On the Cretaceous Flora of Russian Sakhalin. Si 



1902. Kurtz, Contributiones a la Palaeophytologia Argentina. 11 : Sobre la 

 existencia de una Dakota Flora en la Patagonia Austro-Occidental, 

 p. 49. 



1911. Bekry, The Flora of tlie Raritau Formation, p. 68, pi. V. f. 34. 



1914. Kryshtofovich, The discovery of the .Ingiosperm Flora in the 

 Cretaceous of Ural ])rovince, p. 605, f. 2. 



Locality : Erikson's coal mine ; Petrovsky's coal mine ; 

 sea-shore at Mgach, etc. 



Among the numerous ferns in our collection partly still undeter- 

 mined, we can easily recognize A. Dicksonianum, which is quite com- 

 mon in Kome and Atane Beds, as well as in the Lower Cretaceous 

 and the Dakota Formation of X. America, besides the Cenom- 

 anian of Western Europe and Russia. Prof. Berey'^ expressed the 

 opinion, that some specimens of Asplenium Dicksonianum described 

 by Dawson from Canada and by Heee from Greenland, should be 

 referred to Thyrsopteris Goeppertii (Schenk) in the new sense of 

 Beeky, embracing some species of the Potomac, also in the 

 Wealden of Europe and the Lower Cretaceous in Japan. He puts 

 into the latter species also Thyrsopteris varians Font., under which 

 name Shimoto^iai-Tanakadate recorded only in litteris, a fern from 

 Makai in Japanese Sakhalin (upper part of the Lower Division of 

 the Cretaceous in S. Sachalin). 



6. JPecopterls boheniica Corda. 



1846. Corda, in Reuss Versteinerungen, p. 95, pi. XLIX, 

 f. 1. 



1874. Heee, Die Kreideflora der arctischen Zone, p. 9G, pi. 

 ,p7g 2. XXVI, f. 17 a d. 



Pecopttriä 1882. Heer, Die fossile Flora Grönlands, p. 35, t. XXXVI, f. 



boliemica ^ ^ 



COBDA. 



Locality : Sea-shore at Mgach. 



1) Berry (1911 b), p. 327. 



