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First macrofossil record of Icacinaceae in East Asia (early Oligocene, Wenshan Basin) and its ecological implications
Del Rio,Cedric; Huang,Jian; Stull,Gregory W.; Allemand,Remi; Zhou,Zhe-Kun; Su,Tao
2022
发表期刊JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
卷号60期号:2页码:445-455
摘要Icacinaceae are well represented in the modern tropical flora of East Asia, but this family has no confirmed macrofossils from this region. Most of the unambiguous fossils (e.g., endocarps) are from the Paleogene of North America and Europe, where the family is no longer present. Here we report a fossil endocarp of the liana genus Iodes from the Oligocene Wenshan flora, southwestern China. The fossil is relatively large (ca. 20 mm length, 11 mm width) and documents a vascular bundle inside the endocarp wall, a pattern of ridges enclosing few areoles, and an asymmetrical apex and rounded base. On the basis of these characteristics, we described a new species, Iodes elliptica, which represents the first Icacinaceae fruit fossil record from Asia. This fossil, consistent with recent reports of Iodes pollen from the Eocene of Hainan, indicates a long-standing presence of the genus in SE Asia, dating back to the Paleogene. Based on the climatic data of modern Iodes, and other fossil occurrences from Wenshan, we hypothesize that the climate in the region was subtropical during the Oligocene, supporting a rainforest, with an overall mixed regional flora of subtropical and tropical elements.
关键词China endocarps Icacinaceae Iodes Oligocene paleoclimate NORTH-AMERICA SOUTHWEST CHINA FOSSIL RECORD EOCENE FRUITS MIOCENE PALEOCENE WOOD PALEOGEOGRAPHY HEMISPHERE
DOI10.1111/jse.12700
WOS记录号WOS:000617309000001
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/73631
专题中国科学院昆明植物研究所
作者单位1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Core Bot Gardens, Ctr Plant Ecol, Mengla 666303, Yunnan, Peoples R China
3.Stull, Gregory W.] Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China
4.Stull, Gregory W.] Smithsonian Inst, Dept Bot, Washington, DC 20013 USA
5.Univ Toronto Scarborough, Dept Anthropol, Toronto, ON M5H 2N2, Canada
6.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650204, Yunnan, Peoples R China
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Del Rio,Cedric,Huang,Jian,Stull,Gregory W.,et al. First macrofossil record of Icacinaceae in East Asia (early Oligocene, Wenshan Basin) and its ecological implications[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2022,60(2):445-455.
APA Del Rio,Cedric,Huang,Jian,Stull,Gregory W.,Allemand,Remi,Zhou,Zhe-Kun,&Su,Tao.(2022).First macrofossil record of Icacinaceae in East Asia (early Oligocene, Wenshan Basin) and its ecological implications.JOURNAL OF SYSTEMATICS AND EVOLUTION,60(2),445-455.
MLA Del Rio,Cedric,et al."First macrofossil record of Icacinaceae in East Asia (early Oligocene, Wenshan Basin) and its ecological implications".JOURNAL OF SYSTEMATICS AND EVOLUTION 60.2(2022):445-455.
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