ZONE OP LYTOCERAS JURENSE. 



143 



Whilst this sheet was passing through the press my esteemed friend Mr. W. W. 

 Stoddart, E.G.S., of Bristol, kindly sent me a detailed section of Dundry Hill, measured 

 by himself, with the vertical thickness and barometrical height of the chief beds in the 

 section in feet. This I have endeavoured to embody in the form adopted in this work ; 

 and I thank my friend for the same. 



Section of Dundry Hill. Dip 20° N.N.E. 



Period. 



Inferior Oolite ■{ 



Lias 



Rh-t.tic 



Trias. 



Zone. 



Parkinsoni 

 about 23 fe 



NI j 



?et ( 



HUMPHRIESIANUM 



about 20 feet 



JURENSE 1 



about 2 feet j 



BiFRONS ") 



4 feet j 



Henleyi ") 



1 foot 3 



Obtusus ■< 



about 80 feet j 



TURNERI (■ 



about 26 feet ^ 



BUCKLANDI I 



about 120 feet \ 



Planorbis I 



about 143 feet \ 



AVICULA CONTORTA ' 



about 65 feet 



Keuper 

 about 78 feet 



No. 



10 

 11 



12 



13 

 14 



15 

 16 



Strata. 



Freestone 



Ragstone 



Coral 



Echinus 



Brachiopoda . 

 Conchifera 

 Cephalopoda. 

 Ironshot 



Midford Sands 

 Upper Lias ... 

 Middle Lias ... 



Limestone and Marls 



Limestones and Marls 

 Limestone 



Limestones and Marls . 

 Limestones and Marls 



Vertical 



Barometri- 



Thickness. 



cal Height. 



ft. 



in. 



ft. 



16 



9 



769 



6 









1 









1 



6 





4 



8 





8 









3 









2 







614 



, _ i Argillaceous Limestones 

 '' Clays 



and 



18 Variegated Marls 



2 



4 



1 



80 



24 



2 3 



120 



143 



65 



523 



367 



150 



