Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Teleostomi Tetrapoda Goodrich, 1930 Amniota Haeckel, 1866 - amniotes Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Theria of Metatherian-Eutherian grade Infraclass Eutheria Gill, 1872 Suborder †Palaeanodonta Matthew, 1918 see Order Palaeanodonta Matthew, 1918 Family †Epoicotheriidae Simpson, 1927