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An early Oligocene occurrence of the palaeoendemic genus Dipteronia (Sapindaceae) from Southwest China
Ding, Wen-Na; Huang, Jian; Su, Tao; Xing, Yao-Wu; Zhou, Zhe-Kun
2018
Source PublicationREVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN0034-6667
Volume249Issue:xPages:16-23
AbstractPalaeoendemic plants, whose past geographical distribution was much larger than their present distribution ranges, play an important role in reconstructing biogeographical events, and in tracking floristic relationships among continents throughout geological time. Improving knowledge about their geographical histories helps to understand the evolution of biodiversity under palaeoenvironmental changes. Here, we report the first fossil record of Dipteronia from East Asia, namely Dipteronia brownii McClain et Manchester, based on diagnostic winged fruit remains from the Rupelian (c. 32 /- 1 Ma) of the Liihe Basin in southwestern China. The fossil species is characterized by (i) a samaroid mericarp, with an orbicular wing, (ii) a primary vein extending from the attachment scar, and ramifying into secondary and tertiary veins that radiate out from the seed body area and dichotomize toward the mericarp. Dipteronia was widely distributed in the Northern Hemisphere during the Palaeogene and is now endemic to central and southwestern China with two extant species. This new finding significantly expands the historical distribution of Dipteronia into China by the early Oligocene, and its present-day endemism is apparently the result of extirpation from North America and the higher latitudes of Asia associated with Cenozoic climatic changes. (C) 2017 Elsevier B.V. All rights reserved.
Department其他
KeywordNorthern-hemisphere Climate Transition Tertiary Climates Tibetan Plateau Plant Endemism High-latitudes Eastern Asia Eocene Disjunctions America
Subject AreaPlant Sciences ; Paleontology
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10794
Collection古生态研究组
Recommended Citation
GB/T 7714
Ding, Wen-Na,Huang, Jian,Su, Tao,et al. An early Oligocene occurrence of the palaeoendemic genus Dipteronia (Sapindaceae) from Southwest China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2018,249(x):16-23.
APA Ding, Wen-Na,Huang, Jian,Su, Tao,Xing, Yao-Wu,&Zhou, Zhe-Kun.(2018).An early Oligocene occurrence of the palaeoendemic genus Dipteronia (Sapindaceae) from Southwest China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,249(x),16-23.
MLA Ding, Wen-Na,et al."An early Oligocene occurrence of the palaeoendemic genus Dipteronia (Sapindaceae) from Southwest China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 249.x(2018):16-23.
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