Ohio Shale
Stratigraphic range: Late Devonian Frasnian ~359.3–371.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Black mudshale with glacial striations (Ohio Shale)
Type	Formation
Sub-units	Cleveland Shale Chagrin Formation Huron Shale
Underlies	Bedford Shale, Berea Sandstone, and Cussewago Sandstone
Overlies	Java Formation and Olentangy Shale
Lithology
Primary	shale
Location
Region	Ohio
Country	United States

The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.

• List of fossiliferous stratigraphic units in Ohio

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.