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Quick Facts 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 million to 1.5 million years ago (mya). In 1959 and 1960 the first fossils were discovered at Olduvai Gorge in northern Tanzania. This discovery was a turning point in the science of paleoanthropology because the oldest previously known human fossils were Asian specimens of Homo erectus. Many features...