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Country:
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Canada 
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| 
Province:
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NW Territor.+Arctic Islands 
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Locality:
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Ellesmere Island, Blue Mts., GSC C10819 
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| 
Layer:
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base of lowest exposure, late Atokan | 
| 
Lower Boundary:
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Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
 
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| 
Upper Boundary:
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U   Atokan--Desmoinesian      [ATO--DES], 308.6 million years
 
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| 
Georeference:
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