 
        
            Four-winged dinosaur
            Microraptor
            Like other great discoveries in Liaoning over the past two decades,
            Microraptor has transformed scientific understanding and
            pop-culture imagery of what dinosaurs of the Early Cretaceous looked
            like. Whereas we once might have envisioned smooth-skinned reptiles
            plodding along the ground, we now can imagine sprightly, feathered
            creatures gliding from tree to tree. Microraptor's ability to
            glide, and its exact flying form, are still debated, but the notion
            of a flying feathered dinosaur isn't as outlandish as it may have
            seemed a few decades ago.