👉 Penestomidae is a family of extinct mammals that lived during the Mesozoic era, around 64-59 million years ago. The Penestomidae were characterized by a large head and body with two long limbs on each side, allowing them to walk upright. They had a distinctive scapulae (spine-like structures) as well as a small skull that was shaped like a crocodile's snout. Some species of the Penestomidae
