Scientists: Dinosaurs fell victim to gut worms

WASHINGTON - They may have ruled the land and the seas 75 million years ago but even dinosaurs fell prey to the lowest of the low — gut worms, scientists reported on Monday.

An unusually well-preserved fossil of a duck-billed dinosaur dug up in Montana has revealed great detail of the animal's insides, including what appear to be tiny burrows that would have been made by worms, the team at the University of Colorado at Boulder found.

They found more than 200 suspected parasite burrows that most likely were made by tiny worms similar to annelids and nematodes that infest animals today, said assistant geology professor Karen Chin.