[Archosauria] Cope 1869 [Gauthier & Padian 1985], nom. cl. inval. see Clade Archosauria Cope 1869 [Gauthier & Padian 2020]
   Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
     1 †Ornithischia Seeley 1887 [Padian & May 1993] see Order Ornithischia Seeley, 1887
     2 Saurischia Seeley 1887 [Gauthier 1986], nom. cl. inval. see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
     2.1.1 Genus †Herrerasaurus Reig, 1963
     2.1.2 Genus †Staurikosaurus Colbert, 1970
     2.2.1 Genus †Eoraptor Sereno, Forster, Rogers & Monetta, 1993
     2.2.2.1 Genus †Agnosphitys Fraser, Padian, Walkden & Davis, 2002
     2.2.2.2.1 Genus †Guaibasaurus Bonaparte, Ferigolo & Ribeiro, 1999
     2.2.2.2.2.1 Genus †Chindesaurus Long & Murry, 1995
     2.2.2.2.2.2 Neotheropoda Bakker 1986 [Sereno 1998]
     2.2.2.3 †Sauropodomorpha Huene 1932 [Salgado et al. 1997] see Order Sauropodomorpha Huene, 1932