7 Giant Animals That Are EXTINCT (Part 3)

4. Prionosuchus – The Largest Amphibian in History

Most people think dinosaurs were the biggest creatures ever—but amphibians also had giants.

Prionosuchus:

• Lived around 270 million years ago
• Reached the length of a school bus
• Looked like a crocodile but was actually an amphibian

At that time, crocodiles had not evolved yet. When reptiles became dominant, Prionosuchus could no longer compete and eventually went extinct.