Editing Convergent evolution (section)

=== Opposable thumbs ===

[[Opposable thumb]]s allowing the grasping of objects are most often associated with [[primates]], like humans and other apes, monkeys, and lemurs. Opposable thumbs also evolved in [[giant pandas]], but these are completely different in structure, having six fingers including the thumb, which develops from a wrist bone entirely separately from other fingers.<ref>{{cite web|title=When is a thumb a thumb?|url=http://evolution.berkeley.edu/evolibrary/article/analogy_06|website=Understanding Evolution|access-date=2015-08-14|archive-url=https://web.archive.org/web/20151016133905/http://evolution.berkeley.edu/evolibrary/article/analogy_06|archive-date=2015-10-16|url-status=live}}</ref>