Infraphylum Tetrapoda Goodrich, 1930 see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
   Superclass Amniota Haeckel, 1866 see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
     Paraclass Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
       Parasubclass Diapsida Osborn, 1903 [paraphyletic] - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
         Parainfraclass Archosauria Cope, 1869 [paraphyletic] see Clade Archosauria Cope 1869 [Gauthier & Padian 2020]
           Parasuperorder †Theropodomorpha Olshevsky, 1991 [paraphyletic]
             Paraorder †Theropoda Marsh, 1881 [paraphyletic]
               Suborder †Deinonychosauria Colbert & Russell, 1969 see Cohort Deinonychosauria Colbert & Russell, 1969
                 Family †Troodontidae Gilmore, 1924
                   1 Genus †Borogovia Osmólska, 1987, sedis mutabilis
                   2 Genus †Heptasteornis Harrison & Walker, 1975, nom. dub.
                   3 Genus †Saurornithoides Osborn, 1924
                   4 Genus †"Sinornithoides" Anon., 1990, nom. nud. see Genus Sinornithoides Russell & Dong, 1993
                   5 Genus †Tochisaurus Kurzanov & Osmólska, 1991
                   6 Genus †Troodon Leidy, 1856, nom. dub.