THE TRIASSIC PERIOD. 



33 



it had been absent formerly. The Muschelkalk fauna has been thought 

 to indicate that the sea in which it lived was not the open ocean, 

 but rather a body of water comparable to the Black Sea or the Baltic. 1 

 As the name indicates, limestone makes up the larger part of the 

 formation. 



The third formation, the Keuper, resembles the first, and, like it, 

 is marine in its upper portion, and is followed by the marine beds of 



Fig. 337. — Sketch-map of Europe, indicating the areas of sedimentation during the 

 late Triassic. The broken lines represent areas of non-marine deposition; the 

 full lines, areas of marine deposits. (After De Lapparent.) 



the Jurassic period. The Keuper contains a little coal (not workable), 

 a common accompaniment of shallow-water and marsh formations. 



England. — The chief point of difference between the Trias of Ger- 

 many and that of England lies in the fact that the marine member 

 of the former is absent from the latter. Otherwise the system cor- 

 responds in the two countries, so far as general characters are 

 concerned. The absence of the marine division from the system in 



1 Kayser, op. cit., p. 286. 



