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29 February 2012 Last updated at 08:41

T. rex had the most powerful bite

Tyrannosaurus rex had the most powerful bite of any creature that ever walked the Earth, according to scientists.

Experts from the University of Liverpool have used a life size T. rex skull to help them digitally recreate the dinosaur's powerful jaws in 3D.

With its razor sharp teeth and huge mouth, the Tyrannosaurus really was the ultimate prehistoric predator.

The team said that if you were bitten, it would be like having the weight of a medium sized elephant sitting on you.

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