Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Archonta Gregory, 1910
                           Order Chiroptera Blumenbach, 1779 - bats
                             Suborder Microchiroptera Dobson, 1875 see Order Chiroptera Blumenbach, 1779
                               Infraorder Yangochiroptera Koopman, 1984 see Suborder Vespertilioniformes
                                 Superfamily Vespertilionoidea Gray, 1821
                                   Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats
                                     Subfamily Molossinae Gervais, 1856
                                       Genus Nyctinomops Miller, 1902 - New World free-tailed bats