Scientists have discovered a new species of dinosaur called Natovenator polydontus. It had a body similar to that of diving birds and is believed to have been the size of a goose. The dinosaur is believed to have existed about 72 million years ago, during the Cretaceous Period. According to scientists, Natovenator possessed streamlined ribs, a long neck similar to that of a goose and a mouth with 100 tiny teeth. The dinosaur used its forearms to move in water.