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500 Million-Year-Old Human Footprint Fossil Baffles Scientists.
Man, I doubt that human beings were that old. I wonder if the Earth is really that old, or how long have humans actually lived on Earth. I can't see human beings being on this Earth for 500 million years.
500 Million-Year-Old Human Footprint Fossil Baffles Scientists
500 Million-Year-Old Human Footprint Fossil Baffles Scientists