How many T. rexes were there? Billions.
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 with his students to find an answer.
Tyrannosaurus rex Science Museum of Minnesota
2.5 billion T. rex roamed Earth, but not all at once, study finds
How many T. rexes were there? Billions., rex
Dinosaurs: Billions of T-Rex once roamed the Earth, scientists say
Two-and-a-half billion T-Rex have roamed the earth - Scimex
Why is T. rex everyone's favorite dinosaur? Aren't there like a billion cooler dinosaurs? - Quora
About 2.5 billion T. Rex roamed Earth but not at once
1.7 billion Tyrannosaurus rexes walked the Earth before going extinct, new study estimates
Number of T-rexes that lived in North America could have been in billions
