• Planaxis Lamarck, 1822
• Planaxis (Dalliella) Cossmann, 1895 † accepted as Dalliella Cossmann, 1895 †
• Planaxis (Dalliella) dautzenbergi Glibert, 1949 † accepted as Stosicia dautzenbergi (Glibert, 1949) † accepted as Stosicia multicingulata (O. Boettger, 1887) †
• Planaxis (Orthochilus) Cossmann, 1889 † accepted as Orthochilus Cossmann, 1889 †
• Planaxis (Orthochilus) breviculus Cossmann, 1907 † accepted as Hemisinus hermanni (Le Renard, 1994) †
• Planaxis (Planaxis) Lamarck, 1822 accepted as Planaxis Lamarck, 1822
• Planaxis (Planaxis) sondeianus K. Martin, 1905 † accepted as Planaxis sondeianus K. Martin, 1905 †
• Planaxis (Proplanaxis) Thiele, 1929 accepted as Planaxis (Supplanaxis) Thiele, 1929 accepted as Supplanaxis Thiele, 1929
• Planaxis (Quoyia) J. E. Gray, 1839 accepted as Fissilabia MacGillivray, 1836
• Planaxis (Quoyia) decollata Quoy & Gaimard, 1833 † accepted as Fissilabia decollata (Quoy & Gaimard, 1833)
• Planaxis (Quoyia) densestriatus K. Martin, 1916 † accepted as Fissilabia densestriata (K. Martin, 1916) †
• Planaxis (Supplanaxis) Thiele, 1929 accepted as Supplanaxis Thiele, 1929
• Planaxis (Supplanaxis) nancyae Petuch, 2013 accepted as Supplanaxis nancyae (Petuch, 2013)
• Planaxis abbreviata Pease, 1865 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis abbreviata ogasawarana Pilsbry, 1905 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis acuta Krauss, 1848 accepted as Planaxis acutus Krauss, 1848 accepted as Supplanaxis acutus (Krauss, 1848)
• Planaxis acutus Krauss, 1848 accepted as Supplanaxis acutus (Krauss, 1848)
• Planaxis affinis Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
• Planaxis akuana Rehder, 1980 accepted as Hinea akuana (Rehder, 1980)
• Planaxis albersii Dunker, 1853 accepted as Planaxis atropurpurea Récluz, 1843
• Planaxis areolatus R. P. Lesson, 1842 accepted as Nassarius concinnus (Powys, 1835)
• Planaxis atra Pease, 1869 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis atropurpurea Récluz, 1843 (uncertain > taxon inquirendum)
• Planaxis auingeri Brusina, 1877 † (uncertain > unassessed)
• Planaxis aulacophorus Cossmann, 1889 † accepted as Hinea fischeri (de Raincourt, 1884) †
• Planaxis beaumonti Bayan, 1870 † accepted as Supplanaxis beaumonti (Bayan, 1870) †
• Planaxis beudantiana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis breviculus Deshayes, 1844 (uncertain > taxon inquirendum)
• Planaxis brevis Quoy & Gaimard, 1833 accepted as Planaxis sulcatus (Born, 1778)
• Planaxis bronni Dunker, 1861 (uncertain > unassessed)
• Planaxis buccinea A. Adams, 1853 (uncertain > nomen dubium)
• Planaxis buccineus A. Adams, 1853 (uncertain > nomen dubium)
• Planaxis buccinoides Deshayes, 1828 accepted as Planaxis sulcatus (Born, 1778)
• 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)
• Planaxis canaliculatus Duval, 1840 accepted as Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825)
• Planaxis castaneus E. A. Smith, 1872 (uncertain > taxon inquirendum)
• Planaxis cingulata A. Adams, 1853 (uncertain > taxon inquirendum)
• Planaxis cingulata Gould, 1861 accepted as Planaxis gouldii E. A. Smith, 1872 accepted as Cronia avenacea (R. P. Lesson, 1842) accepted as Usilla avenacea (R. P. Lesson, 1842)
• Planaxis circinatus R. P. Lesson, 1842 accepted as Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825)
• Planaxis crassilabrum Guppy, 1874 † (uncertain > unassessed)
• Planaxis crassispira E. A. Smith, 1872 (uncertain > taxon inquirendum)
• Planaxis dautzenbergi Glibert, 1949 † accepted as Stosicia planaxoides (Grateloup, 1838) † accepted as Stosicia buccinalis (Grateloup, 1828) †
• Planaxis decollata Quoy & Gaimard, 1833 accepted as Fissilabia decollata (Quoy & Gaimard, 1833)
• Planaxis denudatus Cossmann, 1889 † accepted as Leioplanaxis denudatus (Cossmann, 1889) †
• Planaxis desmarestiana Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
• Planaxis discrepans Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792)
• Planaxis donatiana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis eboreus E. A. Smith, 1872 accepted as Angiola lineata (da Costa, 1778) accepted as Hinea lineata (da Costa, 1778)
• Planaxis encausticus E. A. Smith, 1872 (uncertain > taxon inquirendum)
• Planaxis fasciata Pease, 1868 accepted as Planaxis fasciatus Pease, 1868 accepted as Angiola fasciata (Pease, 1868) accepted as Hinea fasciata (Pease, 1868)
