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Procrustes superimposition of one landmark and 79 semi-landmarks on 60 molars without semi-landmark alignment (a), and aligned by minimum bending energy (b) and minimum Procrustes distance (c) criteria. Procrustes superimposition of 30 facial skeletons from Chubut with eight landmarks and 74 semi-landmarks without semi-landmark alignment (d), and aligned by minimum bending energy (e) and minimum Procrustes distance (f) criteria.
