Put-in-Bay Dolomite
Stratigraphic range: Silurian
Type	Formation
Unit of	Bass Islands Group
Underlies	Raisin River Dolomite
Overlies	St. Ignace Dolomite
Location
Region	Michigan
Country	United States

The Put-in-Bay Dolomite is a geologic formation in Michigan and Ohio. It preserves fossils dating back to the Silurian period. The type locality is South Bass Island in western Lake Erie.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 22 June 2014.^{[better source needed]}