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Country:
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USA 
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Province:
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Arkansas, Washington Co. 
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Locality:
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Fayetteville, 1.2 mls W of, sec.20 
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Layer:
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Fayetteville Fm., middle portion | 
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Lower Boundary:
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UAR basal--lower shale of Fayetteville, 327 million years
 
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| 
Upper Boundary:
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UAR Limest.--upper shale of Fayetteville, 324.8 million years
 
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Georeference:
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