Utahraptor was found about the same time Jurassic Park was released.  It is actually a much better fit for the movie raptor than the actual turkey sized Velociraptor.  This was a large animal around 21 feet long the largest known official dromaeosaurid.  Oddly raptors get smaller over time and by the Late Cretaceous most are relatively small animals. Fossils have been found associated with the sauropod Astrodon  and the armored dinosaur Gastonia They may have been prey although Iguanodon seems like an easier meal.

Utahraptor coexisted with the coyote-sized dromaeosaur Yurgovuchia doellingi near what’s now Arches National Park.

Gastonia was the largest and best known polacanthine ankylosaurid closely related to Polacanthus and Hoplitosaurus.

Sauropelta had bands of large and small shields across its back, and may have also have had spines sticking out from its sides. It was one of the largest nodosaurids at 26 feet long weighing 2 -3 tones making it one of the larger nodosaurids.

Sauropelta was more lightly armoured than latter ankylosaurids and nodosaurids. The spikes were made up of thin, compact bone with less reinforcing collagen than in the heavily armoured nodosaurids. The relative fragility of the armour suggests display as much as defense. The skull was long and narrow with a flate roof and tapering snoute.