Diapsida Osborn 1903 [Laurin 1991]
see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
Archosauromorpha xxxHuene 1946 [Gauthier, Kluge & Rowe 1988]
see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
Archosauria Cope, 1869
Ornithosuchia
see [unranked] Avesuchia Benton, 1999
Ornithodira Gauthier 1986
see Clade Ornithodira Gauthier 1986 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval.
see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
†Ornithischia Seeley 1887 [Padian & May 1993]
see Order Ornithischia Seeley, 1887
†Genasauria Sereno 1986
†Cerapoda Sereno, 1986
see Suborder Cerapoda Sereno, 1986
†Ornithopoda Marsh 1881
see Infraorder Ornithopoda Marsh, 1881
†Euornithopoda Sereno 1986
†Iguanodontia Dollo 1888
1 Family †Dryosauridae Stefano, 1903
2 †Ankylopollexia Sereno 1986