First megafossil record of Neolepisorus (Polypodiaceae) from the late Miocene of Yunnan, Southwest China

详细信息    查看全文

• 作者：Sanping Xie ; Binke Li ; Sihang Zhang ; Yang Shao ; Jingyu Wu ; Bainian Sun
• 刊名：Pal?ontologische Zeitschrift
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：90
• 期：2
• 页码：413-423
• 全文大小：3,536 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Paleontology
  Geology
  
• 出版者：Springer Berlin Heidelberg
• ISSN：1867-6812
• 卷排序：90

文摘

The first megafossil record of the genus Neolepisorus Ching from the late Miocene of Yunnan Province, SW China, is reported. Neolepisoruschingii sp. nov. is represented by a simple fertile frond with one line exindusiate, elliptic-fusiform sori along the lower part of the midrib, and a basal contractive sterile frond with a sinuolate margin. The venation is characterized by a strong midrib, prominent zigzagging lateral veins, and reticulate higher order veins with free-ending veinlets (simple or forked once). The combination of these characters confirms the genus Neolepisorus (Polypodiaceae), now distributed in subtropical Southeast Asia, except for one species, which inhabits Madagascar of tropical Africa. It has a distribution center south of the Yangtze River in China. So far, no megafossil assigned to Neolepisorus has been reported, and the occurrence of Neolepisoruschingii in SW China associated with other types of fern occurrence adds increased evidence of fern radiation during the Neogene in Yunnan Province in response to the uplift of the Tibetan Plateau.KeywordsNeolepisorusPolypodiaceaeMioceneYunnanP.R. of China