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Country:
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USA 
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Province:
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Arkansas, Van Buren Co. 
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Locality:
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Shirley, 2 mls SE of 
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| 
Layer:
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Dye Shale or Trace Creek Shale | 
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Lower Boundary:
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UAR Woolsey--Dye Shale, "caprock", 311.7 million years
 
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| 
Upper Boundary:
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U  Morrowan (Bloydian)--Atokan[MOR--ATO], 310.4 million years
 
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| 
Georeference:
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