FIGURE 25. Right lower jaw model of Sphenodon (LDUCZ x036), based on micro CT data, labelled with areas of muscle attachment according to Haas (1973), Gorniak et al. (1982) and Wu (2003). 25.1 Medial view. 25.2 Dorsomedial view. 25.3 Lateral/labial view. The bump on the ventral surface is a pathology probably acquired from infection of a wound received during fighting with conspecifics.