The palaeogeographical significance of specimens attributed to Protolepidodendro
详细信息   在线全文   PDF全文下载
  • journal_title:Geological Magazine
  • Contributor:HONG-HE XU ; YI WANG
  • Publisher:Cambridge University Press
  • Date:2008-
  • Format:text/html
  • Language:en
  • Identifier:10.1017/S0016756807004256
  • journal_abbrev:Geological Magazine
  • issn:0016-7568
  • volume:145
  • issue:2
  • firstpage:295
  • section:RAPID COMMUNICATIONS
摘要

Morphology of the leaves of stem compressions originally attributed to Protolepidodendron scharyanum from the Middle Devonian of North Xinjiang, China is reinvestigated. The leaf is three-dimensional, consisting of one central abaxial segment and four lateral adaxial segments, and does not conform to the once bifurcate leaf of Protolepidodendron. Specimens are therefore transferred to Leclercqia cf. L. complexa. This is the first unequivocal report of the genus Leclercqia in China based on complete leaf morphology. The distribution of Leclercqia is discussed, demonstrating a more or less cosmopolitan genus in the Middle Devonian. The Middle Devonian flora of North Xinjiang shows great similarity to that of Venezuela and North America, and almost no relationship with that of Yunnan, South China.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700