Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           Class Reptilia Linnaeus, 1758 [paraphyletic] - 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 †Thecodontia Owen, 1859 see Division Archosauria Cope, 1869
                     01 Suborder †Proterosuchia Broom, 1906 see Order Proterosuchia Broom, 1906
                     02 Suborder †Ornithosuchia (Huene, 1908)
                     03 Suborder †Rauisuchia Bonaparte, 1982 - rauisuchians see [unranked] Rauisuchia Bonaparte, 1982
                     04 Suborder †Aetosauria Nicholson & Lydekker, 1889 [monotypic] see Order Aetosauria Nicholson & Lydekker, 1889
                     05 Family †Erpetosuchidae Watson, 1917
                     06 Family †Ctenosauriscidae Kuhn, 1964
                     07 Family †Gracilisuchidae Butler, Sullivan, Ezcurra, Liu, Lecuona & Sookias, 2014
                     08 Family †Scleromochlidae Huene, 1914 [monotypic]
                     09 Genus †Megalancosaurus Calzavara et al., 1981
                     10 Suborder †Phytosauria Jaeger, 1828 [monotypic] see Order Phytosauria Jaeger, 1828
                     11 Genus †Clarencea Brink, 1959, incertae sedis
                     12 Genus †Dongusia Huene, 1940, nom. dub., incertae sedis
                     13 ?Genus †Doswellia Weems, 1980
                     14 Genus †Fenhosuchus Young, 1964, incertae sedis
                     15 Genus †Heleosaurus Broom, 1907, incertae sedis
                     16 ?Genus †Megalancosaurus Calzavara et al., 1981
                     17 ?Genus †Microchampsa Young, 1951, nom. dub.
                     18 Genus †"Pallisteria" Charig, 1967, nom. nud., incertae sedis
                     19 Genus †"Teleocrater" Charig, 1956, nom. nud., incertae sedis see Genus Teleocrater Nesbitt, Butler, Ezcurra, Barrett, Stocker, Angielczyk, Smith, Sidor, Niedzwiedzki, Sennikov & Charig, 2017
                     20 Genus †Strigosuchus Simmons, 1965, nom. dub., incertae sedis