1. Species Gnathaster dilatatus Sladen, 1889 accepted as Diplodontias dilatatus (Perrier, 1875)
2. Species Gnathaster elegans (Koehler, 1912) accepted as Odontaster meridionalis (E. A. Smith, 1876) (A synonym according to Fisher (1911))
3. Species Gnathaster elongatus Sladen, 1889 accepted as Acodontaster elongatus (Sladen, 1889) (junior synonym)
4. Species Gnathaster grayi (Bell, 1881) accepted as Odontaster penicillatus (Philippi, 1870) (A forma of O. penicillatus according to Fisher (1940))
5. Species Gnathaster mediterraneus von Marenzeller, 1893 accepted as Odontaster mediterraneus (von Marenzeller, 1893) (synonym)
6. Species Gnathaster meridionalis (E.A. Smith, 1876) accepted as Odontaster meridionalis (E. A. Smith, 1876) (Subsequent combination used by Sladen (1889))
7. Species Gnathaster pedicellaris (Perrier, 1891) accepted as Odontaster penicillatus (Philippi, 1870) (A synonym according to Fisher (1940))
8. Species Gnathaster penicillatus (Philippi, 1870) accepted as Odontaster penicillatus (Philippi, 1870) (subsequent combination of G. penicillatus Philippi, 1870)
9. Species Gnathaster pilulatus Sladen, 1889 accepted as Odontaster penicillatus (Philippi, 1870)
10. Species Gnathaster rugosus (Hutton, 1872) accepted as Diplodontias miliaris (Gray, 1847) (A synonym according to Farquhar (1907))
11. Species Gnathaster singularis (Müller & Troschel, 1843) accepted as Diplodontias singularis (Müller & Troschel, 1843)
12. Species Gnathaster tenuis (Koehler, 1906) accepted as Odontaster validus Koehler, 1906 (A forma according to Fisher (1940))
13. Species Gnathaster validus (Koehler, 1906) accepted as Odontaster validus Koehler, 1906 (subsequent combination of O. validus 1906)
14. Species Gnathaster verrucosus Sladen, 1889 accepted as Cycethra verrucosa (Philippi, 1857)

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