1978年以来,笔者在参加“苏皖北部上前寒武系”研究项目的过程中,陆续在安徽淮南及霍邱一带下寒武统雨台山组①采集了一批标本②。经室内处理,获得了较为丰富的多门类小壳化石。除三叶虫外,有软舌螺类、单板类、腹足类、腕足类、双壳类、古介形类、多孔动物及分类位置不明的生物化石。雨台山组的单板类和腹足类化石研究已另 Since 1978, I participated in the “Pre-Cambrian Department of Northern Jiangsu and Northern Anhui Province” research project, one after another in Anhui Huainan and Huoqiu area under the Cambrian Yu Taishan ① collected a group of specimens ②. After the indoor treatment, access to a rich variety of small shell fossils. In addition to trilobites, there are soft lingual snails, veneer, gastropods, brachiopods, bivalves, ancient canonicals, porous animals and unknown location of biological fossils. Yu Taishan group of veneer and gastropod fossils have another study