Majungasaurus

Majungasaurs is an abelisaurid dinosaur from the late cretaceous[75 - 65]that lived in the island of madagascar.

In Dinosaur Revolution

It appeared ithe third episode where a rahonavis herd the calls of an approaching majungasaurus as it almost stopped it but 

the quick little raptor managed to escape. As the majungasaurs attacked the rapetosaurus

the rahonavis saw the battle and it's babies  came and saw the rahonavis and chased it into a tree but later were

eaten by giant beelzobufo frogs. At the end the end the female majungasaurus has killed the rapetosaurus

and ate it. 

Appearence

It was a medium sized carnivore that was smaller than t-rex but bigger then velociraptor.

With a short snout with a horn on top of it and small arms and weighed about 1 tonne.