FIGURE 7. Joint relationships within Sphenodon. 1. rostral, 2. palatal, 3. roofing, 4. temporal, 5. metakinetic joints. 6. joints of the lower jaw. Braincase joints not shown. Dotted line = occasional contact, thin line = minor contact, medium line = intermediate contact, thick line = major contact, grey line = fusion, triple line = synovial joint.