Here’s an impression (from National Geographic News) of what the recently discovered Darwinopterus may have looked like:
As a fossil, this one’s particularly interesting because it helps fill in one of the gaps that are so beloved of those that would deny the theory of evolution. How so? Well, according to reports (such as this from the BBC), Darwinopterus has features akin to it’s more primitive ancestors and also to those of later, more evolved, pterosaurs. It’s a sort of half-way-house, if you will, that shows evolution in action.