Fig. 4. Scaling of morphological parameters from the model. 67% Buccal projected area (A), epaxial physiological cross-sectional area (PCSA) (B), buccal moment (C) and epaxial moment (D) are shown as a function of standard length in each of the species used in this study. Projected area measurements were made from a separate group of individuals of each species. The scaling relationships of these individuals are given in Table 1. The other three measurements were made from the individuals from whom pressure was recorded.