Camptosaurus

Camptosaurus was a ancestor of the iguanodontids. It was likely an important prey item of Allosaurus. It lived during in the Late Jurassic Period.

Jurassic Park Novel
In the Jurassic Park novel, Tim Murphy's father was looking at a fossil skeleton of Camptosaurus at "the Natural History Museum" (probably the American Museum of Natural History) and remarked that it was quite big. Tim remarked that it was only medium-sized. His father then went on to guess when the dinosaur was from and when that time period was in the geological scale (incorrectly), with Tim correcting him all the way. Confused at this, his father concluded, "Well, it looks pretty damn big to me," and then they walked off to another exhibit. It is interesting to note that Tim informs his father that it is from the Cretaceous, when in real life it was a Jurassic dinosaur. This was the geological era his father first guessed it was from, making him (rather ironically) correct in guessing its age.

Video games

 * It is No.080 of the Herbivore Twos that can be created in Jurassic Park III: Park Builder