Editing Oreopithecus (section)

===Dexterity===
''Oreopithecus'' had hominin-like hand proportions that allowed a firm, pad-to-pad precision grip. Features present in the hands of neither non-human-extant nor fossil apes include hand length, relative thumb length, a deep and large insertion for the [[Flexor pollicis longus muscle|flexor pollicis longus]], and the shape of the [[carpometacarpal joint]] between the [[second metacarpal bone|metacarpal bone of the index finger]] and the [[capitate bone]].
<ref name="Moyà-Solà-1999">{{harvnb|Moyà-Solà|Köhler|Rook|1999}}</ref><!-- Abstract -->
At the base of the [[second metacarpal bone]], the facet for the [[Capitate bone|capitate]] is oriented transversally, as in hominins. The capitate, on the other hand, lacks the waisting associated with apes and climbing, and still present in ''[[Australopithecus]]''. ''Oreopithecus'' share the specialised orientation at the carpometacarpal joint with ''[[Australopithecus afarensis|A. afarenis]]'' and the marked groove for the flexor pollicis longus with ''[[Australopithecus africanus|A. africanus]]''. It is thus likely that the hand morphology of ''Oreopithecus'' is [[Synapomorphy|derived]] for apes and [[convergent evolution|convergent]] for early hominins.
<ref name="Moyà-Solà-1999"/><!-- pp 315–316 -->