1. Species Planaxis savignyi Deshayes, 1844
2. Species Planaxis sulcatus (Born, 1778)
3. Species Planaxis suturalis E. A. Smith, 1872
4. Species Planaxis virgatus E. A. Smith, 1872
5. Subgenus Planaxis (Planaxis) Lamarck, 1822 accepted as Planaxis Lamarck, 1822
6. Subgenus Planaxis (Proplanaxis) Thiele, 1929 accepted as Planaxis (Supplanaxis) Thiele, 1929 accepted as Supplanaxis Thiele, 1929
7. Subgenus Planaxis (Quoyia) J. E. Gray, 1839 accepted as Fissilabia MacGillivray, 1836 (unaccepted > junior subjective synonym)
8. Subgenus Planaxis (Supplanaxis) Thiele, 1929 accepted as Supplanaxis Thiele, 1929 (original rank)
   1. Species Planaxis (Supplanaxis) nancyae Petuch, 2013 accepted as Supplanaxis nancyae (Petuch, 2013) (basionym)
9. Species Planaxis abbreviata Pease, 1865 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
10. Species Planaxis acuta Krauss, 1848 accepted as Planaxis acutus Krauss, 1848 accepted as Supplanaxis acutus (Krauss, 1848) (incorrect grammatical agreement of specific epithet)
11. Species Planaxis acutus Krauss, 1848 accepted as Supplanaxis acutus (Krauss, 1848) (unaccepted > superseded combination)
12. Species Planaxis affinis Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
13. Species Planaxis akuana Rehder, 1980 accepted as Hinea akuana (Rehder, 1980)
14. Species Planaxis albersii Dunker, 1853 accepted as Planaxis atropurpurea Récluz, 1843
15. Species Planaxis areolatus Lesson, 1842 accepted as Nassarius concinnus (Powys, 1835)
16. Species Planaxis atra Pease, 1869 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
17. Species Planaxis beudantiana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
18. Species Planaxis brevis Quoy & Gaimard, 1833 accepted as Planaxis sulcatus (Born, 1778)
19. Species Planaxis buccinoides Deshayes, 1828 accepted as Planaxis sulcatus (Born, 1778)
20. Species Planaxis canaliculata Duval, 1840 accepted as Planaxis canaliculatus Duval, 1840 accepted as Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825) (incorrect gender agreement of specific epithet)
21. Species Planaxis canaliculatus Duval, 1840 accepted as Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825)
22. Species Planaxis cingulata Gould, 1861 accepted as Planaxis gouldii E. A. Smith, 1872 accepted as Cronia avenacea (Lesson, 1842) accepted as Usilla avenacea (Lesson, 1842) (junior homonym of Planaxis cingulata A. Adams, 1853; Planaxis gouldii E. A. Smith, 1872 is a replacement name.)
23. Species Planaxis circinatus Lesson, 1842 accepted as Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825)
24. Species Planaxis decollata Quoy & Gaimard, 1833 accepted as Fissilabia decollata (Quoy & Gaimard, 1833) (original combination)
25. Species Planaxis desmarestiana Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
26. Species Planaxis discrepans Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792) (synonym)
27. Species Planaxis donatiana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826)
28. Species Planaxis eboreus E. A. Smith, 1872 accepted as Angiola lineata (da Costa, 1778) accepted as Hinea lineata (da Costa, 1778)
29. Species Planaxis fasciata Pease, 1868 accepted as Planaxis fasciatus Pease, 1868 accepted as Angiola fasciata (Pease, 1868) accepted as Hinea fasciata (Pease, 1868) (incorrect gender agreement of specific epithet)
30. Species Planaxis fasciatus Pease, 1868 accepted as Angiola fasciata (Pease, 1868) accepted as Hinea fasciata (Pease, 1868) (original combination)
31. Species Planaxis fitcheliana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
32. Species Planaxis gouldii E. A. Smith, 1872 accepted as Cronia avenacea (Lesson, 1842) accepted as Usilla avenacea (Lesson, 1842) (synonym)
33. Species Planaxis griseus (Brocchi, 1821) accepted as Planaxis savignyi Deshayes, 1844
34. Species Planaxis hanleyi E. A. Smith, 1872 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
35. Species Planaxis inepta A. Gould, 1861 accepted as Hinea inepta (A. Gould, 1861) (superseded combination)
36. Species Planaxis labiosa A. Adams, 1853 accepted as Angiola labiosa (A. Adams, 1853) accepted as Hinea zonata (A. Adams, 1853)
37. Species Planaxis laevigata Risso, 1826 accepted as Nassarius granum (Lamarck, 1822) accepted as Tritia grana (Lamarck, 1822)
38. Species Planaxis lineatus (da Costa, 1778) accepted as Angiola lineata (da Costa, 1778) accepted as Hinea lineata (da Costa, 1778)
39. Species Planaxis lineolata Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
40. Species Planaxis lineolata Gould, 1849 accepted as Hinea zonata (A. Adams, 1853) (synonym)
41. Species Planaxis lineolatus A. Gould, 1849 accepted as Hinea atra (Pease, 1869) (invalid: junior homonym of Planaxis lineolata Risso, 1826)
42. Species Planaxis longispira E. A. Smith, 1872 accepted as Hinea longispira (E. A. Smith, 1872) (original combination)
