Additional observations on Zosterophyllum yunnanicum Hsu from the Lower Devonian of Yunnan, China
文献类型：期刊论文
| 作者 | Edwards, Dianne; Yang, Nan; Hueber, Francis M.; Li, Cheng-Sen |
| 刊名 | REVIEW OF PALAEOBOTANY AND PALYNOLOGY
 |
| 出版日期 | 2015 |
| 卷号 | 221页码:220-229 |
| 关键词 | Zosterophyllum yunnanicum Sporangial border Dehiscence Early Devonian Yunnan Province |
| ISSN号 | 0034-6667 |
| DOI | 10.1016/j.revpalbo.2015.03.007 |
| 文献子类 | Article |
| 英文摘要 | Investigation of unfigured specimens in the original collection of Zosterophyllum yunnanicum Hsu, 1966 from the Lower Devonian (upper Pragian to basal Emsian) Xujiachong Formation, Qujing District, Yunnan, China has provided further data on both sporangial and stem anatomy. We show that the sporangia dehisced into more or less equal valves through a mechanism that involved the development of large thick-walled cells. Furthermore the coalified xylem is composed of tracheids with G-type thickenings (predominantly annular secondary thickenings with small circular to irregular perforations in the intervening wall), confirming the presence of this form of vascular element in the genus Zosterophyllum. The species diagnosis is emended. Characterisation of dehiscence mechanisms in fossil sporangia is complicated by their different modes of preservation. A brief critical survey of the marginal features in bivalved sporangia in zosterophylls and other selected species is followed by a discussion on their putative functional significance. Preservation notwithstanding, we identify clear differences in mechanisms related to the nature of the underlying cellular structure of the dehiscence feature. The distinctive groove present in many species might represent a mechanism for regulating the timing of dehiscence in response to atmospheric conditions. (C) 2015 Elsevier B.V. All rights reserved. |
| 学科主题 | Plant Sciences ; Paleontology |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1879-0615 |
| WOS关键词 | EARLY LAND PLANTS ; OLD RED SANDSTONE ; POSONGCHONG FORMATION ; SOUTH-WALES ; BIOSTRATIGRAPHIC METHOD ; XUJIACHONG FORMATION ; NORTHEASTERN YUNNAN ; WELSH BORDERLAND ; XITUN FORMATION ; COMPLEX-PLANT |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000361777900022 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Chinese Academy of Sciences [2013T2S0022] ; Royal Society |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25702]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales 2.Hueber, Francis M.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Edwards, Dianne,Yang, Nan,Hueber, Francis M.,et al. Additional observations on Zosterophyllum yunnanicum Hsu from the Lower Devonian of Yunnan, China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2015,221:220-229. |
| APA | Edwards, Dianne,Yang, Nan,Hueber, Francis M.,&Li, Cheng-Sen.(2015).Additional observations on Zosterophyllum yunnanicum Hsu from the Lower Devonian of Yunnan, China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,221,220-229. |
| MLA | Edwards, Dianne,et al."Additional observations on Zosterophyllum yunnanicum Hsu from the Lower Devonian of Yunnan, China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 221(2015):220-229. |
入库方式： OAI收割
来源：植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。