Sordes pilosus

Some fossils show that Sordes pilosus kept warm with a thick coat of fibers similar to fur—hence its name, "hairy devil." The discovery of this species proved that pterosaurs had a fuzzy coat and were probably warm-blooded. Sordes pilosus lived on the shore of a lake, where it likely dined on fish and other small prey. Its broad wings stretched from its wing bones to its ankles, and another flap of skin connected its legs, which it may have pumped during flight.