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Country:
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USA 
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Province:
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Texas, Brewster Co. 
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Locality:
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Clay Slide, E of, E of hill 4910 
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Layer:
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Cathedral Mountain Fm. | 
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Lower Boundary:
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Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
 
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Upper Boundary:
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Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
 
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Georeference:
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