FIGURE 79. Schematic cross-sections through the skull of Sphenodon. A Cross-section through the posterior skull roof of Sphenodon; B Diagrammatic section through the central skull roof of Sphenodon; C Diagrammatic section through the anterior skull roof of Sphenodon. Light blue = frontal, purple = ectopterygoid, red = jugal or parietal, gold = maxilla, green = palatine or postfrontal, dark blue = postorbital.