Micro-CT reconstructions are as follows: (a) segmentation of enamel and dentine; (b) section through the mesial cusps of an Australopithecus molar; enamel over cusp tips in this section is thicker than the lateral enamel; (c) enamel thickness distribution in mandibular molars; the scale of enamel thickness is relative to each tooth. Paranthropus and Australopithecus molars have thicker enamel at the cusp tips than at the lateral aspect of the cusps.
Plot depicting three-dimensional RET ranges. Line inside the box represents the mean, ends of boxes are 25th and 75th percentiles and whiskers represent the range. Martin's (1985) thickness categories (and Grine & Martin's 1988 hyper-thick category) are shown to the right, and as dashed lines.