A new Early Cretaceous Ginkgo ovulate organ with associated leaves from Inner Mongolia, China and its evolutionary significance

doi:10.1016/j.revpalbo.2017.05.007

	A new Early Cretaceous Ginkgo ovulate organ with associated leaves from Inner Mongolia, China and its evolutionary significance
	Xu, XH; Yang, LY; Sun, BN; Wang, YD (王永栋); Chen, P
	2017
发表期刊	Review of Palaeobotany and Palynology
ISSN	0034-6667
卷号	244 页码:163-181
摘要	A well-preserved Ginkgo ovulate organ and its associated leaves are described from the Early Cretaceous Huolinhe Formation of the Huolinhe Basin, Inner Mongolia Autonomous Region, China. This is the first discovery of the Ginkgo ovulate organ in the Huolinhe Basin. This ovulate organ has a cluster of (up to 6) ovules and an empty collar at the apex of a peduncle. The ovules are each seated in a collar, and five developed ovules are directly attached to the peduncle and one aborted ovule is terminated in a short pedicel. Detailed comparisons between the new Ginkgo organ and other reliable Ginkgo ovulate organs reveal that the new organ differs from any previously described organ. A new species, Ginkgo neimengensis sp. nov., is established. Leaves of Ginkgo coriacea associated with G. neimengensis are also described in detail. The close association and similarities of the cuticular structures between G. neimengensis and G. coriacea suggest that they were probably produced by the same plant. The present study further corroborates that the modern Ginkgo type ovulate organ first appeared in the Early Cretaceous and also provides new evidence for the Ginkgo evolutionary history. (C) 2017 Elsevier B.V. All rights reserved.
关键词	Ginkgo Ovulate organ The Early Cretaceous Inner Mongolia China
DOI	10.1016/j.revpalbo.2017.05.007
收录类别	SCI
语种	英语
WOS研究方向	Plant Sciences ; Paleontology
WOS类目	Plant Sciences ; Paleontology
WOS记录号	WOS:000408289300014
出版者	ELSEVIER SCIENCE BV
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13353
专题	中国科学院南京地质古生物研究所其他
通讯作者	Xu, XH
推荐引用方式 GB/T 7714	Xu, XH,Yang, LY,Sun, BN,et al. A new Early Cretaceous Ginkgo ovulate organ with associated leaves from Inner Mongolia, China and its evolutionary significance[J]. Review of Palaeobotany and Palynology,2017,244:163-181.
APA	Xu, XH,Yang, LY,Sun, BN,Wang, YD ,&Chen, P.(2017).A new Early Cretaceous Ginkgo ovulate organ with associated leaves from Inner Mongolia, China and its evolutionary significance.Review of Palaeobotany and Palynology,244,163-181.
MLA	Xu, XH,et al."A new Early Cretaceous Ginkgo ovulate organ with associated leaves from Inner Mongolia, China and its evolutionary significance".Review of Palaeobotany and Palynology 244(2017):163-181.