Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Reptilia Linnaeus, 1758 - reptiles Subclass Anapsida Osborn, 1903 - anapsids 1 Order †Cotylosauria Cope, 1880 2 Order †Mesosauria Seeley, 1892 3 Order Testudines Wagler, 1830 - turtles