The world’s largest T-Rex, residing in Regina, may have relatives that are 70 percent larger

For many years now, Saskatchewan has been the proud home of the largest Tyrannosaurus Rex in the world.

This huge animal, nicknamed “Scotty”, has been roaming the earth for about 66 million years. It weighs an estimated 19,555 pounds, the equivalent of four pickup trucks, and is about 42 feet long.

Scotty took more than two decades to fully excavate and analyze and has been named the largest member of its kind ever found, as well as the longest-lived T. rex, according to the fossil record.

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However, a new study suggests that Scotty may not hold those titles for much longer.

Paleontologists from the Canadian Museum of Nature in Ottawa have estimated that the largest Tyrannosaurus rex may have actually weighed about 33,000 pounds, making it heavier than the average school bus, which weighs about 24,000 pounds.

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The researchers were trying to answer the question: how big could a Tyrannosaurus rex actually get?


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Scientists are studying the world’s largest T-Rex to gain insight into dinosaurs and evolution


Scientists first examined the fossil record, which shows that approximately 2.5 billion T. rex once roamed the earth. However, only 32 adult fossils have been found, giving scientists a limited amount of data for research.

Co-authors David Hone and Jordan Mallon created two models of what different body types of T. rexes might look like based on sexual dimorphism.

With this data, the scientists were able to model the T. rex’s growth curve over its lifetime — and estimate how big an adult can grow.

If proven true in the future, this would make Scotty about 70 percent smaller than he could be the largest of his kind.

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The scientists presented their findings November 5 at the Society for Vertebrate Paleontology’s annual conference in Toronto.

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For those at the Royal Saskatchewan Museum, which Scotty calls home, the find is intriguing, but for now it holds the title of largest T-rex ever discovered.

“It’s one of those weird situations where you don’t really count on a specimen,” said Ryan McKellar, curator of paleontology at the Royal Saskatchewan Museum. “It’s more than just a hypothetical idea.

“There was talk at a conference a few weeks ago where people suggested that if the T. rex continues to grow and grow, they will probably reach larger sizes than Scotty. But right now, Scotty is still the largest known specimen. So it comes down to a bigger difference. between the hypothetical growth curve and what we actually have in fossil material.”

And though Scotty is the eldest at the moment, McKellar is excited about the future and what might be revealed.

“Part of what makes the hunt for additional specimens down the road more exciting is that there could be larger, better-preserved material in Saskatchewan and the northern US,” he said.

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A new species of dinosaur has been discovered similar to T-Rex, but it is 20 million years older


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