海相早二叠世地层在我国东南、西南和西北地区分布广泛,发育完全,但大都以(蜓)、腕足、珊瑚相地层居多,菊石相地层只是近年来才有较多的发现,其广泛散布于浙江、江西、福建、广东、湖南、广西、贵州及西藏等地。特别是西藏地区,由于珠峰科学考察、区域地质调查和其它地质找矿工作的开展,先后也发现了多处含菊石的二叠纪地层:在定日、吉隆等地色龙群上部发现了早二叠世晚期的菊石 Paraceltites 和 Altudoceras;喜马拉 The Early Permian strata in the marine area are widely distributed and developed completely in the southeast, southwest and northwest of China. However, most of them are ( 蜓), brachiopod, coral facies and stratigraphy. Only in recent years have the ammonite facies been discovered. It is widely distributed in Zhejiang, Jiangxi, Fujian, Guangdong, Hunan, Guangxi, Guizhou and Tibet. In Tibet, in particular, many Permian strata containing ammonites have been discovered due to the scientific investigation of Mount Qomolangma, regional geological surveys and other geological prospecting work. In the upper part of the Serpentine In late Early Permian ammonites Paraceltites and Altudoceras; Himalayas