Winslow Formation
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| Winslow Formation | |
|---|---|
| Stratigraphic range: Carboniferous: Pennsylvanian | |
| Type | Formation |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | Winslow, Washington County, Arkansas |
| Named by | George Irving Adams and Edward Oscar Ulrich[1] |
The Winslow Formation was a geologic formation in Arkansas, now abandoned and replaced by the Atoka Formation, the Hartshorne Formation, and the lower McAlester Formation (previously Spadra Shale[2]).[3][4] It preserves fossils dating back to the Carboniferous period.
