1. Family Alisphaeraceae J.R.Young, Kleijne & Cros in Young, Geisen, Cros, Kleijne, Sprengel, Probert & Ostergaard, 2003
2. Family Amphimonadaceae Senn, 1900
3. Genus Angulofenestrellithus Bukry, 1969 †
4. Genus Bilorum W.Calaway, 1960
5. Family Ceratolithaceae Norris, 1965
6. Genus Diademopetra W.W.Hay, H.Mohler & M.E.Wade
7. Genus Heimiella H.Lohmann
8. Genus Heterorhabdus D.Noël, 1970
9. Genus Hexalithus Gardet n.man.
10. Genus Heyneckia Lohmann
11. Genus Kizakimonas Skvortsov
12. Genus Koczyia Boudreaux & Hay
13. Genus Palmicricothus Deflandre
14. Family Papposphaeraceae Jordan & Young, 1990
15. Genus Parachrysidalis Hulbert, 1965
16. Genus Pemma Klumpp
17. Genus Pentalitus
18. Genus Placorhombus Jer.R.Young & M.Geisen, 2003
19. Genus Pyxolithus G.V.Deflandre
20. Genus Striatococcolithus Bukry, 1971 †
21. Genus Sujkowskiella Hay, Mohler & Wade
22. Genus Tetralithoides S.Theodoridis, 1984 †
23. Genus Trochastrites H.Stradner
24. Genus Trochoaster B.Klumpp
25. Genus Trochoastrites
26. Genus Turrilithus R.W.Jordan, Knappertsbusch, W.R.Simpson & A.H.L.Chamberlain, 1991
27. Family Umbellosphaeraceae J.R.Young & Kleinje in Young et al., 2003
28. Genus Wiseorhabdus D.Bukry, 1981
29. Genus Youngilithus P.R.Bown, 2005 †
30. Genus Zygostephanos N.Hoffmann
31. Genus Asterolithes Sujkowski, 1931 † accepted as Discoaster S.H.Tan, 1931 †
32. Genus Cyathosphaera Haeckel, 1894 accepted as Coccolithus E.H.L.Schwarz, 1894
33. Genus Turbodiscoaster Ben Prins † accepted as Discoaster S.H.Tan, 1931 †
34. Genus Vesillarius Jordan & A.H.L.Chamberlain, 1993 accepted as Vexillarius Jordan & A.H.L.Chamberlain, 1993 (unaccepted > misspelling - incorrect subsequent spelling)
35. Genus Allemannites Grün (uncertain)
36. Genus Annulithus Rood, Hay & Barnard (uncertain > unassessed)
37. Genus Aspidiophora Sjöstedt (uncertain > unassessed)
38. Genus Astrionis Wilcoxon (uncertain > unassessed)
39. Genus Bidiscorhabdus Ben Prins (uncertain > unassessed)
40. Genus Bipodorhabdus Noël (uncertain > unassessed)
41. Genus Bucculinus Noël (uncertain > unassessed)
42. Genus Caryptococcolithus (uncertain > unassessed)
43. Genus Corbilithus Haq, 1971 (uncertain > unassessed)
44. Genus Cruciolithus H.Stradner (uncertain > nomen dubium)
45. Genus Cuneatus Shamrai (uncertain > unassessed)
46. Genus Curvidiscoaster Ben Prins (uncertain > unassessed)
47. Genus Cyclocalyptra Kamptner, 1958 † (uncertain)
48. Genus Cyclococcolithinus (uncertain > unassessed)
49. Genus Dichrysis Preisig, 1978 (uncertain > unassessed)
50. Genus Discolobatus Haq. (uncertain > unassessed)
51. Genus Discoturbella P.H.Roth (uncertain > unassessed)
52. Genus Eocricosphaera Deflandre (uncertain > unassessed)
53. Genus Eodiscoaster Martini (uncertain > unassessed)
54. Genus Glaukolithotus Reinhardt (uncertain > unassessed)
55. Genus Hayesites H.Manivit (uncertain > unassessed)
56. Genus Nannoturba Carla Müller, 1979 (uncertain > nomen dubium)
57. Genus Pseudotriquetrorhabdulus S.W.Wise, 1976 (uncertain)
58. Genus Psyktosphaera J.J.Pospichal & S.W.Wise, Jr., 1990 (uncertain)
59. Genus Pyrobolella M.Black (uncertain > nomen dubium)
60. Genus Tansinius M.G.Filipescu & E.Hanganu (uncertain > nomen dubium)
61. Genus Truncodiscoaster Ben Prins (uncertain)
62. Genus Vermiculithina Bukry & Percival (uncertain)
63. Genus Zachariasia Max Voigt, 1901 (uncertain > nomen dubium)

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