New coryphoid fossil palm leaves (Arecaceae: Coryphoideae) from the Eocene Changchang Basin of Hainan Island, South China

New coryphoid fossil palm leaves (Arecaceae: Coryphoideae) from the Eocene Changchang Basin of Hainan Island, South China
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海南岛始新世长昌盆地新珊瑚化石棕榈叶(槟榔科:Coryphoideae)

DOI:
10.1007/s11430-013-4681-7
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发表时间:
2013-08
期刊:
Science China Earth Sciences
影响因子:
--
通讯作者:
Jin JianHua
Jin JianHua
中科院分区:
其他
文献类型:
--
作者:
Zhou WenJun;Liu XiaoYan;Xu QingQing;Huang KangYou;Jin JianHua

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现代棕榈树种类繁多,广泛分布在热带和亚热带地区,尤其是热带雨林。然而,大多数棕榈树化石记录都来自相对较高纬度的地区。本文报道了采自中国南部海南岛始新世长昌盆地的7种伞状棕榈科植物。这些都是沙棘不对称球藻。Nov.、粗壮链霉菌S.robostussp.Nov.、细叶链霉菌S.tenufoliussp.Nov.、S.szeiguo、S.ChangchagnenssGuo、Livistonasp.和Amesoneuronsp.根据叶的形态特征,它们可归为伞形亚科的成员。在海南岛现存的植物区系中,只有三种龙须草的叶具有鳞片状叶。这些棕榈树化石表明,在始新世,海南岛的植物群中包含了多种伞状棕榈树,这与恢复中国南部的古气候有一定的关系。
Modern palms are diverse and widespread in the tropics and subtropics, especially the tropical rainforests. However, most fossil palm records have been reported from regions of relatively higher latitude. In this paper seven species of coryphoid palm from the Eocene Changchang Basin of Hainan Island of South China are reported. These areSabalites asymmetricussp. nov.,S. robustussp. nov.,S. tenufoliussp. nov.,S. szeiGuo,S. changchagnensisGuo,Livistonasp., andAmesoneuronsp. According to leaf morphological characteristics, they can be classified as members of the subfamily Coryphoideae. In extant flora of Hainan Island, only three species ofLivistonahave costapalmate leaves. These palm fossils indicate that, during the Eocene, flora in Hainan Island included a diversity of coryphoid palms, which have some bearings on the reconstruction of the palaeoclimate of South China.
DOI: 10.3133/pp92
发表时间: --
期刊: --
影响因子: --
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