From the press release:
Newly Discovered Fossil Footprints from Grand Canyon National Park Force Paleontologists to Rethink Early Inhabitants of Ancient Deserts
New Mexico Museum of Natural History & Science
Close-up view of the Ichniotherium trackway from Grand Canyon National Park. Photo courtesy of Heitor Francischini.
Credit: Photo courtesy of Heitor Francischini.
Note: Representative image at left is often cropped for display purposes. Downloaded high-resolution images are not cropped.