Ankylosaurus magniventris
Ankylosaurus was the ultimate defensive dinosaur. Its entire back and sides were covered in thick bony armor and osteoderms. The most famous weapon was its massive tail club — fused vertebrae and armor plates that could swing with bone-crushing force. Despite its tank-like build, it was a selective feeder on soft vegetation and surprisingly agile when threatened.
It lived right up until the asteroid impact alongside Triceratops and T. rex. Its armor was so effective that even the most powerful predators thought twice before attacking a healthy adult.
A dramatic 8-second scene of an Ankylosaurus swinging its massive tail club in defense against an approaching predator.
Floodplains of western North America. Shared its final days with Triceratops and Tyrannosaurus in the Hell Creek Formation.