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Wood decay of Xenoxylon yunnanensis Feng sp nov from the Middle Jurassic of Yunnan Province, China
Feng, Zhuo1,2; Wei, Hai-Bo1; Wang, Chun-Ling3; Chen, Yu-Xuan1; Shen, Jia-Jia1; Yang, Ji-Yuan1
2015-09-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume433Pages:60-70
AbstractA permineralised gymnosperm wood, Xenoxylon yunnanensis Feng sp. nov., is described from the Middle Jurassic Shaximiao Formation in Huize County, Yunnan Province, Southwest China. The pycnoxylic wood consists of thick-walled tracheids and thin-walled rays. It is characterised by uniseriate, contiguous, compressed bordered pits on the radial walls of tracheids, and one large simple pit in each cross-field. Growth rings exhibit narrow late-wood. The mean sensitivity of analysis of 25 growth rings is 0.2, suggesting that a climate with abundant rainfall and weak seasonality could have prevailed in Yunnan, at least locally, during the Middle Jurassic. The outer portion of the wood is largely decayed, and shows poorly preserved cells lacking details. Decayed tracheids displaying various features, including removal of middle lamellae, separations of secondary walls, presence of thickened corners and appositions, are recognised as cell reactions to fungal activity. Irregularly distributed micro-cavities are formed by complete decomposition of tracheids and rays in the wood. Abundant fungal remains occurring in the wood generally consist of multiple branched hyphae. These fungal hyphae are either confined to individual cell lumens or extend through adjacent cells. Although the probable reproductive structure and typical clamp connection are very rarely observed with few septate hyphae, the affinities of these fungal hyphae are somewhat obscure. Nevertheless, our study sheds light on the palaeoecology of Middle Jurassic terrestrial ecosystems of Southwest China. (C) 2015 Elsevier B.V. All rights reserved.
KeywordFossil wood Saprophytic Xenoxylon yunnanensis Feng Plant-fungal interaction Jurassic
DOI10.1016/j.palaeo.2015.05.021
Language英语
WOS KeywordGENUS XENOXYLON ; FOSSIL WOOD ; PALEOCLIMATIC IMPLICATIONS ; CLAMP CONNECTIONS ; LIAONING PROVINCE ; ALEXANDER ISLAND ; PALEOZOIC FUNGI ; GROWTH RINGS ; TREE GROWTH ; ANTARCTICA
Funding ProjectNational Basic Research Program of China (973 Program)[2012CB821901] ; National Natural Science Foundation of China[41172006] ; National Natural Science Foundation of China[41422201] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[133104] ; Program for Excellent Young Talents, Yunnan University
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000358466400005
Funding OrganizationNational Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS ; Program for Excellent Young Talents, Yunnan University
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/11972
Collection中国科学院南京地质古生物研究所
Corresponding AuthorFeng, Zhuo
Affiliation1.Yunnan Univ, Yunnan Key Lab Palaeobiol, Kunming 650091, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
3.Yuxi Museum, Yuxi 653100, 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
Feng, Zhuo,Wei, Hai-Bo,Wang, Chun-Ling,et al. Wood decay of Xenoxylon yunnanensis Feng sp nov from the Middle Jurassic of Yunnan Province, China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2015,433:60-70.
APA Feng, Zhuo,Wei, Hai-Bo,Wang, Chun-Ling,Chen, Yu-Xuan,Shen, Jia-Jia,&Yang, Ji-Yuan.(2015).Wood decay of Xenoxylon yunnanensis Feng sp nov from the Middle Jurassic of Yunnan Province, China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,433,60-70.
MLA Feng, Zhuo,et al."Wood decay of Xenoxylon yunnanensis Feng sp nov from the Middle Jurassic of Yunnan Province, China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 433(2015):60-70.
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