The paleoenviroment of Dongying Sag is studied by focusing on the features of Ostracoda fossil community and paleoecology, especially the dominance(dm) and diversity(Hs)of Ostracoda.

• 本文通过分析介形类化石组合与生态特征，结合优势度与信息函数分异度分析，进而探讨东营凹陷的古环境。