This video breaks down how mosasaurus rose to dominance and reshaped marine ecosystems during the late Cretaceous. Its size, mobility, and hunting mechanics allowed it to outperform nearly every ...

There's a giant, vicious lizard monster lurking in the ocean. It's more massive than any creature that exists today. Say hello to the modern-day Mosasaurus. This creature went extinct 66 million years ...

Othniel Marsh and Edward Cope each discovered troves of dinosaur fossils in the 19th century—but grew obsessed with bringing each other down in the Bone Wars. Men unearth the giant bones of a mammoth ...