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

Analysis of what's known about the dinosaur leads to conclusion there were 2.5 billion over time. How many Tyrannosaurus rexes roamed North America during the Cretaceous period? That's a question Charles Marshall pestered his paleontologist colleagues with for years until he finally teamed up

Pictures and Profiles of 80 Carnivorous Dinosaurs

Pictures and Profiles of 80 Carnivorous Dinosaurs

Mesa Now

Palaeontology: More than 2.5 BILLION T. Rexes roamed the Earth

The Cretaceous Period (146-65 million years ago) - The Australian

A total of some 2.5 billion T. rex roamed the Earth, study finds

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

Forest Explore the Cretaceous world - art post - Imgur

Dinosaur – Prehistoric Otter