腕足类新戟贝(Neochonetes)属与特提斯戟贝(Tethyochonetes)属的鉴定特征及其比较  

Examination of Neochonetes and Tethyochonetes(Brachiopoda) and Their Comparison

作　　者：吴会婷[1] 胡飞[1] 何卫红[2] 杨廷禄[1] 李省晔[1] 滕霏[1] 乐明亮[1] 

机构地区：[1]中国地质大学地球科学学院,武汉430074 [2]中国地质大学生物地质与环境地质国家重点实验室,武汉430074

出　　处：《地质科技情报》2013年第2期35-40,共6页Geological Science and Technology Information

基　　金：国家大学生创新性实验计划项目(101049102);国家自然科学基金项目(40872008;40921062);教育部优秀人才支持计划项目(NCET-10-0712);中央高校基金项目(CUGL100611;CUGL100504)

摘　　要：Neochonetes(新戟贝)和Tethyochonetes(特提斯戟贝)是二叠纪-三叠纪界线剖面常见的腕足类化石,对二叠纪-三叠纪之交这一重大地质历史转折期的古生态和古环境研究都具有重要价值,但它们在外部形态上十分相似,给鉴定工作带来难度。通过对中寨剖面所产该2属化石的详细观察、度量、描述、鉴定、统计与对比,从壳形、壳饰、外部和内部构造等几个方面阐述了Neochonetes和Tethyochonetes的异同。此外,在对所采标本进行分类整理的过程中,笔者还发现这2个属较多地出现在长兴阶粉砂质泥岩和硅质泥岩相中,且其时代与岩相分布具有一定的规律。This paper studied the brachiopods Neochonetes and Tethyochonetes specimens from the Permian-Triassic boundary of Zhongzhai section,Guizhou Province.The specimens of these two genera are abundantly recorded in the silty-mudstone and silicieous-mudstone facies in South China and can provide important information for understanding of the paleoenvironment during the Permian-Triassic transition.We compared Neochonetes and Tethyochonetes in detail based on careful observation,identification,statistics,as well as information from related literatures.The genera of Neochonetes and Tethyochonetes are very similar in shape.They are mainly different in outline,ornamentation,external and internal features.

关 键 词：二叠纪-三叠纪之交 腕足类 Neochonetes Tethyochonetes 

分 类 号：Q911.23[天文地球—古生物学与地层学]