New fossil evidence makes clear that not all dinosaurs suffered extinction 65 million years ago. It’s a revelation that has profoundly changed the way we perceive the natural world and has given us a new understanding about the origins of birds. We now believe that all living birds are descendants of certain predatory dinosaurs, the theropods. Indeed, many theropods are preserved with feathers as part of their skin. The transition from small, feathered dinosaur to primitive flying bird is now accepted as an anatomically seamless evolutionary event.