The Mattoon Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
See also
References
- "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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Reede, veebruar 28, 2025
The Mattoon Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
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