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Last Updated: Tuesday July 20 2010 11:43 GMT

Scientists discover dinosaurs dig out food

Dinosaur from Doctor Who

So millions of years ago, who would win in a fight - a mammal or a dinosaur?

Scientists have been wondering how the two creatures got along for years - but new evidence has thrown some light on the matter.

A team in Utah, USA, has found marks that show some dinosaurs hunted small mammals by digging them out.

It's an important discovery as before there was only evidence of mammals snacking on a baby dinosaur - so this evens it up!