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Cuticle ultrastructure of Pseudofrenelopsis gansuensis: Further taxonomical implications for Cheirolepidiaceae
Guignard, G1,2; Yang, XJ (杨小菊)3; Wang, YD (王永栋)3
Source PublicationCretaceous Research

A study of the cheirolepidiaceous conifer Pseudofrenelopsis gansuensis from the Lower Cretaceous of Wangqing Jilin Province in China was conducted in detail using scanning and transmission electron microscopy techniques. In total, nine ultrastructural features were recognized for the cuticle of this fossil plant, which are helpful in the distinguishing between cuticles of ordinary epidermal cells, subsidiary cells, guard cells and hypodermal cells of the stomatal apparatus. A three dimensional reconstruction of the cuticle ultrastructure was obtained. Pseudofrenelopsis gansuensis is the second species of this genus for which the cuticle ultrastructure has been statistically examined with 30 measurements and estimated confidence interval values. The close comparison of the cuticle ultrastructure characters, including statistical data, among Cheirolepidiaceae and other fossil conifers provides potential evidence of the taxonomic significance of this genus: ten characters are potentially valuable for specific separation, eleven parameters for generic separation and three parameters seem also to be useful for Family determination. The differences in the chemical composition according to preliminary statistical element analyses of the cuticles based on three ratios in two species of Pseudofrenelopsis, P. dalatzensis and P. gansuensis, should also be examined in future studies. (C) 2016 Elsevier Ltd. All rights reserved.

KeywordPseudofrenelopsis Cheirolepidiceae Cuticle Ultrastructure Taxonomy Palaeoecology Eds Analyses
Indexed BySCI
WOS Research AreaGeology ; Paleontology
WOS IDWOS:000393011000003
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Document Type期刊论文
Corresponding AuthorYang, XJ (杨小菊)
Affiliation1.Univ Lyon 1, F-69622 Lyon, France;
2.CNRS, UMR LEHNA 5023, 7-9 Rue Raphael Dubois, F-69622 Villeurbanne, France;
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Guignard, G,Yang, XJ ,Wang, YD . Cuticle ultrastructure of Pseudofrenelopsis gansuensis: Further taxonomical implications for Cheirolepidiaceae[J]. Cretaceous Research,2017,71:24-39.
APA Guignard, G,Yang, XJ ,&Wang, YD .(2017).Cuticle ultrastructure of Pseudofrenelopsis gansuensis: Further taxonomical implications for Cheirolepidiaceae.Cretaceous Research,71,24-39.
MLA Guignard, G,et al."Cuticle ultrastructure of Pseudofrenelopsis gansuensis: Further taxonomical implications for Cheirolepidiaceae".Cretaceous Research 71(2017):24-39.
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