[Reptilia] Linnaeus 1758 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Class Reptilia Linnaeus, 1758
   1 Genus †Captorhinus Cope, 1895
   2.1 Genus †Paleothyris Carroll, 1969
   2.2 Clade Diapsida Osborn 1903 [Laurin 1991] see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]