The mammoth bones are being hailed as the most conclusive evidence so far that the first humans arrived in North America up to 50,000 years ago — tens of thousands of years earlier than previously thought.
thought to be at least 21,000 years old — although that finding, too, is disputed.
“I think it’s a rock-solid radiocarbon date,” said paleontologist Timothy Rowe, a professor at the Jackson School of Geosciences at the University of Texas in Austin. “Skeptics will put everything under the microscope, but I think we checked every box.”in the journal Frontiers in Ecology and Evolution.
And they dispute that the fractures on the mammoth bones could only have been made by humans; instead, they might have been caused by a landslide or another natural event. The absence of distinctive stone tools at the Hartley site is also a problem. The researchers say the people who butchered the mammoths may not have used sophisticated stone tools, but only primitive tools indistinguishable from natural bones or rocks.
He said in an email that he’s unconvinced by the latest research on the mammoth bones and the idea that it shows people arrived in the Americas so long ago. “Anything is possible. However, we just have to have evidence to support the claim,” he said. “I don’t think they have sufficient evidence yet, and certainly not at this site.”
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