Class [Mammalia] Linnaeus, 1758 - mammals
   Order Chiroptera Blumenbach, 1779 - bats
     Suborder Microchiroptera Dobson, 1875 see Order Chiroptera Blumenbach, 1779
       Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats
         Genus Molossus Geoffroy, 1805 - velvety free-tailed bats
           1 Molossus ater Geoffroy, 1805 sensu auct. - black mastiff-bat see Molossus rufus Geoffroy, 1805
           2 Molossus barnesi Thomas, 1905
           3 Molossus bondae J.A. Allen, 1904 - Bonda mastiff-bat see Molossus currentium Thomas, 1901
           4 Molossus molossus (Pallas, 1766) - Pallas' mastiff-bat
           5 Molossus pretiosus Miller, 1902 - Miller's mastiff-bat
           6 Molossus sinaloae Allen, 1906 - Allen's mastiff-bat
           7 Molossus trinitatis - Trinidad mastiff-bat