1. Species Palaeoneilo aegyptiaca Ayoub-Hannaa, Fürsich & Abdelhady, 2023 †
2. Species Palaeoneilo constricta (Conrad, 1842) †
3. Species Palaeoneilo cuneata J.-H. Chen, 1976 †
4. Species Palaeoneilo faba Wissmann, 1841 †
5. Species Palaeoneilo forbesii Ulrich, 1892 †
6. Species Palaeoneilo fortistriata Wasmer & Hautmann, 2012 †
7. Species Palaeoneilo fuyunensis Z.-R. Yang, 1983 †
8. Species Palaeoneilo galatea (A. d'Orbigny, 1850) †
9. Species Palaeoneilo gushiensis D.-Y. Wang, 1977 †
10. Species Palaeoneilo kalpinensis Z.-R. Yang, 1981 †
11. Species Palaeoneilo kalpintakensis Z.-R. Yang, 1981 †
12. Species Palaeoneilo muensteri (Goldfuss, 1841) †
13. Species Palaeoneilo onukii (T. Kobayashi & Hisakoshi, 1942) †
14. Species Palaeoneilo praecursor (Frech, 1904) †
15. Species Palaeoneilo qinggilensis Z.-R. Yang, 1983 †
16. Species Palaeoneilo qujiangensis R.-J. Zhang, 1977 †
17. Species Palaeoneilo sakuradaniensis Ichikawa, 1954 †
18. Species Palaeoneilo tiaomajianensis R.-J. Zhang, 1977 †
19. Species Palaeoneilo whitechurchii Healey, 1908 †
20. Species Palaeoneilo bisulcata J. Hall & Whitfield, 1869 † accepted as Bicrenula bisulcata (J. Hall & Whitfield, 1869) † (unaccepted > superseded combination)
21. Species Palaeoneilo choroschowensis Borissjak, 1904 † accepted as Mesosaccella choroschowensis (Borissjak, 1904) † (unaccepted > superseded combination)
22. Species Palaeoneilo elliptica (Goldfuss, 1837) † accepted as Palaeoneilo muensteri (Goldfuss, 1841) † (invalid; based on preoccupied original name)
23. Species Palaeoneilo hamiltoni Wilckens, 1927 † accepted as Mesosaccella hamiltoni (Wilckens, 1927) †
24. Species Palaeoneilo mundeni C. A. Fleming, 1954 † accepted as Mesosaccella mundeni (C. A. Fleming, 1954) †
25. Species Palaeoneilo otamitensis Trechmann, 1918 † accepted as Mesosaccella otamitensis (Trechmann, 1918) †
26. Species Palaeoneilo raricostae Chapman, 1908 † accepted as Praectenodonta raricostae (Chapman, 1908) † (unaccepted > superseded combination, original combination)
27. Species Palaeoneilo tenulineata Klipstein, 1845 † accepted as Palaeoneilo faba Wissmann, 1841 †
28. Species Palaeoneilo anthraconeiloides (Chao, 1927) † (uncertain > unassessed)
29. Species Palaeoneilo fentouensis L. Liu, 1983 † (uncertain > unassessed)
30. Species Palaeoneilo guizhouensis Chen & X. Lan, 1976 † (uncertain > unassessed)
31. Species Palaeoneilo leiyangensis L. Liu, 1976 † (uncertain > unassessed)
32. Species Palaeoneilo magnifica J. M. Clarke, 1913 † (uncertain > unassessed)
33. Species Palaeoneilo oviformis (Eck, 1872) † (uncertain > unassessed)
34. Species Palaeoneilo praeacuta (Klipstein, 1843) † (uncertain > unassessed)
35. Species Palaeoneilo rhysa J. M. Clarke, 1913 † (uncertain > unassessed)
36. Species Palaeoneilo sancticrucis J. M. Clarke, 1913 † (uncertain > unassessed)
37. Species Palaeoneilo subexcentrica C.-Z. Chen, 1976 † (uncertain > unassessed)
38. Species Palaeoneilo suborbicularis Reed, 1927 † (uncertain > unassessed)
39. Species Palaeoneilo subtenella Krumbeck, 1924 † (uncertain > unassessed)
40. Species Palaeoneilo sunanensis L. Liu, 1976 † (uncertain > unassessed)
41. Species Palaeoneilo tianshanensis Z.-R. Yang, 1983 † (uncertain > unassessed)
42. Species Palaeoneilo tirolensis (Woehrmann, 1889) † (uncertain > unassessed)
43. Species Palaeoneilo yongdingensis J.-H. Li & B.-L. Ding, 1982 † (uncertain > unassessed)

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