Palaeoproteomic analysis of ancient enamel proteins extracted from Middle Pleistocene Homo erectus specimens from the Zhoukoudian, Hexian and Sunjiadong sites in China suggests that they are a new genetic monogroup, and super-archaic introgression in Denisovans is likely to have originated from H. erectus.
- Qiaomei Fu
- Zhongyou Wu
- Xiaotian Feng