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- |category7=Limestone |tree3=Omega Limestone Member3 KB (365 words) - 22:47, 20 January 2017
- |category7=Limestone |tree3=Bonpas Limestone Member2 KB (290 words) - 22:51, 20 January 2017
- |tree3=Trowbridge Coal Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.2 KB (231 words) - 21:30, 2 March 2018
- |tree3=Calhoun Coal Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.2 KB (289 words) - 22:54, 20 January 2017
- |tree3=Shelbyville Coal Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.2 KB (279 words) - 22:57, 20 January 2017