Scientists Just Found a Dino Artifact We’ve Never Seen Before—and It’s Answering a Major Riddle - Yahoo

Here’s what you’ll learn when you read this story:While adult T. rex footprints are rare on their own, paleontologists have discovered the first trackway, consisting of more than one print, thought to be made by an adult T. rex. The dinosaur had apparently been walking through soft sediment that eventually hardened into mudstone and sandstone, and it was moving at about 5 to 6.5 feet per second.Although the tracks were badly eroded, digital reconstructions showed how huge this animal was, and how fast and far it moved. Tyrannosaurus rex left behind the skeleton of its hulking frame, its bone-crushing skull, and its dagger-like teeth—but its footprints have remained elusive. The star of Jurassic Park and myriad other dinosaur horror movies has no print for the Hollywood Walk of Fame. Footprints from smaller, swifter juveniles have turned up before, but hardly any remain from the behemoths those juveniles grew into.