Study on foramineral fauna in Baitu section of Xiaoxian County in Anhui

Strata sections of the Carboniferous to early Permian in Baitu section of Xiaoxian County in Anhui Province were measured and the slices were cut on the samples collected from the strata sections and identified systemically under microscope.34 species,16 genera,9 families were identified and systemically described.Based on mathematical statistical method,three fossil foraminiferal assembly zones were found in Taiyuan Formation of the area in ascending order: Tetrataxis-Nodosaria-Palaeotextularia(C22).Compared with fossil foraminiferal assembly zones from different regions in China,the authors discussed the forminiferal fauna distribution features in late Carboniferous to early Permian and their significances on strata division and correlation.It was concluded that the fossil foraminifera were important indicators to confirm the boundary between Carboniferous and Permian periods.