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 Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Ferae Linnaeus, 1758
                           Order Carnivora Bowdich, 1821 - carnivores
                             Suborder Caniformia Kretzoi, 1943
                               Infraorder Arctoidea Flower, 1869
                                 Parvorder Ursida Tedford, 1976
                                   Superfamily Phocoidea Gray, 1821
                                     01 Genus †Plesiocyon Schlosser, 1887
                                     02 Genus †Parictis Scott, 1893
                                     03 Genus †Nothocyon Matthew, 1899
                                     04 Genus †Adelpharctos de Bonis, 1971
                                     05 Genus †Amphicynodon Filhol, 1882
                                     06 Genus †Drassonax Galbreath, 1953
                                     07 Genus †Pachycynodon Schlosser, 1887
                                     08 Genus †Kolponomos Stirton, 1960
                                     09 Genus †Allocyon Merriam, 1930
                                     10 Genus †Enaliarctos Mitchell & Tedford, 1973
                                     11 Genus †Pteronarctos Barnes, 1989
                                     12 Family Otariidae Gray, 1825 - eared seals, fur seals, and sea lions
                                     13 Family Phocidae Gray, 1821 - true seals