Ankylosaurus

Covered in armoured plates and sharp spikes, weighing more than an elephant, and swinging a deadly tail club capable of smashing through bone, Ankylosaurus is an Ultimate Dinosaur. But one we know very little about. Why have so few of their skeletons been found? Could they really have used their tails to take down an attacking Tyrannosaurus rex? Find out about this indestructible dinosaur and 7 mo...