Ionia Formation

Ionia Formation
Ionia Formation
Stratigraphic range: Jurassic
Type	Formation
Underlies	Glacial drift
Overlies	Grand River Formation
Location
Region	Michigan
Country	United States

Last updated May 24, 2025

The Ionia Formation is a geologic formation in Michigan. It preserves fossils dating back to the Jurassic period.

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.^{[ shallow reference ]}

This article about a specific stratigraphic formation in Michigan is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.