Herrerasaurus is an extinct genus of carnivorous theropod dinosaurs from late Triassic Argentina. It is among the earliest dinosaur genera known, having lived roughly 230 million years ago.
In The Land Before Time
A large pack of what are believed by a some fans to be representative of Herrerasaurus are depicted in The Lonely Journey, an episode of The Land Before Time. They are only shown running away from Red Claw and stampeding past Chomper. They were incorrectly portrayed as having the killing claw of dromeosaurids. They appear to be either olive green or blue green in coloration.