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Figure 1

From: Form and function of the human and chimpanzee forefoot: implications for early hominin bipedalism

Figure 1

Comparative morphology of Homo, Pan and A. afarensis (AL-333) metatarsals (MT1–MT5).

Note that Homo is characterized by dorsal overlap of the distal articular surface onto the MT shaft and by wide flattening of the dorsal articular surface (arrows). AL-333-115 demonstrates Homo-like dorsal overlap but lacks mediolateral widening at the MT1, similar to the condition seen in Pan. Left column: distal view. Right column: medial view. Bar: 1 cm.

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