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 †Symmetrodonta Simpson, 1925 - symmetrodonts
see Infraclass Symmetrodonta Simpson, 1925
Ref: M.C. McKenna & S.K. Bell, 1997: 44
Order †Spalacotherioidea Prothero, 1981
see Order Spalacotheriida Prothero, 1981
Ref: M.C. McKenna & S.K. Bell, 1997: 45
1 Family †Tinodontidae Marsh, 1887
Ref: M.C. McKenna & S.K. Bell, 1997: 45
2 Family †Spalacotheriidae Marsh, 1887
Ref: M.C. McKenna & S.K. Bell, 1997: 45
3 Family †Barbereniidae Bonaparte, 1990
Ref: M.C. McKenna & S.K. Bell, 1997: 45