Winneshiek Shale
id:
winneshiek-shale-204-1308984
title:
Winneshiek Shale
text:
The Winneshiek Shale is a Middle Ordovician (Darriwilian-age) geological formation in Iowa. The formation is restricted to the Decorah crater, an impact crater near Decorah, Iowa. Despite only being discovered in 2005, the Winneshiek Shale is already renowned for the exceptional preservation of its fossils. The shale preserves a unique ecosystem, the Winneshiek biota, which is among the most remarkable Ordovician lagerstätten in the United States. Fossils include the oldest known eurypterid, Pen
brand slug:
wiki
category slug:
encyclopedia
description:
Iowa geological formation
original url:
https://en.wikipedia.org/wiki/Winneshiek_Shale
date created:
2020-12-19T20:40:09Z
date modified:
2024-09-09T20:05:58Z
main entity:
{"identifier":"Q104836057","url":"https://www.wikidata.org/entity/Q104836057"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/8/8f/Winneshiek_Shale_dam_%26_outcrops.png","width":1975,"height":1581}
fields total:
13
integrity:
16