Liukou in Yinjiahui Town, Guichi District, Anhui Province (117.376, 30.515, Gaojiabian Formation)
Li, J.J. 1999. Lower Silurian graptolites from southern Anhui. Bulletin of the Nanjing Institute of Geology and Palaeontology, Academia Sinica 14, 70–157 (in Chinese, with English summary).