👉 Aploidea is a class of extinct vertebrates that lived during the Late Cretaceous period, approximately 68-75 million years ago (mya). These birds are known for their distinctive apothecial markings and were part of the Ornithischia family. The term "aplastodont" refers to the appearance of these apothecial marks on their bodies, often resembling the teeth or jaws of modern birds.
