Phylum [Vertebrata] (Lamarck, 1801) Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825 Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758 Order †Temnospondyli Zittel, 1888 - temnospondyls Family †Plagiosauridae Abel, 1919 Genus †Gerrothorax Nilsson, 1934