Scientists discovered a new dinosaur species, and it could reshape the history of T. rex's evolution

• Scientists identified a new species of Tyrannosaurs that's likely a predecessor to T. Rex.
• The new species shows the dinosaurs got bigger a lot earlier than scientists originally thought.
• It also supports the theory that T. Rex originated in North America, not Asia.

Scientists recently identified a new dinosaur species that could be the closest relative to T. rex ever found.

Named T. mcraeensis, the new dinosaur suggests that Tyrannosaurs grew to enormous sizes millions of years earlier than experts previously thought.