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• Glencoe Member
  |category6=Galena Group |tree2=Galena Group
  3 KB (405 words) - 17:25, 12 January 2017
• Spechts Ferry Formation
  |category6=Galena Group |tree2=Galena Group
  5 KB (660 words) - 17:23, 12 January 2017
• St. James Member
  |category7=Galena Group |tree2=Galena Group
  3 KB (418 words) - 17:02, 12 January 2017
• Glenhaven Member
  |category6=Galena Group |tree2=Galena Group
  3 KB (428 words) - 17:19, 12 January 2017
• Dunleith Formation
  |category7=Galena Group |tree2=Galena Group
  6 KB (860 words) - 16:48, 12 January 2017
• New London Member
  |category7=Galena Group |tree2=Galena Group
  3 KB (456 words) - 16:50, 12 January 2017
• Kings Lake Formation
  |category6=Galena Group |tree2=Galena Group
  4 KB (519 words) - 17:20, 12 January 2017
• Nachusa Formation
  |category6=Platteville Group |tree2=Platteville Group
  4 KB (568 words) - 17:58, 12 January 2017
• Cincinnatian Series
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...llinois the Cincinnatian Series includes the Cape Limestone, the Maquoketa Group, and the Girardeau Limestone (fig. O-25).
  5 KB (719 words) - 16:01, 12 January 2017
• Platteville Group
  |category6=Platteville Group |tree2=Platteville Group
  5 KB (759 words) - 17:29, 12 January 2017
• Maquoketa Shale Group
  |category4=Maquoketa Shale Group |tree1=Maquoketa Shale Group
  6 KB (872 words) - 16:05, 12 January 2017
• Trentonian Stage
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...in New York State, is represented in Illinois by the strata of the Galena Group.
  2 KB (304 words) - 16:37, 12 January 2017
• Guttenberg Formation
  |category6=Galena Group |tree2=Galena Group
  5 KB (645 words) - 17:17, 12 January 2017
• Ottawa Limestone Megagroup
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...dolomite Dutchtown and Joachim Formations in the upper part of the Ancell Group. At the base in northern Illinois it locally includes the Daysville Dolomit
  3 KB (372 words) - 16:34, 12 January 2017
• Tyson Member
  |tree2=Galena Group ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
  2 KB (319 words) - 17:22, 12 January 2017
• Quimbys Mill Formation
  |category6=Platteville Group |tree2=Platteville Group
  4 KB (623 words) - 17:30, 12 January 2017
• Mosalem Formation
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...ick exposures can be seen in the Mississippi River bluffs 6 miles south of Galena (SE SW SE 21, 27N-1E) and south of Pearl City, Stephenson County (NE cor. 1
  4 KB (585 words) - 20:29, 11 January 2017
• Ordovician System
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...re deposited. These impure sediments join the St. Peter to form the Ancell Group. <br>
  12 KB (1,815 words) - 15:57, 12 January 2017
• Silurian System
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...mounds, and they are well exposed in the Mississippi River bluffs from the Galena area southward to the Rock Island vicinity and also along tributary valleys
  14 KB (2,077 words) - 18:14, 11 January 2017

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