Fig. 3

The relationship between size and shape in African burrowing skinks. A The largest skull Acontias plumbeus (MCZ R-18358, top row, skull length = 31 mm) and the smallest skull Typhlacontias rohani (MCZ R-190458, bottom row, skull length = 5.13 mm) in dorsal, lateral, ventral, and labial views. Multivariate regression between centroid size and cranial shape (Regression score). Ordinary least squares regression lines are displayed for each B genus, excluding Mochlus which only had one species; and C subfamily except for Lygosominae, which only had one species. Multivariate regression between centroid size and mandibular shape (Regression score). Ordinary least squares regression lines are displayed for each D genus; and E subfamily