Wangjiawan Section in Yichang, Hubei Province (111.305, 30.697, Wufeng Formation)
Chen, X., Lin, Y.K. 1984. On the material of Glyptograptus persculptus (Salter) from the Yangzi Gorges, China. 191-202. 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.