Kent Hups, a Colorado high school teacher and amateur fossil hunter, was looking for an easier route out of a narrow, rocky valley in North Dakota's badlands in 2025 when he noticed something unusual protruding from the ground. To Hups, who had spent about 30 years searching for ancient footprints as a hobby, the lumpy, wedge-shaped rock looked like three giant toes. He was volunteering with a fossil-digging team led by palaeontologist Tyler Lyson when he contacted him about the discovery. Lyson was sceptical and wanted more than a single unusual shape before accepting it as a dinosaur track. Further excavation revealed a sequence of four three-toed footprints stretching about 23 feet across the hillside. Researchers have identified an adult Tyrannosaurus rex as the most likely trackmaker, making it the first described trackway likely left by an adult T. rex. The approximately 66.5-million-year-old trail provides evidence of the dinosaur in motion, something that fossilised bones cannot show on their own. This extraordinary find highlights how patient persistence, combined with scientific rigor, can transform a single unusual observation into groundbreaking evidence of prehistoric behavior previously invisible to paleontologists.
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