中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
New observations on spicule-like structures from Doushantuo phosphorites at Weng'an, Guizhou Province

文献类型:期刊论文

作者Yin, LM (尹磊明); Xiao, SH; Yuan, XL (袁训来)
刊名CHINESE SCIENCE BULLETIN
出版日期2001-11-01
卷号46期号:21页码:1828-1832
关键词Doushantuo Formation Neoproterozoic Guizhou Phosphorite Sponge
ISSN号1001-6538
英文摘要

Doushantuo phosphorites at Weng'an, Guizhou Province, provide a unique opportunity for the study of early evolution of multicellular organisms, including metazoans. Our light microscope and SEM observations, however, do not substantiate a sponge spicule interpretation of spicular structures. No convincing axial canals have been seen in the observed spicule population. Instead, the coexistence of some monaxonal spicules with clearly diagenetic crystal fascicles and dumbbells suggest that these monaxons may also be diagenetic in origin. Our preliminary EDS analyses detect no significant silicon in spicule-containing intraclasts (including abiotic clasts and fragments of sphaeromorphic acritarchs and algal thalli), that contain abundant monaxonal spicular structures. We, therefore, believe that the evidence for a sponge spicule interpretation of the Doushantuo spicular structures are at best ambiguous at present; these alleged sponge spicules are indistinguishable from coexistent diagenetic crystals.

WOS关键词South China ; Animal Embryos ; Evolution ; Origins ; Preservation ; Microfossils ; Sponges ; Fauna ; Body ; Age
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000172469000017
出版者SCIENCE PRESS
源URL[http://ir.nigpas.ac.cn/handle/332004/22250]  
专题中国科学院南京地质古生物研究所
南京地质古生物研究所_其他
通讯作者Yin, LM (尹磊明)
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China
2.Tulane Univ, Dept Geol, New Orleans, LA 70118 USA
推荐引用方式
GB/T 7714
Yin, LM ,Xiao, SH,Yuan, XL . New observations on spicule-like structures from Doushantuo phosphorites at Weng'an, Guizhou Province[J]. CHINESE SCIENCE BULLETIN,2001,46(21):1828-1832.
APA Yin, LM ,Xiao, SH,&Yuan, XL .(2001).New observations on spicule-like structures from Doushantuo phosphorites at Weng'an, Guizhou Province.CHINESE SCIENCE BULLETIN,46(21),1828-1832.
MLA Yin, LM ,et al."New observations on spicule-like structures from Doushantuo phosphorites at Weng'an, Guizhou Province".CHINESE SCIENCE BULLETIN 46.21(2001):1828-1832.

入库方式: OAI收割

来源:南京地质古生物研究所

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