Supplementary material S9 from The morphology of the inner ear of squamate reptiles and its bearing on the origin of snakes PalciAlessandro HutchinsonMark N. W. CaldwellMichael S. Y. LeeMichael 2017 Three-dimensional phylogenetic PCA plot of PC1 vs PC2 vs PC3 (based on phylogeny where <i>Dinilysia</i> is a stem alethinophidian). Colour coding is the same as in Figure 2.