Quilmesaurus

Quilmesaurus is a genus of carnivorous theropoddinosaur from the Upper Cretaceous (Campanian to Maastrichtianstages) Allen Formation of Argentina. It was a member of Abelisauridae, closely related to genera such as Carnotaurus. The only known remains of this genus are leg bones which share certain similarities to a variety of abelisaurids. However, these bones lack unique features, which may render Quilmesaurus a nomen vanum (more commonly known as a nomen dubium, or "dubious name").