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Umaltolepis and associated Pseudotorellia leaves from the Middle Jurassic of Yima in Henan Province, Central China
Dong, Chong (董重)1,2; Zhou, Zhiyan (周志炎)1,2; Zhang, Bole3; Wang, Yongdong (王永栋)1,2; Shi, Gongle (史恭乐)1,2
2019-12-01
Source PublicationREVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN0034-6667
Volume271Pages:104-111
Abstract

The seed-bearing structure Umaltolepis is considered to be produced by the same plants of Pseudotorellia leaves based on their dose association in the same fossil bearing horizon and similarities in their cuticles, especially in stomatal structures. In this paper we describe new material of Umaltolepis and Pseudotorellia from the Middle Jurassic Yima Formation in Yima, Henan Province, Central China. Umaltolepis yimaensis sp. nov. is an umbrella-like, ovate to elliptical, four-lobed cupule. The cupule lobes are resinous with thick outer cuticle, and scattered, more or less longitudinally oriented stomata. Leaves of Pseudotorellia yimaensis sp. nov. are narrowly oblanceolate, with two veins entering leaf base and dichotomizing once or twice to produce 4-6 parallel veins that converge and join together near leaf apex. The leaves have fusiform resin bodies between neighboring veins, and thick cuticles with scattered, longitudinally oriented stomata on the abaxial side. The stomata of U. yimaensis and P. yimaensis are very similar, both consisting of sunken guard cells surrounding by specialized lateral subsidiary cells and unspecialized polar cells, and both have two bow-shaped cuticular ridges flanking the stomatal pit and a butter-fly like flange between guard and subsidiary cells. The co-occurrence of U. yimaensis and P. yimaensis in the Yima Formation and their similarities in cuticular structures and in the presence of resin bodies further confirm that Umaltolepis and Pseudotorellia are produced by the same group of plants. These fossils also provide new evidence for a high diversity of ginkgophyte reproductive organs in the Middle Jurassic of Central China. (C) 2019 Elsevier B.V. All rights reserved.

KeywordUmaltolepis Pseudotorellia Middle Jurassic Ginkgophyte Yima Formation China
DOI10.1016/j.revpalbo.2019.104111
Language英语
WOS KeywordFLORIN GINKGOALES ; PHOENICOPSIS ; PLANTS ; GEN. ; NOV
Funding ProjectNational Natural Science Foundation of China[41802014] ; National Natural Science Foundation of China[41790454] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; State Key Laboratory of Palaeobiology and Stratigraphy[20162104]
WOS Research AreaPlant Sciences ; Paleontology
WOS SubjectPlant Sciences ; Paleontology
WOS IDWOS:000503828300015
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; State Key Laboratory of Palaeobiology and Stratigraphy
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29538
Collection中国科学院南京地质古生物研究所
Corresponding AuthorShi, Gongle (史恭乐)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Jiangsu, Peoples R China
3.Qingdao Res Inst Geotech Prospecting & Surveying, Qingdao 266030, Shandong, 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
Dong, Chong ,Zhou, Zhiyan ,Zhang, Bole,et al. Umaltolepis and associated Pseudotorellia leaves from the Middle Jurassic of Yima in Henan Province, Central China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2019,271:104-111.
APA Dong, Chong ,Zhou, Zhiyan ,Zhang, Bole,Wang, Yongdong ,&Shi, Gongle .(2019).Umaltolepis and associated Pseudotorellia leaves from the Middle Jurassic of Yima in Henan Province, Central China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,271,104-111.
MLA Dong, Chong ,et al."Umaltolepis and associated Pseudotorellia leaves from the Middle Jurassic of Yima in Henan Province, Central China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 271(2019):104-111.
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