1. Oliverian domes, related plutonic rocks, and mantling Ammonoosuc volcanics of the Bronson Hill anticlinorium, New England Appalachians Author/Creator: Leo, Gerhard W. Publication/Creation: Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1516-1520. Access & Availability: Loading
2. Oliverian domes, related plutonic rocks, and mantling Ammonoosuc volcanics of the Bronson Hill anticlinorium, New England Appalachians Author/Creator: Leo, Gerhard W., author Publication/Creation: Washington : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
3. On the nature of Polylopia, Author/Creator: Yochelson, Ellis L. 1928-2006. (Ellis Leon) Publication/Creation: Washington : U.S. Govt. Print. Off, 1968 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 591-593. Access & Availability: Loading
4. Ordovician and older rocks of the Bayhorse area, Custer County, Idaho Author/Creator: Hobbs, S. W. 1911- (Samuel Warren), author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
5. Ordovician and Silurian coral faunas of western United States Author/Creator: Duncan, Helen, author Publication/Creation: [Washington, D.C.] : [U.S. Department of the Interior, U.S. Geological Survey], [1956] Resource Type: Book Access & Availability: Loading
6. Ordovician and Silurian coral faunas of western United States Author/Creator: Duncan, Helen Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1956 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1021 A-N. Access & Availability: Loading
7. Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho -- a graptolite zone reference section Author/Creator: Carter, Claire, author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1977 Resource Type: Book Access & Availability: Loading
8. Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho--a graptolite zone reference section Author/Creator: Carter, Claire Publication/Creation: Washington : U.S. Govt. Print. Off, 1977 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1019-1022. Access & Availability: Loading
9. Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas Author/Creator: Dover, James H., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1980 Resource Type: Book Access & Availability: Loading
10. Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas Author/Creator: Dover, James H. Publication/Creation: Washington : U.S. Govt. Print. Off, 1980 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1086-1090. Access & Availability: Loading
11. Ordovician brachiopods, trilobites, and stratigraphy in eastern and central Nevada Author/Creator: Ross, Reuben James, 1918- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1970 Resource Type: Book Access & Availability: Loading
12. Ordovician brachiopods, trilobites, and stratigraphy in eastern and central Nevada Author/Creator: Ross, Reuben James, 1918- Publication/Creation: Washington : U.S. Govt. Print. Off, 1970 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 634-639. Access & Availability: Loading
13. Ordovician conodonts of the Marathon basin, Texas Author/Creator: Graves, Roy William, 1915- Publication/Creation: Rolla, Mo. : [publisher not identified], 1941 Resource Type: Book Access & Availability: Loading
14. Ordovician graptolites of the Basin Ranges in California, Nevada, Utah, and Idaho Author/Creator: Ross, Reuben James, 1918- author Publication/Creation: Washington, D.C. : United States Department of the Interior, Geological Survey, 1963 Resource Type: Book Access & Availability: Loading
15. Ordovician graptolites of the Basin Ranges in California, Nevada, Utah, and Idaho Author/Creator: Ross, Reuben James, 1918- Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1963 Resource Type: Book Access & Availability: Loading
16. The ordovician symposium Author/Creator: El Paso Geological Society (Tex.) Publication/Creation: El Paso, Texas : [publisher not identified], 1969 Resource Type: Book Access & Availability: Loading
17. The Ordovician system : proceedings of a Palaeontological Association symposium, Birmingham, September 1974 Author/Creator: Ordovician System Symposium Birmingham, England) (1974 Publication/Creation: Cardiff : Published for The Paleontological Association by the University of Wales Press and the National Museum of Wales, 1976 Resource Type: Book Access & Availability: Loading
18. The Ordovician system in Australia, New Zealand and Antarctica : correlation chart and explanatory notes Publication/Creation: Ottawa, Ont. : Available from IUGS Secretariat, 1981 Resource Type: Book Access & Availability: Loading
19. The ordovician system in Canada : correlation chart and explanatory notes Author/Creator: Barnes, Christopher R. Publication/Creation: Ottawa : IUGS Secretariat, 1981 Resource Type: Book Access & Availability: Loading
20. The Ordovician system in the United States : correlation chart and explanatory notes Publication/Creation: [Paris] : International Union of Geological Sciences, [1982] Resource Type: Book Access & Availability: Loading
21. Ordovician trilobites of Argentina Author/Creator: Harrington, H. J. 1910-1973. (Horacio Jaime) Publication/Creation: Lawrence : University of Kansas Press, 1957 Resource Type: Book Access & Availability: Loading
22. The Ordovician-Silurian unconformity in southeastern Indiana Publication/Creation: Bloomington, Ind. : State of Indiana, Dept. of Natural Resources, 1986 Resource Type: Book Access & Availability: Loading
23. Otter Creek coral bed and its fauna, east-central Kentucky Author/Creator: Simmons, George Clarke, 1923- Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no.1243-1244. Access & Availability: Loading
24. Otter Creek coral bed and its fauna, east-central Kentucky Author/Creator: Simmons, George Clarke, 1923- author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1967 Resource Type: Book Access & Availability: Loading