Nyctosaurus

Ok so the crest isn't on the right proportions, since it should be bigger. But oh well. This pterosaur (at least this species) had a huge sail like crest that could possibly be held together by a membrane. This pterosaur also lost its hand claws, which is strange. It's considered to be the ultimate pterosaur evolution. Any more comments you wanna make?

Finally I got rid of those obnoxious lines on top of the drawing.