Jag, you are aware, I assume, that wings (bat, pterosaurs, or bird) are supported by a framework of finger bones, right? The bone structure of wings are adaptations of finger bones. Wings are arms (forelimbs) that are specialized for flight. Some, even today, still bear claws. In some birds, those claws are only present when immature, and disappear later, after they feather out and begin flying.
Again you show foolish faith in what cannot be known. What good was half a wing for any of the creatures you mention. They couldn't fly and they couldn't run. So what would happen to them? They wouldn't make it past the first day before being eaten by a complete predator.
