Figure 7: (a) Anteroposterior ramus width (RAMAP) increased fastest with age (ARDA) in Papio and Pan troglodytes, and more slowly in Pan paniscus. (b) RAMAP contributed to around one quarter of adult mandible length in Papio and P. troglodytes and closer to one-third in P. paniscus. Red squares, Pan paniscus; teal triangles, Pan troglodytes; blue diamonds, Papio anubis.