New material of Cordaites baodeensis Sun from Lower Permian Shanxi Formation of Baode, Shanxi

摘要

Based on the anatomical study of leaf cuticles of Cordaites from the Lower Permian Shanxi Formation in Baode of Shanxi,the author analysed the epidermal characters of Cordaites in this area.On the base of the abundant compressions and laboratory studies,the author complemented some new data of the cuticular characters of the species Cordaites baodeensis Sun for its study of taxonomy.Meanwhile,the author newly discovered a number of sporopollen fossils associated with the mega-plants of Cordaitales,described 9 species of 6 genera.The palynological data can provide a supplement evidence for defining the age of C.baodeensis and its associated plants to be Early Permian.