4Ö Art. 8. — A. Kryshtofovich : 



" fossil " species like Eucommia, Liriodendron, Cercidiphijllum, etc. 

 Having now at hand, in Tokyo, only very poor specimens out of 

 our rich collection, I postpone a full description of this species. 



Nilssonia in Sakhalin is a type fossil of Gyliakian, but has 

 not yet been actually observed in any other horizon, though in 

 Hokkaido the position of this or alhed species is probably some- 

 what higher. 



Gynkgoales. 



14 and 15. Ginkgo sp. A. and B. 



Localities : Sea-shore at Mgach and to the north of it. 



Impressions of Ginkgo occur in Sakhalin in the Gyliakian 

 Series, as well as in the real Tertiary. Heer has mentioned 

 Ginkgo^^ only from a bed in Mgach, which has now been proved 

 to be Cretaceous, but not from the true Tertiary at Dui, as I did. 

 Some of our Cretaceous specimens are similar to the entire leaves 

 described by Heeh, but several others have a more fissed lamina. 

 The latter therefore may be compared with G. muUinervls Hr.^^ 

 and the former rather witli G. primordialis,^^ both species being 

 from Atane. 



Mr. Shimotomai-Tanakadate recorded, in lUtens, two species of 

 this genus from the Lower and Upper Divisions of the Cretaceous 

 of Makai in Japanese Sakhalin, comparing one of them with G. 

 multinerms He., and the other with G. adlantoides Hr., which is 

 probably identical with G. primordiaUs. 



Besides this Ginkgo^ a full description of which I must post- 

 pone until a complete study of our materials can be made, there 

 are found among Ginkgoales from the Gyliakian some plants like 

 Baiera and Giukgodiiim. 



1) Heer (1878 c), p. 21, pi. H, f. 7-10. 



2) Heer (1882), p. 46, pi. V, f. c ; VHI, f. 2 b, 3, 4 ; IX, f. 3 b. 



3) Heer (1874), p. 100, pi. XXVH, f. 1-3; (1882), p, 47. 



