Professor Alan Krill discovered 313 million-year-old fossil footprints at Grand Canyon

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, NTNU professor, Allan Krill, was hiking with his students when he made a surprising discovery

Read the whole story at CNN

Read more about this in the paper published this week in the journal Plos One called «Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways» by the authors Stephen Rowland, Mario Caputo and Zachary Jensen here