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New tiny tyrannosaur helps show how T. rex got big

New tiny tyrannosaur helps show how T. rex got big

National Geographic - Michael Greshko

The gangly predator fills in a crucial gap in our understanding of how tyrannosaurs came to dominate during the Cretaceous. Tyrannosaurus rex might have been the “tyrant lizard king,” but before the mighty T. rex stomped across what is now North America, it ancestors weren't exactly living like …

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