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• Historical:Pennsylvanian Subsystem
  Figure P-3A.jpg|{{file:Figure P-3A.jpg}} Figure P-3B.jpg|{{file:Figure P-3B.jpg}}
  24 KB (3,468 words) - 16:01, 20 January 2017
• St. Louis Limestone
  Figure M-1B.jpg|{{file:Figure M-1B.jpg}} Figure M-1D.jpg|{{file:Figure M-1D.jpg}}
  4 KB (560 words) - 15:25, 22 October 2019
• Pennsylvanian Subsystem
  the idealized sequence shown in figure P-7 is rarely complete, the units that are present have the same relative p Figure P-3A.jpg|{{file:Figure P-3A.jpg}}
  24 KB (3,539 words) - 16:05, 20 January 2017
• Historical:Ogle Till Member
  ...s less than 20 feet thick. The geographic extent of the member is shown in figure 6.
  3 KB (413 words) - 22:27, 3 January 2017
• Desmoinesian Series
  Figure P-2.jpg|{{file:Figure P-2.jpg}}
  4 KB (509 words) - 19:49, 24 January 2017
• Historical:Cambrian System
  Figure C-1A.jpg|{{File:Figure C-1A.jpg}} Figure C-1B.jpg|{{File:Figure C-1B.jpg}}
  12 KB (1,723 words) - 15:46, 23 November 2016
• Cambrian System
  Figure C-1A.jpg|{{File:Figure C-1A.jpg}} Figure C-1B.jpg|{{File:Figure C-1B.jpg}}
  12 KB (1,792 words) - 20:42, 11 January 2017
• Ogle Till Member
  ...s less than 20 feet thick. The geographic extent of the member is shown in figure 6.
  3 KB (488 words) - 22:08, 12 January 2017

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