New Apex Predator Unearthed: Mosasaur Reclassified as Tylosaurus rex
A Perot Museum mosasaur specimen, previously identified as Tylosaurus proriger, has been reclassified as a new species, Tylosaurus rex, making it a 13.2-meter-long apex predator with a powerful jaw and serrated teeth; researchers also reassigned 12 other large mosasaurs to T. rex, prompting a rethink of mosasaur evolution and the diversity of Late Cretaceous oceans.