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Fusulinidae from the Graford Formation and Winchell Limestone, Canyon Group, Upper Pennsylvanian, in

Myers, Donald A., 1921- author.
Washington : U.S. Department of the Interior, Geological Survey, 1967. 1967

Geology of the Grosvenor quadrangle, Brown and Coleman Counties, Texas

Terriere, Robert T., 1926- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1960. 1960

Palynological studies of lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylva

Kosanke, Robert M. (Robert Max), author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1988. 1988

Pennsylvanian and Permian rocks of the southern Inyo Mountains, California

Merriam, Charles W. (Charles Warren), 1905-1974 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey 1957

Pennsylvanian formations of southwest Virginia

Miller, Ralph L. (Ralph LeRoy), 1909-1991, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969. 1969

Revision of the type Mankomen Formation (Pennsylvanian and Permian), Eagle Creek area, eastern Alask

Richter, Donald H., author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1975. 1975

Sedimentology and paleogeographic significance of six fluvial sandstone bodies in the Maroon Formati

Johnson, Samuel Y., author.
Washington, D.C. : Department of the Interior, U.S. Geological Survey, 1987. 1987

Sturgis Formation (Upper Pennsylvanian), a new map unit in the western Kentucky coal field

Kehn, Thomas M., author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1973. 1973

The Supai Group -- subdivision and nomenclature

McKee, Edwin D. (Edwin Dinwiddie), 1906-1984, author.
[Reston, Va.] : United States Department of the Interior, Geological Survey, 1975. 1975

The Upper Paleozoic Madera group in the Manzano Mountains, New Mexico

Myers, Donald A., 1921- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972. 1972