摘要
本文描述了贵州剑河八郎寒武系第二统第四阶"清虚洞组"剑河生物群的高肌虫化石。化石壳体呈圆形,背边平直,前、后背角均钝,壳前背部具有"V"形槽。符合Qingquanella Cui et Huo,1985的属征,与模式种湖北清泉虫Q.hubeiensis相似,将其厘定为湖北清泉虫相似种Q.cf.hubeiensis。本属产于湖北水井沱组、石牌组及陕西辛集组,黔东地区"清虚洞组"发现清泉虫Qingquanella,增加了清泉虫的产地信息、新的类群,其壳体形态由切卵变圆形,生态环境由浅水向深水变化,为高肌虫的形态分类、早期演化与辐射分异提供新的材料。
This study described the bradoriid fossil of the Jianhe biota from the＂Tsinghsutung Formation＂of the stage 4,Cambrian System Series 2 in Guizhou Province,Southwest China.The specimen has round-shaped valve,flat and straight dorsal edge,both blunt anterodorsal angle and posterodorsal angle.There is a＂V＂shaped sulcus in anterodorsal area,which conforms to the generic characters of Qingquanella.Most similar with the type species Qingquanella hubeiensis,it is obviously different with other species,thus the specimen reported here is assigned as Qingquanellacf.hubeiensis.Qingquanellahas been reported mainly from the Shuijingtuo Formation and Shipai Formation of Hubei Province and the Xinji Formation of Shaanxi Province.The discovery of＂Tsinghsutung Formation＂Qingquanellacf.hubeiensisfrom Guizhou Province has increased the distribution of bradoriid Qingquanellaand provided new materials for the classification,evolution,paleogeographical distribution of Qingquanella.The morphological carapace changes from an oval shape to a circle shape,which implies a ecological niche changes from shallow water to deep water,add to new data for the study of the classification and paleogeographical research of the whole bradoriid.
作者
杨光福
赵元龙
陈婉怡
张源
陈争鹏
YANG Guangfu;ZHAO Yuanlong;CHEN Wanyi;ZHANG Yuan;CHEN Zhengpeng(College of Resource and Environment Engineering,Guizhou University,Guiyang 55002)
出处
《微体古生物学报》
CSCD
北大核心
2018年第3期302-308,共7页
Acta Micropalaeontologica Sinica
基金
国家重点基础项目基金(2015FY310100-5)
国家自然科学基金重大基金(41330101)
国家自然科学基金(41772021
41662001
41702022)
中国地质调查局调查项目(DD20160120-04)
贵州省科技计划项目(黔科合平台人才[2017]5788号)~~
