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- |category4=Mammoth Cave Limestone Megagroup |category6=Keokuk Limestone3 KB (348 words) - 22:36, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |category6=Keokuk Limestone4 KB (577 words) - 22:33, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |tree1=Mammoth Cave Limestone Megagroup4 KB (501 words) - 22:21, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |category6=Limestone6 KB (811 words) - 22:41, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |tree1=Mammoth Cave Limestone Megagroup2 KB (303 words) - 22:26, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |tree1=Mammoth Cave Limestone Megagroup2 KB (285 words) - 22:51, 18 January 2017
- |category4=Mammoth Cave Limestone Megagroup |tree1=Mammoth Cave Limestone Megagroup5 KB (674 words) - 16:18, 22 October 2019
- |category4=Mammoth Cave Limestone Megagroup |tree1=Mammoth Cave Limestone Megagroup6 KB (819 words) - 22:40, 17 January 2017
- ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. In earlier reports these strata were called "Carboniferous limestone," or "Lower Carboniferous" (Worthen, 1866) to differentiate them from the u10 KB (1,390 words) - 15:54, 13 January 2017