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嫩江组的介形美化石类型和数量都很发育,保存完整,壳饰特征明显,分带规律清楚,纵向上将其划分为16个化石带,并将相应的地层划分为17层,对黑帝庙油层的细分层研究很有意义。同时根据介形类化石属、种数量变化、壳饰特征研究了嫩江组的介形类化石的演化特征,及其与沉积环境的关系。认为嫩江组的介形类化石壳饰有两种类型,即:蜂孔—网状类型;小瘤状—刺状瘤—瘤状类型。壳饰的变化,明显地反映了生物生活环境的变化。
Nenjiang estuary beauty fossil types and numbers are well developed, well preserved, shell features obvious, clear zoning rules, vertically divided into 16 fossils, and the corresponding strata are divided into 17 layers, black The study of the subdivision of Diliu reservoir is of great significance. Meanwhile, the evolution characteristics of the ostracods in the Nenjiang Formation and its relationship with the sedimentary environment were studied based on the genera and species changes of the ostracods. It is considered that there are two types of mesogenic fossil shells in the Nenjiang Formation, namely: beehive-reticular type and nodule-spiculate tumor-nodular type. Changes in shell decoration, clearly reflects the changes in biological living environment.