Country:
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USA
|
Province:
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Arkansas, Crawford Co.
|
Locality:
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Mountainburg qu., T.10N., R.29W.
|
Layer:
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Atokan, 1000 m above base |
Lower Boundary:
|
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|
Upper Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|
Georeference:
|
|