Fucoid beds near top of Decorah shale. Hennepin County, Minnesota. 1914.
Dates
Date Taken
1914
Summary
Fucoid beds near top of Decorah shale, characteristic of the formation in the area, the fucoid stems are weathered in relief on the bedding surface. Hennepin County, Minnesota. 1914. Plate 12 in U.S. Geological Survey. Folio 201. 1916.
Summary
Fucoid beds near top of Decorah shale, characteristic of the formation in the area, the fucoid stems are weathered in relief on the bedding surface. Hennepin County, Minnesota. 1914. Plate 12 in U.S. Geological Survey. Folio 201. 1916.
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