👉 Atopochilodon is a genus of dinosaurs that lived during the Late Cretaceous period, approximately 69-78 million years ago. It was a large theropod dinosaur with a long neck and a short tail. The species is characterized by its elongated head, broad forehead, and distinctive lower jaw. Atopochilodon had a large, powerful jaws that could crush bones and teeth, as well as an extremely efficient digestive system for such a massive animal.