60 



GASTEROPODA OF THE INFERIOR OOLITE. 



Profile No. 8 1 . — Nailsworth Hill and District. 



(Section complete.) 



IS I 





Puller's Earth. 



3' 0" Oolite with few fossils. 



Clypeus-gvit series, with bed of Terebratula qlobata 

 8' 0" towards the top. 



N erinaea Guisei below. 



4' 0" Upper Trigonia-grit. 



4' 0" Grit without gryphite. 



1 

 35' 0" j 



| Bored-bed. 



''hick-bedded Oolitic Freestones. 



Verincea-bed in upper part, 2 but no " Oolite marl " with 

 T. fimbria. 



ni nu Pea-grit, with several species of Nerincea, especially at 

 Longford's Mill. 



Broken-shell Limestone and Oolite, with a few Gas- 

 25' 0" teropods much rolled. (Lower Limestone of Mr. 

 "Witchell.) 



q, ~„ Sandy, with a shell-bed towards the base. Opalinus- 

 zone. 



_, ft „ Gloucestershire Cephalopoda-bed, or zone of Am. 

 radians. 



96' 0" 

 Total. 



Sands. 



1 Partly derived from observation, partly from other sources. 



2 Another bored-bed below the Nerinaeas. 



A Opalinus- or torulosus-zone. b Radians- or jurensis-zone. There is no intention here of 

 entering into minute particulars as to the exact boundaries. The whole question of the opalinus-zone 

 in the Cotteswolds is one of considerable obscurity. The Gasteropoda are scarce and in a bad state of 

 preservation. 



