This is the most amazing footprint fossil that have been been found so far. Dr Phil Manning, of Manchester University, believes the 29 inch long mark was made by the flesh-eating giant as it stomped over a prehistoric floodplain more than 65 million years ago.He found the print last year during a field trip to the Hell Creek rock formation in Montana. Two other partial dinosaur footprints lie close by.

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Although other scientists have claimed to have unearthed T. rex prints before, their claims have been impossible to prove. Actually, in the early 1990s, scientists announced they had found a T. rex print in new Mexico. However, the researchers found no bones nearby and the identity of the prints has been disputed.

The prints were formed when the weight of the dinosaur squeezed together clay below the muddy surface of the floodplain. The resulting print shape was so compacted, it became tougher than the surrounding stone.