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Paleolithic hunters built mammoth traps in what is now Mexico some 14,700 years ago. An unknown sea creature left footprints in sand some 550 million years ago, making them the oldest known footprints on Earth. The mysterious Denisovan humans reached southeast Asia 160,000 years ago, as evidenced by a jawbone found on…

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Source: https://gizmodo.com/how-do-we-know-how-old-fossils-are-1847550187
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The Article Was Written/Published By: George Dvorsky