Tyrannosaurus rex may have been three separate species, say scientists

Researchers have controversially argued there is enough variation in samples to point towards three species of Tyrannosaur, not one.

Two and a half billion T. rex dinosaurs once lived, study finds

Newly-Discovered Tyrannosaur Species Fills Gap in Lineage Leading to Tyrannosaurus rex

How to tell if a T. rex is expecting

Tyrannosaurus, Dinopedia

Tyrannosaurus Rex May Have Been More Than One Species, Study Suggests - CNET

Tyrannosaurus - Wikipedia

T-rex to End All T-rexes Discovered in Saskatchewan

Giant dinosaur that predates Tyrannosaurus rex unveiled in Utah

Tyrannosaurus rex may have been three separate species, say scientists

Tyrannosaurus rex may have been three species, scientists claim

T. Rex might actually be three separate species: study

Tyrannosaurus rex and velociraptor may have had lips covering their teeth, new study finds

Dinosaur Bone Study Reveals That Not All Giants Grew Alike

A newfound dinosaur had tiny arms before T. rex made them cool