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

What is now considered the largest theropod dinosaur? Some people

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Raptorex shows that T.rex body plan evolved at 100th the size

T. rex dominated the Earth for more than 125,000 generations

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Tyrannosaurus rex Domain Of The Bears

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

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