43. Species Planaxis loques Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
44. Species Planaxis mamillata Risso, 1826 accepted as Nassarius nitidus (Jeffreys, 1867) accepted as Tritia nitida (Jeffreys, 1867) (dubious synonym)
45. Species Planaxis menkeanus Dunker, 1861 accepted as Planaxis sulcatus (Born, 1778)
46. Species Planaxis molliana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
47. Species Planaxis mollis G. B. Sowerby I, 1823 accepted as Hinea brasiliana (Lamarck, 1822) (junior subjective synonym)
48. Species Planaxis nancyae Petuch, 2013 accepted as Supplanaxis nancyae (Petuch, 2013) (original combination)
49. Species Planaxis nicobaricus Zelebor, 1866 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
50. Species Planaxis niger Quoy & Gaimard, 1833 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
51. Species Planaxis nigra Quoy & Gaimard, 1833 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
52. Species Planaxis nigritella Forbes, 1852 accepted as Planaxis obsoletus Menke, 1851 accepted as Supplanaxis obsoletus (Menke, 1851)
53. Species Planaxis nucleola Mörch, 1876 accepted as Supplanaxis nucleus (Bruguière, 1789)
54. Species Planaxis nucleus (Bruguière, 1789) accepted as Supplanaxis nucleus (Bruguière, 1789)
55. Species Planaxis obscura A. Adams, 1853 accepted as Planaxis sulcatus (Born, 1778)
56. Species Planaxis obsoletus Menke, 1851 accepted as Supplanaxis obsoletus (Menke, 1851) (original combination)
57. Species Planaxis olivacea Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792) (synonym)
58. Species Planaxis pigra Forbes, 1852 accepted as Hinea brasiliana (Lamarck, 1822) (junior subjective synonym)
59. Species Planaxis piliger R. A. Philippi, 1849 accepted as Holcostoma piliger (R. A. Philippi, 1849) (unaccepted > superseded combination)
60. Species Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825) (original combination)
61. Species Planaxis punctorostratus accepted as Angiola punctostriata (E. A. Smith, 1872) accepted as Hinea punctostriata (E. A. Smith, 1872) (misspelling)
62. Species Planaxis punctostriatus E. A. Smith, 1872 accepted as Angiola punctostriata (E. A. Smith, 1872) accepted as Hinea punctostriata (E. A. Smith, 1872) (synonym)
63. Species Planaxis raricosta Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792) (synonym)
64. Species Planaxis riparia Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
65. Species Planaxis rosacea Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
66. Species Planaxis semisulcatus G. B. Sowerby I, 1823 accepted as Supplanaxis nucleus (Bruguière, 1789)
67. Species Planaxis similis E. A. Smith, 1872 accepted as Supplanaxis niger (Quoy & Gaimard, 1833) (junior synonym)
68. Species Planaxis striatulus R. A. Philippi, 1851 accepted as Hinea zonata (A. Adams, 1853)
69. Species Planaxis tenuis Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (synonym)
70. Species Planaxis trifasciata Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792) (synonym)
71. Species Planaxis turulosa Risso, 1826 accepted as Tritia turulosa (Risso, 1826) (original combination)
72. Species Planaxis undulata Lamarck, 1822 accepted as Planaxis sulcatus (Born, 1778)
73. Species Planaxis zonatus A. Adams, 1853 accepted as Hinea zonata (A. Adams, 1853) (unaccepted > superseded combination)
74. Species Planaxis atropurpurea Récluz, 1843 (uncertain > taxon inquirendum)
75. Species Planaxis breviculus Deshayes, 1844 (uncertain > taxon inquirendum)
76. Species Planaxis buccinea A. Adams, 1853 (uncertain > nomen dubium, incorrect grammatical agreement of specific epithet)
77. Species Planaxis buccineus A. Adams, 1853 (uncertain > nomen dubium)
78. Species Planaxis castaneus E. A. Smith, 1872 (uncertain > taxon inquirendum)
79. Species Planaxis cingulata A. Adams, 1853 (uncertain > taxon inquirendum)
80. Species Planaxis crassispira E. A. Smith, 1872 (uncertain > taxon inquirendum)
81. Species Planaxis encausticus E. A. Smith, 1872 (uncertain > taxon inquirendum)
82. Species Planaxis fulva A. Adams, 1853 (uncertain, use in recent literature not established by editor)
83. Species Planaxis incisus R. A. Philippi, 1851 (uncertain > nomen dubium)
84. Species Planaxis plumbea Pease, 1861 (uncertain > unassessed)
85. Species Planaxis semilaevis E. von Martens, 1883 (uncertain > taxon inquirendum)
86. Species Planaxis succincta A. Adams, 1853 (uncertain > unassessed)
87. Species Planaxis taeniatus R. A. Philippi, 1849 (uncertain > nomen dubium)
88. Species Planaxis tenuis E. A. Smith, 1872 (uncertain > taxon inquirendum, junior primary homonym of Planaxis tenuis Risso, 1826.)
89. Species Planaxis variabilis E. A. Smith, 1872 (uncertain > taxon inquirendum)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License