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 †Kuehneotheria McKenna, 1975 see Order Kuehneotheria McKenna, 1975
           Family †Woutersiidae Sigogneau-Russell & Hahn, 1995
             Genus †Woutersia Sigogneau-Russell, 1983