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内蒙古自治区昭乌达盟地区晚二叠世地层非常发育,分布广泛,化石丰富。昭乌达盟北部(西拉木伦河以北)和南部晚二叠世地层及植物组合的内容存在明显差异,这对深入研究南、北植物地理区系以及北部安加拉植物群与南部华夏植物群的演化关系具有重要意
The Late Permian strata in the Zhaowuda League area of Inner Mongolia Autonomous Region are well developed, widely distributed and rich in fossils. Significant differences exist in the contents of the Late Permian strata and plant assemblages in the northern part of the Zhauda League (north of the West Lamelun River) and the Late Permian. This is of great significance to the further study on the geographical fauna of southern and northern plants and the flora of Angara in the north The evolutionary relationship between Chinese flora is of great importance