How many T. rexes were there? Billions.

Over approximately 2.5 million years, North America likely hosted 2.5 billion Tyrannosaurus rexes, a minuscule proportion of which have been dug up and studied by paleontologists, according to a UC Berkeley study. (Image by Julius Csotonyi , courtesy

T Rex Dinosaur Facts, Pictures & Info: Meet The Real Tyrannosaurus Rex

How many T. rexes were there? Billions.

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1.7 billion Tyrannosaurus rexes walked the Earth before going extinct, new study estimates

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How many T. rexes were there? Billions.

About 2.5 Billion T. Rex Dinosaurs Stomped Across The Earth's Surface, Study Finds

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Like Godzilla, but actually real': study shows T. rex numbered 2.5 billion - The Japan Times