Geological Arrangement of British Fossil Shells, 

 SIMPLE UNIVALVES-^ continued. 



29 



Genera. 



Scalaria 



Seraphs 

 S^rpula 



1 Sigaretus 

 5 Solarium 



1 Terebellum 

 25 TVochus 



Formations. 



Oxford clay, and 



Brora limestone 

 Forest marble 

 Lower green sand, 



with two others - 

 Upper green sand - 

 Gault,and chalk marl 



(Mantell) 

 Plastic clay, and Lon- 

 don clay 

 London clay 

 Crag, and sand of 



plastic clay 

 London clay 

 Crag 



London clay 

 Lias, Kimmeridge 

 Inferior oolite 

 Fuller*s earth rock 

 Cornbrash, Forest 



marble 

 Clay of great oolite 



(2, Smith) 

 Coral rag, green 

 Sand, and London 



clay 

 Upper chalk 

 Above the upper fresh 



water, Isle of Wight 



(T.) 

 Lower fresh water, 1 

 London clay 

 Portland limestone 

 London clay 

 London clay 

 Blue lias, and lias 



marl 

 Inferior oolite (and 2 



others) 

 Fuller's earth ? 

 Clay over great oolite 



(2, Smith) 

 Coral rag 

 Kimmeridge clay (l. 



Smith) 

 Portland rock 

 Gault, 1 (1, Man 



tell) 



10 



11 



14 



Genera. 



Formations. 



14 



Upper chalk, 2 (2, 



De la Beche) 

 London clay 

 Crag 



Crag and lias 

 Turbo - Mountain limestone 



Lias (De la Beche) 

 Under oolite 

 Coral rag 

 Kimmeridge clay (l. 



Smith) 

 Upper green sand - 

 London clay 

 Crag 



Turritella - Mountain limestone 

 Lias shale ? 

 Inferior oolite (3, Co- 

 neybeare and Smith) 

 Stonesfield slate ? 

 Coral rag, and shelly 

 limestone of Brora 

 Forest marble, and 



clay ? - 

 Upper green sand 

 Plastic clay ? (Coney- 



beare) 

 London clay 

 London clay, and crag 

 Vermicularia Inferior oolite *» 

 (or Vermetus) Upper oolite, and 

 Portland 

 Coral rag 



Lower green sand - 

 Upper green sand - 

 Chalk marl, and chalk 



(1, Mantell) 



London clay 



Vivfpara - Weald clay, and mar- 



(afterwards ble 



Paludina) Fresh water (lower 



and upper) 



Crag, doubtful 



Voluta - London clay 



London clay, and up- 

 per marine 

 Crag 



Upper marine ? 

 Volvaria - London clay 



I 



