1. Species Cyrtolites budleighensis Reed, 1920 †
2. Species Cyrtolites claysferryensis Wahlman, 1992 †
3. Species Cyrtolites craigensis Reed, 1920 †
4. Species Cyrtolites dilatatus Ulrich & Scofield, 1897 †
5. Species Cyrtolites disjunctus Ulrich & Scofield, 1897 †
6. Species Cyrtolites grandis Koken, 1897 †
7. Species Cyrtolites hornyi Wahlman, 1992 †
8. Species Cyrtolites inornatum (J. Hall, 1845) †
9. Species Cyrtolites inprobus Barrande, 1903 †
10. Species Cyrtolites insculptus Northrop, 1939 †
11. Species Cyrtolites minor Ulrich & Scofield, 1897 †
12. Species Cyrtolites nodosus Salter & Aveline, 1854 †
13. Species Cyrtolites occultus Perner, 1903 †
14. Species Cyrtolites ornatus Conrad, 1838 †
15. Species Cyrtolites pileolus J. Hall, 1859 †
16. Species Cyrtolites retrorsus Ulrich & Scofield, 1897 †
17. Species Cyrtolites rugosus Barrande, 1903 †
18. Species Cyrtolites seminulum Barrande, 1903 †
19. Species Cyrtolites sinuosus J. Hall, 1879 †
20. Species Cyrtolites thraivensis Reed, 1920 †
21. Species Cyrtolites trentonensis Conrad, 1842 †
22. Species Cyrtolites tuboides Barrande, 1903 †
23. Species Cyrtolites undulatus Perner, 1903 †
24. Subgenus Cyrtolites (Cyrtolites) Conrad, 1838 † accepted as Cyrtolites Conrad, 1838 † (unaccepted > superseded rank)
    1. Species Cyrtolites (Cyrtolites) claysferryensis Wahlman, 1992 † accepted as Cyrtolites claysferryensis Wahlman, 1992 † (unaccepted > superseded combination)
    2. Species Cyrtolites (Cyrtolites) hornyi Wahlman, 1992 † accepted as Cyrtolites hornyi Wahlman, 1992 † (unaccepted > superseded combination)
25. Subgenus Cyrtolites (Paracyrtolites) Wahlman, 1992 † accepted as Paracyrtolites Wahlman, 1992 † (unaccepted > superseded rank)
    1. Species Cyrtolites (Paracyrtolites) carinatus S. A. Miller, 1874 † accepted as Paracyrtolites carinatus (S. A. Miller, 1874) † (unaccepted > superseded combination)
    2. Species Cyrtolites (Paracyrtolites) parvus Ulrich, 1897 † accepted as Paracyrtolites parvus (Ulrich, 1897) † (unaccepted > superseded combination)
    3. Species Cyrtolites (Paracyrtolites) subplanus Ulrich, 1897 † accepted as Paracyrtolites subplanus (Ulrich, 1897) † (unaccepted > superseded combination)
26. Species Cyrtolites acutus Barrande, 1903 † accepted as Temnodiscus bicarinatus Perner, 1903 † accepted as Sinuitopsis neglecta Barrande, 1903 † (unaccepted > junior homonym, A junior homonym of Cyrtolites acutus Sowerby)
27. Species Cyrtolites advena Barrande, 1903 † accepted as Neocyrtolites advena (Barrande, 1903) † (unaccepted > superseded combination)
28. Species Cyrtolites carinatus S. A. Miller, 1874 † accepted as Paracyrtolites carinatus (S. A. Miller, 1874) † (unaccepted > superseded combination)
29. Species Cyrtolites conradi J. Hall, 1862 † accepted as Bucanella conradi (J. Hall, 1862) † (unaccepted > superseded combination)
30. Species Cyrtolites corniculum Eichwald, 1860 † accepted as Pollicina corniculum (Eichwald, 1860) † (original combination)
31. Species Cyrtolites cristatus Safford, 1869 † accepted as Tropidodiscus cristatus (Safford, 1869) † (unaccepted > superseded combination)
32. Species Cyrtolites decorus Perner, 1903 † accepted as Yochelsonellis decorus (Perner, 1903) † (unaccepted > superseded combination)
