Ion Formation
Ion Formation Stratigraphic range: Ordovician | |
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The Ion Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
See also[]
References[]
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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Categories:
- Ordovician Iowa
- Ordovician Illinois
- Ordovician Minnesota
- Ordovician geology of Wisconsin
- Ordovician southern paleotropical deposits
- Illinois geologic formation stubs