一、前言康马和拉孜曲虾两地分别位于北喜马拉雅构造带的南部和北部。该构造带中生界最发育,石炭,二叠系出露零星,但在康马却发育良好。研究康马的石炭、二叠系和拉孜曲虾的二叠系及其生物群,对西藏南部同期地层的对比、了解其生物群的特性、探讨喜马拉雅区和冈底斯一念青唐古拉区(下简称冈一念区)的沉积一构造发展史及两区的相互关系等方面,具有重要意义。 I. Introduction The Kangma and Latsi shrimp are located in the north and the north of the Northern Himalayan tectonic belt respectively. In the tectonic belt, the Mesozoic is the most developed, and the Carboniferous and Permian exine sporadic, but well developed in the Kangma. To study the Permian and its biota of the Carboniferous, Permian and Latsai shrimp in the state of Conma, and to understand the characteristics of their biota on the contemporaneous stratigraphy in the southern Tibet, and to explore the relationship between the Himalayas and Gangdise-Nyainqentanglha areas Hereinafter referred to as Okayama area) of the history of depositional structure and the relationship between the two areas, is of great significance.