A callosity is a type of callus, a piece of skin that has become thickened as a result of repeated contact and friction. == Primates == All Old World monkeys, gibbons, and some chimpanzees have pads on their rears known as ischial callosities.
A callosity is a type of callus, a piece of skin that has become thickened as a result of repeated contact and friction. == Primates == All Old World monkeys, gibbons, and some chimpanzees have pads on their rears known as ischial callosities.
Source: Wikipedia "Callosity" · CC BY-SA 4.0
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