Dinosauria Owen 1841
   Saurischia Seeley 1887 [Gauthier 1986]
     Theropoda Marsh 1881 [Gauthier 1986], nom. cl. inval.
       Neotheropoda Bakker 1986 [Sereno 1998]
         Tetanurae Gauthier 1986 [Gauthier 1986]
           Neotetanurae Sereno et al. 1994 see Clade Avetheropoda Paul 1988 [Padian et al. 1999]
             Coelurosauria Huene 1914 [Gauthier 1986]
               Maniraptoriformes Holtz 1995 [Holtz 1996]
                 Maniraptora Gauthier 1986 [Gauthier 1986]
                   Paraves Sereno 1997 [Sereno 1998]
                     Aves Linnaeus 1758 [Gauthier 1986] see Class Aves Linnaeus, 1758
                       Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
                         Ornithothoraces Chiappe 1995 [Chiappe 1995]
                           †Enantiornithes Walker 1981 [Sereno 1998] see Infraclass Enantiornithes Walker, 1981