sentences:  As a pterosaur, "Istiodactylus" would have been covered in hair-like pycnofibres, and had extensive wing-membranes, which were distended by a long wing-finger.The skull of "Istiodactylus" was relatively short and broad compared to most other pterosaurs, and it had a short, low snout-region in front of the nostrils.Much of the skull was occupied by very large naso-antorbital fenestrae (openings which combine the antorbital fenestra and the bony nostril).