 Above the glenoid (shoulder socket) is a prominent roughened area for the "triceps" muscle.The lower front portion of the scapula has a large acromion, which is unusually hook-shaped in the type specimen of "P. chiniquensis" due to an oval notch on its upper edge.A low notch is also present at the front edge of the scapula-coracoid suture in most "Prestosuchus" specimens.