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

Why T. rex has tiny arms University of California

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

Study: 2.5 billion T. rex roamed Earth, but not all at once

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

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

How many T. rexes were there? Billions., rex

2.5 Billion T. Rex May Have Roamed Earth

Two and a half billion T. rex dinosaurs once lived, study finds

Study: 2.5 billion T. rex roamed Earth, but not all at once - Hawaii Tribune-Herald

Absolute abundance and preservation rate of Tyrannosaurus rex

An estimated 2.5 billion Tyrannosaurus rexes lived and died on Earth •