湖北寒武系第二统水井沱组宏体锥管化石新发现  

New Discovery of Macroscopic Cone Fossils from the Cambrian Series-2 Shuijingtuo Formation of Hubei,China

作　　者：刘璇 陈春含 杨润宇 董琳 LIU Xuan;CHEN Chunhan;YANG Runyu;DONG Lin(Key Laboratory of Orogenic Belts and Crustal Evolution(MOE),School of Earth and Space Sciences,Peking University,Beijing 100871)

机构地区：[1]造山带与地壳演化教育部重点实验室,北京大学地球与空间科学学院,北京100871

出　　处：《北京大学学报（自然科学版）》2022年第4期644-654,共11页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(41672334)资助。

摘　　要：利用光学显微镜和扫描电子显微镜,对湖北神农架地区宋洛坪剖面和秭归地区滚石坳剖面寒武系第二统水井沱组的宏体锥管状化石开展详细的研究。识别出楔叶虫属Sphenothallus的一个新种,以其“V”形加厚带表面的纵向纹饰为特征;首次在水井沱组发现软舌螺纲Hyolithida偶带线螺属Ambrolinevitus。研究结果丰富了水井沱组的生物多样性,为探讨早期生命演化提供了新的化石材料。Macroscopic cone fossils,from the early Cambrian Shuijingtuo Formation of Shennongjia and Zigui areas,Hubei Province,were studied by using stereo light microscopy and scanning electron microscopy.A new species of the genus Sphenothallus was identified by its longitudinal ridges located within the“V”shaped thickenings.The genus Ambrolinevitus of the class Hyolithida was firstly described from Shuijingtuo Formation.The result enriches the biodiversity of the Shuijingshuo Formation and adds new palaeontological data for the research of early life evolution.

关 键 词：寒武纪 水井沱组 刺胞动物 楔叶虫属 软舌螺纲 

分 类 号：P534.41[天文地球—古生物学与地层学] Q914.2[天文地球—地质学]