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#early humans #paleolithic #stone age #hominin evolution #tool use #control of fire #fossil record

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#neogene period #hominin evolution #human ancestors #bipedalism #pliocene #miocene #paleoanthropology #cenozoic era

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#niarb llams #hominin evolution #brain size #ape to human #upright walking #primitive human

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#bipedalism #hominin evolution #ape ancestor #fossil footprints #laetoli #upright walking #arboreal