Three Forks Shale
From Wikipedia, the free encyclopedia
The Three Forks Shale is a geologic formation in Montana and North Dakota. It preserves fossils dating back to the Devonian period.[1]
Quick Facts Type, Location ...
Three Forks Shale | |
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Stratigraphic range: Devonian | |
Type | Formation |
Location | |
Region | Montana |
Country | United States |
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