258 



OUR COMMON BRITISH FOSSILS. 



see them forming the hills which flank the railway 

 on the right-hand side. Numerous quarries, for road- 

 material, limestone, and ironstone, are opened in them, 

 where plenty of fossil moUusca can be collected. 

 Perhaps the best collecting-grounds for Oolitic fossils 

 in Lincolnshire are at Weldon, Wakerley, the neigh- 

 bourhood of Stamford (as at Squire's Stone quarry), 

 Wild's Ford, Kingscliffe, Stibbington, Whittering, 

 Wrawly, Brigg, Market Rasen, and Horncastle. 



We naturally turn to the West of England, how- 



Fig. 22,<),—Gervillea. 



ever, for Oolitic fossils. The great Oolite formation 

 extends from the middle of Lincolnshire to Gloucester- 

 shire, and quarries for various purposes are opened 

 in it more or less along its entire course, where fossils 

 abound, among w^hich bivalves and univalves are the 

 most numerous. There are also plenty of places in 

 Bedfordshire (as in Cowper's county), Rutland- 

 shire, Buckinghamshire, and Oxfordshire, as well as 

 Gloucestershire (which last county is nothing if not 

 Oolitic), Somersetshire, Wiltshire, Dorsetshire, etc. 



