Discovery of ancient stone tools in Brazil challenges belief about human arrival in the Americas
Archaeologists have announced the discovery of stone tools in Brazil which they say prove that ancient humans arrived in the Americas long before the Clovis people, upending the predominant theory of how the continent was settled.
According to current perspectives, the Clovis people arrived in the Americas from Asia about 13,000 – 15,000 years ago. However, researchers found stone tools embedded in a rock shelter where prehistoric humans once lived, which have been dated to 22,000 years.
“If they’re right, and there’s a great possibility that they are, that will change everything we know about the settlement of the Americas,” said Walter Neves, an evolutionary anthropologist at the University of Sao Paulo.
The stone tools were found in Serra Da Capivara National Park, Brazil, a region steeped in history with thousands of rock art paintings across 945 separate sites. The tools were dated using thermo luminescence, a technique that measures the exposure of sediments to sunlight, to determine their age.
Source: http://www.ancient-origins.net/news-evolution-human-origins/discovery-ancient-stone-tools-brazil-challenges-0988765
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