👉 Mastopoda is a group of extinct mammalian groups that lived during the Late Cretaceous period, approximately 68 to 75 million years ago. These creatures were part of a larger lineage called Mesozoic mammals and are known for their distinctive cranial features, including a large snout (called a "mastopod") and a small brain. They were characterized by a lack of specialized teeth that allowed them to survive in the harsher environments of the Cret
