The video discusses the Stegosaurus, a dinosaur that lived 150 million years ago, known for its large bony plates and spiked tail. These plates, not part of the skeleton, were used for defense and possibly temperature regulation. The tail spikes, known as a thagomizer, served as a defense mechanism against predators.

How did the Stegosaurus possibly regulate its body temperature?

What is the name given to the spiked tail of the Stegosaurus?