Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801 Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825 Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887 Order †Nectridea Miall, 1875 1 Family †Keraterpetontidae Jaekel, 1903