Figure 1
From: Statistical support for the hypothesis of developmental constraint in marsupial skull evolution
Principal component (PC)s 1 and PC2 and selected wireframes and line drawings for the ‘maximum landmarks’ dataset. (Top) dorsal and (bottom) lateral views. Letters represent placental taxa, as described in the key; squares represent marsupials. Solid line indicates the range of morphospace occupied by placental taxa; dashed line represents occupied morphospace for marsupials.