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
       1 Genus †Murtoilestes Averianov & Skutschas, 2001
       2 Genus †Prokennalestes Kielan-Jaworowska & Dashzeveg, 1989
       3 Genus †Eomaia Ji, Luo, Yuan, Wible, Zhang & Georgi, 2002
       4.1 Genus †Montanalestes Cifelli, 1999
       4.2.1 Genus †Daulestes Trofimov & Nessov, 1979
       4.2.2.1 Genus †Kennalestes Kielan-Jaworowska, 1968
       4.2.2.2.1 Order †Didelphodonta McKenna, 1975
       4.2.2.2.2.1 Order †Asioryctitheria Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997
       4.2.2.2.2.2 Cohort Placentalia Owen, 1837 - placentals