Paleontology tourists dig up ancient sea floor in Pembina Gorge

Professional paleontologists from the N.D. Geological Survey are leading groups of amateurs on a week-long fossil dig in the Pembina Gorge in the state's northeast corner. It's one of four digs open to the public throughout the state. On Saturday, the first day, the amateurs found the bones of a mosasaur, a large marine reptile.