orangutans are known from Peninsular Malaysia that date to 60,000 years ago. The youngest remains from South China, which are teeth assigned to P. weidenreichi, date to between 66 and 57,000 years ago. The range of orangutans had contracted significantly by the end of the Pleistocene, most likely because of the reduction of forest habitat during the Last Glacial Maximum. They may have nevertheless survived into the Holocene in Cambodia and Vietnam.

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