Geologists Find 310-Million-Year-Old Reptile Footprints in Grand Canyon National Park


Geologists have discovered a set of 28 footprints left behind by an ancient reptile approximately 310 million years ago in what is now Grand Canyon National Park.

The fossil trackway covers a boulder that rests along the Bright Angel Trail in Grand Canyon National Park.

http://www.sci-news.com/paleontology...ark-06592.html