First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography

doi:10.1111/jse.12435

	First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography
	Jia, Lin-Bo1,3 ; Su, Tao 2,3; Huang, Yong-Jiang 1; Wu, Fei-Xiang 4; Deng, Tao5 ; Zhou, Zhe-Kun1,2
通讯作者	Su, Tao(sutao@xtbg.org.cn) ; Zhou, Zhe-Kun(zhouzk@mail.kib.ac.cn)
	2019-03-01
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	57 期号:2 页码:94-104
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.
关键词	extinct plants paleobotany phytogeography Tibet
DOI	10.1111/jse.12435
收录类别	SCI
语种	英语
WOS记录号	WOS:000462163000002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/67717
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Su, Tao; Zhou, Zhe-Kun
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650204, Yunnan, Peoples R China 2.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Jia, Lin-Bo,Su, Tao,Huang, Yong-Jiang,et al. First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2019,57(2):94-104.
APA	Jia, Lin-Bo,Su, Tao,Huang, Yong-Jiang,Wu, Fei-Xiang,Deng, Tao,&Zhou, Zhe-Kun.(2019).First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography.JOURNAL OF SYSTEMATICS AND EVOLUTION,57(2),94-104.
MLA	Jia, Lin-Bo,et al."First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography".JOURNAL OF SYSTEMATICS AND EVOLUTION 57.2(2019):94-104.

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