subdivision
| - * Anchignathodontidae (Clark, 1972)
* Cavusgnathidae (Austin & Rhodes, 1981)
* Cryptotaxidae (Klapper & Philip, 1971)
* Elictognathidae (Austin & Rhodes, 1981)
* Gnathodontidae (Sweet, 1988)
* Idiognathodontidae (Harris & Hollingsworth, 1933)
* Kockelellidae (Klapper, 1981)
* Mestognathidae (Austin & Rhodes, 1981)
* Palmatolepidae (Sweet, 1988)
* Polygnathidae (Bassler, 1925)
* Pterospathodontidae (Cooper, 1977)
* Spathognathodontidae (Hass, 1959)
* Sweetognathidae (Ritter, 1986) (en)
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