Permian brachiopod fossils along Yudun Profile, Jianyang County, Fujian Province

Based on studying the brachiopod fossils collected from Yudun profile in Jianyang County, Fujian Province, the authors obtained five species belonging to six genera. Among them, two indeterminate species and three species (Paracrurithyris pygmaea, Tethyochonetes quadrata and Acosarina minuta) were discovered on Yudun profile for the first time. According to comprehensive fossil age distribution and regional correlation, this fauna was identified as belonging to the Late Permian Changhsingian period. The strata containing this fauna should be the Talung Formation instead of Wenbishan Formation or Quanshang Formation as previously considered. Based on the paleoecology of the brachiopod fauna and the sedimentary characteristics of the strata, the authors hold that the strata were deposited in a warm and neritic environment.