👉 Polymerodon is a genus of extinct herbivorous dinosaurs that lived during the Late Cretaceous period, around 68 and 64 million years ago. They were characterized by their large size (up to 10 meters long), powerful jaws, and elongated bodies. The most notable feature of Polymerodon was its unique skeletal structure, with a flattened skull, bulbous ears, and a relatively short tail compared to other dinosaurs in the same period.