【摘要】 柴达木盆地西部第三系的碳酸盐岩层中发现有藻类、介形虫、有孔虫、腹足类、多毛类等化石.除藻类外各种生物的数量都比较少.生物具有个体小,壳体构造简单,多样性低等特点.所有生物都属于广盐性生物.根据该区古生物特征分析和与其它地区的对比,认为当时该区生物生长于内陆半咸化湖至咸化湖环境,而不是海相或海陆过渡相环境.参11.更多还原

【Abstract】 The fossils of algae,ostracoda,foraminifera,gastropod and polychaeta were found in the Tertiary carbonate beds in the west of Chaidamu Basin.The quantity of various kinds of fossils was few,except the algae.The organisms were characterized by small size,simple structures of shells and low diversity.All kinds of organisms belonged to euryhaline organisms.It indicated that these organisms were developed in the environments of brackish lakes or salt water lakes and were not developed in the environments of marine facies or the transitional facies between the marine and land,according to the analysis of the paleontological characteristics in this area and the comparison with the paleocoenosis developed in other areas.11refs.更多还原