Category:Elkhorn Formation
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Media in category "Elkhorn Formation"
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Megalograptus ohioensis, Elkhorn Formation.jpg 3,848 × 1,853; 5.09 MB
Categories:
- Ordovician formations in Ohio
- Geologic formations in Ohio
- Fossil bearing geologic formations in Ohio
- Ordovician formations in Indiana
- Geologic formations in Indiana
- Fossil bearing geologic formations in Indiana
- Ordovician formations in Kentucky
- Geologic formations in Kentucky
- Fossil bearing geologic formations in Kentucky
- Late Ordovician
- Ordovician southern paleotemperate deposits in the United States