Category:Deepkill Shale
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This category has only the following subcategory.
Categories:
- Geologic formations in New York (state)
- Ordovician formations in New York (state)
- Shale formations in New York (state)
- Ordovician sedimentary rocks in New York (state)
- Ordovician shale in the United States
- Fossil bearing geologic formations in New York (state)
- Ordovician fossil bearing formations in the United States