ammonites
†unranked clade Diadectomorpha Watson 1917

Vertebrata - Cotylosauria

Alternative spelling: Diadectimorpha

Invalid subtaxa: Limnoscelops Lewis and Vaughn 1965 [nomen dubium], Limnoscelops longifemur Lewis and Vaughn 1965 [nomen dubium]

Parent taxon: Cotylosauria according to M. Laurin and R. R. Reisz 1995

Sister taxa: Amniota, Captorhinomorpha, Chamasaurus, Diadectosauria

Subtaxa: Diadectidae, Limnoscelidae, Tseajaiidae

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