Xiangshuiao Reservoir in Shidian County, Yunnan Province (99.198, 24.724, Zhongcao Formation)
Ni,Y.N. 1997. Late Homerian (Wenlock, Silurian) graptolites from Shidian, western Yunnan, China. Acta Palaeontologica Sinica, 36: 310-320.