Wrapped lke a mummy. A 66,000,000-year-old Edmontosaurus has been unloaded at Winona State for display in the university’s Science Laboratory Center. A campus geoscience team unearthed the dinosaur over the summer in North Dakota. The excavation site was infested with rattlesnakes, which prompted the team to name her Medusa from Greek mythology. Probably she died in a landslide, her remains being preserved underground all these eons. She’s a big girl: 12 feet long, seven feet wide and 7,000-plus pounds.