A prehistoric predator to rival the most fearsome giant of them all has just been discovered lurking half-forgotten in a museum collection. No name is associated with Cretaceous terror as much as Tyrannosaurus rex ; now, paleontologists have found a mosasaur that would have been its equal in size and position at the top of its respective food web in the untamed oceans around 80 million years ago. Its name is Tylosaurus rex , or "king of the tylosaurs", and here's the exciting part: Multiple