Figure 2

Comparative profiles based on the three anatomic regions. Three patterns of profiles are detected: 1) that expressed by the masticatory apparatus and the whole skull in which inter-and intraspecific variations are exposed along the first and second axes, separately; 2) that illustrated by the face as a whole. Its structure is opposite to that shown in the previous pattern, and 3) that demonstrated by the cranium as a whole. Its pattern is opposite to that expressed by the first one, and also different from pattern 2 in terms of separation among species and arrangement along the second axis.