Tyrannosaurus rex Is Not One Species, But Three Different Ones

An analysis of over three dozen specimens of Tyrannosaurus rex finds that they exhibit such a remarkable degree of proportional variations that the pattern favors multiple species at least partly separated by time.

T. Rex Had Huge Growth Spurts, But Other Dinos Grew Slow and Steady

The Stegosaurus Was An Ancient Relic To The T. Rex, Nature and Wildlife

Should T. rex be 3 species? New study sparks fierce debate.

Reinventing the Dinosaur

Tyrannosaurus Rex May Have Been 3 Different Dinosaur Species not one says study Tyrant Lizard King Queen Emperor imperator Regina

Small T. rex 'cousins' may actually have been growing teens

Tyrannosaur, Size, Species, & Facts

Tyrannosaurus Rex May Have Been Three Species Instead Of One

Tyrannosaurus rex may actually be three separate species

Controversial paper suggests there are three Tyrannosaurus species

The T. rex may have been three species, but geologists are not happy - The Oxford Scientist

Scientists propose Tyrannosaurus had three species, not just 'rex