• Planaxis fasciatus Pease, 1868 accepted as Angiola fasciata (Pease, 1868) accepted as Hinea fasciata (Pease, 1868)
• Planaxis fischeri de Raincourt, 1884 † accepted as Hinea fischeri (de Raincourt, 1884) †
• Planaxis fitcheliana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis fulva A. Adams, 1853 (uncertain)
• Planaxis gouldii E. A. Smith, 1872 accepted as Cronia avenacea (R. P. Lesson, 1842) accepted as Usilla avenacea (R. P. Lesson, 1842)
• Planaxis griseus (Brocchi, 1821) accepted as Planaxis savignyi Deshayes, 1844
• Planaxis hanleyi E. A. Smith, 1872 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis incisus R. A. Philippi, 1851 (uncertain > nomen dubium)
• Planaxis inepta A. Gould, 1861 accepted as Hinea inepta (A. Gould, 1861)
• Planaxis interpunctatus Cossmann & Pissarro, 1902 † accepted as Pseudotaphrus interpunctatus (Cossmann & Pissarro, 1902) †
• Planaxis labiosa A. Adams, 1853 accepted as Angiola labiosa (A. Adams, 1853) accepted as Hinea zonata (A. Adams, 1853)
• Planaxis laevigata Risso, 1826 accepted as Nassarius granum (Lamarck, 1822) accepted as Tritia grana (Lamarck, 1822)
• Planaxis lineatus (da Costa, 1778) accepted as Angiola lineata (da Costa, 1778) accepted as Hinea lineata (da Costa, 1778)
• Planaxis lineatus fasciatus Pease, 1868 accepted as Angiola fasciata (Pease, 1868) accepted as Hinea fasciata (Pease, 1868)
• Planaxis lineolata Gould, 1849 accepted as Hinea zonata (A. Adams, 1853)
• Planaxis lineolata Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis lineolatus A. Gould, 1849 accepted as Hinea atra (Pease, 1869)
• Planaxis longispira E. A. Smith, 1872 accepted as Hinea longispira (E. A. Smith, 1872)
• Planaxis loques Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis mamillata Risso, 1826 accepted as Nassarius nitidus (Jeffreys, 1867) accepted as Tritia nitida (Jeffreys, 1867)
• Planaxis menkeanus Dunker, 1861 accepted as Planaxis sulcatus (Born, 1778)
• Planaxis molliana Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis mollis G. B. Sowerby I, 1823 accepted as Hinea brasiliana (Lamarck, 1822)
• Planaxis nancyae Petuch, 2013 accepted as Supplanaxis nancyae (Petuch, 2013)
• Planaxis nicobaricus Zelebor, 1866 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis niger Quoy & Gaimard, 1833 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis nigra Quoy & Gaimard, 1833 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis nigritella Forbes, 1852 accepted as Planaxis obsoletus Menke, 1851 accepted as Supplanaxis obsoletus (Menke, 1851)
• Planaxis nucleola Mörch, 1876 accepted as Supplanaxis nucleus (Bruguière, 1789)
• Planaxis nucleus (Bruguière, 1789) accepted as Supplanaxis nucleus (Bruguière, 1789)
• Planaxis obscura A. Adams, 1853 accepted as Planaxis sulcatus (Born, 1778)
• Planaxis obsoletus Menke, 1851 accepted as Supplanaxis obsoletus (Menke, 1851)
• Planaxis olivacea Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792)
• Planaxis pigra Forbes, 1852 accepted as Hinea brasiliana (Lamarck, 1822)
• Planaxis piliger R. A. Philippi, 1849 accepted as Holcostoma piliger (R. A. Philippi, 1849)
• Planaxis planicostatus G. B. Sowerby I, 1825 accepted as Supplanaxis planicostatus (G. B. Sowerby I, 1825)
• Planaxis plumbea Pease, 1861 (uncertain > unassessed)
• Planaxis punctorostratus accepted as Angiola punctostriata (E. A. Smith, 1872) accepted as Hinea punctostriata (E. A. Smith, 1872)
• Planaxis punctostriatus E. A. Smith, 1872 accepted as Angiola punctostriata (E. A. Smith, 1872) accepted as Hinea punctostriata (E. A. Smith, 1872)
• Planaxis raricosta Risso, 1826 accepted as Nassarius corniculum (Olivi, 1792) accepted as Tritia corniculum (Olivi, 1792)
• Planaxis riparia Risso, 1826 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia corrugata (Brocchi, 1814)
• Planaxis rosacea Risso, 1826 accepted as Nassarius incrassatus (Strøm, 1768) accepted as Tritia incrassata (Strøm, 1768)
• Planaxis savignyi Deshayes, 1844
• Planaxis semilaevis E. von Martens, 1883 (uncertain > taxon inquirendum)
• Planaxis semisulcatus G. B. Sowerby I, 1823 accepted as Supplanaxis nucleus (Bruguière, 1789)
• Planaxis similis E. A. Smith, 1872 accepted as Supplanaxis niger (Quoy & Gaimard, 1833)
• Planaxis sondeianus K. Martin, 1905 †
• Planaxis striatulus R. A. Philippi, 1851 accepted as Hinea zonata (A. Adams, 1853)
• Planaxis succincta A. Adams, 1853 (uncertain > unassessed)
• Planaxis sulcatus (Born, 1778)