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The fauna of the phosphate beds of the Park City formation in Idaho, Wyoming, and Utah

Girty, George Herbert, 1869-1939, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1910. 1910

The fauna of the so-called Dakota formation of northern central Colorado and its equivalent in south

Reeside, John B. (John Bernard), 1889-1958, author.
[Washington] : [Department of the Interior, United States Geological Survey], [1925] 1923

Geology and paleoecology of the Cottonwood Creek delta in the Eocene Tipton Tongue of the Green Rive

Roehler, Henry W.
Denver, CO : Dept. of the Interior, U.S. Geological Survey ; [Washington, D.C.] : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988. 1988

Wasatch fossils in so-called Fort Union beds of the Powder River basin, Wyoming and their bearing on

Wegemann, Carroll H., author.
Washington : Department of the Interior, United States Geological Survey, 1917. 1917