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. 2013 Sep 18;8(9):e74842. doi: 10.1371/journal.pone.0074842

Figure 5. Terrestrial radial head PCA.

Figure 5

Principal component scores from the analysis of terrestrial taxa. PC1 vs. PC2 (A) and PC1 vs. PC3 (B) have 95% convex hulls representing the sprawled and parasagittal taxa. The origin of each axis is represented by the shape of the consensus (C). Shape change along the principal component axes is shown with the location of the consensus shown at the origin (C). Landmarks 1 (middle of the ulnar articular surface) and 10 are labeled.