Ce taxon est considéré comme subjective synonym of
du taxon valide Ornithischia
selon la Paleobiology Database.
Voir la fiche de Ornithischia →
Bibliographie
Description originale
E. D. Cope. 1866. [On the anomalous relations existing between the tibia and fibula in certain of the Dinosauria]. Proceedings of the Academy of Natural Sciences of Philadelphia 18:316-317