University of Colorado at Boulder researchers have discovered what appears to be the first evidence of parasites in the gut contents of a dinosaur, indicating even the giants that roamed Earth 75 million years ago were beset by stomach worms. The evidence was found in an exceptionally well preserved duck-billed dinosaur dug from the rocks of the Judith River Formation near Malta, Mont. Assistant Professor Karen Chin of CU-Boulder's geological sciences department and former graduate student Justin Tweet identified more than 200 suspected parasite burrows in 17 samples of gut material from the dinosaur that most likely were made by...