Reinvestigation of the Late Devonian Shougangia bella and new insights into the evolution of fern-like plants | |
Wang, De-Ming1; Zhang, Ying-Ying1; Liu, Le2; Xu, Hong-He (徐洪河)3; Qin, Min1; Liu, Lu1 | |
刊名 | JOURNAL OF SYSTEMATIC PALAEONTOLOGY |
2018 | |
卷号 | 16期号:4页码:309-324 |
关键词 | Dissected Stele Fern-like Plants Leaf Evolution Monilophytes Secondary Xylem Wutong Formation |
ISSN号 | 1477-2019 |
DOI | 10.1080/14772019.2017.1289269 |
英文摘要 | Shougangia bella from the Late Devonian (Famennian) of South China is a fern-like plant known for its morphology and now provided with anatomy and a reconstruction. Its stems contain a dissected stele with a four-ribbed and an elongate-curved primary xylem segments changing to three elongate and slightly curved segments. Primary branches have a dissected stele with three similar primary xylem segments as in stems. The primary xylem of the stems and primary branches is mesarch, and individual primary xylem segments bear peripheral protoxylem strands and are surrounded by secondary xylem. Shougangia is anatomically compared with fern-like plants, zygopterid ferns and early seed plants, verifying its uncertain affinity at class and order levels as suggested by morphology, or representing a new order within the Cladoxylopsida. On the basis of anatomy and branching pattern, it is emphasized that most fern-like plants appear evolutionarily closely related to iridopteridaleans. Secondary xylem is involved not only in mechanical support, but also more likely in enhancing water supply for fern-like plants including Shougangia. By the Late Devonian, besides the abrupt drop of atmospheric CO2 levels, the presence of secondary xylem may correlate well with the primary radiation of leaves (megaphylls) of euphyllophytes (e.g. fern-like plants, sphenopsids, progymnosperms and seed plants). |
资助项目 | National Natural Science Foundation of China[41672007] |
WOS关键词 | New-york-state ; Sp-nov ; Denglongia-hubeiensis ; Southeastern Morocco ; Pietzschia-levis ; Arctic Canada ; West-virginia ; South China ; Anatomy ; Cladoxylopsida |
WOS研究方向 | Evolutionary Biology ; Paleontology |
语种 | 英语 |
出版者 | TAYLOR & FRANCIS LTD |
WOS记录号 | WOS:000419888100002 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/18767] |
专题 | 中国科学院南京地质古生物研究所 南京地质古生物研究所_其他 |
通讯作者 | Wang, De-Ming; Xu, Hong-He (徐洪河) |
作者单位 | 1.Peking Univ, Dept Geol, Key Lab Orogen Belts & Crustal Evolut, Beijing, Peoples R China 2.China Univ Min & Technol Beijing, Sch Geosci & Surveying Engn, Beijing, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, De-Ming,Zhang, Ying-Ying,Liu, Le,et al. Reinvestigation of the Late Devonian Shougangia bella and new insights into the evolution of fern-like plants[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2018,16(4):309-324. |
APA | Wang, De-Ming,Zhang, Ying-Ying,Liu, Le,Xu, Hong-He ,Qin, Min,&Liu, Lu.(2018).Reinvestigation of the Late Devonian Shougangia bella and new insights into the evolution of fern-like plants.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,16(4),309-324. |
MLA | Wang, De-Ming,et al."Reinvestigation of the Late Devonian Shougangia bella and new insights into the evolution of fern-like plants".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 16.4(2018):309-324. |
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