Humans lived in South America many thousands of years earlier than previously believed, during the height of the Last Ice Age. A new archaeological study discovered this by analyzing a trio of necklaces made from ground sloth bones. -
, scientists uncovered a cave in northern Mexico that contained stone tools dated to some 33,000 years ago.claimed to have identified 24,000-year-old butchery marks on bones found in a cave in the Yukon area.The bone pendants from the new study originated in the Santa Elina rock shelter in Western Brazil, a well-studied site where scientists found the skeletons of two extinct giant ground sloths.
With three different techniques, the researchers had dated the layer where they’d found the bone pendants to some 27,000 years ago, roughly the time of the Last Glacial Maximum. During that phase, Ice Age glaciers would have peaked and ocean levels would have dropped to 400 feet lower than today.For whatever reasons, the people living in Santa Elina sought to express themselves through bone adornments.
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