Aucasaurus garridoi

Aucasaurus is the only known species of the extinct genus Aucasaurus of abelisaurid theropod dinosaur that lived in the late Cretaceous, approximately 75 million years ago, during the Campanian, in what is now South America.
https://www.sciencedirect.com/science/article/abs/pii/S0195667115301439?via%3Dihub