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Country:
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USA 
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Province:
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Utah, Millard Co. 
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Locality:
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Big Jensen Pass,  Jensen Wash 
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Layer:
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Chainman Shale, upper part | 
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Lower Boundary:
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GBY E2a1--E2a2 (cowlingense--bisulcatum), 323.5 million years
 
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Upper Boundary:
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DER E2a--E2b, 322.5 million years
 
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Georeference:
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