Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Chiroptera Blumenbach, 1779 - bats
       Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats
         Subfamily Molossinae Gervais, 1856
           Genus Molossus Geoffroy, 1805 - velvety free-tailed bats
             Molossus molossus (Pallas, 1766) - Pallas' mastiff-bat
               1 [Molossus molossus molossus] (Pallas, 1766)
               2 Molossus molossus debilis Miller, 1913
               3 Molossus molossus fortis Miller, 1913
               4 Molossus molossus milleri Johnson, 1952
               5 Molossus molossus pygmaeus Miller, 1900
               6 Molossus molossus tropidorhynchus Gray, 1839
               7 Molossus molossus verrilli Allen, 1908