Category:Hartshorne Formation
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This category has only the following subcategory.
Categories:
- Geologic formations in Arkansas
- Carboniferous formations in Arkansas
- Fossil bearing geologic formations in Arkansas
- Geologic formations in Oklahoma
- Carboniferous formations in Oklahoma
- Fossil bearing geologic formations in Oklahoma
- Carboniferous southern paleotropical deposits in the United States
- Carboniferous sedimentary rocks in Alabama
- Carboniferous sedimentary rocks in Oklahoma
- Carboniferous shale in the United States
- Shale formations in Arkansas
- Shale formations in Oklahoma
- Carboniferous fossil bearing formations in the United States