兰州大学机构库
Leaves and megasporophylls of Cycadophytes from the Lower Cretaceous of Beishan area, Gansu Province, Northwest China, and their evolutionary significance
Li, Aijing; Du, Baoxia; Peng, Jing; Lin, Shaohua; Zhang, Jing; Ma, Guorong; Hui, Jianguo
2023-11
Online publication date2023-08
Source PublicationCRETACEOUS RESEARCH   Impact Factor & Quartile
ISSN0195-6671 ; 1095-998X
Volume151
page numbers17
AbstractCycadophytes comprise ancient lineages of seed plants, and include Cycadales and Bennettitales. In this study, Phasmatocycas mazongshanensis sp. nov., represented by megasporophylls, is reported from the Lower Cretaceous of the Beishan area in Gansu Province, Northwest China. Based on the strip-shaped megasporophylls and ovules in two symmetrical rows, Phasmatocycas mazongshanensis is supposed to be closely related to Paleozoic primitive Cycadales. In addition, fossil leaves Pterophyllum beishanensis sp. nov. and Nilssoniopteris binggouensis are studied on leaf morphological and epidermal features. Syndetocheilic stomatal apparatus, thickened guard cells and curved anticlinal walls, all three features were observed on the epidermis, indicating that the leaves should be assigned to Bennettitales. The female reproductive organs of cycadophytes can be classified into four lineages: Phasmatocycas mode, Williamsonia mode, Cycas mode, and Zamia mode. Moreover, Phasmatocycas mazongshanensis is considered to be the lastest fossil record of Paleozoic-grade Cycadales. The reproduction of Phasmatocycas has previously been restricted to the Permian, but the new species, Phasmatocycas mazongshanensis, have been discovered from the Lower Cretaceous demonstrating its resurgence after a long absence from the stratigraphic record. & COPY; 2023 Elsevier Ltd. All rights reserved.
KeywordBennettitales Phasmatocycas Megasporophyll Epidermal features Early Cretaceous Beishan area
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI10.1016/j.cretres.2023.105636
Indexed BySCIE
Language英语
WOS Research AreaGeology ; Paleontology
WOS SubjectGeology ; Paleontology
WOS IDWOS:001058723600001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/569848
Collection兰州大学
Corresponding AuthorDu, Baoxia
Affiliation
Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Prov, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Li, Aijing,Du, Baoxia,Peng, Jing,et al. Leaves and megasporophylls of Cycadophytes from the Lower Cretaceous of Beishan area, Gansu Province, Northwest China, and their evolutionary significance[J]. CRETACEOUS RESEARCH,2023,151.
APA Li, Aijing.,Du, Baoxia.,Peng, Jing.,Lin, Shaohua.,Zhang, Jing.,...&Hui, Jianguo.(2023).Leaves and megasporophylls of Cycadophytes from the Lower Cretaceous of Beishan area, Gansu Province, Northwest China, and their evolutionary significance.CRETACEOUS RESEARCH,151.
MLA Li, Aijing,et al."Leaves and megasporophylls of Cycadophytes from the Lower Cretaceous of Beishan area, Gansu Province, Northwest China, and their evolutionary significance".CRETACEOUS RESEARCH 151(2023).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Li, Aijing]'s Articles
[Du, Baoxia]'s Articles
[Peng, Jing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Aijing]'s Articles
[Du, Baoxia]'s Articles
[Peng, Jing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Aijing]'s Articles
[Du, Baoxia]'s Articles
[Peng, Jing]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.