1. Species Selaginopsis affinis Jäderholm, 1904 accepted as Staurotheca affinis (Jäderholm, 1904) (basionym)
2. Species Selaginopsis allmani Norman, 1878 accepted as Thuiaria allmani (Norman, 1878) (basionym)
3. Species Selaginopsis alternitheca (Levinsen, 1893) accepted as Thuiaria alternitheca Levinsen, 1893
4. Species Selaginopsis arctica Bonnevie, 1899 accepted as Thuiaria arctica (Bonnevie, 1899) (unaccepted > superseded combination)
5. Species Selaginopsis constans Fraser, 1948 accepted as Thuiaria constans (Fraser, 1948) (basionym)
6. Species Selaginopsis cylindrica (Clark, 1876) accepted as Thuiaria cylindrica Clark, 1877 (synonym)
7. Species Selaginopsis decemserialis Mereschkowsky, 1878 accepted as Thuiaria decemserialis (Merezhkovskii, 1878) (unaccepted > superseded combination)
8. Species Selaginopsis dichotoma Jäderholm, 1904 accepted as Staurotheca jaederholmi Stechow, 1920 (secondary homonym of Staurotheca dichotoma Allman, 1888)
9. Species Selaginopsis fusca Allman, 1876 accepted as Selaginopsis allmani Norman, 1878 accepted as Thuiaria allmani (Norman, 1878) (homonym of Selaginopsis fusca (Johnson, 1847))
10. Species Selaginopsis fusca (Johnston, 1847) accepted as Abietinaria fusca (Johnston, 1847)
11. Species Selaginopsis hartlaubi Nutting, 1904 accepted as Thuiaria hartlaubi (Nutting, 1904) (basionym)
12. Species Selaginopsis juncea Vanhöffen, 1910 accepted as Staurotheca juncea (Vanhöffen, 1910) (unaccepted > superseded combination)
13. Species Selaginopsis mirabilis (Verrill, 1873) accepted as Sertularia mirabilis (Verrill, 1873) accepted as Pericladium mirabilis (Verrill, 1873)
14. Species Selaginopsis obsoleta (Lepechin, 1781) accepted as Thuiaria obsoleta (Lepechin, 1781) (unaccepted combination)
15. Species Selaginopsis ochotensis Mereschkowsky, 1878 accepted as Thuiaria ochotensis (Mereschkowsky, 1878) (basionym)
16. Species Selaginopsis ornata Nutting, 1904 accepted as Thuiaria cylindrica Clark, 1877 (synonym)
17. Species Selaginopsis pachyclada Jäderholm, 1904 accepted as Staurotheca pachyclada (Jäderholm, 1904) (unaccepted > superseded combination)
18. Species Selaginopsis pacifica Mereschkowsky, 1878 accepted as Thuiaria cedrina (Linnaeus, 1758) (synonym)
19. Species Selaginopsis pinaster (Lepechin, 1783) accepted as Thuiaria pinaster (Lepechin, 1783) (genus transfer)
20. Species Selaginopsis pinnata Mereschkowsky, 1878 accepted as Thuiaria cylindrica Clark, 1877 (synonym)
21. Species Selaginopsis plumiformis Nutting, 1904 accepted as Thuiaria plumiformis (Nutting, 1904) (unaccepted > superseded combination, synonym)
22. Species Selaginopsis purpurea (Linnaeus, 1758) accepted as Thuiaria purpurea (Linnaeus, 1758) (synonym)
23. Species Selaginopsis trilateralis Fraser, 1936 accepted as Thuiaria trilateralis (Fraser, 1936) accepted as Pericladium trilaterale (Fraser, 1936) (synonym)
24. Species Selaginopsis triserialis Mereschowsky, 1878 accepted as Thuiaria triserialis (Meresckowsky, 1878) (basionym)
25. Species Selaginopsis urceolifera Kirchenpauer, 1884 accepted as Staurotheca urceolifera (Kirchenpauer, 1884)
26. Species Selaginopsis vanhoeffeni Peña Cantero & García Carrascosa, 1994 accepted as Staurotheca vanhoeffeni (Peña Cantero & García Carrascosa, 1994) (synonym)

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