Rugops is a large meat eating dinosaur that was featured largely in Monsters ressurected episode 1.
Rugops was first shown hunting and eating a Paralititan baby. Suddenly a Spinosaurus kills it. from then on Rugops was shown being killed by Spinosaurus almost everywhere. It was not main again until the end when a pack of rugops attacked a Spinosaurus and killed it by breaking it`s sail.
Rugops was said to be 30 feet long in MR and Spinosaurus at 60 feet. That ment that 2 Rugops`s would have equaled the length of Spinosaurus.However The Rugops`s were shown to be a 1/4 of the length of Spinosaurus. That meant that the Rugop`s were probably juveniles.