DeCew Formation From Wikipedia, the free encyclopedia TypeFormationRegionOntarioCountryCanadaDeCew FormationStratigraphic range: SilurianTypeFormationLocationRegionOntarioCountryCanada The DeCew Formation is a geologic formation in Ontario. It preserves fossils dating back to the Silurian period. Earth sciences portalOntario portalPaleontology portal List of fossiliferous stratigraphic units in Ontario References Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021. This article about a specific stratigraphic formation in Ontario is a stub. You can help Wikipedia by expanding it.vte Related Articles