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Raptorex shows that T.rex body plan evolved at 100th the size

Discover Raptorex, the 'king of thieves'—a new species revolutionizing our understanding of tyrannosaur evolution.

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Meet Raptorex, the "king of thieves". It's a new species of dinosaur that looks, for all intents and purposes¸ like the mighty Tyrannosaurus rex, complete with large, powerful skull and tiny, comical forearms. But there's one very important difference - it's 100 times smaller. Unlike the ever-shrinking world of music players and phones, it seems that evolution crafted tyrannosaur technology with much smaller specifications before enlarging the design into the giant predators of the late Cretaceous.

Raptorex is a new species of meat-eating dinosaur, discovered in northwest China by Paul Sereno from the University of Chicago. The specimen is a young adult, but it wouldn't have grown to more than 3 metres in length. It stood about as tall as a human, and wouldn't have weighed much more. And yet Raptorex looked very much like a scaled-down version of its giant future relatives. All the features that made tyrannosaurs so ...

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