Jurassic Park Wiki

Gastonia is a genus of herbivorous ankylosaurian dinosaur from the Early Cretaceous of North America, around 125 million years ago. It is often considered a nodosaurid closely related to Polacanthus. Gastonia has a sacral shield and large shoulder spikes.

Wikipedia has a more detailed and comprehensive article on Gastonia

Jurassic Park

Gastonia has never appeared or mentioned in any Jurassic Park films or books, it has however been featured in both the Dinosaur Field Guide as well as the Jurassic World Dinosaur Field Guide.