Article · Wikipedia archive · Last revised Jul 19, 2026

Neda Formation

The Neda Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.

Last revised
Jul 19, 2026
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≈ 1 min
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Neda Formation
Stratigraphic range: Ordovician
Neda Formation (Ordovician) below Kankakee Formation (Silurian) in Illinois
TypeFormation
Unit ofMaquoketa Group
Location
RegionIllinois and Wisconsin
CountryUnited States

The Neda Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.

See also

See also

References

References