皖南早寒武世荷塘组海绵骨针化石

来源 :微体古生物学报 | 被引量 : 0次 | 上传用户:w119127594
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本文报道皖南休宁县早寒武世荷塘组黑色页岩中产出的海绵骨针化石组合 ,这些海绵骨针化石具有较高的丰度和分异度 ,它们以二轴四射针、T型针、三轴六射针和三轴五射针为主。骨针形态完整 ,并保存了内部轴丝、轴管以及同心圈层等微细构造。黄铁矿化在化石的保存中起了重要的作用 ,化石产出的时代可能为梅树村阶至筇竹寺阶 (Tomm otian- Atdabanian) ,这个化石组合证实了海绵动物在早寒武世已开始迅速分异。 In this paper, we report the sponge spinel fossil assemblages produced in the black shale of the Early Cambrian Hetang Formation in Xiuning County, Southern China. These spongiform fossils have high abundance and differentiation. They are characterized by biaxial quadrilateral needle, Needle, three axis six needle and three axis five needle mainly. Complete shape of the needle, and save the internal axis wire, shaft tube and concentric layers of fine structure. Pyrite mineralization has played an important role in the preservation of fossils. The fossil production time may be from the Tommotian-Atdabanian to the Tommotian-Atdabanian. This assemblage of fossils confirms that the sponge fauna in the early Cambrian Has begun rapid differentiation.
其他文献
期刊
期刊
期刊
随着时代的不断发展,人们对图书馆的管理也有了新的要求,人性化服务是适应现代社会的一种新管理理念,图书馆工作改革的一个重要标志就是图书馆管理坚持“以人为本”的服务,真正实
期刊
期刊