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

How Big Was the T. Rex Population? Study Estimates That There Were 1.7 Billion of Them Lurking Over Earth Prior to Their Extinction

How many T. rex were there? Billions, it turns out

Paleontologists Stunning Conclusion: 2.5 Billion T. Rexes Roamed North America Over the Cretaceous Period

New Study Reveals About 2.5 Billion T-Rex Walked The Earth Over A Couple Million Years! - Science

How many T. rex were there? Billions, it turns out

New Study Reveals Surprising Tyrannosaurus Rex Population and Lifespan

New dinosaur was more dangerous than Tyrannosaurus Rex - Deseret News

There were Billions of T-Rex terrorizing Earth

Womple Studios 6 Biggest Dino Finds of the Last Decade

Tyrannosaurs may have hunted together in packs like wolves

Researchers: 2.5 Billion Tyrannosaurus Rexes Walked the Earth

Number of T-rexes that lived in North America could have been in billions

1.7 Billion T. Rexes Lived on Earth. Where Are All the Bones?

How many 'Tyrannosaurus rex' walked the Earth?