Homo erectus crania from the Turkana Rift. Left: WT 15000, 'Turkana Boy' from West Turkana. Right: ER 3733 from East Turkana (IMAGE)

Columbia Climate School

Homo erectus crania from the Turkana Rift. Left: WT 15000, 'Turkana Boy' from West Turkana. Right: ER 3733 from East Turkana

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Homo erectus crania from the Turkana Rift. Left: WT 15000, 'Turkana Boy' from West Turkana. Right: ER 3733 from East Turkana

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Photo: John Rowan

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