These footprints in New Mexico might rewrite the history of the peopling of the Americas. ScienceMagArchives
A smattering of sites have hinted at even older dates, but the claims have been controversial. For example, last year a, at least 27,000 years ago, but many archaeologists doubt the fractured rocks are stone tools.
“There is no doubt that these are human footprints,” says Kevin Hatala, an ancient footprint expert at Chatham University. Jennifer Raff, an anthropological geneticist at the University of Kansas, Lawrence, agrees. “So the question is then, how old are they?” “From the dating perspective I think the authors have done a very sound job,” says Tom Higham, a leading radiocarbon dating expert at the University of Oxford.
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