 The jaws of "Proterosuchus" contained numerous teeth, with up to 9 premaxillary, 31 maxillary, and 28 dentary teeth in each side.The teeth of "Proterosuchus" were recurved, labiolingually compressed, and serrated, as in most archosauriforms.They were isodont, or all equal in size and shape, in adult individuals, but in juveniles, the teeth were less strongly curved in the back of the jaw.