Planaxis buccinea A. Adams, 1853: synonym of Planaxis buccineus A. Adams, 1853 (nomen dubium) (incorrect grammatical agreement of specific epithet)
Planaxis buccinoides Deshayes, 1828: synonym of Planaxis sulcatus (Born, 1778)
Planaxis canaliculata Duval, 1840: synonym of Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825) (incorrect gender agreement of specific epithet)
Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825)
Planaxis cingulata Gould, 1861: synonym of Cronia avenacea|Cronia (Usilla) avenacea (Lesson, 1842): synonym of Usilla avenacea (Lesson, 1842) (junior homonym of Planaxis cingulata A. Adams, 1853; Planaxis gouldii E. A. Smith, 1872 is a replacement name.)
Planaxis circinatus Lesson, 1842: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus ' (G. B. Sowerby I, 1825)
†Planaxis dautzenbergi Glibert, 1949: synonym of † Stosicia planaxoides (Grateloup, 1838): synonym of † Stosicia buccinalis (Grateloup, 1828)
Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
Planaxis buccinea A. Adams, 1853: synonym of Planaxis buccineus A. Adams, 1853 (nomen dubium) (incorrect grammatical agreement of specific epithet)
Planaxis buccinoides Deshayes, 1828: synonym of Planaxis sulcatus (Born, 1778)
Planaxis canaliculata Duval, 1840: synonym of Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825) (incorrect gender agreement of specific epithet)
Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825)
Planaxis cingulata Gould, 1861: synonym of Cronia avenacea|Cronia (Usilla) avenacea (Lesson, 1842): synonym of Usilla avenacea (Lesson, 1842) (junior homonym of Planaxis cingulata A. Adams, 1853; Planaxis gouldii E. A. Smith, 1872 is a replacement name.)
Planaxis circinatus Lesson, 1842: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus ' (G. B. Sowerby I, 1825)
†Planaxis dautzenbergi Glibert, 1949: synonym of † Stosicia planaxoides (Grateloup, 1838): synonym of † Stosicia buccinalis (Grateloup, 1828)
Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213