Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
   Amphibia Gray 1825 [Gauthier, Kluge & Rowe 1988] - amphibians see Class Amphibia Gray, 1825
     Batrachia Latreille, 1800
       Caudata Fischer von Waldheim, 1813 see Order Caudata Scopoli, 1777
         Cryptobranchoidei Noble, 1931
           Family Hynobiidae Cope, 1859 (1856)
             Genus Pachyhynobius Fei, Qu & Wu, 1983