👉 Pediolagus is a genus of extinct mammals that lived during the Late Cretaceous period, approximately 65 million years ago. They were part of a group known as the pterosaurs, and their fossils have been discovered in North America, Asia, and Europe. Pediolagus are known for their large, elongated skulls with triangular heads, long forelimbs, and short hindlimbs, which allowed them to swim efficiently in water.