(C) Ability to make tools, The first unquestionable stone tools were evidently made and used by early transitional humans and possibly Australopithecus garhi in East Africa about 2.5 million years ago. While the earliest sites with these tools are from the Gona River Region of Ethiopia, simple tools of this kind were first discovered by Mary and
Louis Leakey associated with Homo habilis at Olduvai Gorge in
Tanzania.
Australopithecus, group of extinct primates closely related to, if not actually ancestors of, modern human beings and known from a series of fossils found at numerous sites in eastern, north-central, and southern Africa.
Homo habilis, extinct species of human, the most ancient representative of the human genus, Homo. Homo habilis inhabited parts of sub-Saharan Africa from roughly 2.4 to 1.5 million years ago.
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