Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Class Reptilia Linnaeus, 1758 - reptiles
       Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
         Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
           Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
             Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
               Suborder †Theropoda Marsh, 1881 see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
                 Infraorder †Deinonychosauria Colbert & Russell, 1969 see Cohort Deinonychosauria Colbert & Russell, 1969
                   Family †Troodontidae Gilmore, 1924
                     1 Genus †Borogovia Osmólska, 1987
                     2 Genus †Heptasteornis Harrison & Walker, 1975, nom. dub.
                     3 Genus †Paronychodon Cope, 1876, nom. dub.
                     4 Genus †Saurornithoides Osborn, 1924
                     5 Genus †Troodon Leidy, 1856, nom. dub.