The Breathitt Formation is a geologic formation in Kentucky which preserves fossils dating back to the Pennsylvanian period.Chesnut, D.R., Jr., 1992, Stratigraphic and structural framework of the Carboniferous rocks of the central Appalachian basin in Kentucky: Kentucky Geological Survey Bulletin, 11th series, no. 3, 42 p.
See also List of fossiliferous stratigraphic units in Kentucky
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