Fig. S1. Mandibular antimeric variation illustrated on Sts 52 3D enamel–dentine junctions (EDJs).

Fig. S2. Maxillary antimeric variation illustrated on Sts 52 EDJs.

Fig. S3. Mandibular molar antimeric variation illustrated on two chimpanzee (Pan troglodytes and Pan paniscus) 3D-EDJs.

Fig. S4. Mandibular 3D-EDJ M1/M2 antimeric variation and M1 3D-EDJ/Outer enamel surface (OES) differences illustrated on two extant humans.

Fig. S5. Mandibular 3D-EDJ M1/M2 antimeric variation; M1 and M2 3D-EDJ/OES differences illustrated on one extant human.

Fig. S6. Mandibular metameric variation of the premolar enamel–dentine junctions (EDJs) of a pygmy chimpanzee (Pan paniscus) and a common chimpanzee (Pan troglodytes).

Table S1. Three dimensional non-projected angles (in degrees) measured at the level of the apices of the main dentine horns (DHs) on the mandibular molars (Prt, Protoconid; Hyp, Hypoconid; Ent, Entoconid; Met, Metaconid; Hyld, Hypocolunid).

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