Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Order Chiroptera Blumenbach, 1779 - bats
                   Suborder Microchiroptera Dobson, 1875 see Order Chiroptera Blumenbach, 1779
                     Superfamily Vespertilionoidea Gray, 1821
                       Family Vespertilionidae Gray, 1821 - vespertilionid bats
                         Subfamily Vespertilioninae Gray, 1821
                           Genus Eptesicus Rafinesque, 1820 - big brown bats
                             Eptesicus fuscus (Beauvois, 1796) - big brown bat
                             Eptesicus nilssoni (Keyserling & Blasius, 1839) see Eptesicus nilssonii (Keyserling & Blasius, 1839)
                             Eptesicus serotinus (Schreber, 1774) - serotine
                             Eptesicus tenuipinnis (Peters, 1872) see Neoromicia tenuipinnis (Peters, 1872)