vertebrates Cuvier, 1812 - vertebrates Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825 Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887 Order †Nectridea Miall, 1875 Family †Urocordylidae Lydekker, 1890