A newly identified mid-sized dinosaur from Mongolia dubbed the "Dragon Prince" has been identified as a pivotal forerunner of Tyrannosaurus rex in an illuminating discovery that has helped clarify the famous predator's complicated family history.

Scientists from the University of Calgary have discovered a new mid-sized dinosaur species named Khankhuuluu mongoliensis, which appears to be the 'missing link' in the evolution of tyrannosaurs, according to CBS News.

Scientists announced the discovery of a new species of early tyrannosaur in a museum vault in Mongolia, an ancestor to notorious apex predators like T. rex.