Abstract: Abundant Sporotrapoidites and other Spore Pollen Fossils discovered in Fujin Forma-tion,Shanjiang Basin have changed the previous definition of Fujin Formation determined in Dongji Well 1,Which has been taken as a typical profile of the Formation.It is determined as early Miocene in age now.Ecology of Sporotrapoidites and associated Sporo-pollen infer an environment of Shallow water deposition and under a climate characterized as humid subtropic to emperate Zones.Two new species of Sporotrapoidites have been described in this paper.

摘要： 本文根据菱粉化石的发现,修正了三江盆地富锦组原来的定义,重新确立和描述了建组的地质剖面,并确认其时代属早中新世.在富锦组中发现了三歧菱粉和三江菱粉两个新种,根据菱粉生态特征,认为富锦组沉积时期为浅、淡水环境,古气候为潮湿的北亚热带至暖温带.

关键词: 三江盆地, 富锦组, 菱粉, 化石, 地层年代单位, 沉积环境, 古气候