Devonian-Carboniferous strata in the Wulankeshun region of northwestern Junggar Basin, NW China, are represented by continuous and monoclinal outcrops of the Zhulumute, Hongguleleng to Heishantou formations. In particular, the Hongguleleng Formation contains diverse macrofossils and microfossils, as well as abundant facies indicators. Lithologically, the formation can be divided into three members. The lower member is made of gray, greyish-yellow bioclastic limestones, the middle member consists of red purple or greyish-green tuffaceous deposits, and the upper member is composed of greyish-green, greyish-yellow bio- clastic limestones and calcareous-pelitic clastic rocks. Considering that it is located in tectonically complex area, the Wulankeshun section is exceptionally preserved and should be regarded as a candidate for the type section of the Hongguleleng Formation. According to conodonts and other megafossils, the age of the Hongguleleng Formation ranges from the late Frasnian （Devonian） to early Tournaisian （Carboniferous）.
Journal of Stratigraphy