Ankylosaurs

Looking like reptilian armadillos, or prehistoric tanks, Ankylosaurs were heavily armoured dinosaurs with protective plates over their head and shoulders. Some species took their protection to extremes and even had armoured eyelids. Spikes and protrusions were common in a bid to deter predators from taking a bite. Some ankylosaurs had a large, heavy club at the end of the tail for wielding as a weapon or, as has also been suggested, for sexual selection. To carry the weight of all this heavy armour, these plant-eating dinosaurs had very short, stout legs.