Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
   Saurischia Seeley 1887 [Gauthier 1986], nom. cl. inval. see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
     Theropoda Marsh 1881 [Gauthier 1986] see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
       Neotheropoda Bakker 1986 [Sereno 1998]
         †Ceratosauria Marsh 1895 [Rowe & Gauthier 1990]
           †Ceratosauroidea Bonaparte et al. 1990 see Superfamily Ceratosauroidea Marsh, 1884
             1 Genus †Ceratosaurus Marsh, 1884
             2.1 Genus †Elaphrosaurus Janensch, 1920
             2.2 †Abelisauridae Bonaparte & Novas 1985 [Novas 1997] see Family Abelisauridae Bonaparte & Novas, 1985