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渤海海域渤东凹陷沙河街组四段内发现了丰富的孢粉、藻类和轮藻类化石组合,孢粉组合与渤海湾沿岸地区沙河街组四段的Ephedripites-Ul moideipites tricostatus-Pterisisporites组合特征一致,沟鞭藻类见有Luxadini-umelongatum,Cangxianellaelongata,Alterbidinium?sp.,Subtilisphaerasp.等典型的沙四段分子,并在渤海地区首次发现了Luxadiniumdongmingense,Morkallacysta paradoxum,M.huanghuaense,Palaeoperidiniumrugosum等种,轮藻则连续见到渤海沿岸地区沙四段典型化石Gyrogona qianjiangicao。该古生物组合的发现为该地区沙四段地层的确定提供了可靠的古生物资料,为今后地层的划分与对比提供了依据。
The abundant assemblages of sporopollen, algae and charophytes were found in the fourth member of Shahejie Formation in the Bodong depression in the Bohai Sea. The assemblage of sporopollen assemblages was consistent with the Ephedripites-Ul moideipites tricostatus-Pterisisporites assemblage in the fourth member of Shahejie Formation in the Bohai Bay area. The dinoflagellates have typical four-segment molecules of Luxadini-umelongatum, Cangxianellaelongata, Alterbidinium? Sp., Subtilisphaerasp. And Luxadinium dongmingense, Morkallacysta paradoxum, M.huanghuaense and Palaeoperidiniumrugosum were found in the Bohai Sea for the first time. The typical fossil Gyrogona qianjiangicao from the fourth member of the Shahejie Formation on the coast of Bohai Sea was seen. The discovery of this palaeontological assemblage provides reliable palaeontological data for the determination of the Es4 in the area, which provides the basis for the stratigraphic division and comparison in the future.