Class Mammalia Linnaeus, 1758 - mammals
   Order Chiroptera Blumenbach, 1779 - bats
     Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats
       Genus Nyctinomops Miller, 1902 - New World free-tailed bats
         1 Nyctinomops aurispinosus (Peale, 1848)
         2 Nyctinomops femorosaccus (Merriam, 1889) - pocketed free-tailed bat
         3 Nyctinomops laticaudatus (Geoffroy, 1805)
         4 Nyctinomops macrotis (Gray, 1840) - big free-tailed bat