240 



Thanet Sand. 



Paris basin, so celebrated for its Eocene strata, the 

 Sables de Bracheux are the equivalents of the Thanet 

 Sand, in which the skull of a carnivorous quadruped 

 (Arctocyon primcevus) was found. 



More than 20 species of shells found in the English 

 Thanet Sand are also known in the Woolwich and 



FIG. 46. 



Natica depressa. Corbula Regiilbiensis. Aporrhais Sowerbyi. 



Group of Fossils from the Thanet Sand. 



Reading beds, and in the London Clay, and Barton 

 and Bracklesham beds. The Thanet Sands are, indeed, 

 so like those of the Woolwich and Reading beds, 

 that, but for their position, it is sometimes difficult 

 to distinguish between them, and they were formerly 



