Mariopteris is one of the most important Carboniferous pteridosperms in the Eura-merican floras.It is represented by more than fifty species,most of which occur ratherwidely and abundantly in the Westphalian,and not uncommon in the Upper Namuriandeposits.A thorough study of the family Mariopterides including the form genera Mariopteris,Tetratmema,Dicksonites,Pseudomariopteris and many species attributed tothem commonly found in the Carboniferous of North France has been made by P.Danzé-Corsin in 1953.The genus has hitherto not definitely been known in Eastern Asia;only a few frag-mentary specimens have been described by Kawasaki(1931—34,p.157,pl.28,fig.53)as?Mariopteris sp.from the Jido Series of Korea,by Sze(1934,p.604,pl.5,fig.8)as Mariopteris?sp.from the Hsuanmachuang Series of Tachingshan,Inner Mongolia and by Stockmans and Mathieu(1939,p.8,pl.8,fig.3)as Mariopteris?hallei from the Chaoko-chuang Series of Kaiping Basin.
