The earliest evidence of culture or presumed culture is that from Ft. Ternan in Kenya excavated by L. S. B. Leakey. At this site in a level dated to the Miocene period, approximately 15 million years of age, he has found the remains of Ramapithecus wickeri, a small primate. In the same deposits occur the broken bone remains of several animal species in association with a battered stone. It is Leakey's (personal communication 1970) contention that this find represents our earliest archaeological evidence of true tool using. He does not imply that this signifies culture or the presence of man. What he does suggest is that the history of tool use has an antiquity of at least 15 million years.