Ever wonder where our worst nightmares come from?

For the ancient Greeks, it may have been the fossils of giant prehistoric animals.

The tusk, several teeth, and some bones of a Deinotherium giganteum, which, loosely translated means really huge terrible beast, have been found on the Greek island Crete. A distant relative to today's elephants, the giant mammal stood 15 feet (4.6 meters) tall at the shoulder, and had tusks that were 4.5 feet (1.3 meters) long. It was one of the largest mammals ever to walk the face of the Earth.

"This is the first finding in Crete and the south Aegean in general," said Charalampos Fassoulas, a geologist with the University of Crete's Natural History Museum. "It is also the first