Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [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
                   Placentalia Owen, 1837 - placentals
                     Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Preptotheria McKenna, 1975
                         Ferae Linnaeus, 1758
                           Carnivora Bowdich, 1821 - carnivores
                             Caniformia Kretzoi, 1943
                               Arctoidea Flower, 1869
                                 Mustelida Tedford, 1976 see Parvorder Musteloidea Kretzoi, 1929
                                   Mustelidae Batsch, 1788 - weasels, badgers, skunks, and otters
                                     Mephitinae Bonaparte, 1845 - skunks see Family Mephitidae Bonaparte, 1845
                                       †Plesiomeles Viret & Crusafont Pairo, 1955