 Tapejarids are also characterized by their large "nasoantorbital fenestra", the main opening in the skull in front of the eyes, which spans at least half the length of the entire skull in this family.Their eye sockets were small and pear-shaped.Studies of tapejarid brain cases show that they had extremely good vision, more so than in other pterosaur groups, and probably relied nearly exclusively on vision when hunting or interacting with other members of their species.