On Jurassic and Cretaceous fossils from North-East Greenland. 441 



Regarding the features of the deposits at the different localities 

 I am only ahle to give a little information, for which my thanks 

 are due to the geologist of the Expedition, Hakon Jarner. A more 

 detailled description of these will he given later in the general part 

 on the geology of North-East Greenland, which H. Jarner has under 

 preparation. 



The widest distribution is shown by the deposits mentioned on 

 the east coast of Store Koldewey. The whole of the east coast of 

 this island is formed, according to information from Jarner, of a 

 plateau, which has a height of about 120 in. above the sea in the 

 northern part of the island; towards the south the plateau sinks 

 more and more. It is only in towards the middle of the island that 

 we meet with the high hills of gneiss. Whether this plateau is an 

 abrasion surface or has been formed in another way, I must leave 

 uncertain. Uppermost we find Quaternary formations (moraine, 

 JToWia-clays) and below these the solid rock, which in the middle 

 of the island is formed of sandstone interrupted at a couple of places 

 by gneiss, so that we have .'$ sandstone regions on the east coast, 

 the northernmost being the largest and the middle one the smallest 

 (see accompanying Chart, pi. XXXVIII). At the southernmost of the 

 two gneiss points Jarner found the sandstone resting directly on 

 the gneiss, and a few samples of the sandstone further north, 

 which were brought home, contain pieces of gneiss. We- thus have 

 here a case of transgression. 



In the following the different, marine, mesozoic deposits from 

 North-East Greenland will be discussed, beginning with the oldest 

 and ending with the youngest. 



a. Callovian. 

 Deposits belonging to the Callovian were only found at one 

 locality, namely, in the southernmost sandstone region on the east 

 coast of Store Koldewey, down from "Triekpasset". A number of 

 fossils were found here in a characteristic, brownish, fine-grained 

 sandstone. The fossils were found mainly in pieces of sandstone 

 which lay loose on the surface of the plateau, but the same sand- 

 stone formed a solid layer underground. The accompanying list of the 

 fauna (p. 4">1) will show the species and genera of the fossils from 

 Ibis locality, which I have been able to determine. The principal are 

 undoubtedly the .'5 Ammonite species; although they all 15 probably 

 belong to new species, there seems hardly any doubt thai we have 

 here a Callovian fauna, as they all appear to be most nearly related 

 to Callovian species, and the other fossils do not seem in any way 

 opposed to this determination of the age. It is interesting, that 



