Tiny Sideways Walking Reptile Footprints Found In Grand Canyon

https://www.livescience.com/64097-oldest-vertebrate-footprints-grand-canyon.html?utm_source=ls-newsletter&utm_medium=email&utm_campaign=20181117-ls

315 million year old tiny sideways walking reptile-like footprints found in Grand Canyon…

(Photo courtesy of Livescience.com)

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