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Anonymous
Not exactly what kind of answer you are looking for, but Orangutans (like all monkeys, apes, and tarsiers) are Haplorrhines. This literally means they have dry noses as opposed to a rhinarium found on lemurs and other prosimian primates. They are also Cattarhines (Old World monkeys, apes) which means their nostrils are pointed downward as opposed to a Plattyrhines (New World monkeys) which have a wide septum.
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