Shell Rock Formation Explained

Shell Rock Formation
Type:	Formation
Age:	Devonian
Region:	Iowa
Country:	United States
Subunits:	Mason City Member

The Shell Rock Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.

See also

• List of fossiliferous stratigraphic units in Iowa
• Paleontology in Iowa

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021. dmy-all.