Gastonia (dinosaur)

Gastonia is an armoured dinosaur from the Lower Cretaceous of North America. It lived about 139 to 125 million years ago.
It was a nodosaurid, closely related to "Polacanthus". "Gastonia" has a sacral shield and large shoulder spikes.
Several examples of this genus of herbivorous ankylosaur were found in Utah in the Cedar Mountain Formation.