Class Mammalia Linnaeus, 1758 - mammals Order Chiroptera Blumenbach, 1779 - bats Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats Genus Molossus Geoffroy, 1805 - velvety free-tailed bats Molossus pretiosus Miller, 1902 - Miller's mastiff-bat