Tashan Village in Yuqian Town, Zhejiang Province (119.399, 30.193, Yuchien Formation)
Ge, M.Y. 1984. The Graptolite Fauna of the Ordovician—Silurian Boundary Section in Yuqian, Zhejiang. 389-453. In Nanjing Institute of Geology and Palaeontology, Academia Sinica (ed.). Stratigraphy and palaeontology of systemic boundaries in China, Ordovician-Silurian boundary 1. Anhui Science and Technology Publishing House, Hefei, 516 pp.