A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China

doi:10.1186/s12862-019-1569-y

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	A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China
	Yang, Yong ; Wang, Yingwei 1; Ferguson, David Kay 2
刊名	BMC EVOLUTIONARY BIOLOGY
	2020
卷号	20 期号:1
关键词	China Diversity Ecology Evolution Ephedraceae Gnetophytes Jiufotang Formation Lower Cretaceous
ISSN号	1471-2148
DOI	10.1186/s12862-019-1569-y
文献子类	Article
英文摘要	Background The evolution of the Jehol Biota of western Liaoning in China includes three phases, initiation in the Dabeigou phase, radiation in the Yixian phase, and decline in the Jiufotang phase. Numerous ephedroid macrofossils were reported from the Lower Cretaceous Yixian Formation. However, so far none has been found in the younger Jiufotang Formation (ca. 120.3 Ma) of western Liaoning. Results Here we report a new species Jianchangia verticillata gen. et sp. nov. with unusual morphology from the Lower Cretaceous of the Jiufotang Formation, Lamadong Village, Jianchang County, Liaoning. This species is the first record of gnetophytes from the Jiufotang Formation. It is similar to other ephedroid species from the Yixian Formation in possessing linear leaves with parallel veins, jointed shoots with swollen nodes and longitudinally furrowed internodes, and ovulate cones possessing two whorls of bracts enclosing two chlamydosperms, but differs from all known species by the ovulate cone having multiple fine linear verticillate bracts. Conclusions This study expands our knowledge about the diversity of early gnetophytes in the Lower Cretaceous, and demonstrates the lineage continuity of gnetophytes from the Yixian Formation to the younger Jiufotang Formation.
学科主题	Evolutionary Biology ; Genetics & Heredity
出版地	LONDON
WOS关键词	EVIDENCE UNVEILING EVOLUTION ; SP-NOV ; YIXIAN FORMATION ; GNETALES ; GNETOPHYTES ; DIVERSITY ; ONTOGENY ; SEEDS ; GEN. ; EPHEDRACEAE
WOS研究方向	Evolutionary Biology ; Genetics & Heredity
语种	英语
出版者	BMC
WOS记录号	WOS:000513931600001
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470301, 31770211]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21905]
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Beijing Bot Garden, Inst Bot, Beijing 100093, Peoples R China 3.Univ Vienna, Dept Paleontol, A-1090 Vienna, Austria
推荐引用方式 GB/T 7714	Yang, Yong,Wang, Yingwei,Ferguson, David Kay. A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China[J]. BMC EVOLUTIONARY BIOLOGY,2020,20(1).
APA	Yang, Yong,Wang, Yingwei,&Ferguson, David Kay.(2020).A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China.BMC EVOLUTIONARY BIOLOGY,20(1).
MLA	Yang, Yong,et al."A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China".BMC EVOLUTIONARY BIOLOGY 20.1(2020).