Pongo weidenreichi
The Chinese orangutan (Pongo weidenreichi) is an extinct species of orangutan from the Pleistocene of South China. It is known from fossil teeth found in the Sanhe Cave, and Baikong, Juyuan and Queque Caves in Chongzuo, Guangxi. Its dental dimensions are 20% bigger than those of living orangutans. The youngest remains of the species date to between 66 and 57,000 years ago in Yincun Cave, Guangxi. References 

Pleistocene primates
Prehistoric apes
Pleistocene mammals of Asia
Orangutans