Mammaliaformes Rowe, 1988
[crown clade] Mammalia Linnaeus, 1758
Theriiformes Rowe, 1988, new rank
Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995, new rank
Trechnotheria McKenna, 1975
Cladotheria McKenna, 1975
Zatheria [McKenna, 1975]
Tribosphenida McKenna, 1975:27, new rank
[crown clade] Theria Parker & Haswell, 1897:448, new rank
Placentalia Owen, 1837:903, new rank
Epitheria McKenna, 1975, new rank
Preptotheria [McKenna, 1975]
Ferae [Linnaeus, 1758]
Carnivora [Bowdich, 1821]
Caniformia [Kretzoi, 1943]
Arctoidea [Flower, 1869]
Ursida [Tedford, 1976]
Phocoidea [Gray, 1821]
Phocidae [Gray, 1821]
Odobeninae [Allen, 1880]
Odobenini [Allen, 1880]
Odobenina Allen, 1880, new rank - walruses
Odobenus [Brisson, 1762]