塔里木盆地库车坳陷中侏罗统的一些双壳类  

SOME MIDDLE JURASSIC BIVALVES FROM THE KUCHE DEPRESSION OF THE TARIM BASIN,NORTHWESTERN CHINA

作　　者：姜宝玉[1] 蔡华伟[2] 陈澌苇[2] 

机构地区：[1]南京大学地球科学系,南京210093 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》2005年第2期296-305,共10页Acta Palaeontologica Sinica

基　　金：中国科学院知识创新工程项目(KZCX2 SW 129);国家自然科学基金(No. 40372008);国土资源部资助课题

摘　　要：系统描述库车坳陷中侏罗统的双壳类3 属4 种。根据双壳类Kija铰合构造变异范围的研究,认为Acyrena、Pseudocardinia、Jiangxiella、Apseudocardinia、Hunanella、Yananoconcha、Hamiconcha和Fengjiachonia都是Kija 的同物异名。库车坳陷中侏罗统的双壳类化石属于Lamprotula (Eolamprotula) cremeri Kija (=Pseudocardinia) kweichouensis动物群,分为Kija ovalis K. kweichouensis和Lamprotula (Eolamprotula) guan gyuanensis Margaritifera? cf. isfarensis两个化石组合。Kija ovalis K. kweichouensis组合产于克孜勒努尔组和恰克马克组下部,时代为中侏罗世早期,可能主要为阿林期至巴柔期;Lamprotula (Eolamprotula) guangyuanen sis Margaritifera? cf. isfarensis组合主要分布于恰克马克组中上部,时代为中侏罗世晚期,可能主要为巴通期至卡洛夫期。Some bivalves belonging to 4 species of 3 genera from the Middle Jurassic in the Kuche Depression are described in this paper. Based on the study of hinge variation of Kija, the genera Acyrena, Pseudocardinia, Jiangxiella, Apseudocardinia, Hunanella, Yananoconcha, Hamiconcha and Fengjiachonia are considered as junior synonyms of Kija. The Middle Jurassic bivalves of the Kuche Depression are members of the Lamprotula (Eolamprotula) cremeri-Kija (=Pseudocardinia) kweichouensis Fauna, they can be di- vided into the Kija ovalis-K. kweichouensis Assemblage and the Lamprotula(Eolamprotula)guang yuanens is-Margaritifera? cf. isfarensis Assemblage. The Kija ovalis-K. kweichouensis Assemblage is collected from the Kezilenuer Formation and the lower part of Qiakemake Formation, indicating an earlier Middle Jurassic age, probably ranging from Aalenian to Bajocian. The Lamprotula (Eolamprotula) guangyuanensis-Margaritifera? cf. isforensis Assemblage is distributed in the upper part of Qiakemake Formation, reflecting a late Middle Jurassic age, probably concentrated from Bathonian to Callovian.

关 键 词：中侏罗统 库车坳陷 塔里木盆地 中侏罗世早期 双壳类化石 系统描述 构造变异 同物异名 Lamp 化石组合 动物群 cf 

分 类 号：Q915[天文地球—古生物学与地层学]