How many T. rexes were there? Billions.
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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
Study: 2.5 billion T. rex roamed Earth, but not all at once
Total T. Rex Population During Species' Existence Was 2.5 Billion
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How many T. rexes were there? Billions.
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Study: 2.5 billion T. rex roamed Earth, but not all at once
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How many T. rex ever existed? Calculation of dinosaur's abundance offers an answer
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