1. Subgenus Thysanozoon (Eolidiceros) Schmarda, 1859
   1. Species Thysanozoon (Eolidiceros) cruciatum Schmarda, 1859 accepted as Thysanozoon cruciatum Schmarda, 1859
   2. Species Thysanozoon (Eolidiceros) ovale Schmarda, 1859 accepted as Acanthozoon ovale (Schmarda, 1859)
2. Species Thysanozoon alagoensis Bahia, Padula, Correia & Sovierzoski, 2015
3. Species Thysanozoon aucklandicum Cheeseman, 1883
4. Species Thysanozoon australe Stimpson, 1855
5. Species Thysanozoon brocchii (Risso, 1818)
6. Species Thysanozoon californicum Hyman, 1953
7. Species Thysanozoon cruciatum Schmarda, 1859
8. Species Thysanozoon discoideum Schmarda, 1859
9. Species Thysanozoon distinctum Stummer-Traunfels, 1895
10. Species Thysanozoon estacahuitensis Ramos-Sanchez, Bahia & Rolando Bastida-Zavala, 2020
11. Species Thysanozoon flavotuberculatum Hyman, 1939
12. Species Thysanozoon griseum Verrill, 1901
13. Species Thysanozoon hawaiiensis Hyman, 1960
14. Species Thysanozoon huttoni Kirk, 1882
15. Species Thysanozoon japonicum Kato, 1944
16. Species Thysanozoon langi Stummer-Traunfels, 1895
17. Species Thysanozoon minutum Stummer-Traunfels, 1895
18. Species Thysanozoon mirtae Bulnes, Albano, Obenat & Cazzaniga, 2011
19. Species Thysanozoon nigropapillosum (Hyman, 1959)
20. Species Thysanozoon nigrum Girard, 1851
21. Species Thysanozoon papillosum Grube, 1840
22. Species Thysanozoon raphaeli Bolanos, Quiroga & Litvaitis, 2007
23. Species Thysanozoon sandiegiense Hyman, 1953
24. Species Thysanozoon skottsbergi Bock, 1923
25. Species Thysanozoon tentaculatum (Gray in Pease, 1860)
26. Species Thysanozoon verrucosum Grube, 1867
27. Species Thysanozoon vulgare Palombi, 1939
28. Species Thysanozoon alderi Collingwood, 1876 accepted as Acanthozoon alderi (Collingwood, 1876)
29. Species Thysanozoon allmani Collingwood, 1876 accepted as Acanthozoon allmani (Collingwood, 1876)
30. Species Thysanozoon aucklandica Cheeseman, 1883 accepted as Thysanozoon aucklandicum Cheeseman, 1883
31. Species Thysanozoon aurantiacum (Delle Chiaje, 1822) accepted as Yungia aurantiaca (Delle Chiaje, 1822)
32. Species Thysanozoon auriantiacum (Delle Chiaje, 1822) accepted as Yungia aurantiaca (Delle Chiaje, 1822)
33. Species Thysanozoon auropunctatum Kelaart, 1858 accepted as Acanthozoon auropunctatum (Kelaart, 1858)
34. Species Thysanozoon auropunctatum Collingwood, 1876 accepted as Acanthozoon auropunctatum (Kelaart, 1858)
35. Species Thysanozoon boehmigi Stummer-Traunfels, 1895 accepted as Acanthozoon boehmigi (Stummer-Traunfels, 1895)
36. Species Thysanozoon dicquemaris (Delle Chiaje, 1841) accepted as Thysanozoon brocchii (Risso, 1818)
37. Species Thysanozoon dicquemaris (Risso, 1818) accepted as Thysanozoon brocchii (Risso, 1818)
38. Species Thysanozoon diesingii Grube, 1840 accepted as Thysanozoon brocchii (Risso, 1818)
39. Species Thysanozoon flavum (Delle-Chiaje, 1822) Örsted, 1844 accepted as Yungia aurantiaca (Delle Chiaje, 1822)
40. Species Thysanozoon fockei Diesing, 1850 accepted as Thysanozoon brocchii (Risso, 1818)
41. Species Thysanozoon indicum (Plehn, 1896) accepted as Acanthozoon indicum (Plehn, 1896)
42. Species Thysanozoon lagidium Marcus, 1949 accepted as Thysanozoon brocchii (Risso, 1818)
43. Species Thysanozoon muelleri (Delle Chiaje, 1829) accepted as Pseudoceros mulleri (Delle Chiaje, 1829)
44. Species Thysanozoon mulleri (Della-Chiaje, 1829) accepted as Pseudoceros mulleri (Delle Chiaje, 1829)
45. Species Thysanozoon obscurum Stummer-Traunfels, 1895 accepted as Acanthozoon obscurum (Stummer-Traunfels, 1895)
46. Species Thysanozoon ovale Schmarda, 1859 accepted as Acanthozoon ovale (Schmarda, 1859)
47. Species Thysanozoon panormis (Quatrefage, 1845) accepted as Thysanozoon brocchii (Risso, 1818)
48. Species Thysanozoon panormus (Quatrefage, 1845) accepted as Thysanozoon brocchii (Risso, 1818)
49. Species Thysanozoon papillosum (Diesing, 1836) accepted as Thysanozoon brocchii (Risso, 1818)
50. Species Thysanozoon papillosum (Sars, 1878) accepted as Cycloporus papillosus (Sars, 1878)
51. Species Thysanozoon plehni Laidlaw, 1902 accepted as Acanthozoon plehni (Laidlaw, 1902)
52. Species Thysanozoon sandiegense Hyman, 1953 accepted as Thysanozoon sandiegiense Hyman, 1953
53. Species Thysanozoon semperi Stummer-Traunfels, 1895 accepted as Acanthozoon semperi (Stummer-Traunfels, 1895)
54. Species Thysanozoon tuberculatum (Delle-Chiaje, 1828) accepted as Thysanozoon brocchii (Risso, 1818)
55. Species Thysanozoon violaceum (Delle-Chiaje, 1822) accepted as Prostheceraeus violaceus (Delle-Chiaje, 1822)
56. Species Thysanozoon vulgaris Palombi, 1939 accepted as Thysanozoon vulgare Palombi, 1939

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