Fig. 5.

Principal components analysis (PCA) of labyrinthine shape variation. (A) Graphing the first two components of shape space, PC1 and PC2, shows a common pattern of size-related shape variation (grey arrow approximately parallel to PC1), and major differences in shape between Malagasy primates and lorisiform primates (along PC2). Downward-pointing triangles: Cheirogaleidea; upward-pointing triangles: Lemuroidea; +: Daubentoniidae; X: Galagidae; Y: Lorisidae; stars: Adapinae; Z: Tarsiidae; Red vertical rectangles: Cebidae; Red horizontal rectangles: Cercopithecidae; Red squares: Hominidae; Orange diamonds: Scandentia; Orange circles: Dermoptera. (B) Patterns of labyrinthine shape variation associated with PC1 and PC2, respectively.