The Dadiwan culture (c. 7900–7200 BP) was a Neolithic culture located primarily in the eastern portion of Gansu and Shaanxi provinces in modern China. The culture takes its name from the deepest cultural layer found during the original excavation of the type site at Dadiwan. The remains of millet, pigs and dogs have been found in sites associated with the culture, which is itself defined by a thin-walled, cord-marked ceramic tradition sometimes referred to as Laoguantai. The site has continued to produce new information about the Dadiwan culture, for example, recent biogeochemical analyses reveal that dogs living at Dadiwan from 7900–4900 calBP likely consumed C4 carbon fixation plants throughout the year. Because all other wild animals (like deer and bear) found at the site only consumed