Nachusa Formation
From Infogalactic: the planetary knowledge core
| Nachusa Formation Stratigraphic range: Ordovician |
|
|---|---|
| Type | Formation |
| Location | |
| Region |  Illinois |
| Country |  United States |
The Nachusa Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
See also
References
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