Researchers have controversially argued there is enough variation in samples to point towards three species of Tyrannosaur, not one.
Researchers now have an estimate for just how many T. rex once roamed Earth
We have 3 Tyrannosaurus es Now! : r/Naturewasmetal
Newly discovered dino may be tyrannosaur 'missing link
Nanotyrannus May Have Been Scarier Than T. Rex, And Here's Why
Tyrannosaurus rex may have been three separate species, say scientists
Tyrannosaurus rex may have been three species, scientists say, Dinosaurs
Controversial idea that T. rex was three species comes under fire
Tyrannosaurus rex may actually be three separate species
New dinosaur was more dangerous than Tyrannosaurus Rex - Deseret News
How Smart Were Dinosaurs? New Studies Fuel the Debate
