Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Mammalia Linnaeus, 1758 - mammals
             Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
                   Australasian Marsupialia
                     Diprotodonta Owen, 1866 see Order Diprotodontia Owen, 1866
                       Vombatoidea Burnett, 1830 see Suborder Vombatiformes Burnett, 1830
                         †Wynyardiidae Osgood, 1921