T. rex’s Ancestors Used an Ancient Landbridge To Walk From Asia to North America

T. rex’s Ancestors Used an Ancient Landbridge To Walk From Asia to North America

T. rex evolved in North America from Asian ancestors. Climate shifts and extinction events helped tyrannosaurids and megaraptors grow in size and spread globally, with different adaptations to their environments. Tyrannosaurus rex evolved in North America, but a new study led by UCL researchers suggests its direct ancestor originated in Asia. Over 70 million years [...]