134 



PROCEEDINGS COTTESWOLD CLUB 



the now enclosed "Fort" Quarry.'^* It was from the Lower 

 Trigofiia-Grit here that Lycett and Wright obtained such 

 a number of beautifully-preserved lamellibranchs, many of 

 which were new. The Buckmani-Grit is the bed that imme- 

 diately overlies the Lower Trigonia-Gvit It is i foot 9 inches 

 thick, and has yielded Terehratula Buckinani,'Da.v.^ 



Fig 5. — Map of Rodborough Hill (3 inches = i mile) to show the positions of the quarries. 



In his work on " The Cotteswold Hills,"- Lycett identified 

 the present Lower Trigonia- and Buckmani-Gvits with the 

 Gryphite-Grit ; but Dr Wright, two years later (1859), stated 

 his opinion that the bottom foot of Lycett's " Gryphite Grit " 

 was Lower Trigonia-Grit. Lycett, however, while admitting 

 that Wright's description of this portion of the bed was correct, 

 failed to see how it could be separated from the rest of his 

 Gryphite-Grit at Rodborough, although he thought it might be 

 possible where the subdivisions were thicker, and therefore the 

 successive characteristic faunas more distinct.^ 



I Proc. Cotteswold Nat. F.C., vol. xvi., pt. i (1907), p. 72 ; see also S. S. Buckraan, Quart. Journ. 

 Geol. Soc, vol. li, (1895), pp. 394-39 5. 2 " Cotteswold Hills" (1857), p. 62. 3 Quart. Journ. Geol. 

 Soc, vol. xvi. (1S59), pp. 44-45., 



