论文部分内容阅读
对广西柳桥剖面、贵州晒瓦剖面和安徽平顶山西剖面晚二叠世末期硅泥质岩相地层中产出的介形类化石进行了系统分类学研究,共鉴定介形类化石30属86种,其中包括1个新属Denticupachydomella Yuan gen.nov.和2个新种Pseudobythocypris guiqianensis Yuan sp. nov.和Denticupachydomellaspinosa Yuan sp.nov.。该动物群主要由薄壳和个体较小的介形类组成,呈现出以古生代分子为主,同时含有少量典型中生代先驱分子(如:Abrobair-dia,Lobobairdia)的混合动物群面貌。通过这些剖面之间的对比以及与前人研究资料对比,发现各剖面产出的介形类动物群具有强烈的地方性,三个剖面之间无相同分子,亦仅有20种曾报道于欧洲和东南亚等地区晚石炭世-晚二叠世地层。
Systematic taxonomic studies on the genealogical fossils from the Liuqiao section in Guangxi, the Bashan section in Guizhou and the late Permian siliceous lithofacies in the Pingdingshan west section of Anhui Province were carried out. A total of 30 genera of fossils were identified Species, including a new genus Denticupachydomella Yuan gen.nov. And two new species Pseudobythocypris guiqianensis Yuan sp. Nov. And Denticupachydomellaspinosa Yuan sp.nov. The fauna is mainly composed of the smaller shell and the individual small mesoids, presenting a fauna assemblage that is predominantly Paleozoic with a small number of typical Mesozoic pioneer molecules (eg, Abrobair-dia, Lobobairdia). By comparing these profiles and comparing with previous studies, it is found that the ostracods produced in each profile are strongly endemic with no identical molecules among the three profiles and only 20 have been reported in Europe And Southeast Asia and other areas from the Late Carboniferous - Late Permian strata.