firstfossilrecordofcedrelospermumulmaceaefromtheqinghaitibetanplateauimplicationsformorphologicalevolutionandbiogeography

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	firstfossilrecordofcedrelospermumulmaceaefromtheqinghaitibetanplateauimplicationsformorphologicalevolutionandbiogeography
	Jia Linbo 1; Su Tao 2; Huang Yongjiang 1; Wu Feixiang3 ; Deng Tao3 ; Zhou Zhekun 1
	2019
发表期刊	journalofsystematicsandevolution
ISSN	1674-4918
卷号	57 期号:2 页码:94
摘要	cedrelospermum saporta is an extinct genus in the ulmaceae with abundant fossil records in north america and europe. however, so far, fossil records of this genus from asia are sparse, which limits the interpretations of the morphological evolution and biogeographical history of the genus. here we report well-preserved fruits (cedrelospermum tibeticum sp. nov.) and a leaf (cedrelospermum sp.) of cedrelospermum from the upper oligocene lunpola and nyima basins in the qinghai-tibetan plateau (qtp). this is the first fossil record of cedrelospermum in the qtp, showing that this genus grew in this region during the late oligocene. cedrelospermum tibeticum fruits are double-winged, morphologically similar to the eocene and oligocene double-winged cedrelospermum species from north america. this supports the hypothesis that cedrelospermum migrated to asia from north america by way of the bering land bridge. given that cedrelospermum was a typical element of northern hemispheric flora in the paleogene and neogene, the presence of this genus indicates that the central region of the qtp was phytogeographically linked with other parts of the northern hemisphere during the late oligocene. the morphological observations of c. tibeticum fruits and other double-winged cedrelospermum fruits suggest an evolutionary trend from obtuse to acute apex for the primary wing. cedrelospermum tibeticum likely had warm and wet climatic requirements. this type of an environment possibly existed in the central qtp in the late oligocene, thereby supporting the survival of c. tibeticum.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/10532
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院昆明植物研究所 2.中国科学院西双版纳热带植物园 3.中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Jia Linbo,Su Tao,Huang Yongjiang,et al. firstfossilrecordofcedrelospermumulmaceaefromtheqinghaitibetanplateauimplicationsformorphologicalevolutionandbiogeography[J]. journalofsystematicsandevolution,2019,57(2):94.
APA	Jia Linbo,Su Tao,Huang Yongjiang,Wu Feixiang,Deng Tao,&Zhou Zhekun.(2019).firstfossilrecordofcedrelospermumulmaceaefromtheqinghaitibetanplateauimplicationsformorphologicalevolutionandbiogeography.journalofsystematicsandevolution,57(2),94.
MLA	Jia Linbo,et al."firstfossilrecordofcedrelospermumulmaceaefromtheqinghaitibetanplateauimplicationsformorphologicalevolutionandbiogeography".journalofsystematicsandevolution 57.2(2019):94.

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First fossil record （7946KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载