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Neighbour joining tree based on the Mahalanobis distances obtained after the PC scores. Polygons are lateral and frontal visual displays of group differences: the thick, solid lines depict the Procrustes mean of each group and the thin lines represent the consensus. Only the most divergent groups (BJC, TUL and TLA) are presented, in order to depict main trends of morphological variation in the sample. Changes are exaggerated twice.
