Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Reptilia Linnaeus, 1758 - reptiles Subclass †Euryapsida Colbert, 1945 see Subclass Diapsida Osborn, 1903 Order †Ichthyosauria Blainville, 1835