Figure S1 in Morphometric, Behavioral, and Genomic Evidence for a New Orangutan Species

Figure S1. Comparisons of five dental variables across P. abelii (red), P. pygmaeus (blue), P. tapanuliensis (black horizontal line), and P. p. palaeosumatrensis (green). Related to Figure 1B. Variables include upper canine breadth (A), lower canine breadth (B), lower M1 length (C), lower M1 breadth (D), and lower M1 area (E). For each boxplot, the middle line is the median value of the distribution, with the box representing the first (lower extreme) and third (upper extreme) quartile values (i.e., the interquartile range [IQR]), and the whiskers representing the lower and upper extreme values that are within 1.5 x IQR of the first and third quartile values. Exact permutation analyses suggested that P. tapanuliensis could be differentiated statistically from the P. abelii mean for both the upper (p-value<0.001) and lower canine breadths (p-value<0.001) and from the P. 'pygmaeus' palaeosumatrensis mean for lower M1 length (p-value<0.001), breadth (p-value<0.001), and area (p-value<0.001). P. tapanuliensis could not be differentiated statistically from the P. pygmaeus mean for any of the five dental measures.