 Additional low, rough lateral ridges (similar to those of "Rauisuchus") run along the upper edge of the snout from the nasal to the lacrimal and prefrontal.A palpebral bone is present above the orbit in the largest specimens but is absent in other skulls.Unlike "Postosuchus" and "Luperosuchus", which have their palpebral forming the entire upper edge of their orbit, "Prestosuchus" has additional bones forming part of the upper edge; the postfrontal always participates in the orbit, and smaller specimens without a palpebral have the frontal contribute as well.