https://www.unlv.edu/news/release/tiny-footprints-big-discovery-reptile-tracks-oldest-ever-found-grand-canyon
Tiny Footprints, Big Discovery: Reptile Tracks Oldest Ever Found in Grand Canyon | News Center |...
May 6, 2024 - UNLV geologist investigating 310 million-year-old fossil trackway from ancient reptilian creature.
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