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 Chiroptera Blumenbach, 1779 - bats
                     Suborder Microchiroptera Dobson, 1875 see Order Chiroptera Blumenbach, 1779
                       Superfamily Vespertilionoidea Gray, 1821
                         1 Family Myzopodidae Thomas, 1904
                         2 Family Vespertilionidae Gray, 1821 - vespertilionid bats
                         3 Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats