The first megafossil record of Goniophlebium (Polypodiaceae) from the Middle Miocene of Asia and its paleoecological implications
Xu, Cong-Li1,5; Huang, Jian1,5; Su, Tao1; Zhang, Xian-Chun3; Li, Shu-Feng1,4; Zhou, Zhe-Kun1,2,4
2017-09-01
发表期刊PALAEOWORLD
ISSN1871-174X
卷号26期号:3页码:543-552
摘要The first megafossil record of Goniophlebium macrosorum Xu et Zhou n. sp., is described from the Middle Miocene Climate Optimum (MMCO) (15.2-16.5 Ma) sediments in Wenshan, southeastern Yunnan, China. The fossils are with well-preserved leaf pinnae and in situ spores, and are represented by pinnatifid fronds and crenate pinna margins, with oval sori almost covering 3/5 area of areolae on each side of the main costa. In situ spores have verrucate outer ornamentation, and are elliptical in polar view and bean-shaped in equatorial view. The venation is characterized by anastomosing veins with simple included veinlets forming 2-3 order pentagonal areolae. All these morphological characters confirm the assignment of this species to the genus Goniophlebium (Polypodiaceae), now is distributed in southeastern Asia to Australia. Among living species, G. macrosorum shows the closest morphological affinity to the extant Goniophlebium subamoenum. The discovery of G. macrosorum suggests that Goniophlebium occurred in this region no later than the Middle Miocene. Moreover, the result of this study is consistent with the paleoenvironment of Wenshan flora as reconstructed in previous research, which concluded that modern evergreen broadleaved forests with complex ecological structure have been possibly established in southwestern China since at least 15 Ma. (C) 2017 Published by Elsevier B.V. on behalf of Nanjing Institute of Geology and Palaeontology, CAS.
关键词Goniophlebium Polypodiaceae Miocene Fern Fossil Yunnan
收录类别SCI
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/54899
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
作者单位1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China
3.Chinese Acad Sci, State Key Lab Systemat & Evolutionary Bot, Inst Bot, Beijing 100093, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Xu, Cong-Li,Huang, Jian,Su, Tao,et al. The first megafossil record of Goniophlebium (Polypodiaceae) from the Middle Miocene of Asia and its paleoecological implications[J]. PALAEOWORLD,2017,26(3):543-552.
APA Xu, Cong-Li,Huang, Jian,Su, Tao,Zhang, Xian-Chun,Li, Shu-Feng,&Zhou, Zhe-Kun.(2017).The first megafossil record of Goniophlebium (Polypodiaceae) from the Middle Miocene of Asia and its paleoecological implications.PALAEOWORLD,26(3),543-552.
MLA Xu, Cong-Li,et al."The first megafossil record of Goniophlebium (Polypodiaceae) from the Middle Miocene of Asia and its paleoecological implications".PALAEOWORLD 26.3(2017):543-552.
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