NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Axial nature of the cupule-bearing organ in Caytoniales
Wang, Xin (王鑫)1,2
2010-05-01
Source PublicationJOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
Volume48Issue:3Pages:207-214
Abstract

Caytoniales are an important group of seed plants, and the nature of their female reproductive organ may influence interpretations of the seed plant phylogeny and the origin of angiosperms. Although not convincingly demonstrated by clear evidence, cupules on previously described specimens were interpreted as being distichously arranged, implying that the cupule-bearing organ in Caytoniales was a pinnate megasporophyll. Here a female reproductive organ of Paracaytonia hongtaoi gen. et sp. nov. (Caytoniales) is reported from Liaoning, China. The well preserved specimen clearly shows a spiral arrangement of cupules along the reproductive axis, suggesting that the cupule-bearing organ in Caytoniales is not a megasporophyll but a branch. This new information on the axial nature of the cupule-bearing organ in Caytoniales has significant implications on the placement of Caytoniales in the seed plant phylogeny and interpretation of the relationship between Caytoniales and angiosperms.

KeywordAngiosperms Caytoniales Cupule Evolution Paracaytonia Seed Plants Systematics Yixian Formation
DOI10.1111/j.1759-6831.2010.00072.x
Language英语
WOS KeywordSeed-plant Phylogeny ; Early Evolution ; Origin ; Angiosperms ; Ferns ; China ; Archaefructus ; Antarctica ; Flower
Funding ProjectNational Natural Science Foundation of China[40772006] ; National Natural Science Foundation of China[40632010] ; National Natural Science Foundation of China[J0630967] ; Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry, China
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000278085400006
Funding OrganizationNational Natural Science Foundation of China ; Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry, China
PublisherWILEY PERIODICALS, INC
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/374
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorWang, Xin (王鑫)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
2.Fairy Lake Bot Garden, Shenzhen 518004, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Wang, Xin . Axial nature of the cupule-bearing organ in Caytoniales[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2010,48(3):207-214.
APA Wang, Xin .(2010).Axial nature of the cupule-bearing organ in Caytoniales.JOURNAL OF SYSTEMATICS AND EVOLUTION,48(3),207-214.
MLA Wang, Xin ."Axial nature of the cupule-bearing organ in Caytoniales".JOURNAL OF SYSTEMATICS AND EVOLUTION 48.3(2010):207-214.
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