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依兰-伊通地堑方正断陷方参2井2 104.0-3 450.0m井段为一套红色碎屑岩,产有孢粉化石Cicatrico-sisporites , Lygodiumsporites , Appendicisporites , Concavissimisporites , Gleicheniidites , Cyathidites , Cibotiumspora.Foraminisporis,Taxodiaceaepollenites,Inaperturopollenites,Triporopollenites和