• 责任者：Gao Lianda（Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Zongqi
• 刊名：Geological Bulletin of China
• 出版年：2009
• 卷期：28(4)
• 关键词：中泥盆世 ; Middle Devonian ; 孢子 ; spore ; 秦岭 ; Qinling Mountains
• 页码：p.403-411
• 图表：1 illus., 3 plates, 47 refs.
• 分类号：1102
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Discrepancy remains on the age of the Sanhuashi Group and Xixiang Group, Hannan, Shaanxi Province. Abundant continental spores which can be categorized into 40 varieties, 22 genera with indicative timing feature were discovered in grey and black grey sandy plate rocks of Baimianxia Formation. This fossil assemblage with the most possible age of Middle Devonian or early Middle Devonian can be roughly correlated with those Devonian spores in South China, Southwest China and West Qingling, or furthermore with early Middle Devonian spores from Europe and North America ancient red sandstone and its vicinities, to be more exact, early Eifelian of Middle Devonian in West Europe.