Click Here to Read: These Four Giant Dinosaur Footprints Discovered in North Dakota Might Represent the First Trackway Made by an Adult T. Rex Ever Found. A high school teacher first spotted the remarkable trail while volunteering on a paleontological dig. Researchers suspect a hulking, full-grown dinosaur marched through the then-swampy landscape roughly 66.5 million years ago by Sarah Kutant on the Smithsonian Magazine website on September 15, 2026.
Image: User:tlcoles. Public Domain via Wikimedia Commons.

