New Discoveries of Phaeophycean Fossils in the Early Cambrian, Haikou, Kunming,Yunnan, Southwest China  

云南海口早寒武世褐藻化石新知(英文)

作　　者：徐兆良[1] 

机构地区：[1]中国科学院植物研究所,北京100093

出　　处：《Acta Botanica Sinica》2001年第10期1072-1076,共5页Acta Botanica Sinica（植物学报：英文版）

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina (No .39870 0 5 9)andTheChineseAcademyofSciences (BureauofBiology 45 7andSTZ_1_0 1) .

摘　　要：The paper deals with the new phaeophycean fossils in the Early Cambrian from Chengjiang Biota at Ercai Village of Haikou, Kunming, Yunnan, Southwest China. Three new taxa, Punctatiopsis latifolia gen. et sp. nov., P. simplex gen. et sp. nov. and Vendotaenia cf. antiqua Gnilovskaya axe described here in detail. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution. The fossil genus described here is found to have a close relationship with the living Punctatia based on similar morphology. The results suggest that the Chengjiang Biota in Haikou area of Kunming was living in an intertidal and subtidal seawater environment.主要报道了产自云南海口耳材村早寒武世筇竹寺组玉案山段澄江生物群中的褐藻化石———拟点叶藻(Punctariopsislatifoliagen .etsp .nov .)、简单拟点叶藻 (Punctariopsissimplexgen .etsp .nov.)和古文德带藻 (Vendotaeniacf.antiquaGnilovskaya) 3种。这些化石丰富了澄江生物群物种的多样性 ,为研究该群生物爆发性演化提供了新的证据。同时通过对现生褐藻和褐藻化石形态学的比较研究 ,表明化石属和现代属在系统演化上可能有较密切的亲缘关系 ,并进一步证明了澄江生物群在云南海口地区发生于一个潮间带和亚潮带的海水环境。

关 键 词：Haikou of Yunnan Early Cambrian phaeophycean fossils 

分 类 号：Q914.82[天文地球—古生物学与地层学]