Editing Human evolution (section)

=== Ulnar opposition ===
[[File:Erpurua eta hatz txikia.jpg|thumb|120px|Only the human is able to touch the little finger with the thumb.]]
The ulnar opposition—the contact between the thumb and the tip of the [[little finger]] of the same hand—is unique to the [[Homo|genus ''Homo'']],<ref>{{Cite journal |last=Young |first=Richard W. |date=January 2003 |title=Evolution of the human hand: The role of throwing and clubbing |journal=Journal of Anatomy |volume=202 |issue=1 |pages=165–174 |doi=10.1046/j.1469-7580.2003.00144.x |issn=0021-8782 |pmc=1571064 |pmid=12587931}}</ref> including Neanderthals, the [[Atapuerca Mountains|Sima de los Huesos]] [[Hominini|hominins]] and [[Homo sapiens|anatomically modern humans]].<ref name="Miriam">{{cite book |last=Ittyerah |first=Miriam |title=Hand Preference and Hand Ability: Evidence from studies in Haptic Cognition |publisher=[[John Benjamins Publishing]] |date=2013 |pages=37–38 |isbn=978-90-272-7164-8}}</ref><ref>{{cite web |last=Wilson |first=Frank R. |url= https://www.nytimes.com/books/first/w/wilson-hand.html |title=The Hand How Its Use Shapes the Brain, Language, and Human Culture |work=The New York Times |access-date=July 2, 2017 |archive-date=August 28, 2017 |archive-url= https://web.archive.org/web/20170828024550/http://www.nytimes.com/books/first/w/wilson-hand.html |url-status=live}}</ref> In other primates, the thumb is short and unable to touch the little finger.<ref name="Miriam" /> The ulnar opposition facilitates the precision grip and power grip of the human hand, underlying all the skilled manipulations.