Before The Tyrannosaurus Rex There Was Siats Meekerorum

Though the discovery of dinosaur fossils is always an exciting event, the remains of one that roamed North America about 100 million years ago, is even more so. That's because while paleontologists have extensive knowledge about the Tyrannosaurus-rex that dominated the arena in the late Cretaceous period (about 60 million years ago), very little is known about the ones that ruled the roost during the intermediate period.