NPR News: Fallen Boulder Reveals 313 Million-Year-Old Fossil Footprints At Grand Canyon

Fallen Boulder Reveals 313 Million-Year-Old Fossil Footprints At Grand Canyon
The side-by-side tracks of two ancient animals have been called "by far the oldest vertebrate tracks in Grand Canyon."

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Làm đẹp Blog 247 August 22, 2020 at 09:44AM
Category Health & Science