutaforme (Walcott, 1879) † accepted as Proplina cornutaforme (Walcott, 1879) † (superseded combination)
9. Species Tryblidium corpulentum Berkey, 1898 † accepted as Proplina corpulentum (Berkey, 1898) † (original combination)
10. Species Tryblidium erato (Billings, 1865) †
11. Species Tryblidium esthonum Koken, 1897 † accepted as Pilina esthonum (Koken, 1897) † (unaccepted > superseded combination)
12. Species Tryblidium eubule (Billings, 1865) †
13. Species Tryblidium exserta Sardeson, 1892 †
14. Species Tryblidium extensum Berkey, 1898 † accepted as Proplina extensum (Berkey, 1898) † (basionym)
15. Species Tryblidium hyrie (Billings, 1865) †
16. Species Tryblidium indianense S. A. Miller, 1892 † accepted as Archinacella indianensis (S. A. Miller, 1892) † (unaccepted > superseded combination)
17. Species Tryblidium modestum Ulrich & Scofield, 1897 †
18. Species Tryblidium niobe (Billings, 1862) †
19. Species Tryblidium nycteis (Billings, 1862) †
20. Species Tryblidium ovale Whitfield, 1886 †
21. Species Tryblidium ovatum Whitfield, 1886 †
22. Species Tryblidium ovoideum Perner, 1925 † accepted as Pilina ovoidea (Perner, 1925) † (unaccepted > superseded combination)
23. Species Tryblidium patulum Cleland, 1903 † (uncertain > taxon inquirendum)
24. Species Tryblidium pileolum Whitfield, 1889 † accepted as Archinacella pileolum (Whitfield, 1889) † (unaccepted > superseded combination)
25. Species Tryblidium radiatum Lindström, 1884 † accepted as Helcionopsis radiatum (Lindström, 1884) † (unaccepted > superseded combination)
26. Species Tryblidium rectilaterale Berkey, 1898 † accepted as Kirengella rectilateralis (Berkey, 1898) † (basionym)
27. Species Tryblidium reticulatum Angelin & Lindström, 1880 †
28. Species Tryblidium rugosum Bradley, 1930 †
29. Species Tryblidium simplex Whitfield, 1886 †
30. Species Tryblidium thorsteinssoni Boucot, 1975 †
31. Species Tryblidium unguis Lindström, 1880 † accepted as Pilina unguis (Lindström, 1880) † (unaccepted > superseded combination)
32. Species Tryblidium validum Sardeson, 1892 † accepted as Archinacella valida (Sardeson, 1892) † (unaccepted > superseded combination)

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