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
                   †Asiadelphia [Trofimov & Szalay, 1993]
                     1 †Asiatheriidae [Trofimov & Szalay, 1994]