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], nom. cl. inval.
                                 Tetanurae Gauthier 1986 [Gauthier 1986]
                                   Avetheropoda Paul 1988 [Padian et al. 1999]
                                     Coelurosauria Huene 1914 [Gauthier 1986]
                                       Tyrannoraptora Sereno 1999 [nom. cl. nov.], nom. cl. inval.
                                         Maniraptoriformes Holtz 1995 [Holtz 1996]
                                           Maniraptora Gauthier 1986 [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 [Gauthier 1986]
                                                   Aves Linnaeus 1758 [Gauthier 1986] see Class Aves Linnaeus, 1758
                                                     Pygostylia Chatterjee 1997 [Chiappe 2001]
                                                       Ornithothoraces Chiappe 1995 [Chiappe 1995]
                                                         †Enantiornithes Walker 1981 [Sereno 1998] see Infraclass Enantiornithes Walker, 1981
                                                           01.1 Genus †Noguerornis Lacasa-Ruiz, 1989
                                                           01.2 Genus †Iberomesornis Sanz & Bonaparte, 1992
                                                           02 Genus †Alexornis Brodkorb, 1976
                                                           03 Genus †Avisaurus Brett-Surman & Paul, 1985
                                                           04 Genus †Boluochia Zhou, 1995
                                                           05 Genus †Cathayornis Zhou, Jin & Zhang, 1992
                                                           06 Genus †Eocathayornis Zhou, 2002
                                                           07 Genus †Eoenantiornis L. Hou et al., 1999
                                                           08 Genus †Enantiornis C.A. Walker, 1981
                                                           09 Genus †Gurilynia Kurochkin, 1999
                                                           10 Genus †Halimornis Chiappe et al., 2002
                                                           11 Genus †Kizylkumavis Nessov, 1984
                                                           12 Genus †Lectavis Chiappe, 1993
                                                           13 Genus †Lenesornis Kurochkin, 1996
                                                           14 Genus †Nanantius Molnar, 1986
                                                           15 Genus †Otogornis Hou, 1994
                                                           16 Genus †Protopteryx Zhang & Zhou, 2000
                                                           17 Genus †Sazavis Nessov & Yarkov, 1989
                                                           18 Genus †Soroavisaurus Chiappe, 1993
                                                           19 Genus †Yungavolucris Chiappe, 1993
                                                           20 Genus †Zhyraornis Nessov, 1984
                                                           21 †Euenantiornithes Chiappe 2002 [Chiappe 2002] see Superorder Euenantiornithes Chiappe, 2002