Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Reptilia Linnaeus, 1758 - reptiles
Subclass †Euryapsida Colbert, 1945
see Subclass Diapsida Osborn, 1903
1 Order †Araeoscelidia Williston, 1913
2 Order †Sauropterygia Owen, 1860
see Superorder Sauropterygia Owen, 1860
3 Order †Placodontia Owen, 1859
4 Order †Ichthyosauria Blainville, 1835