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What is the purpose of brow ridges in primates? Why are they universal in anthropoids but not prosimians? Why don’t humans have them? How do they affect perception, notably vision? Do they protect the eyes more than not having brow ridges? What other anatomical structures are linked with brow ridges? I don’t have much background here, but my best guess is that brow ridges have something to do with absorbing shock or pressure from chewing with shorter muzzles? Please enlighten. Thanks!

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  • $\begingroup$ Gorilla brow ridges are awesome... cdn.shopify.com/s/files/1/1467/6660/products/… the eye is basically armor-reinforced. perhaps it can help with sun shade. $\endgroup$ – com.prehensible May 17 at 11:19
  • $\begingroup$ Brow ridges on anybody are awesome ain’t they? Makes you look fierce & serious don’t they? $\endgroup$ – Bluelangur May 17 at 12:03
  • $\begingroup$ Must brow ridges have a purpose? What if they are a phenomenon that results from some other anatomy? $\endgroup$ – kmm May 17 at 12:29
  • $\begingroup$ That’s what I’m trying to find out here, just what exactly they are. $\endgroup$ – Bluelangur May 17 at 15:24

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