vertebrates Cuvier, 1812 - vertebrates
   Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
     Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758
       1 Order †Temnospondyli Zittel, 1888 - temnospondyls
       2 Order †Batrachosauria Efremov, 1946 see [unranked] Batrachosauria
       3 Order †Microsauria Dawson, 1863