The assemblage characteristics, distribution and paleoecology of ostracods in the Fuyu and Yangdachengzi oil horizons in the Sanzhao area, Songliao basin, have been studied systematically.

• 笔者较系统地对松辽盆地三肇地区扶余油层和杨大城子油层(以下简称扶、杨油层)介形类的组合特征、分布范围以及古生态进行了研究。