Originally Posted: November 18, 2015
Archaeologist Tom Dillehay didn’t want to return to Monte Verde. Decades ago, his discoveries at the famous site in southern Chile showed that humans occupied South America by 14,500 years ago, thousands of years earlier than thought, stirring a long and exhausting controversy. Now, Dillehay, of Vanderbilt University in Nashville, has been lured back—and he is preparing for renewed debate. He reports in PLOS ONE today that people at Monte Verde built fires, cooked plants and meat, and used tools 18,500 years ago, which would push back the peopling of the Americas by another 4000 years.
If his team is correct, the discovery will “shake up both the archaeology and genomics of the peopling of the Americas,” says archaeologist Jon Erlandson of the University of Oregon in Eugene. Genetic studies suggest that the ancestors of Paleoindians first left Siberia no earlier than 23,000 years ago (Science, 21 August, p. 841), so Dillehay’s new dates suggest they wasted little time in reaching the southern tip of the Americas. And the find raises questions about the North American record, where no one has found widely accepted evidence of occupation before 14,300 years ago. “Where the hell were the people in North America at that hour?” wonders archaeologist David Meltzer of Southern Methodist University in Dallas, Texas. READ MORE