| 陕西新元古代末期奇异骨骼化石新发现及其意义 |
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| 引用本文：华洪,张录易,谢从瑞.2002.陕西新元古代末期奇异骨骼化石新发现及其意义[J].地球学报,23(5):387-394. |
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| 基金项目:国家自然科学基金项目(49772081)，科学技术部“国家重点基础研究发展规划”项目(G2000077700)，中国科学院知识创新工程
(Kzcx2116)，国土资源部国际合作和科技司自由探索项目(2000438)，教育部骨干教师计划 |
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| 中文摘要:陕西宁强新元古代末期灯影组高家山段上部发现与Cloudina,Sinotubulites等管状动物骨骼化石共生的大量微体奇异骨骼化石，其中的一些似与寒武纪早期的小壳化石有一定的亲缘，如形态奇特的铆钉状化石、腹足类化石等，证实寒武纪与前寒武纪生物界之间存在明显的连续性；奇异骨骼与陡山沱期生物也存在一定的相似性，如一些分枝的管状化石，这一化石组合具有承前启后的作用。该组合包含了可能的矿化后生藻类（具各种分枝类型）、矿化的蓝绿藻类化石等。种种迹象表明，在新元古代末期整个生物界发生了一次强烈的生物矿化事件，这一发现弥补了国内外新元古代末期矿化后生植物资料的空缺；磷酸盐化球状化石的研究已成为国内外研究的热点，本文所展示的球状化石由于形态多样，数量众多，内部结构各异，对其进行深入研究，可望在后生动物起源和早期演化研究方面取得突破。 |
| 中文关键词:奇异骨骼化石 新元古代末期 高家山生物群 |
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| The New Discovery of Peculiar Skeleton Fossils from the Uppermost Neoproterozoic Strata in South Shaanxi and Its Significance |
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| Abstract:Apart from the tubular skeleton fossils such as Cloudina and Sinotubulites, a diversity of peculiar microskeleton fossils was found from the residue of carbonate rocks in upper Gaojiashan Member of the Neoproterozoic Dengying Formation in Ningjiang County, Shaanxi Province. It is thought that some fossils might have affinity with the Early Cambrian small shelly fossils, such as the strange rivet like fossils and possible gastropoda like fossils, presumably indicating the coherence of biota across the Precambrian-Cambrian boundary. It is probable that some may be biomineralized metaphyte (with various kinds of branching style) and blue green algae, resulting from an extensive biomineralization event at the end of Neoproterozoic. It is also conceivable that various globular fossils within this fossil assemblage may contribute greatly to the study of the origin and the early evolution of metazoa. |
| keywords:peculiar skeleton fossils uppermost Neopreterozoic Gaojiashan biota |
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