Rio Dell Formation
| Rio Dell Formation | |
|---|---|
| Stratigraphic range: Neogene | |
|  Rio Dell Formation at Scotia Bluffs | |
| Type | Formation | 
| Location | |
| Region | California | 
| Country | United States | 

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The Rio Dell Formation is a geologic formation in California. It preserves fossils dating back to the Neogene period.
See also
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.