Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Chiroptera Blumenbach, 1779 - bats Family Emballonuridae Gervais, 1855 - sheath-tailed bats Subfamily Emballonurinae Gervais, 1855 Genus Balantiopteryx Peters, 1867 - least sac-winged bats Balantiopteryx io Thomas, 1904 - Thomas's least sac-winged bat