• 责任者：Bu Jianjun (Wuhan Center of Geological Survey ; Wuhan 430223 ; China) ; Duan Xianfeng
• 刊名：Geological Bulletin of China
• 出版年：2011
• 卷期：30(6)
• 关键词：中二叠世 ; Middle Permian ; 腕足动物门 ; Brachiopoda ; 内蒙古 ; Inner Mongolia
• 页码：p.943-954
• 图表：3 illus., 4 plates, 27 refs.
• 分类号：1103
• 出版序号：1080
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Abundant brachiopods have been recorded from the Middle Permian strata of Ejin Banner and its vicinities. This fauna, called Zhesi Fauna, is characterized by a mixed fauna composed of boreal cool-water elements and Tethyan warm-water elements. The brachiopod Spiriferella-Kochiproductus-Yakovlevia assemblage has been recognized from this fauna. In paleobiogeography, Ejin Banner and its vicinities were located in a transitional position between Boreal and Tethyan provinces, called Sino-Mongolia province. The geological age of Zhesi Fauna is assigned to the Roadian to Kufengian, based on an analysis of its origin, spatial distribution and associated fauna.