Fig. 7: Relationships of size, hypsodonty, and facial elongation to diet and shape (regression score of shape against each variable).

All three traits are significantly correlated with dietary differences as well as with total shape and PC1. These traits explain dietary differences better than total shape, and size and facial length together account for over 80% of the variance in PC1 (see the text). Differences in size-shape allometry (slopes) among dietary categories are significant, with pairwise tests distinguishing frugivores (i.e., Cephalophini) from all other categories and browsers from mixed feeders.