| 
Country:
 | 
Great Britain 
 | 
| 
Province:
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England,Yorkshire 
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| 
Locality:
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Rombalds Moor, Snail Green No.2 borehole 
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| 
Layer:
 | 
R2b | 
| 
Lower Boundary:
 | 
GBY R2a--R2b(Ph.gracilis--Bil.bilinguis), 314.8 million years
 
 | 
| 
Upper Boundary:
 | 
GBY R2b (eometabilinguis--metabilinguis), 314.4 million years
 
 | 
| 
Georeference:
 | 
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