204 



JNo. 8 с and also no. 6 help to extend very consider- 

 ably our knowledge of the East-Greenland Callovian rocks, 

 seeing that here, for the first time in that country, Callovian- 

 beds have been found to contain Ammonites suitable for deter- 

 mination. The following Ammonites have been found in these 

 beds: — 



Macrocephalites Ishmœ, Reys. 



Macrocephalites sp. cf. compressus, Qdenst. 



Macrocephalites Pompeckji nov. sp. 



Cadoceras crassum nov. sp. 



Macrocephalites Ishmœ indicates (see p. 191) that the 

 Macrocephalus-zooe (Lower €allovian) is represented in the Cal- 

 lovian-beds of Vardeklöft. 



No. 7 is also of great interest as proving that on Mount 

 Nathorst, throughout a number of brown sandstone deposits 

 of coarser or finer texture, a Lamellibranch fauna occurs. This 

 fauna is undoubtedly more ancient than the Callovian and should, 

 in all probability, be referred to the Upper Bajocian or Lower 

 Bathonian, or possibly to passage beds between these two stages. 



No. 11 is also very interesting for the yellowish-white sand- 

 stone found in Aucella River near the camping-place of August 

 18*^^ and 19* in the south-west of Jameson's Land contains 

 a fauna which can with certainty be referred to the Virgatus- 

 beds of the Lower Volgian. 



No. 4 proves that the «white Jura» probably exists also 

 on Fossil Mountain in the northern part of Jameson's Land. 



As in the case of the Jurassic deposits of East-Greenland 

 described already, the facie s of the material brought back in 

 1900 is that of shallow-water and coast-deposits. 



That the Jurassic rocks of East-Greenland show certain 

 faunistic peculiarities has already been demonstrated by 

 Toula and Lundgren, and is now more clearly seen on examination 



