KMS Nanjing Institute of Geology and Palaeonotology,CAS
New observations on spicule-like structures from Doushantuo phosphorites at Weng'an, Guizhou Province | |
Yin, LM (尹磊明); Xiao, SH; Yuan, XL (袁训来) | |
2001-11-01 | |
发表期刊 | CHINESE SCIENCE BULLETIN |
ISSN | 1001-6538 |
卷号 | 46期号:21页码:1828-1832 |
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. |
关键词 | Doushantuo Formation Neoproterozoic Guizhou Phosphorite Sponge |
语种 | 英语 |
关键词[WOS] | South China ; Animal Embryos ; Evolution ; Origins ; Preservation ; Microfossils ; Sponges ; Fauna ; Body ; Age |
WOS研究方向 | Science & Technology - Other Topics |
WOS类目 | Multidisciplinary Sciences |
WOS记录号 | WOS:000172469000017 |
出版者 | SCIENCE PRESS |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/22251 |
专题 | 中国科学院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. |
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