An interesting conversation with a colleague at work who is a developmental biologist. We were talking about scientific accuracy in films and fiction - guess I started it. He noticed that dragons have evolved over recent years to become more realistic. Early depictions of dragons have been four legged animals with a pair of wings. More recent depictions have had the wings evolved from the fore-limbs. This is much more in keeping with how winged animals have evolved. The fictional evolution of dragons has brought them much closer to a plausible form.