Skip to search
Skip to main content
- Geological Survey (U.S.), issuing body62
- Geological Survey (U.S.)35
- Kentucky Geological Survey18
- Ross, Reuben James, 1918-18
- Geological Survey of Canada9
- International Union of Geological Sciences. International Subcommission on Ordovician Stratigraphy7
- Jillson, Willard Rouse, 1890-19756
- Jin, Jisuo, 1957-6
- Ruedemann, Rudolf, 1864-19566
- Ryder, Robert T.6
- Sando, William Jasper6
- Wilson, Alice Evelyn, 1881-6
- Zhan, Ren-Bin6
- Berry, William B. N.5
- Carter, Claire5
- Churkin, Michael, 1932-5
- Davis, R. A. (Richard Arnold), 1942-5
- Kentucky Geological Survey, sponsoring body5
- Pojeta, John5
- Ulrich, E. O. (Edward Oscar), 1857-19445