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]
                             Eusaurischia Padian et al., 1999
                               Theropoda Marsh 1881 [Gauthier 1986]
                                 Tetanurae Gauthier 1986
                                   Avetheropoda Paul 1988 [Padian et al. 1999]
                                     Coelurosauria Huene 1914 [Gauthier 1986]
                                       Tyrannoraptora Sereno 1999, nom. cl. inval.
                                         Maniraptoriformes Holtz 1995 [Holtz 1996]
                                           Maniraptora Gauthier 1986
                                             Paraves Sereno 1997 [Sereno 1998]
                                               Eumaniraptora Padian, Hutchinson & Holtz 1997 [Padian et al. 1999] see Clade Paraves Sereno 1997 [Sereno 1998]
                                                 Avialae Gauthier 1986
                                                   Aves Linnaeus 1758 [Gauthier 1986], nom. cl. inval. see Class Aves Linnaeus, 1758
                                                     Pygostylia Chatterjee 1997 [Chiappe 2001]
                                                       Ornithothoraces Chiappe 1995
                                                         †Enantiornithes Walker 1981 [Sereno 1998] see Infraclass Enantiornithes Walker, 1981
                                                           Genus †Avisaurus Brett-Surman & Paul, 1985
                                                             †Avisaurus archibaldi Brett-Surman & G.S. Paul, 1985