Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
Reptilia Linnaeus 1758 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.
see Class Reptilia Linnaeus, 1758
Sauria McCartney 1802 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.
see Clade Sauria Macartney 1802 [Gauthier & de Queiroz 2020]
Lepidosauria Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval.
see Class Lepidosauria Haeckel, 1866
Genus Sphenodon Gray, 1831