Editing Proboscis monkey (section)

=== Nose ===
[[File:Nasalis larvatus Paris 150110.jpg|thumb|Nasal cartilages that were left intact in a specimen skull in order to show the structures that support the nose]]
Further adding to the dimorphism is the large nose or [[proboscis]] of the male, which can exceed {{convert|10.2|cm|in|abbr=on}} in length,<ref>{{cite journal|last=Ellis |first=D. |date=1986 |title=Proboscis monkey and aquatic ape |journal=Sarawak Museum Journal |volume=36 |issue=57 |pages= 251–262}}</ref> and hangs lower than the mouth. Theories for the extensive length of their nose suggest it may be sexual selection by the females, who prefer louder vocalisations, with the size of the nose increasing the volume of the call.<ref>{{Cite web|url=http://www.worldlandtrust.org/education/species/proboscis-monkey|title=Proboscis Monkey |website=World Land Trust |access-date=2017-03-15}}</ref><ref name=Ankel2007>Ankel-Simons F. (2007) [https://books.google.com/books?id=Mwl3M6c5KzoC Primate Anatomy: an introduction], 3rd Ed. San Diego: Academic Press {{ISBN|0080469116}}.</ref><ref name=Payne1985/>

The nose is smaller in the female and is upturned in the young.<ref name=Britannica>{{cite web|url=https://www.britannica.com/animal/proboscis-monkey|title=proboscis monkey|author=<!--Not stated-->|date=19 Feb 2020|website=www.britannica.com|publisher=Encyclopedia Britannica Inc.|access-date=11 Feb 2022}}</ref> Nevertheless, the nose of the female is still fairly large for a primate. The skull of the proboscis monkey has specialized [[nasal cartilages]] that support the large nose.<ref name=":1" />