本文通过苏浙皖边境“龙潭组”的初步研究。认为本区晚二迭世龙潭组实包含两个不同时代的沉积。即含 Neomisellina,Shouchangoceras 原龙潭组下部地层时代应属早二迭世。将该段地层与传统孤峰组合并确立广义孤峰组,并代表华南早二迭世晚期茅口阶较为完整的沉积类型。厘订后的龙潭组由两个含煤段夹一个海相段构成。 This article through the Jiangsu, Zhejiang and Anhui border “Longtan group” a preliminary study. It is concluded that the Late Second Ertan Longtan Formation contains two different depositional ages. Namely Neomisellina, Shouchangoceras The original Longtan Formation strata should belong to the Lower Second Middle Ages. This section of strata is combined with the traditional one and establishes the generalized group of solitary peaks and represents the more complete sedimentary type of the Maokou stage in the late Early Permian of South China. The finalized Longtan Formation consists of two marine sections with two coal sections.