Nyctosaurus gracilis

Nyctosaurus gracilis, a bizarre pterosaur with a huge crest in the head. I've added an hypothethical sail to the crest, but I keep another version without the sail (it's in my scraps, if you want check it out).
It is based a lot in John Conway's Nycto skeleton studies, which have been extremely useful to fit proportions and all.
Also, thanks to Paleofreak for help me to decide for the ankle junction of the wing membrane.
Btw, doing this I have noticed that it's possible to have a quite narrow wing (almost all marine birds today presents narrow wings) and still have the wing attatched to the ankle (as fossils seems to show)