New Plants from the Lower Devonian Pingyipu Group, Jiangyou County, Sichuan Province, China
文献类型：期刊论文
| 作者 | Edwards, Dianne1; Geng, Bao-Yin; Li, Cheng-Sen |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2016 |
| 卷号 | 11期号:11 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0163549 |
| 文献子类 | Article |
| 英文摘要 | Descriptions of Lower Devonian plants from Yunnan, South China, have revolutionized concepts of diversity and disparity in tracheophytes soon after they became established on land. Sichuan assemblages have received little attention since their discovery almost 25 years ago and require revision. With this objective, fieldwork involving detailed logging and collection of fossils was undertaken in the Longmenshan Mountain Region, Jiangyou County and yielded the two new taxa described here. They are preserved as coalified compressions and impressions that allowed morphological but not anatomical analyses. Yanmenia (Zosterophyllum) longa comb nov is based on numerous rarely branching shoots with enations resembling lycophyte microphylls, without evidence for vasculature. The presence of sporangia is equivocal making assignation to the Lycopsida conjectural. The plant was recently described as a zosterophyll, but lacks strobili. These are present in the second plant and comprise bivalved sporangia. The strobili terminate aerial stems which arise from a basal axial complex displaying diversity in branching including H-and K-forms. These features characterise the Zosterophyllopsida, although the plant differs from Zosterophyllum in valve shape. Comparisons indicate greatest similarities to the Lower Devonian Guangnania cuneata, from Yunnan, but differences, particularly in the nature of the sporangium border, require the erection of a new species, G. minor. Superficial examination of specimens already published indicate a high degree of endemism at both species and generic level, while this study shows that Yanmenia is confined to Sichuan and Guangnania is one of the very few genera shared with Yunnan, where assemblages also show a high proportion of further endemic genera. Such provincialism noted in the Chinese Lower Devonian is explained by the palaeogeographic isolation of the South China plate, but this cannot account for differences/endemism between the Sichuan and Yunnan floras. Such an enigma demands further integrated geological, palaeobotanical and palynological studies. |
| 学科主题 | Multidisciplinary Sciences |
| 出版地 | SAN FRANCISCO |
| WOS关键词 | XUJIACHONG FORMATION ; YUNNAN PROVINCE ; LAND PLANTS ; SP-NOV. ; GEN. ; ASSEMBLAGES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000387909300003 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 资助机构 | Royal Society of LondonRoyal Society of London |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25027]  |
| 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.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China 2.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff, S Glam, Wales |
| 推荐引用方式 GB/T 7714 | Edwards, Dianne,Geng, Bao-Yin,Li, Cheng-Sen. New Plants from the Lower Devonian Pingyipu Group, Jiangyou County, Sichuan Province, China[J]. PLOS ONE,2016,11(11). |
| APA | Edwards, Dianne,Geng, Bao-Yin,&Li, Cheng-Sen.(2016).New Plants from the Lower Devonian Pingyipu Group, Jiangyou County, Sichuan Province, China.PLOS ONE,11(11). |
| MLA | Edwards, Dianne,et al."New Plants from the Lower Devonian Pingyipu Group, Jiangyou County, Sichuan Province, China".PLOS ONE 11.11(2016). |
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。