112 JOHAN KIÆR. M.-N. Kl. 



Conclusion. 



In conclusion vve may give some of the chief results of our strati- 

 graphical considerations. 



The Lower Cambrian series consists in the central part of Norway 

 of a lower and very large division, mainly consisting of coarse clastic sedi- 

 ments of continental origin (The Sparagmite formation) and an upper and 

 comparatively slight marine division. The continental formations contain 

 no fossils, but appear to belong to the lower and middle part of the Lower 

 Cambrian; the upper marine portion comprises several fossiliferous zones, 

 the fauna of which on the whole may be paralleled with the Callavia fauna 

 in N. America and England. However, the uppermost zone must probably 

 be regarded as contemporary with the Protolenus fauna, which did not reach 

 development in Scandinavian regions. The Norwegian Lower Cambrian 

 proceeds evenly upwards into the Middle Cambrian {Paradoxides Ølandicus 

 zone). The Scandinavian Lower Cambrian marine formations were deposited 

 in a Fenno-Scandinavian sea that was formed by a trangression from the South 

 in the uppermost part of the Lower Cambrian. This forms a separate 

 faunistic province, and was separated from the English- N. American ozean by 

 a continent that can be clearly demonstrated in southern Norway and the 

 adjacent districts of Sweden, but which probably extended faitjier in a 

 southern and north- western direction. In the lower part of the Middle 

 Cambrian (the Ølandicus zone) this continental region was inundated by a 

 new trangression, which as far as Norway was concerned went from North 

 to South. Now the Fenno-Scandinavian regions lost their special faunistic 

 character. 



The following scheme may be made for our Lower Cambrian series: 



I. Lower Continental stage (=- Lower and Middle Parts of the Lower 



Cambrian), the Sparagmite formation. 



II. The Upper Marine stage (= Upper Part of the Lower Cambrian). 



a. Zone containing Sandy shales with trails. 



b. Zone with Disciuella Hoi sti. 



c. Zone with Hohnia Kjerulfi. » 



d. Zone with Stremiella Linnarssoni. 



Printed April 20th 1917. 



