1. Species Pachyodon agrestis T. Brown, 1843 † accepted as Carbonicola acuta (J. Sowerby, 1813) † (unaccepted > junior subjective synonym)
2. Species Pachyodon aldamii T. Brown, 1843 † accepted as Carbonicola aldamii (T. Brown, 1843) † (unaccepted > superseded combination)
3. Species Pachyodon antiquus T. Brown, 1843 † accepted as Carbonicola senex (T. Brown, 1849) † (unaccepted > junior homonym, junior secondary homonym of Unio antiquus J. de C. Sowerby, 1828; Unio senex is a replacement name)
4. Species Pachyodon attenuatus Stutchbury, 1842 † accepted as Cardinia nilssoni (F. C. L. Koch & Dunker, 1837) † (unaccepted > junior subjective synonym)
5. Species Pachyodon bipennis T. Brown, 1843 † accepted as Carbonicola bipennis (T. Brown, 1843) † (unaccepted > superseded combination)
6. Species Pachyodon dawsonae [sic] † accepted as Pachyodon dawsoni T. Brown, 1843 † accepted as Anthracosphaerium dawsoni (T. Brown, 1843) † (unaccepted > misspelling - incorrect subsequent spelling)
7. Species Pachyodon dawsoni T. Brown, 1843 † accepted as Anthracosphaerium dawsoni (T. Brown, 1843) † (unaccepted > superseded combination)
8. Species Pachyodon embletoni T. Brown, 1843 † accepted as Carbonicola embletoni (T. Brown, 1843) † (unaccepted > superseded combination)
9. Species Pachyodon exoletus T. Brown, 1843 † accepted as Carbonicola acuta (J. Sowerby, 1813) † (unaccepted > junior subjective synonym)
10. Species Pachyodon lanceolata Stutchbury, 1842 † accepted as Cardinia lanceolata (Stutchbury, 1842) † (unaccepted > superseded combination)
11. Species Pachyodon lateralis T. Brown, 1843 † accepted as Anthracosia lateralis (T. Brown, 1843) † (unaccepted > superseded combination)
12. Species Pachyodon levedensis T. Brown, 1843 † accepted as Carbonicola acuta (J. Sowerby, 1813) † (unaccepted > junior subjective synonym)
13. Species Pachyodon nanus T. Brown, 1843 † accepted as Carbonicola similis (T. Brown, 1843) † (subjective synonym)
14. Species Pachyodon nucleus T. Brown, 1843 † (suppressed under plenary powers for the purpose of priority but not homonymy)
15. Species Pachyodon ovalis Stutchbury, 1842 † accepted as Cardinia ovalis (Stutchbury, 1842) † (unaccepted > superseded combination)
16. Species Pachyodon pyramidatus T. Brown, 1843 † accepted as Carbonicola pyramidata (T. Brown, 1843) † (unaccepted > superseded combination)
17. Species Pachyodon rhindii T. Brown, 1843 † accepted as Carbonicola rhindii (T. Brown, 1843) † (unaccepted > superseded combination)
18. Species Pachyodon rugosus T. Brown, 1843 † accepted as Carbonicola rugosa (T. Brown, 1843) † (unaccepted > superseded combination)
19. Species Pachyodon similis T. Brown, 1843 † accepted as Carbonicola similis (T. Brown, 1843) † (unaccepted > superseded combination)
20. Species Pachyodon subtriangularis T. Brown, 1843 † accepted as Carbonicola subtriangularis (T. Brown, 1843) † (unaccepted > superseded combination)
21. Species Pachyodon sulcatus T. Brown, 1843 † accepted as Carbonicola aquilina (J. De C. Sowerby, 1840) † (unaccepted > junior subjective synonym)
22. Species Pachyodon transversus T. Brown, 1843 † accepted as Carbonicola acuta (J. Sowerby, 1813) † (unaccepted > junior subjective synonym)
23. Species Pachyodon turgidus T. Brown, 1843 † accepted as Anthracosphaerium turgidum (T. Brown, 1843) † (unaccepted > superseded combination)
24. Species Pachyodon vetustus T. Brown, 1843 † accepted as Margaritana distorta (W. Bean, 1836) † accepted as Margaritifera distorta (W. Bean, 1836) † (unaccepted > junior subjective synonym)
25. Species Pachyodon amygdala T. Brown, 1843 † (uncertain > unassessed)
26. Species Pachyodon blaydsii T. Brown, 1843 † (uncertain > unassessed)
27. Species Pachyodon dubius T. Brown, 1843 † (uncertain > taxon inquirendum)
28. Species Pachyodon gerardi T. Brown, 1843 † (uncertain > taxon inquirendum)
29. Species Pachyodon hamatus T. Brown, 1843 † (uncertain > unassessed)
30. Species Pachyodon heyii T. Brown, 1843 † (uncertain > unassessed)
31. Species Pachyodon smithii T. Brown, 1843 † (uncertain > unassessed)
32. Species Pachyodon subrotundus T. Brown, 1843 † (uncertain > unassessed)

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