Abstract:The origin and evolution of land plants is closely related to their surrounding global environments.They exhibit dynamic trends through the Phanerozoic.Angiosperms appeared in the Early Cretaceous,and dominated the vegetation on the Earth in the Late Cretaceous.They had a great impact on the patterns and processes of evolution of global terrestrial ecosystems.Numerous angiosperm leaf remains deposited in the strata are believed to document biological information such as physiognomic characteristics,and it c...