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. 1999 Jan 5;96(1):313–317. doi: 10.1073/pnas.96.1.313

Figure 5.

Figure 5

(a–e) Right third metacarpal and proximal phalanx. (a) Papio. (b) Dryopithecus. (c). Pan. (d) Oreopithecus (proximal phalanx undetermined). (e) Homo. For comments, see text. (f–m) Capitate/metacarpal 2 morphology in apes, hominids, and Oreopithecus. (i) Proconsul. (f and j) Pan troglodytes. (g, k, and l) O. bambolii (BA#151 capitate; BA#165 Mc2; and BA#208 Mc2). (h and m) H. sapiens. Arrows indicate the orientation of the facets for the metacarpal 2 on the capitate and for the capitate on the mc2. Note the human-like (proximal) orientation of the facet for the capitate in Oreopithecus and in Homo and the ape (medial) orientation in Pan. Note the lack of waisting on the Oreopithecus capitate and the Homo capitate and its presence in Pan.