Ptyctodontidae

Ptyctodontidae is a family of extinct mammals that lived during the Paleogene period, approximately 66 to 23 million years ago. They are known for their distinctive, flat, and broad skulls, which are characterized by a large, flat, and broad palate. The family is divided into two subfamilies: Ptyctodontinae and Purgatoriodontinae. Ptyctodontinae includes the genera Ptyctodus and Purgatoriodus, while Purgatoriodontinae includes the genus Purgatoriodus. Ptyctodontidae are believed to have been herbivorous, with their broad skulls and teeth adapted for grinding plant material. They are thought to have lived in a variety of habitats, including forests and grasslands. The family is known from fossils found in North America, Europe, and Asia. Ptyctodontidae went extinct at the end of the Eocene epoch, around 34 million years ago.