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LocNo: 5104Winslow Fm.
Country: USA
Province: Arkansas, Crawford Co.
Locality: Natural Dam, 3.5 mls W of
Layer: Winslow Fm.
Lower Boundary: UAR Winslow Fm. base, 310.2 million years
Upper Boundary: UAR Winslow Fm.--low. Atoka Fm., 309.5 million years
Georeference: