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.

T. rex may have had lips like a modern lizard's

Splitting T. Rex Into 3 Species Becomes a Dinosaur Royal Rumble - The New York Times

Tyrannosaurus rex may have been three separate species, say scientists, rex

T-Rex Should be Divided into Three Species, Say These Researchers - News18

T. rex grew beefier than museum fossils suggest

The Dino That Looked T. Rex-y Long Before T. Rex

Newly discovered, primitive cousins of T. rex shed light on the end of the age of dinosaurs in Africa

What a Tyrannosaurus Rex Skull Tells Us About Its Intelligence

What we thought we knew about T. rex was wrong, researchers say in new study

Steve Brusatte, paleontologist: 'The most terrifying thing about the tyrannosaurus was not its jaws but its intelligence', Culture

Tyrannosaurus imperator: Researchers say 'Tyrannosaurus' may have been three species instead of just one, Science

Reaper of death,' newfound cousin of T. rex, discovered in Canada