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

In All of Time, 2.5 Billion Tyrannosaurus Rexes Have Roamed Earth, Smart News

2.5 Billion T. Rex May Have Roamed Earth

Earth was home to billions of T-rex over lakhs of generations, suggests new study-Tech News , Firstpost

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

Billions of T. rex likely roamed the Earth, paleontologists report

Palaeontology: More than 2.5 BILLION T. Rexes roamed the Earth over their 2.5 million years

How many T. rexes were there? Billions.

Dinosaurs: Billions of T-Rex once roamed the Earth, scientists say

That's a lot of teeth': 2.5 billion T rex walked the earth, researchers find, Dinosaurs

Billions of T. rexes walked on North America during the Age of the Dinosaurs