A new gnetalean macrofossil from the Early Cretaceous and its evolutionary significance
文献类型：期刊论文
| 作者 | Yang, Yong; Lin, Long-Biao; Ferguson, David K.; Zhang, Shou-Zhou; Wan, Tao4 |
| 刊名 | CRETACEOUS RESEARCH
 |
| 出版日期 | 2017 |
| 卷号 | 74页码:56-64 |
| 关键词 | Early Cretaceous Evolution Female spike Gnetophytes Liaoningia decussate Yixian formation |
| ISSN号 | 0195-6671 |
| DOI | 10.3389/fpls.2017.00950 |
| 文献子类 | Article |
| 英文摘要 | Modern gnetophytes consist of three families, i.e. the Ephedraceae, the Gnetaceae, and the Welwitschiaceae, which show diversified morphology. The basal group Ephedraceae possesses an extremely reduced female cone with only the uppermost pair/whorl being fertile, while both the Gnetaceae and the Welwitschiaceae bear female cones/spikes with multiple whorls of fertile bracts. Here, we describe a new ephedroid macrofossil, Liaoningia decussata Yang et Lin, gen. et sp. nov., from the Lower Cretaceous Yixian Formation of western Liaoning in China. This species has typical ephedroid morphology, e.g. the dichasial branching shoot system, swollen nodes, internodes having many fine longitudinal striations, and decussate phyllotaxy, lengthy linear leaves possessing two parallel veins, and female cones consisting of paired bracts. This new genus is similar to the Ephedraceae in its vegetative organs, but differs from the latter by the female spikes with multiple pairs of fertile bracts. In this respect Liaoningia is similar to both the Gnetaceae and the Welwitschiaceae, but distinctly differs from the latter two genera in its vegetative organs. As a result, our new genus shows intermediate morphology between the Ephedaceae and the other two families of the gnetophytes, and is probably a missing link in the evolutionary process from the Ephedraceae to the Glade including the Gnetaceae and the Welwitschiaceae. (C) 2017 Elsevier Ltd. All rights reserved. |
| 学科主题 | Plant Sciences |
| 出版地 | LONDON |
| 电子版国际标准刊号 | 1095-998X |
| WOS关键词 | YIXIAN FORMATION ; SP-NOV ; EPHEDROID PLANT ; GEN. ; DIVERSITY ; ONTOGENY ; SEEDS ; EPHEDRACEAE ; GNETOPHYTES ; PORTUGAL |
| 语种 | 英语 |
| WOS记录号 | WOS:000402858100005 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31270238, 31470301, J1310002] ; Scientific Research Project of Shenzhen Urban Administration [201519] ; Innovation of Science and Technology Commission of Shenzhen [JSGG20140515164852417] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/22194]  |
| 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.Shenzhen Fairy Lake Bot Garden, Shenzhen, Peoples R China 2.China Railway Grp Ltd, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, 20 Nanxincun, Beijing 100093, Peoples R China 4.Ferguson, David K.] Univ Vienna, Dept Paleontol, Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Yang, Yong,Lin, Long-Biao,Ferguson, David K.,et al. A new gnetalean macrofossil from the Early Cretaceous and its evolutionary significance[J]. CRETACEOUS RESEARCH,2017,74:56-64. |
| APA | Yang, Yong,Lin, Long-Biao,Ferguson, David K.,Zhang, Shou-Zhou,&Wan, Tao.(2017).A new gnetalean macrofossil from the Early Cretaceous and its evolutionary significance.CRETACEOUS RESEARCH,74,56-64. |
| MLA | Yang, Yong,et al."A new gnetalean macrofossil from the Early Cretaceous and its evolutionary significance".CRETACEOUS RESEARCH 74(2017):56-64. |
入库方式： OAI收割
来源：植物研究所
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