Some researchers think Homo erectus evolved in East Africa, where many of the oldest fossils have been found, but the discovery in the 1990s of equally old Homo erectus fossils in the country of Georgia has led others to suggest an Asian origin.

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These were Australopithecus (or Paranthropus) robustus and an early species of Homo, possibly Homo erectus.

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Comparisons with other sites show that Homo erectus survived successive warm and cold periods in northern Asia.

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