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
                     01 Genus †Kokopellia Cifelli, 1993
                     02 Genus †Aenigmadelphys Cifelli & Johanson, 1994
                     03 Genus †Iugomortiferum Cifelli, 1990
                     04 Genus †Anchistodelphys Cifelli, 1990
                     05 Genus †Gashternia Simpson, 1935
                     06 Genus †Thylacotinga Archer, Godthelp & Hand, 1993
                     07 Family †Yingabalanaridae Archer, Every, Godthelp, Hand & Scally, 1990
                     08 Suborder †Archimetatheria Szalay, 1993 see Order Archimetatheria Szalay, 1994
                     09 Magnorder Australidelphia Szalay, 1982
                     10 Magnorder Ameridelphia Szalay, 1982 see Clade Ameridelphia Szalay 1982