Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
see Infraphylum Vertebrata Lamarck, 1801
Class Reptilia Linnaeus, 1758 - reptiles
Subclass Diapsida Osborn, 1903 - diapsids
see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
Infraclass Lepidosauromorpha Benton, 1983
see Subclass Lepidosauromorpha Benton, 1983
Superorder †Sauropterygia Owen, 1860
Order †Nothosauria Baur, 1889 - nothosaurs
see Suborder Nothosauria Baur, 1889