Knowledge Management System Of Institute Of Botany,CAS
| Additional observations on Zosterophyllum yunnanicum Hsu from the Lower Devonian of Yunnan, China | |
| Edwards, Dianne; Yang, Nan; Hueber, Francis M.; Li, Cheng-Sen | |
| 2015 | |
| Source Publication | REVIEW OF PALAEOBOTANY AND PALYNOLOGY
 |
| ISSN | 0034-6667 |
| Volume | 221Pages:220-229 |
| Abstract | 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. |
| Keyword | Zosterophyllum yunnanicum Sporangial border Dehiscence Early Devonian Yunnan Province |
| Subject Area | Plant Sciences ; Paleontology |
| DOI | 10.1016/j.revpalbo.2015.03.007 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EARLY LAND PLANTS ; OLD RED SANDSTONE ; POSONGCHONG FORMATION ; SOUTH-WALES ; BIOSTRATIGRAPHIC METHOD ; XUJIACHONG FORMATION ; NORTHEASTERN YUNNAN ; WELSH BORDERLAND ; XITUN FORMATION ; COMPLEX-PLANT |
| WOS Research Area | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS ID | WOS:000361777900022 |
| Publisher | ELSEVIER SCIENCE BV |
| Subtype | Article |
| Publication Place | AMSTERDAM |
| EISSN | 1879-0615 |
| Funding Organization | Chinese Academy of Sciences [2013T2S0022] ; Royal Society |
| Corresponding Author Email | EdwardsD2@cardiff.ac.uk |
| OA | Green Accepted |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/25702 |
| Collection | 系统与进化植物学国家重点实验室 |
| Affiliation | 1.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 3.Hueber, Francis M.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 1-s2.0-S003466671500（2456KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment