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.

Tyrannosaurs may have hunted together in packs like wolves

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

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

Billions of T. rex existed on Earth – DW – 04/16/2021

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

What are some cool facts about the t-Rex : r/Dinosaurs

Are scientists trying to bring back the T-Rex? - Quora

Number of T-rexes that lived in North America could have been in billions

Tyrannosaurus rex, Jurassic Park Wiki

T. Rex Wasn't All Brawn. It Had a Brain Comparable to a Primate

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

T Rex Dinosaur Facts, Pictures & Info: Meet The Real Tyrannosaurus Rex

The Family Feud Behind a $32 Million T. Rex Named Stan - WSJ

Scientists conclude New Mexico fossil is new Tyrannosaurus species