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SYDNEY - British scientists believe that they have unearthed human footprints in central Mexico that are approximately 40,000 years old. The discovery is set to challenge previous studies that put the arrival of the first humans in the Americas close to 13,500 years ago
Using laser technology, an international team of scientists analyzed the footprints and dated them at around 40,000 years ago. These findings pose a challenge to previously held ideas about the settlement of the Americas.
Previously it has been accepted by the scientific community that the first humans arrived in North America after the last ice age about 13,500 years ago.
Professor David Huddart, of Moores University, and a collaborator on the discovery said: “The existence of 40,000-year-old human footprints in Mexico means that the ‘Clovis First’ model of human occupation can no longer be accepted as the first evidence of human presence in the Americas.”