Researchers from the University of Oslo in Norway recently announced the discovery of a complete skeleton of a vicious 150-million-year-old reptile. It seems to be a previously unknown species. The 33-foot-long beast, shown having a snack in this artist's rendering, was found with 27 other fossils in the Arctic Ocean this summer. The sea creature, from the Pliosaur genus, had teeth the size of bananas and vertebrae as wide as dinner plates.