316 



CHALK OF FAXOE. 



Fig. 276. 



[Ch. XVII. 



Mosasaurus Campe/ri. Original more than three feet long. 



Fig. 277. 



freestone, the principal member of the Maestricht beds. Among the 

 fossils common to the Maestricht and white chalk may be instanced 

 the echinoderm, fig. 27T. 



I saw proofs of the previous denudation of the white chalk ex- 

 hibited in the lower bed of the Maestricht 

 formation in Belgium, about 30 miles S.W. 

 of Maestricht, at the village of Jendrain, 

 where the base of the newer deposit con- 

 sisted chiefly of a layer of well-rolled, 

 black, chalk-flint pebbles, in the midst of 

 which perfect specimens of Thecidea ra- 

 dians and Belemnites mucronatus are im- 

 bedded. 



Chalk of Faxoe. — In the island of See- 

 land, m Denmark, the newest member of 

 the chalk series, seen in the sea-cliffs at 

 Stevensklint resting on white chalk, with flints, is a yellow lime- 

 stone, a portion of which, at Faxoe, where it is used as a building- 

 stone, is composed of corals, even more conspicuously than is usually 



Fig. 278. 



Hemipneustes radiatus, Ag. 



Spatanffus radiatus, Lam. 



Chalk of Maestricht and white 



chalk. 



Nautilus Danicus, SchL Faxoe, Denmark. 



