Citation: | GAO Lian-da, WANG Zong-qi, WANG Tao, JIANG Chun-fa, YAN Zhen, YAN Quan-ren. 2009: Discovery of the Middle Devonian spores from Baimianxia Formation of Sanhuashi Group, Xixiang-Shiwquan region,South Qinling, China and its geological significance. Geological Bulletin of China. Geological Bulletin of China, 28(4): 403-411. DOI: 10.12097/gbc.20090401 |