Sheffield Formation From Wikipedia, the free encyclopedia Geologic formation in Iowa, United States TypeFormationRegionIowaCountryUnited StatesSheffield FormationStratigraphic range: DevonianTypeFormationLocationRegionIowaCountryUnited States The Sheffield Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period. Earth sciences portalIowa portalPaleontology portal List of fossiliferous stratigraphic units in Iowa Paleontology in Iowa References Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021. This article about a specific stratigraphic formation in Iowa is a stub. You can help Wikipedia by expanding it.vte This article related to the Devonian period is a stub. You can help Wikipedia by expanding it.vte Related Articles
