Figure 3.

(a) Two first axes of the PCA conducted on the shape data of the modern species dentaries showing important morphological overlaps between taxa. (b) Neighbour-joining tree using the Mahalanobis distances based on shape data of modern species. (c) Predicted values of dentary shape from species-specific regressions versus log of centroid size showing differences of allometry in modern and fossil specimens. (d) Neighbour-joining tree constructed on the Mahalanobis distances between the shape data of fossil and modern species showing morphological distances between fossils and modern groups. (e) Two first axes of the PCA conducted on shape data collected for fossil and modern A. ferreus dentaries showing a diminution of morphological variability between fossil and modern anoles. (Online version in colour.)