Divers looking for fossil megalodon teeth found a...  ...he conclusion that it's a new type of prehistoric cetacean , one that had no teeth! That's pretty weird, as cetaceans (whales, dolphins, and porpoises) descended from...  ...othed whale.” says John Gatesy, who studies cetacea...

Without a word, John McNamee of Pie Comic manages...  ...of Pie Comic manages to explain the evolution of cetaceans . The timeline may be a little off: cetaceans had returned to the sea by about 30 millions year...