Figure 3 in The radiation of red colobus monkeys (Primates, Colobinae): morphological evolution in a clade of endangered African primates

Figure 3. Females. Scatter plots of the first principal components (PCs) of shape variables (percentages of variance explained in parentheses). Shape changes at positive extremes of the axes are illustrated using surface rendering with a two-fold magnification (the same magnification is used in all figures). The average shape (origin of the PCA axes) is shown by the upper right corner of the scatter plots in this and other figures. (a) PC1 vs. PC2. (b) PC3 vs. PC4.