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Microstructure and significance of cordaitean reproductive organs from the lower Permian of Gansu, Northwest China
Wang, Zixi (王姿晰)1,2,3; Sun, Bainian1,2,3; Sun, Fankai1,2; Xiong, Conghui1,2,3; Chen, Yingquan1,2; Wang, Xuelian1,2
2018-06-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume158Pages:49-64
Abstract

The Late Paleozoic strata are well exposed in Yongchang County, Gansu Province, Northwest China. The strata contain numerous plant fossils. Hence, Yongchang County is a good location to study Paleozoic plants and plate movement. Using well-preserved cordaitean cones and seeds from the lower Permian Taiyuan Formation of Yongchang County, two new species of fossil plants are described, one attributed to the new organ genus Hexianthus (H. shenii sp. nov.) and the other to the seed genus Samaropsis (S. shenii sp. nov.). The micro- and macro-scale features of the cones, including the epidermal features of the bracts and scales, are analyzed in the laboratory. Numerous cordaitean cones with helically arranged bracts and scales (H. shenii sp. nov.) present in the Taiyuan Formation of Yongchang County share similar characteristics with the cordaitean cones which are endemic to the Cathaysian flora. This suggests that the study region was characterized by the Cathaysian flora in the Cisuralian, similar to the Hexi Corridor to the south of the study region. Based on the study of fossil cuticles and their associated plants, the study region of Yongchang County probably had a warm and humid climate during the Cisuralian. In addition, according to the associations between different fossil plants from several localities in Gansu Province (from the Cathaysian flora in the lower Permian to the Cathaysian-Angaran mixed flora in the upper Permian), a possible boundary between the Cathaysian and Angaran floras in Gansu Province can be placed along the Hexi Corridor, which provides important information for the study of floral associations in Northwest China during the Late Paleozoic.

KeywordGansu Province Cisuralian Hexianthus Samaropsis Geological Significance
DOI10.1016/j.jseaes.2018.02.016
Language英语
WOS KeywordCordaitalean Seed Plants ; Grains In-situ ; Reconstruction ; Cones ; Xinjiang ; Conifer ; Basin ; Area
Funding ProjectNational Natural Science Foundation of China[41172022] ; Fundamental Research Funds for the Central Universities[lzujbky-2016-202] ; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[163117]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000431469600004
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/18716
Collection中国科学院南京地质古生物研究所
Corresponding AuthorSun, Bainian
Affiliation1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Gansu, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, 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, Zixi ,Sun, Bainian,Sun, Fankai,et al. Microstructure and significance of cordaitean reproductive organs from the lower Permian of Gansu, Northwest China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,158:49-64.
APA Wang, Zixi ,Sun, Bainian,Sun, Fankai,Xiong, Conghui,Chen, Yingquan,&Wang, Xuelian.(2018).Microstructure and significance of cordaitean reproductive organs from the lower Permian of Gansu, Northwest China.JOURNAL OF ASIAN EARTH SCIENCES,158,49-64.
MLA Wang, Zixi ,et al."Microstructure and significance of cordaitean reproductive organs from the lower Permian of Gansu, Northwest China".JOURNAL OF ASIAN EARTH SCIENCES 158(2018):49-64.
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