Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           Class Mammalia Linnaeus, 1758 - mammals
             Subclass Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Infraclass Metatheria Huxley, 1880 [monotypic]
                   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
                     Australasian Marsupialia
                       Suborder Dasyuroidea Goldfuss, 1820
                         1 Family Dasyuridae Goldfuss, 1820 - marsupial "mice" and "cats", and Tasmanian devil
                         2 Family ‡Thylacinidae Bonaparte, 1838
                         3 Family Myrmecobiidae Waterhouse, 1841
                         4 Family Notoryctidae Ogilby, 1892