Zhang, Y.-C.; Cheng, L.-R.; Shen, S.-Z. (2010). Late Guadalupian (Middle Permian) Fusuline Fauna from the Xiala Formation in Xainza County, Central Tibet: Implication of the Rifting Time of the Lhasa Block. Journal of Paleontology. 84(5): 955-973.
Late Guadalupian (Middle Permian) Fusuline Fauna from the Xiala Formation in Xainza County, Central Tibet: Implication of the Rifting Time of the Lhasa Block