TYPE AMMONITES— IV 



June 





lA 



IB 



TABLE \~JURASSIC 

 II 



Upper Calcareous Grit 

 (Supra Coralline Beds) 



Coral Rag 



Coralline Oolite 

 (Ampthill Clay) 



Middle Calcareous Grit Oxford Oolites 

 (Lower Calc. Grit) 



Hambleton Oolite 

 (Lower Calc. Grit) 



Lower Calc. Grit (Yorks) 

 (Littlemore Sands, 

 lower part ?) 



Upper Oxford Clay 



Corallian 



Middle Oxford Clay 



Lower Oxford Clay 



Oxford Clay 



Kelloway Rock, 

 pars (Yorksliirc) 



Oxfordian 



absent ? 



Kellaways Rock 



Kellaways Clay 



Clay above Cornbrash 



Kellaways Beds 

 (Wiltshire) 

 Kellowav Rock, 

 pars (Yurks) 



Callovian 



Upper Cornbrasli 



