Editing Pygmy marmoset (section)

== Physical description ==
[[File:Callithrix pygmaea.jpg|thumb|The pygmy marmoset is the world's smallest monkey.]]
[[File:Cebuella skull frontal view.jpg|thumb|Skull of a pygmy marmoset]]
Pygmy marmosets are the smallest true monkey, with a head-body length ranging from {{cvt|117|to|152|mm|abbr=on}} and a tail of {{cvt|172|to|229|mm|abbr=on}}. The average adult body weight is just over {{cvt|100|g}} with the only sexual dimorphism of females being a little heavier.<ref name="Nowak1999">{{Cite book | last = Nowak | first = R. M. | year = 1999 | title = Walker's Mammals of the World | edition = 6th | publisher = The Johns Hopkins University Press | location = Baltimore and London | pages = 566 | isbn = 978-0-8018-5789-8}}</ref><ref name="Soini1988">{{Cite journal | last1 = Soini | first1 = P. | doi = 10.1159/000156066 | title = Ecology and population dynamics of the pygmy marmoset, ''Cebuella pygmaea'' | journal = Folia Primatologica | volume = 39 | pages = 1–21 | year = 1982 | issue = 1–2 | pmid = 6815036}}</ref> The fur colour is a mixture of brownish-gold, grey, and black on its back and head and yellow, orange, and tawny on its underparts. Its tail has black rings and its face has flecks of white on its cheeks and a white vertical line between its eyes.<ref name="Soini1988" /> It has many adaptations for [[arboreal]] living, including the ability to rotate its head 180° and sharp, claw-like nails used to cling to branches and trunks of trees.<ref name="Kinzey1997">{{Cite book | last = Kinzey | first = W. G. | year = 1997 | chapter = Synopsis of New World primates (16 genera) | editor = Kinzey, W. G. | title = New World Primates: Ecology, Evolution, and Behavior | location = New York | publisher = Aldine De Gruyter | pages = 169–324}}</ref><ref name="Sussman2000">{{Cite book | last = Sussman | first = R. W. | year = 2000 | title = Primate Ecology and Social Structure | volume = 2: New World Monkeys | location = Needham Heights, MA | publisher = Pearson Custom Publishing}}</ref> Its [[Dentition|dental morphology]] is adapted to feeding on gum, with specialised incisors that are used to gouge trees and stimulate [[Plant sap|sap]] flow. The [[cecum]] is larger than usual to allow for the greater time [[Natural gum|gum]] needs to break down in the stomach.<ref name="Sussman2000" /> Pygmy marmosets walk on all four limbs and can leap up to {{cvt|5|m}} between branches.<ref name="Kinzey1997" /><ref name="Jackson2011">{{Cite journal | last1 = Jackson | first1 = C. P. | title = The positional behavior of pygmy marmosets (''Cebuella pygmaea'') in northwestern Bolivia | doi = 10.1007/s10329-011-0237-7 | journal = Primates | volume = 52 | issue = 2 | pages = 171–178 | year = 2011 | pmid = 21360318| s2cid = 36923830 }}</ref>