Chalicotheriidae is an extinct family of herbivorous, perissodactyl mammals. Unlike living odd-toed ungulates, chalicotheres bore large claws on their hands rather than hooves, thought to have been used for grasping vegetation, with their dentition being adapted for browsing. The family is known from the Oligocene to the Pleistocene, reached its greatest diversity in the Miocene, and is known from Asia, Europe, Africa and North America. Asia appears to have been the main centre of diversification for the group.