A giant creature with a "toilet seat-shaped" head and huge fangs was a top predator 40 million years before the first dinosaurs evolved, new research reveals. The skull alone of Gaiasia jennyae was ...

“Gaiasia jennyae was considerably larger than a person, and it probably hung out near the bottom of swamps and lakes," an expert said Marina Watts is a Digital Writer, Music at PEOPLE. She has been ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A massive, fanged ...

(CNN) — A massive, fanged creature with a head shaped like a toilet seat lurked in swamps near the edge of the world 280 million years ago, long before the first dinosaurs appeared, new research has ...