Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     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