Wikipedia Easy Search

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages)

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (May 2017) (Learn how and when to remove this message)

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.
Find sources: "Long Lake Limestone" – news · newspapers · books · scholar · JSTOR (May 2017)

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.
Find sources: "Long Lake Limestone" – news · newspapers · books · scholar · JSTOR (May 2017) (Learn how and when to remove this message)

This section uses citations that link to broken or outdated sources. Please improve the article by addressing link rot or discuss this issue on the talk page. (March 2024) (Learn how and when to remove this message)

(Learn how and when to remove this message)

Long Lake Limestone
Stratigraphic range: Middle Devonian
Type	Formation
Unit of	Traverse Group
Sub-units	Killians Member and Genshaw Member
Underlies	Alpena Limestone
Overlies	Ferron Point Formation
Location
Region	Michigan
Country	United States

The Long Lake Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.