A new species of Elatides from the Lower Cretaceous in Shandong province, Eastern China and its geographic significance

doi:10.1016/j.cretres.2017.11.022

	A new species of Elatides from the Lower Cretaceous in Shandong province, Eastern China and its geographic significance
	Jin, Pei-Hong 1,2,3; Dong, Jun-Ling 1,2; Wang, Zi-Xi 1,2; Yuan, Xiu-Cai 1,2; Hua, Yi-Fan 1,2; Du, Bao-Xia 1,2; Sun, Bai-Nian 1,2,3
刊名	CRETACEOUS RESEARCH
	2018-05-01
卷号	85 页码:109-127
关键词	Elatides Lower Cretaceous Macro-micro morphology Survival environment Biogeographic evolution
ISSN号	0195-6671
DOI	10.1016/j.cretres.2017.11.022
文献子类	Article
英文摘要	Elatides, an ancient extinct conifer, is of great significance for studying the composition of forest vegetation in the Northern Hemisphere during the Mesozoic. A new Elatides species, Elatides laiyangensis sp. nov., has been described and diagnosed from the Lower Cretaceous Laiyang Formation in Shandong Province, China. The details of the gross morphology and cuticular structure of the new species have been studied. The significant characters of the studied fossils can be concluded as follows: the seed cones are ovate or round, and the middle part of the cone is the widest. It tapers slightly near the apex; the bract scale complexes are numerous, broad-ovate or triangular-ovate, helically and imbricately arranged on the cone axis and compactly in each other, with an acuminate and slightly curved inward apex; the epidermal cells on the apex and middle part of bracts are irregular polygonal, and long-rectangular or long-rectangular on the side edge and basal; and the stomata complexes are predominantly on the apex and middle part of the adaxial surface. These features are much similar to those of the extant Cunninghamia, which provides further support for a phylogenetic relationship between Elatides and Cunninghamia. Since the morphological (macrostructure and microstructure) features of this species differ from any known species in the fossil records, it can be considered as a new species of Elatides. Associated leafy branches are also comparable to those of Cunninghamia lanceolata in shape and cuticular structure. The geographical distribution of Elatides through time is closely related to the prosperity-decline of the genus, geological events in Mesozoic and the trends of global paleoenvironmental change. Therefore, it can be inferred that this genus may possess high sensitivity to climate change, especially to temperature. Furthermore, the occurrences of Elatides seed cones and foliage shoots from the Laiyang Basin provide new information on the geographic distribution of Elatides in China, which indicates that Shandong should be the adaptive way through which the genus was transported from Hebei (Northern China) to Zhejiang and Fujian (Southern China). (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	OCEANIC ANOXIC EVENT ; JURASSIC MASS EXTINCTION ; CARBON-ISOTOPE ; ATMOSPHERIC CO2 ; SEA-LEVEL ; PHANEROZOIC TIME ; STOMATAL CHARACTERS ; PYRITE FORMATION ; GANSU PROVINCE ; CLIMATE-CHANGE
WOS研究方向	Geology ; Paleontology
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS记录号	WOS:000429892000008
资助机构	National Natural Science Foundation of China(41172022 ; National Natural Science Foundation of China(41172022 ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; 41402007) ; 41402007) ; 2017-it27) ; 2017-it27) ; National Natural Science Foundation of China(41172022 ; National Natural Science Foundation of China(41172022 ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; 41402007) ; 41402007) ; 2017-it27) ; 2017-it27) ; National Natural Science Foundation of China(41172022 ; National Natural Science Foundation of China(41172022 ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; 41402007) ; 41402007) ; 2017-it27) ; 2017-it27) ; National Natural Science Foundation of China(41172022 ; National Natural Science Foundation of China(41172022 ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Funds of Key Laboratory of Petroleum Resources, Gansu Province(SZDKFB20150603) ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; Fundamental Research Funds for the Central Universities(lzujbky-2016-201 ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; National Undergraduate Innovation and Entrepreneurship Project(201610730136) ; 41402007) ; 41402007) ; 2017-it27) ; 2017-it27)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/83196]
专题	中国科学院地质与地球物理研究所
通讯作者	Sun, Bai-Nian
作者单位	1.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, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Jin, Pei-Hong,Dong, Jun-Ling,Wang, Zi-Xi,et al. A new species of Elatides from the Lower Cretaceous in Shandong province, Eastern China and its geographic significance[J]. CRETACEOUS RESEARCH,2018,85:109-127.
APA	Jin, Pei-Hong.,Dong, Jun-Ling.,Wang, Zi-Xi.,Yuan, Xiu-Cai.,Hua, Yi-Fan.,...&Sun, Bai-Nian.(2018).A new species of Elatides from the Lower Cretaceous in Shandong province, Eastern China and its geographic significance.CRETACEOUS RESEARCH,85,109-127.
MLA	Jin, Pei-Hong,et al."A new species of Elatides from the Lower Cretaceous in Shandong province, Eastern China and its geographic significance".CRETACEOUS RESEARCH 85(2018):109-127.