T-Rex

L.J. Krumenacker

New research shows that horse-sized, T-Rex-like dinosaurs roamed southern Idaho 100 million years ago. This discovery shows Idaho was home to more types of dinosaurs than previously thought.

Paleontologist L.J. Krumenacker has been digging up dinosaurs in Idaho for more than a decade. But in the past, scientists have mostly found small burrowing dinosaurs.

Working with a team of Montana State University paleontologists, Krumenacker found the teeth and small bones of three types of theropods, the family of animals that includes Tyrannosaurus Rex.