Cup shaped, ringed pits in the upper surface of a Chlorellopsis reef. Moffat County, Colorado. 1925.
Dates
Date Taken
1925-08-01
Summary
Cup shaped, ringed pits in the upper surface of a Chlorellopsis reef, showing their general uniformity of size and arrangement. At the left they are arranged in fairly definite row. The vermiculate surface between the pits shows best in a small area a little to the right of the center. Moffat County, Colorado. August 1, 1925. Plate 38-B in U.S. Geological Survey. Professional paper 154. 1929.
Summary
Cup shaped, ringed pits in the upper surface of a Chlorellopsis reef, showing their general uniformity of size and arrangement. At the left they are arranged in fairly definite row. The vermiculate surface between the pits shows best in a small area a little to the right of the center. Moffat County, Colorado. August 1, 1925. Plate 38-B in U.S. Geological Survey. Professional paper 154. 1929.
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