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地球学报  2003 

长江源各拉丹冬地区晚二叠世乌丽群的腕足类生物组合

Keywords: 二叠纪,乌丽群,腕足类,长江源区

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Abstract:

在长江源区各拉丹冬一带晚二叠世地层中建立了2个腕足类生物组合,下部为Spinomarginiferacf.kueichowensis-Tschernyschewiacf.sinensis-Tyloplectacf.yangtzeensis组合,见于乌丽群下部的那益雄组;上部为Leptodusnobilis-Perigeyerellacostellata-Enteletessubequivalis组合,见于乌丽群上部的拉卜查日组。两个组合生物群属于特提斯动物群,均可与华南地区同期地层中的生物群相对比。

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