Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Mammalia Linnaeus, 1758 - mammals
             Subclass Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Infraclass Eutheria Gill, 1872
                   Order Dermoptera Dobson, 1883 [monotypic]
                     Superfamily Plagiomenoidea Matthew, 1918
                       1 Family †Plagiomenidae Matthew, 1918
                       2 Family Galeopithecidae Gray, 1821 see Family Cynocephalidae Simpson, 1945 (1821)
                       3 ?Family †Mixodectidae Cope, 1883
                       4 Family †Placentidentidae Russell, Louis & Savage, 1973 see Subfamily Placentidentinae Russell, Louis & Savage, 1973