Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

Meet Gaiasia jennyae, the swamp creature with a toilet seat-shaped head. It lived 40 million years before the first dinosaurs, and it was the top predator in its ecosystem. Forty million years before ...

For some, it's the last real taste of innocence, and the first real taste of life.

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 ...