Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Marsupialia Jameson, 1818 - marsupials
                     Magnorder Australidelphia Szalay, 1982
                       Superorder Eometatheria Simpson, 1970
                         Grandorder Syndactyli Gill, 1871
                           Order Diprotodontia Owen, 1866
                             Superfamily Phalangeroidea Thomas, 1888 see Suborder Phalangeriformes Szalay, 1982
                               1 Family Phalangeridae Thomas, 1888 - possums and cuscuses
                               2 Family Burramyidae Broom, 1898 - pygmy possums
                               3 Family Macropodidae Gray, 1821 - wallabies and kangaroos
                               4 Family Petauridae Bonaparte, 1838 - gliding, ring-tailed, and striped possums
                               5 Family †Ektopodontidae Stirton, Tedford & Woodburne, 1967
                               6 Family Phascolarctidae Owen, 1839
                               7 Family †Pilkipildridae Archer, Tedford & Rich, 1987
                               8 Family †Miralinidae Woodburne, Pledge & Archer, 1987
                               9 Family Acrobatidae Aplin, 1987