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.
Sue the T. rex has taken over Denver Museum of Nature & Science, and it's a must-see
Newly-Discovered Tyrannosaur Species Fills Gap in Lineage Leading to Tyrannosaurus rex
Tyrannosaurus Rex In A Nutshell
Scientists propose Tyrannosaurus had three species, not just 'rex
Scientists say they've found T. rex's early ancestor in northeast Montana, Environment
Is T. rex really three different species? There's debate.
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Bones show T. rex may have hunted in a pack
T. Rex Discoveries Reveal How the Dinosaurs Hunted, Walked, and Grew
Reaper of death,' newfound cousin of T. rex, discovered in Canada
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