Elasmosaurs had extremely long necks, small heads and paddle-shaped limbs for swimming Photo: Nobu Tamura Researchers in Alaska have uncovered the bones of a prehistoric marine reptile dating back 70 million years. This is the first time an elasmosaur has ever been unearthed in this state. Its vertebrae were discovered embedded in an eroding cliff. Curvin Metzler (left) and Dr Patrick Druckenmiller on the cliff face where the elasmosaur was discovered Photo: University of Alaska Museum of the North Elasmosaurs had extremely long necks, small heads and paddle-shaped limbs for swimming. • Scientists study remains of massive Dreadnoughtus dinosaur, in pics...