The Mystery Of The "Dueling" T. Rex and Triceratops May Finally Be Solved

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The 67-million-year-old fossil shows a Tyrannosaurus Rex and Triceratops embroiled in battle (Credit: Friends of the NC Museum of Natural Sciences)

Over the years, researchers have found ample evidence proving that the horned Triceratops and the Tyrannosaurus Rex (T. rex), which roamed western North America in the late Cretaceous period — some 69 million years ago — were mortal enemies. However, finding perfectly-preserved fossils of the prey and predator locked in combat was something they only dreamed of until the 2006 discovery of the "Dueling Dinosaurs" at a private Montana farm by commercial fossil hunters Clayton Phipps and his team.

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