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|tree3=Anvil Rock Sandstone Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

|category7=Sandstone |tree3=Copperas Creek Sandstone Member

|tree3=Lawson Shale Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

|tree3=Bankston Fork Limestone Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...ta in Illinois above the base of the Copperas Creek (Anvil Rock) Sandstone Member. About 400 feet of additional Pennsylvanian strata younger than those encou

|tree3=Brereton Limestone Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...a separate and distinct classification, thus removing cyclothems from the rock-stratigraphic classification, where they had been used in place of formatio

...wever, the three lowest formations are all well developed, particularly in Rock Island and Mercer Counties. ...a separate and distinct classification, thus removing cyclothems from the rock-stratigraphic classification, where they had been used in place of formatio

...wever, the three lowest formations are all well developed, particularly in Rock Island and Mercer Counties. ...a separate and distinct classification, thus removing cyclothems from the rock-stratigraphic classification, where they had been used in place of formatio

...22, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press). ...cause it does not extend to the Davis Coal, currently considered the basal member of the Carbondale (Figure 4-2). Nonetheless, this is a good reference for t