Figure S2 in Morphometric, Behavioral, and Genomic Evidence for a New Orangutan Species

Figure S2. Kernel density mirror plot of Euclidean D2 analyses of six principal components calculated from 26 cranio-mandibular morphological variables. Related to Figure 1C. The between-species distribution (blue line) was calculated as the distances of all P. abelii samples to the P. pygmaeus centroid plus all of the P. pygmaeus samples to the P. abelii centroid, whereas the within-species distribution (red line) was calculated as the distances of all P. abelii samples to the P. abelii centroid plus all of the P. pygmaeus samples to the P. pygmaeus centroid. The dotted line represents the distance of the P. tapanuliensis sample to the P. abelii centroid (exact permutation test; within-species distribution: p-value<0.001; between-species: p-value<0.001), whereas solid line represents the distance of the P. tapanuliensis samples to the P. pygmaeus centroid (within-species: p-value<0.001; between-species: p-value<0.001).