organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
               Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
                 01 Order †Ichthyostegalia (Save-Soderbergh, 1932) see Superclass Tetrapoda Goodrich, 1930
                 02 Order †Temnospondyli Zittel, 1888 - temnospondyls
                 03 Order †Anthracosauria Säve-Söderbergh, 1934
                 04 Order †Microsauria Dawson, 1863
                 05 Order Caudata Scopoli, 1777
                 06 Order Gymnophiona Rafinesque, 1814 - caecilians
                 07 Order †Proanura Romer, 1945
                 08 Order Anura Fischer von Waldheim, 1813
                 09 Order †Aistopoda (Miall, 1875) see Order Aïstopoda
                 10 Order †Nectridea Miall, 1875