Category:Amsterdam Formation (U.S. geology)
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Media in category "Amsterdam Formation (U.S. geology)"
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Categories:
- Geologic formations in New York (state)
- Ordovician formations in New York (state)
- Limestone formations in New York (state)
- Ordovician sedimentary rocks in New York (state)
- Ordovician limestone in the United States
- Fossil bearing geologic formations in New York (state)
- Ordovician fossil bearing formations in the United States