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STBATIFIED FOSSILIFEROTJS EOCKS 



SECONDARY PERIOD (Mesozoic Series, Phillips'). 



Super-Medial Order, 



(Conybeare) . . \ 



Cretaceous Group 



Wealden Group 



Oolitic Group 



^Triassic Group 



I Upper Chalk 

 Lower Chalk 

 Upper Greensand 

 Gault 

 Lower Greensand 

 Speeton Clay? 



[ Weald Clay 

 S Hastings Sands 

 I Purbeck beds 



f Upper. 



Portland beds 

 Kimmeridge Clay 



Middle. 



Upper Calcareous 

 Grit Coral Rag 

 Lower Calcareous 

 Grit Oxford Clay 

 Kelloway Rock 



Lower. 

 Cornbrash 

 Forest Marble 

 Bradford Clay 

 Bath Oolite 

 Fuller's Earth 

 Inferior Oolite 



Lias. 



Upper Lias 



Marlstone 



Lower Lias 



Variegated Marls 



Muschel Kalk (wanting in 

 1 England) 

 (^Variegated Sandstone. 



r 



PRIMARY PERIOD (Palaeozoic Series, Phillips) 

 Permian Group 



Medial Order, 

 (Conybeare) 



f Magnesian Limestone 

 I Lower Red Sandstone 



f Coal Measures 

 j Carboniferous Group < Millstone Grit 



L Mountain Limestone 



L 



