Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988] Clade Epicynodonts Hopson & Kitching 2001 Clade Eucynodontia Kemp 1982 [Rowe 1993] Clade Mammaliamorpha Rowe 1988 Class Mammalia Linnaeus, 1758 - mammals Clade Trechnotheria McKenna 1975 Clade Cladotheria McKenna 1975 Clade Zatheria McKenna 1975 Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001 Infraclass Metatheria Huxley, 1880 Cohort Marsupialia Jameson, 1818 - marsupials Superorder †Asiadelphia Trofimov & Szalay, 1993 see Order Asiadelphia Trofimov & Szalay, 1993