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The Arkansas coal field

Collier, Arthur J. (Arthur James), 1866-1939 author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1907. 1907

The Carboniferous formations and faunas of Colorado

Girty, George Herbert, 1869-1939, author.
Washington : Department of the Interior, United States Geological Survey, 1903. 1903

The fauna of the Caney shale of Oklahoma

Girty, George Herbert, 1869-1939, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1909. 1909

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

Fauna of the so-called Boone chert near Batesville, Arkansas

Girty, George Herbert, 1869-1939, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1915. 1915

Fauna of the Wewoka formation of Oklahoma

Girty, George Herbert, 1869-1939, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1915. 1915

Gaining ground the origin and evolution of tetrapods

Clack, Jennifer A., 1937-
Bloomington : Indiana University Press, c2011. 2011

New Carboniferous and Permian sponges

King, Ralph H.
Lawrence : State Geological Survey of Kansas, 1943. 1943

Stratigraphy and paleontology of the upper Carboniferous rocks of the Kansas section

Adams, George I. (George Irving), 1870-1932, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1903