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
                     1 Family †Metacheiromyidae Wortman, 1903
                     2 Family †Epoicotheriidae Simpson, 1927
                     3 ?Family †Ernanodontidae Ding, 1979