Type Formation | ||
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The Cummingsville Formation is a geologic formation in Iowa and Minnesota. It preserves fossils dating back to the Ordovician period.
References
Cummingsville Formation Wikipedia(Text) CC BY-SA
Type Formation | ||
![]() | ||
The Cummingsville Formation is a geologic formation in Iowa and Minnesota. It preserves fossils dating back to the Ordovician period.