Diapsida Osborn 1903 [Laurin 1991] see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
Count: -
   Archosauromorpha xxxHuene 1946 [Gauthier, Kluge & Rowe 1988] see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
  Count: -
     Archosauria Cope, 1869
    Count: -
       Ornithosuchia see [unranked] Avesuchia Benton, 1999
      Count: -
         Ornithodira Gauthier 1986 see Clade Ornithodira Gauthier 1986 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
        Count: -
           Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
          Count: -
             Saurischia Seeley 1887 [Gauthier 1986], nom. cl. inval. see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
            Count: -
               Theropoda Marsh 1881 [Gauthier 1986] see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
              Count: -
                 Tetanurae Gauthier 1986
                Count: -
                   Coelurosauria Huene 1914 [Gauthier 1986]
                  Count: -
                     Maniraptora Gauthier 1986
                    Count: -
                       1 Family †Elmisauridae Osmolska, 1981 see Subfamily Elmisaurinae Osmólska, 1981
                      Count: -
                       2.1 Family †Troodontidae Gilmore, 1924
                      Count: -
                       2.2 Family †Dromaeosauridae Matthew & Brown, 1922
                      Count: -
                       2.3 Aves Linnaeus 1758 [Gauthier 1986], nom. cl. inval. see Subclass Aves Linnaeus, 1758
                      Count: -