Class Mammalia Linnaeus, 1758 - mammals
   Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
     Infraclass Eutheria Gill, 1872
       Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
         Superorder †Asioryctitheria Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997 see Order Asioryctitheria Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997
           Family †Asioryctidaeᵀ Kielan-Jaworowska, 1981
             Genus †Ukhaatherium Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997 [monotypic]
               1 †Ukhaatherium nessovi Novacek et al., 1997