Tag Archive for 'Grand Canyon'

Geologists Professor Stephen Rowland and Dr. Mario Caputo discovered that a set of 28 footprints left behind by a reptile 310 million years ago are the oldest ever to be found in Grand Canyon National Park. Image credit: Stephen Rowland.

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

Nov 9, 2018 by News Staff

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...

Grand Canyon at least 70 Million Years Old

Nov 30, 2012 by Natali Anderson

The combined uranium/thorium/helium dating of minerals from the bottom of the Grand Canyon in Arizona, the United States, indicates it was largely carved...