Emballonuridae

Emballonuridae is a family of microbats, many of which are referred to as sac-winged or sheath-tailed bats. They are widely distributed in tropical and subtropical regions around the world. The earliest fossil records are from the Eocene. They have the dental formula

These bats generally prefer to roost in better-illuminated areas than other species of bats. Their dwellings can often be found in hollow trees and entryways to caves or other structures. Some species, such as the genus Taphozous, live in large colonies, but others are solitary. Species living away from the tropics may enter periods of torpor or extended hibernation during colder months.