Tetrapoda Goodrich, 1930
   Amniota Haeckel, 1866 - amniotes
     Eureptilia Olson, 1947
       Diapsida Osborn 1903 [Laurin 1991]
         Neodiapsida Benton 1985 [Laurin 1991] see Clade Neodiapsida Benton 1985 [Laurin 1991] {Reisz, Modesto & Scott 2011}
           Archosauromorpha Huene 1946 [Gauthier, Kluge & Rowe 1988] {Laurin 1991}
             Archosauria Cope, 1869
               Avesuchia Benton, 1999
                 Avemetatarsalia Benton 1999
                   Ornithodira Gauthier 1986
                     Dinosauromorpha Benton 1985
                       Dinosauriformes Novas 1992
                         Dinosauria Owen 1841
                           Saurischia Seeley 1887 [Gauthier 1986]
                             1 †Herrerasauridae Benedetto, 1973
                             2.1 Genus †Eoraptor Sereno, Forster, Rogers & Monetta, 1993 [monotypic]
                             2.2 Eusaurischia Padian et al., 1999
                             3 †Alwalkeria Chatterjee & Creisler, 1994, incertae sedis [monotypic]
                             4 †Chindesaurus Long & Murry, 1995, incertae sedis [monotypic]