Mixed farming of rice and millets became the primary subsistence strategy 6400 years ago in the western Huanghuai plain of central China: new macrofossil evidence from Shigu - Yang, Yuzhang; Miaomiao, Miaomiao; Sun, Binggui; Li, Weiya; Cheng, Zhijie; Yao, Ling; Zhou, Xin; Zhang, Juzhong (Archaeological and Anthropological Sciences, 2023)