Tyrannosaurus rex was a huge land predator during the twilight of the age of dinosaurs. But it was not the only T. rex that terrorized the Cretaceous Period. There also was a marine reptile named Tylosaurus rex – the T. rex of the sea – that rivaled its land counterpart in size and ferocity.
Scientists said they have identified Tylosaurus rex as a distinct species after a wide-ranging examination of
