| Au Train Formation | |
|---|---|
| Stratigraphic range: Early Ordovician | |
 Au Train Formation at
Munising Falls (
Pictured Rocks National Lakeshore) | |
| Type | Formation |
| Underlies | Black River Formation |
| Overlies | Munising Formation |
| Location | |
| Region | 
Michigan |
| Country | 
United States |
The Au Train Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period.
See also
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- Pictured Rocks: Geologic Formations|url= http://www.nps.gov/piro/naturescience/geologicformations.htm%7Cpublisher=US National Park Service|accessdate=June 14, 2020
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