Slabs of Gryphaea-bearing impure limestone from the upper part of the Kiamichi clay at the locality of slw00932. Grayson County, Texas. 1914.
Dates
Date Taken
1914
Summary
Slabs of Gryphaea-bearing impure limestone from the upper part of the Kiamichi clay at the locality of slw00932; the shells belong chiefly to the species Gryphaea navia Hall. Grayson County, Texas. Circa 1914. Plate 20-B in U.S. Geological Survey. Professional paper 120. 1919.
Summary
Slabs of Gryphaea-bearing impure limestone from the upper part of the Kiamichi clay at the locality of slw00932; the shells belong chiefly to the species Gryphaea navia Hall. Grayson County, Texas. Circa 1914. Plate 20-B in U.S. Geological Survey. Professional paper 120. 1919.
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