Tyrannosaurus rex may have been three separate species, say scientists

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Researchers have controversially argued there is enough variation in samples to point towards three species of Tyrannosaur, not one.
Tyrannosaurus rex may have been three separate species, say scientists
Sue the T. rex has taken over Denver Museum of Nature & Science, and it's a must-see
Tyrannosaurus rex may have been three separate species, say scientists
Newly-Discovered Tyrannosaur Species Fills Gap in Lineage Leading to Tyrannosaurus rex
Tyrannosaurus rex may have been three separate species, say scientists
Tyrannosaurus Rex In A Nutshell
Tyrannosaurus rex may have been three separate species, say scientists
Scientists propose Tyrannosaurus had three species, not just 'rex
Tyrannosaurus rex may have been three separate species, say scientists
Scientists say they've found T. rex's early ancestor in northeast Montana, Environment
Tyrannosaurus rex may have been three separate species, say scientists
Is T. rex really three different species? There's debate.
Tyrannosaurus rex may have been three separate species, say scientists
Sue (dinosaur) - Wikipedia
Tyrannosaurus rex may have been three separate species, say scientists
New Tyrannosaurus: The T. Rex is the King of Lizards, but it's new cousin is the Reaper of Death - CBS News
Tyrannosaurus rex may have been three separate species, say scientists
Bones show T. rex may have hunted in a pack
Tyrannosaurus rex may have been three separate species, say scientists
T. Rex Discoveries Reveal How the Dinosaurs Hunted, Walked, and Grew
Tyrannosaurus rex may have been three separate species, say scientists
Reaper of death,' newfound cousin of T. rex, discovered in Canada
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