UPDATE | Grand Canyon's Prehistoric Past Appears In 313-Million-Year-Old Tracks

A new chapter to Grand Canyon National Park's geologic past has come to light in the unique form of two sets of fossilized tracks more than 300 million years old that are lying in view of any hiker on the Bright Angel Trail. Those tracks, according to paleontologists, "are by far the oldest vertebrate tracks in Grand Canyon."
- By Kurt Repanshek - August 20th, 2020 10:37am