Scientists Spot 'Sailing Stone' Track in 200 Million-Year-Old Fossil

Remember those mysterious rocks that leave long tracks behind them without help from humans or gravity? Scientists think they've found an ancient track of one of these stones 'hiding in plain sight' in a dinosaur fossil.
Published: 9:46 AM PST December 12, 2019
Updated: 8:50 AM PST December 12, 2019