Xenotarsosaurus is a meat-eating theropod. It lived during the late Cretaceous time period in Chubut, Argentina. It is 22 feet tall, and it has fused ankle bones. Its name means 'strange tarsus lizard'. It also had a large backbone with a knobbly back. There are also two horns above the eyes. It had small arms, like the well known T-Rex. Its closest relatives were Carnotaurus and Abelisaurus.