The Study Of Late Permian Pecopteris In Fuyuan,Yunnan Province

The Permian strata in the eastern Yunnan region and widely distributed in a row,rich in fauna and flora,and have a long history of research,but mainly focused on the morphological description of fossil plants and flora overall discussion and comparison research,and in-depth discussion on the significance of botany characteristics,evolution and plant reproductive organs study is less,Pecopteris of the genus system research is rarely reported.In this paper,we studied the fossil specimens of Pecopteris from the Late Permian and the breeding almonds in the Fuyuan area.A total of 87 Pecopteris specimens,sterile pinna specimens of 56 pieces,identified 11 species,fertile pinna specimens of 31 pieces,identidies 4 species.System describes the morphological of Fuyuan region Pecopteris,and detailed comparison and discussion 11 kinds of sterile pinna characteristic.In this paper systematic description about the diversity and tempo-spatial distribution of Pecopteris in Carboniferous and Permian in China,the distribution of roughly:the distribution of the early Carboniferous to the late Permian in China is gradually expanding,the late Permian reached its maximum;diversity also showed an upward trend,the late Permian to reach the maximum.The origin and development of the zombies are distinctly different in the south and north of China,North early Carboniferous,Pecopteris began to appear,then gradually increase,flourished in the early Permian,Permian started a trend of attenuation;early Permian in southern started a minority Pecopteris members distribution,then rapid radiation to most parts of the south,in the south of late Permian comb the fern belongs to the most prosperous.Compared with the paleogeography,paleoclimate and paleostructure,there is a coupling relationship with the diversity and tempo-spatial distribution of the Pecopteris.