Monolophosaurus details:

Monolophosaurus was a medium-sized Theropod from the Middle Jurassic period. Monolophosaurus measured 7.5 metres in length and weighed 1,565 pounds. Although no evidence have been found of Monolophosaurus hunting in packs, it may have hunted in packs like many other theropods. It was a carnivore, likely predating upon the pterosaurs and smaller dinosaurs of it's region, as well as the small sauropod Bellusaurus.