1. Species Gymnoplax bourdoti Rochebrune, 1883 †
2. Species Gymnoplax chalmasi Rochebrune, 1883 † (uncertain > taxon inquirendum)
3. Species Gymnoplax gaudryi Rochebrune, 1883 † (uncertain > taxon inquirendum)
4. Species Gymnoplax hamyi Rochebrune, 1882 (uncertain > unassessed)
5. Species Gymnoplax alphonsinae Rochebrune, 1884 accepted as Rhyssoplax aerea (Reeve, 1847) (junior subjective synonym)
6. Species Gymnoplax anaglyptus Rochebrune, 1884 accepted as Ischnochiton (Ischnochiton) dispar (G. B. Sowerby I, 1832) represented as Ischnochiton dispar (G. B. Sowerby I, 1832)
7. Species Gymnoplax benoisti Rochebrune, 1883 † accepted as Lepidopleurus benoisti (Rochebrune, 1883) † (original combination)
8. Species Gymnoplax bohemicus Rochebrune, 1883 † accepted as Rhyssoplax olivacea (L. Spengler, 1797) (junior homonym and junior secondary synonym)
9. Species Gymnoplax deslongchampsi Rochebrune, 1883 † accepted as Craspedochiton altavillensis (G. Seguenza, 1876) † (unaccepted > junior subjective synonym)
10. Species Gymnoplax insularis Rochebrune, 1882 accepted as Rhyssoplax canariensis (A. d'Orbigny, 1840)
11. Species Gymnoplax ludoviciae Rochebrune, 1884 accepted as Chiton granosus Frembly, 1827
12. Species Gymnoplax orbignyi Rochebrune, 1883 † accepted as Rhyssoplax miocenica (Michelotti, 1847) † (unaccepted > junior subjective synonym)
13. Species Gymnoplax raduliferus Rochebrune, 1883 † accepted as Ischnochiton raduliferus (Rochebrune, 1883) † (unaccepted > superseded combination)
14. Species Gymnoplax rhynchotus Rochebrune, 1884 accepted as Rhyssoplax rhynchota (Rochebrune, 1884) (original combination)
15. Species Gymnoplax spiciferus Rochebrune, 1884 accepted as Ischnochiton pectinatus (G. B. Sowerby II, 1840) accepted as Ischnoplax pectinata (G. B. Sowerby II, 1840)
16. Species Gymnoplax urvillei Rochebrune, 1881 accepted as Ischnochiton contractus (Reeve, 1847)
17. Species Gymnoplax zitteli Rochebrune, 1883 † accepted as Callistochiton zitteli (Rochebrune, 1883) † (unaccepted > superseded combination)

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