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Upper Cretaceous rudist bioherms in south western Tarim
peng yang 1; 2 guo xianpu 2 wang yinong 3 ding xiaozhong 2(1.school of earth and space scien ces; peking university; beijing100871; china; 2.institute of geology; chinese academy of geological sciences; beijing100037; china; 3.institute of pe
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