
First Adult T. rex Trackway Shows How Fast the Giant Walked
Paleontologists in the badlands of southwestern North Dakota near Marmarth uncovered a four-footprint trackway dated about 66.5 million years ago, marking the first known set of footprints from an adult T. rex. Each print is roughly 3 feet long with about a 13-foot stride, suggesting the dinosaur walked at roughly 3.5–4.5 mph rather than ran; researchers used high‑resolution 3D scanning to study and replicate the tracks without disturbing the site, and three of the four footprints will later be moved to the Denver Museum of Nature & Science for preservation.













