👉 Pyramidon, also known as a pyriform or pyramidal, is an extinct genus of mammals that lived during the Late Cretaceous period (about 79-68 million years ago). These animals were characterized by their large, elongated heads and long forelimbs. The Pyramidids are thought to have been small to medium-sized herbivores, with a diet consisting primarily of grasses and other plants. They lived in the forests of Europe and Asia