Dicksburg Hills Sandstone Member of Patoka Formation of McLeansboro Group (IN)
Late Pennsylvanian (Missourian)
Type locality: in "The Rock Bluffs," in SW/4 sec. 18, T. 1 N., R. 10 W., in northeastern part of the western hill of the Dicksburg Hills, Knox Co., southwestern IN (Malot, 1947).
Illinois basin
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