\ Cladophlebis koraîensis 



50 ART. 8. H. YABE. 



Pinus cfr. prodromiis FTr Pinus sp. 



Coniopteris Heerianus (Yok.) ...Coniopteris Heerianus {Y ok.) 



Onychiopsis elongata (Geyler) . . . Onychiopsis elongata (Geyler) 



Dicksonia nephrocarpa (Bunb.)...C1 hymenophylloides (Brongn.) 



Asplenmm distans Hr. 



A. argutulum Hr. 



A. argutulum Hr. ] ^ ^ , .. 7 . /-r. 



> C. cfr. denticulata (Brongn.) 



Pecopteris exilis Phill.J 



Adiantite's Sewardi Adiantites Sewardi 



Equisetum ushimarense Yok Eq^dsetum ushimarense Yok. 



As may be seen from the above, the general features of the 

 two floras are essentially the same, so that their contemporaneity 

 is quite evident. ^^ 



Prof. YoKOYAMA,^^ in his elaborate work on the Jurassic 

 plants from Kaga, Hida and Echizen, assigned most of the fossili- 

 ferous beds to the Bathonian age, which view was subsequently 

 accepted by Nathorst^^ and others. However, Ward^^ and 

 Seward^^ among others point out the presence in the flora of 

 many plants of Wealden types, suggesting that the plant-beds are 

 of the lower Cretaceous age. 



In a paper recently written on the Ammonites from Echizen, 

 Prof. YoKOYAMA*^^ states his conclusion that at least a part of 

 the Tetori series is younger than the Bathonian and must be of 

 the Malm age. 



1) In this place, it should also be borne in mind lliat tlie Jurassic districts of Kaga, 

 Hida and Echizen in Japan and of Kyöng-syan,g-Do in Korea are nearly in the same 

 latitnde. 



2) Page 19. 



3) Nathobst: Beitr. z. Mesoz. Flora Japans. 



4) Ward: Geographical Distribntion of Fossil Plants, p. 789. 



5) Seward: Wealden Flora, I., p. ?,2. 



6) YoKOYAMA : Jurassic Ammonites from Echizen and Nagato, p. 3. 



