Summary:
- This article describes the discovery of a new species of dinosaur, Meraxes gigas, which lived in what is now Argentina during the Late Cretaceous period, approximately 90 million years ago.
- Meraxes gigas was a large carnivorous theropod dinosaur, closely related to the famous Tyrannosaurus rex, but with some unique features such as a large, bony crest on its head.
- The discovery of this new dinosaur species provides important insights into the evolution and diversity of the Cretaceous ecosystem in South America, and helps to fill in gaps in our understanding of the dinosaur family tree.