Fossils from the Cason Mine: Girvanellas (replaced by iron and manganese oxides). Independence County, Arkansas. 1918.
Dates
Date Taken
1918
Summary
Fossils from the Cason Mine: Girvanellas (replaced by iron and manganese oxides) on weathered surface of St. Claire limestone. Natural size. Independence County, Arkansas. 1918. Plate 8-A in U.S. Geological Survey. Bulletin 734. 1923.
Summary
Fossils from the Cason Mine: Girvanellas (replaced by iron and manganese oxides) on weathered surface of St. Claire limestone. Natural size. Independence County, Arkansas. 1918. Plate 8-A in U.S. Geological Survey. Bulletin 734. 1923.
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