Viola Formation | |
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Stratigraphic range: Ordovician | |
![]() Fossils from the Viola Formation | |
Type | Formation |
Location | |
Region | Oklahoma |
Country | United States |
Type section | |
Named for | Viola, Johnston County, Oklahoma |
Named by | Joseph A. Taff, 1902 [1] |
The Viola Formation is a geologic formation in Oklahoma. It preserves fossils dating back to the Ordovician period.