![](http://www.alamy.com/thumbs/6/C5A5994E-5816-4968-9426-51309100E893/D9DGR2.jpg)
Primate skeltons from Gibbon, left, to Man. Gibbon proportionally twice natural size.
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archival, archive, evolution, gibbon, historical, history, human, left, man., natural, primate, proportionally, science, size., skeltons, theory