Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Clade Trechnotheria McKenna 1975
     Clade Alethinotheria Averianov, Martin & Lopatin 2013
       Clade Cladotheria McKenna 1975
         Clade Zatheria McKenna 1975
           1 Genus †Peramus Owen, 1871
           2.1 Genus †Kielantherium Dashzeveg, 1975
           2.2 Genus †Prokennalestes Kielan-Jaworowska & Dashzeveg, 1989