Callovosaurus

Callovosaurus was a small, primitive Iguanodontid Dinosaur that lived in North America and Europe during the Late Jurassic period, around 145 million years ago.

In Jurassic Park
Callovosaurus' name accidentaly replaced that of Microceratops' in some editions of the Jurassic Park novel. So, Callovosaurus does not canonically appear in the Jurassic Park universe.