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在对辽南复州湾煤系剖面详细测制的基础上，系统地采集太原组腕足动物化石３１属５０余种，首次建立了该区３个腕足动物组合，它们分别是：①Ｓｔｅｎｏｓｃｉｓｍａｂｉｐｌｉｃｔａ－Ｂｅｅｃｈｅｒｉａｍｉｎｉｍａ组合②Ａｌｅｘａｎｉａｇｒａｔｉｏｄｅｎｔａｌｉｓ－Ｄｅｒｂｙｉａｃａｒｄｉｆｏｒｍｉｓ组合③Ｍａｒｇｉｎｉｆｅｒａ－Ｎｅｏｃｈｏｎｅｔｅｓ组合。该区腕足动物群与华北地合广大地区及前苏联乌拉尔、提曼地区同期动物群有着不同程度的相似性和联系，通过进一步分析与对比，认为研究区在太原组沉积时期位于华北地台的东北部。
Based on the detailed measurement of the coal series section of Fuzhou Bay in Liaonan, more than 50 species of Brachiopod fossils from Taiyuan Formation were systematically collected. For the first time, three brachiopod assemblages were established in this area: ①Stenoscismabiplicta-Beecheriaminima combination ② Alexandaniagratiodentalis-Derbyiacardiformis combination ③ Marginifera-Neochonetes combination. The Brachiop fauna of this area has similarities and correlations with the vast fauna in North China and the Ural and Timan areas in the same period in the same period. Through further analysis and comparison, it is concluded that the study area is located in the North China platform during the deposition of the Taiyuan Formation northeast.