Euoplocephalus

Euoplocephalus (Well Armored Head) was an Ankylosaurid Dinosaur from the Mid-Late Cretaceous of North America. It was very similar in many aspects to its close relative, Ankylosaurus, which also appears in the Jurassic Park universe. This dinosaur weighed 2.2 tons and had a width of 2m and was around 6m long. Euoplocephalus was equipped with fused bone plates on it's back that acted as body armor as well as a pair of horns that protruded from the back of the neck, possibly as defence against being grabbed by the neck. For defence Euoplocephalus was armed with a foot wide tail club that could be swung like a medieval flail and had the ability to break bone. In addition Euoplocephalus also supported a pair of armored eyelids. Euoplocephalus was discovered in 1902 by Lawrence Morris Lamb in the badlands of Alberta. There are two species within the genus; Euoplocephalus tutus and  Euoplocephalus acutosquameus.

In Jurassic Park
Euoplocephalus was listed as being in the park in the novel, but not seen in the movie. It also makes appearance in the PSX/SEGA genesis game The Lost World: Jurassic Park (video game) as the final boss in the series of the Velociraptor levels. The Euoplocephalus has three attacks, a charging attack, a lunging gore and a tail swipe. In addition jumping onto the Euoplocephalus will cause you damage due to the horns on the back. To defeat the Euoplocephalus you need to pounce on it's head and then lift the animal on to it's side were you can then attack the dinosaur's belly.