Megalosaurus

Megalosaurus ("big lizard") was the first non-avian dinosaur even named. It was commonly depicted fighting with Iguanodon, who was also one of the first; however, we now know that Megalosaurus and Iguanodon didn't live together.

Iberomesornis's Idea
Megalosaurus was the apex predator of its enviroment; probably, it was solitary, and would fight for territory. Megalosaurus would eat big live prey, preferably cows and goats. Eagles and similar birds of prey would be live prey representing pterosaurs that lived along the dinosaur.