The proposed age of these remarkable footprints was announced in 2021 by U.S. Geological Survey research geologists, but the finding was so extraordinary that it demanded additional testing.
A 2021 study caused a stir by claiming that a set of fossilized human footprints were 20,000 years old – much earlier earlier than humans were thought to have set foot in North America. Now two extra dating methods have seemingly confirmed the age.
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