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Morphology and epidermal anatomy of Tricalycites, a winged propagule from the Cretaceous of North America
Zhang, Xiaoqing(张筱青)1,2,3,4; Wang, Yongdong(王永栋)1,2; Dilcher, David L.5,6; Manchester, Steven R.3
2021-03-01
Source PublicationCRETACEOUS RESEARCH
ISSN0195-6671
Volume119Pages:8
Abstract

Tricalycites Hollick is a distinctive winged propagule that has served as a stratigraphic marker in North American Cretaceous floras. However, its affinities have long been uncertain since the original description of this genus in 1895. Our recent re-examination of specimens from major museum collections and from recent fieldwork has allowed for a revised concept of the morphology and the addition of new details of epidermal anatomy. Twenty three specimens were studied from numerous sites, ranging over a broad area of eastern North America including New Jersey, New York, Massachusetts, Rhode Island, Alabama, and Texas. Tricalycites disseminules have often been called winged fruits, but we cannot eliminate the possibility of them being gymnospermous seeds with a wing derived from an associated envelope or cupule. The type species, T. papyraceus, was previously described by Newberry as having one wing with three lobes or three wings, but we observed only one wing with three prominent lobes. Cuticles of Tricalycites were examined for the first time. The wings lack trichome bases and have paracytic to tetracytic stomata. The new observations facilitate a revised circumscription of the genus Tricalycites but still leave the affinities of this plant open for discussion. (C) 2020 Elsevier Ltd. All rights reserved.

KeywordWinged disseminule Cuticle Morphology Alabama New Jersey New York Texas
DOI10.1016/j.cretres.2020.104700
Indexed BySCI
Language英语
WOS KeywordDIVERSITY ; SEEDS
Funding ProjectNational Natural Sciences Foundation of China[41790454] ; National Natural Sciences Foundation of China[41688103] ; CAS[XDB 18000000] ; CAS[XDB26010302] ; CSC[201806340040]
WOS Research AreaGeology ; Paleontology
WOS SubjectGeology ; Paleontology
WOS IDWOS:000607217000007
Funding OrganizationNational Natural Sciences Foundation of China ; CAS ; CSC
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/37726
Collection中国科学院南京地质古生物研究所
Corresponding AuthorWang, Yongdong(王永栋)
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 & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA
4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
5.Indiana Univ, Dept Geol, Bloomington, IN 47405 USA
6.Indiana Geol & Water Survey, 420 North Walnut St, Bloomington, IN 47404 USA
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Zhang, Xiaoqing,Wang, Yongdong,Dilcher, David L.,et al. Morphology and epidermal anatomy of Tricalycites, a winged propagule from the Cretaceous of North America[J]. CRETACEOUS RESEARCH,2021,119:8.
APA Zhang, Xiaoqing,Wang, Yongdong,Dilcher, David L.,&Manchester, Steven R..(2021).Morphology and epidermal anatomy of Tricalycites, a winged propagule from the Cretaceous of North America.CRETACEOUS RESEARCH,119,8.
MLA Zhang, Xiaoqing,et al."Morphology and epidermal anatomy of Tricalycites, a winged propagule from the Cretaceous of North America".CRETACEOUS RESEARCH 119(2021):8.
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