Nation This crocodile-like predator roamed Iowa’s waters more than 300 million years ago November 30, 2022Orlando Mayorquin, USA TODAYComments Off on This crocodile-like predator roamed Iowa’s waters more than 300 million years ago The Whatcheeria was an aquatic predator that lived millions of years ago in current-day Iowa. It was named after the town of What Cheer.