长期已来,龙门洞剖面中玄武岩之上的沙湾组以及飞仙关组中没有发现可鉴定的化石。1981年王正瑛等老师指导的毕业生在此测制剖面时,在沙湾组的黑色硅化炭质泥岩中找到植物化石碎屑,引起笔者的兴趣,特地与几位指导老师和同学前去采集,终于采到了一批保存 For a long time, no identifiable fossils were found in the Shawan Formation and the Feixianguan Formation above the basalt in the Longmen cave. 1981, Wang Zhengying and other teachers under the guidance of graduates in this section to measure the profile, the Sha Wan Formation of black silicified carbonaceous mudstone to find fossil plant debris, causing the author’s interest, specifically with several instructors and classmates to go to collect , Finally picked up a number of preservation