Mammaliaformes Rowe 1988
Ref: M.C. McKenna & S.K. Bell, 1997: 511
[crown] Class Mammalia Linnaeus, 1758 - mammals
Ref: M.C. McKenna & S.K. Bell, 1997: 35
Subclass Theriiformes Rowe, 1988
see Division Theriiformes Rowe, 1988
Ref: M.C. McKenna & S.K. Bell, 1997: 36 [new rank]
Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995
see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
Ref: M.C. McKenna & S.K. Bell, 1997: 43 [new rank]
Superlegion Trechnotheria McKenna, 1975
see Clade Trechnotheria McKenna 1975
Ref: M.C. McKenna & S.K. Bell, 1997: 43 [new position]
Legion Cladotheria McKenna, 1975
see Clade Cladotheria McKenna 1975
Ref: M.C. McKenna & S.K. Bell, 1997: 45
Sublegion Zatheria McKenna, 1975
see Clade Zatheria McKenna 1975
Ref: M.C. McKenna & S.K. Bell, 1997: 48
Infralegion Tribosphenida McKenna, 1975
see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
Ref: M.C. McKenna & S.K. Bell, 1997: 48 [new rank]
[crown] Supercohort Theria Parker & Haswell, 1897 - therians
see Subclass Theria Parker & Haswell, 1897
Ref: M.C. McKenna & S.K. Bell, 1997: 49 [new rank]
Cohort Placentalia Owen, 1837 - placentals
Ref: M.C. McKenna & S.K. Bell, 1997: 80 [new rank]
Magnorder Epitheria McKenna, 1975
see Cohort Placentalia Owen, 1837
Ref: M.C. McKenna & S.K. Bell, 1997: 102 [new rank]
Superorder Preptotheria McKenna, 1975
Ref: M.C. McKenna & S.K. Bell, 1997: 104 [new position]
Grandorder Anagalida Szalay & McKenna, 1971
see Order Anagalida Szalay & McKenna, 1971
Ref: M.C. McKenna & S.K. Bell, 1997: 104-105
Mirorder Simplicidentata Weber, 1904
Ref: M.C. McKenna & S.K. Bell, 1997: 113 [new rank]
Order Rodentia Bowdich, 1821 - rodents
Ref: M.C. McKenna & S.K. Bell, 1997: 114 [new position]
Suborder Myomorpha Brandt, 1855
see Infraorder Myomorphi
Ref: M.C. McKenna & S.K. Bell, 1997: 131
Infraorder Myodonta Schaub, 1955
see Infraorder Myomorphi
Ref: M.C. McKenna & S.K. Bell, 1997: 132 [new rank]
Superfamily Muroidea Batsch, 1788
Ref: M.C. McKenna & S.K. Bell, 1997: 135
Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
Ref: M.C. McKenna & S.K. Bell, 1997: 136
Subfamily Sigmodontinae Wagner, 1843
Ref: M.C. McKenna & S.K. Bell, 1997: 142
Tribe Neotomini Merriam, 1894
Ref: G.G. Musser, 1997: 142 [new rank]
Genus Nelsonia Merriam, 1897 - Nelson's wood rat
Ref: M.C. McKenna & S.K. Bell, 1997: 143 [new position]