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- |tree3=Kenwood Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.3 KB (354 words) - 17:59, 11 January 2017
- |tree3=Spring Grove Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.2 KB (290 words) - 20:29, 9 January 2017
- ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...Spring Grove Member (dolomite and dolomitic limestone), and the Davenport Member (lithographic limestone) at the top.5 KB (632 words) - 17:46, 11 January 2017