Cliff Collapse Reveals 313-million-year-old Fossil Footprints in Grand Canyon National Park
GRAND CANYON, AZ. – Paleontological research has confirmed a series of recently discovered fossils tracks are the oldest recorded tracks of their kind to date within Grand Canyon National Park. In 2016, Norwegian geology professor, Allan Krill, was hiking with his students when he made a surprising discovery. Lying next to the trail, in plain […]








