A new member of the megaraptoran dinosaur family has been discovered by a team of paleontologists from Argentina and the United States. The new dinosaur species lived in what is now Patagonia, Argentina, during the latest part of the Cretaceous period, between 70 and 67 million years ago. Dubbed Joaquinraptor casali, the ancient predator was a top predator in the region. It belonged to Megaraptora, a group of large-clawed carnivorous theropod dinosaurs known from Cretaceous deposits in Asia, Australia, and especially South America. Latest Cretaceous megaraptorid theropod dinosaur sheds light on megaraptoran evolution and palaeobiology.