Phylum [Vertebrata] (Lamarck, 1801)
   Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
     Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887
       1 Order †Aistopoda (Miall, 1875) see Order Aïstopoda
       2 Order †Nectridea Miall, 1875
       3 Order †Microsauria Dawson, 1863