Cummingsville Formation

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Cummingsville Formation
Formation
Overlies	Decorah Shale
Location
Country	United States
Extent	Iowa and Minnesota

The Cummingsville Formation is a

period

.

See also

References

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

Chronostratigraphy of Minnesota

Q	Glacial and post-glacial unconsolidated deposits

Upper

unnamed Upper? Cretaceous formations, western and southeastern Minnesota

Upper

Frasnian	Lithograph City Formation (in part)

Givetian	Coralville Formation Lithograph City Formation (in part) Little Cedar Formation Pinicon Ridge Formation
Eifelian	Spillville Formation

Upper

Winnipeg Formation (subsurface only)

Middle

Darriwilian	St. Peter Sandstone (in part)

Lower

Tremadocian	Oneota Dolomite (Prairie du Chien Group ) Shakopee Formation (Prairie du Chien Group )

Furongian	Davis Formation Jordan Sandstone Franconia Formation ) Franconia Formation ) St. Lawrence Formation Wonewoc Sandstone (Galesville Sandstone in part, all Ironton Sandstone)
Series 3	Bonneterre Formation Eau Claire Formation Mt. Simon Sandstone Wonewoc Sandstone (Galesville Sandstone in part)

Y	Fond du Lac Formation Hinckley Sandstone North Shore Volcanic Group Puckwunge Conglomerate Solor Church Formation (subsurface only)
X	Biwabik Formation Gunflint Formation Kakabeka Formation Mahnoman Formation Pokegama Formation Rabbit Lake Formation Rove Formation Sioux Quartzite Thomson Formation Trommald Formation Virginia Formation

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