Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Testudinata Oppel, 1811 [monotypic] - testudinates
               Order Chelonia Brongniart, 1800 see Class Chelonia Brongniart, 1800
                 1 Suborder †Proganochelydia
                 2 Suborder Pleurodira Cope, 1864
                 3 Suborder Cryptodira Cope, 1868
                 4 Family †Sinemydidae Yeh, 1963, incertae sedis
                 5 Family †Kallokibotiidae Nopcsa, 1923, incertae sedis
                 6 Family †Pleurosternidae Hay, 1930, incertae sedis
                 7 Family †Chelycarapookidae Warren, 1969, incertae sedis