Supplementary Text and Table S1; Figures S1 - S2 from Fracture mechanics, enamel thickness and the evolution of molar form in hominins

Figure S1: Schematic of the geometric model used to quantify crown strength: P, critical load, or the load needed to induce failure; d is the local enamel thickness; and re the cusp radius (equal to BCD/2; see figure 1c).; Figure S2: Phylogenetic tree of the species used in phylogenetic regressions.