Pterosaur

These Mole-Like Critters Lived Under the Feet of Dinosaurs

These Mole-Like Critters Lived Under the Feet of Dinosaurs

Before an asteroid completely changed the course of Earth’s evolutionary trajectory, the world was filled with scaled and feathered dinosaurs, web-winged pterosaurs, and, as a new study describes, precursors to modern mammals that eked out existence in burrows they dug into the Cretaceous soil.