Winslow Formation | |
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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.