1. Porvenir formation (new name)--and other revisions of nomenclature of Mississippian, Pennsylvanian, and lower Permian rocks, southeastern Sangre de Cristo Mountains, New Mexico / by Elmer H. Baltz and Donald A. Myers. Baltz, Elmer H. (Elmer Harold), 1927-2015 [Reston, Va.] : United States Department of the Interior, Geological Survey, 1984.Washington : United States Government Printing Office. Book Online
2. Paleozoic rocks in the Black Pine Mountains, Cassia County, Idaho / by J. Fred Smith. Smith, J. Fred (Joe Fred), 1911-1982 [Reston, Va.] : United States Department of the Interior, Geological Survey, 1983.Washington : United States Government Printing Office. Book Online
3. Upper Paleozoic carbonate bank in east-central Idaho--Snaky Canyon, Bluebird Mountain, and Arco Hills Formations and their paleotectonic significance : three new formations in east-central Idaho and their paleotectonic significance / by Betty Skipp [and three others]. Skipp, Betty, 1928- [Reston, Va.] : United States Department of the Interior, Geological Survey, 1979.Washington : United States Government Printing Office Book Online
4. Paleozoic and Mesozoic stratigraphy of the northern part of the Ruby Range, southwestern Montana / by Russell G. Tysdal. Tysdal, Russell G. [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1976.Washington : United States Government Printing Office. Book Online
5. Stratigraphic and structural relationships of the Brimfield group in northeast-central Connecticut and adjacent Massachusetts / by John D. Peper, M.H. Pease, Jr. and Victor M. Seiders ; prepared in cooperation with the Connecticut State Geological and Natural History Survey and the Massachusetts Department of Public Works. Peper, John D. [Reston, Va.] : United States Department of the Interior, Geological Survey, 1975.Washington : United States Government Printing Office. Book Online
6. Changes in nomenclature of upper Precambrian to lower Paleozoic(?) formations in the Natick quadrangle, eastern Massachusetts, and their tentative correlations with rocks in Rhode Island and Connecticut / by Arthur E. Nelson ; prepared in cooperation with the Commonwealth of Massachusetts, Department of Public Works. Nelson, Arthur E. (Arthur Edward), 1922- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974.Washington : United States Government Printing Office. Book Online
7. Checklist of North American late Paleozoic coral species (Coelenterata, Anthozoa) / by William J. Sando. Sando, William Jasper [Reston, Va.] : United States Department of the Interior, Geological Survey, 1974.Washington : United States Government Printing Office. Book Online
8. Silurian, Devonian, and Mississippian Formations of the Funeral Mountains in the Ryan Quadrangle, Death Valley region, California / by James F. McAllister ; work done partly in cooperation with the California Division of Mines and Geology. McAllister, James F. (James Franklin), 1911-2000 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974.Washington : United States Government Printing Office. Book Online
9. Paleozoic stratigraphy in the northwest coastal area of Prince of Wales Island, southeastern Alaska : Paleozoic rocks are divided into 10 newly named formations and are briefly described / by G. Donald Eberlein and Michael Churkin, Jr. Eberlein, G. Donald, 1920-2003 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970.Washington : United States Government Printing Office. Book Online
10. Element distribution in some Paleozoic black shales and associated rocks : the content and association of minor elements in different black-shale environments / by James D. Vine. Vine, James David, 1921- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.Washington : United States Government Printing Office. Book Online
11. Geology of the Bear Peak area, Dona Ana County, New Mexico : a study of the southern part of the San Andres Mountains, with emphasis on Paleozoic stratigraphy / by George O. Bachman and Donald A. Myers. Bachman, George O. (George Odell) [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.Washington : United States Government Printing Office. Book Online
12. Six new Paleozoic and Mesozoic formations in east-central Alaska : definition and description of some sedimentary rocks in the Kandik basin / by Earl E. Brabb. Brabb, Earl E., 1929- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.Washington : United States Government Printing Office. Book Online
13. Stratigraphy of the Albemarle Group of the Carolina slate belt in central North Carolina / by Arvid A. Stromquist and Harold W. Sundelius. Stromquist, Arvid A. [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.Washington : United States Government Printing Office. Book Online
14. A bibliographic index of North American late Paleozoic Hyolitha, Amphineura, Scaphopoda, and Gastropoda : an objective paleontologic compilation through 1966 extended from and including references in a similar index by Stuart Weller, 1898 / edited by Ellis L. Yochelson and Burnett W. Saunders. [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1967.Washington : United States Government Printing Office. Book Online
15. Carbonate rocks of Cambrian and Ordovician age, Northhampton and Bucks Counties, eastern Pennsylvania, and Warren and Hunterdon Counties, western New Jersey / by Avery Ala Drake, Jr. Drake, Avery Ala, 1927- Washington, D.C. : United States Department of the Interior, Geological Survey, 1965.Washington, D.C. : Government Printing Office Book Online
16. Nomenclature and correlation of lithologic subdivisions of the Jefferson and Three Forks Formations of southern Montana and northern Wyoming / Charles A. Sandberg. Sandberg, Charles A. (Charles Albert), 1929- Washington, D.C. : United States Department of the Interior, Geological Survey, 1965.Washington, D.C. : Government Printing Office Book Online
17. Paleozoic stratigraphy of the southern part of the Mule Mountains, Arizona / by Philip T. Hayes and Edwin R. Landis. Hayes, Philip T. (Philip Thayer), 1923- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1965.Washington : United States Government Printing Office. Book Online
18. Distribution of thorium and uranium in three early Paleozoic Plutonic Series of New Hampshire / by John B. Lyons. Lyons, John B. Washington, D.C. : United States Department of the Interior, Geological Survey, 1964.Washington, D.C. : Government Printing Office. Book Online
19. The Hovey Group of northeastern Maine / by Louis Pavlides. Pavlides, Louis, 1921- Washington, D.C. : United States Department of the Interior, Geological Survey, 1964.Washington, D.C. : Government Printing Office Book Online
20. Paleozoic and Cenozoic rocks in the Alpine-Nutrioso area, Apache County, Arizona / by Chester T. Wrucke. Wrucke, Chester T., 1927- Washington, D.C. : United States Department of the Interior, Geological Survey, 1961.Washington, D.C. : Government Printing Office. Book Online