Scientists say the jawbone of a Denisovan found in the Gansu region of Tibet is a prehistoric human species, proving wrong the previous belief that Homo Sapiens was the only species able to survive in extreme environments. Denisovans – the third species of human – were previously believed to have lived only in Siberia. A monk in Tibet discovered the jaw in 1980 while meditating in a holy cave and it later found it way to Chinese archeologists.



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