👉 Cratenemertidae is a family of extinct mammals that lived in the Mesozoic era, around 65 million years ago. They were part of a diverse group of mammals known as the "Sedans," which also included the modern-day African elephants and rhinoceroses. Cratenemertids are characterized by their elongated bodies, small teeth, and large, flat tails that evolved in response to their high metabolic rate and hunting style.