33. Species Cyrtolites desideratus Billings, 1866 † accepted as Phragmolites desideratus (Billings, 1866) † (unaccepted > superseded combination)
34. Species Cyrtolites dyeri J. Hall, 1871 † accepted as Phragmolites dyeri (J. Hall, 1871) † (unaccepted > superseded combination)
35. Species Cyrtolites elegans S. A. Miller, 1874 † accepted as Phragmolites elegans (S. A. Miller, 1874) † (unaccepted > superseded combination)
36. Species Cyrtolites eremita Barrande, 1903 † accepted as Cyclocyrtonella eremita (Barrande, 1903) † (unaccepted > superseded combination)
37. Species Cyrtolites evolvens Barrande, 1903 † accepted as Cyrtodiscus evolvens (Barrande, 1903) † (unaccepted > superseded combination)
38. Species Cyrtolites expansus J. Hall, 1859 † accepted as Cyrtonella expansa (J. Hall, 1859) † (unaccepted > superseded combination)
39. Species Cyrtolites fallax Perner, 1903 † accepted as Yochelsonellis fallax (Perner, 1903) † (unaccepted > superseded combination)
40. Species Cyrtolites fasciculatus Barrande, 1903 † accepted as Yochelsonellis fasciculatus (Barrande, 1903) † (unaccepted > superseded combination)
41. Species Cyrtolites imbricatus Meek & Worthen, 1868 † accepted as Phragmolites imbricatus (Meek & Worthen, 1868) † (unaccepted > superseded combination)
42. Species Cyrtolites kokeni Perner, 1903 † accepted as Yochelsonellis kokeni (Perner, 1903) † (unaccepted > superseded combination)
43. Species Cyrtolites lamellifer Lindström, 1884 † accepted as Temnodiscus lamellifer (Lindström, 1884) † (unaccepted > superseded combination)
44. Species Cyrtolites magnus S. A. Miller, 1878 † accepted as Tropidodiscus magnus (S. A. Miller, 1878) † (unaccepted > superseded combination)
45. Species Cyrtolites mitella J. Hall, 1859 † accepted as Cyrtonella mitella (J. Hall, 1859) † (unaccepted > superseded combination)
46. Species Cyrtolites pachygaster Koken, 1925 † accepted as Cymbularia bullatus (Koken, 1925) † (subjective synonym)
47. Species Cyrtolites pannosus Billings, 1866 † accepted as Phragmolites pannosus (Billings, 1866) † (unaccepted > superseded combination)
48. Species Cyrtolites parvus Ulrich, 1897 † accepted as Paracyrtolites parvus (Ulrich, 1897) † (unaccepted > superseded combination)
49. Species Cyrtolites pharetra Lindström, 1884 † accepted as Pharetrolites pharetra (Lindström, 1884) † (unaccepted > superseded combination)
50. Species Cyrtolites planicosta Perner, 1903 † accepted as Yochelsonellis planicosta (Perner, 1903) † (unaccepted > superseded combination)
51. Species Cyrtolites subplanus Ulrich, 1897 † accepted as Paracyrtolites subplanus (Ulrich, 1897) † (unaccepted > superseded combination)
52. Species Cyrtolites arrosus Lindström, 1884 † (uncertain > unassessed)
53. Species Cyrtolites discus Lindström, 1884 † (uncertain > unassessed)
54. Species Cyrtolites euryomphalus Lindström, 1884 † (uncertain > unassessed)
55. Species Cyrtolites nitidulus E. O. Ulrich, 1879 † (uncertain > unassessed)
56. Species Cyrtolites obliquus Lindström, 1884 † (uncertain > unassessed)
57. Species Cyrtolites orbiculus Lindström, 1884 † (uncertain > unassessed)

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