It belongs to an early chimaera, not a shark
                                
                                
                                    (Newser) -
                                    The chimaera, or so-called "ghost shark," is an elusive deep-water fish that has fascinated biologists for more than a century. Like its relative the shark, however, it's made of cartilage and thus rarely fossilizes, so little is known about its evolutionary past, reports  Live Science . Now the...