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245 _aSearch for the First Human (Sahelanthropus Tchadensis)
300 _aSahelanthropus Tchadensis is one of the oldest known species on the human family tree. This species lived sometime between 7 and 6 million years ago in West-Central Africa (Chad). Walking upright may have helped this species survive in the diverse habitats - including...
650 _xScience.
856 _uhttp://topdocumentaryfilms.com/search-first-human-sahelanthropus-tchadensis/
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