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本文描述了西藏南部聂拉木县拉弄拉地区采集的雏蛤化石17种(包括三个新种,一个新亚种),新建立了三个雏蛤化石组合:1.同心雏蛤(Bnchiaconcentrica);2.莫斯科雏蛤(Buchia mosquensis)-曲喙雏蛤(B.cyphobeccuasa);3.彼阿契雏蛤(Buchia piochii)-古错雏蛤(B.gucuoensis)。简要分析和讨论了它的组合特征、地层分布、沉积环境及其生态。
This paper describes 17 species (including three new species and one new subspecies) of fossil clams collected from Laongra region in Nyalam County, southern Tibet. Three new clam fossil assemblages were newly established: 1. Bnchiaconcentrica ); 2. Buchia mosquensis - B. cyphobeccuasa; 3. Buchia piochii - B. gucuoensis. It briefly analyzes and discusses its combination features, formation distribution, sedimentary environment and its ecology.