216 



OUR COMMON BRITISH FOSSILS. 



by the fact that Mr. G. R. Vine obtained, by washing 

 from six to eight tons of Wenlock shale, a vast number 

 of specimens of fossil Polyzoa, among which the genera 



Fig. 176. Fenestella nodnlosa (Carboniferous 

 limestone and shales). 



Fig. 177. Glauconomg 

 elegans. 



Stomatopora, Spiropora, Glauconome, Hornera, Fenes- 

 tella, etc., were abundant. Certain localities are dis- 

 tinguished for the abundance of fossil sea-mats they 



Fig. 178. 

 Vinr.ularia. 



Fig. 180. Portion of 

 Polypora (magnified). 



(magnified). 



Fig. -i^. Fenestella 

 membranacea. 

 (magnified). 



have yielded, but it is really because there have been 

 enthusiastic geologists to work them. Mr. Vine has 

 astonished palaeontologists by the great number of 



