Mammaliaformes Rowe 1988
   [crown clade] Mammalia Linnaeus, 1758 - mammals
     Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown clade] Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Marsupialia Jameson, 1818 - marsupials
                     Australidelphia Szalay, 1982
                       Eometatheria Simpson, 1970
                         Syndactyli Gill, 1871
                           Diprotodontia Owen, 1866
                             †Palorchestidae Tate, 1948
                               1 †Propalorchestes Murray, 1986
                               2 †Pitikantia Stirton, 1967
                               3 †Ngapakaldia Stirton, 1967
                               4 †Palorchestes Owen, 1873