A Secret Sea Monster Fossil Was Hidden in a Museum for 30 Years!

Paleontologists [fossil scientists] just looked closely at some old bones found in Japan and realized they belong to a gigantic, ancient ocean predator called a mosasaur! Some of these jaw bones look so strange and unique that they might belong to a completely new species that nobody has ever seen before. Imagine what other prehistoric monsters are still waiting to be discovered in museum drawers!