Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Teleostomi Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988] Class Amphibia Gray, 1825 [paraphyletic] modern amphibian orders Order Urodela Dumeril, 1806 see Order Caudata Scopoli, 1777 Suborder †Prosirenoidea Estes, 1981 [monotypic] Family †Prosirenoideaᵀ Carroll, 1988, nom. null. see Family Prosirenidae Estes, 1969