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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
New Study Reveals About 2.5 Billion T-Rex Walked The Earth Over A Couple Million Years! - Science
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Billions' of Tyrannosaurus rexes said to have walked the Earth in all of history - National
Absolute abundance and preservation rate of Tyrannosaurus rex
Billions of T.rex dinosaurs roamed North America, study shows
Researchers: 2.5 Billion Tyrannosaurus Rexes Walked the Earth
Billions' of Tyrannosaurus rexes said to have walked the Earth in all of history - National
Billions of T.rex dinosaurs roamed North America, study shows
Like Godzilla, but actually real': study shows T. rex numbered 2.5 billion