Three Forks Shale
The Three Forks Shale is a geologic formation in Montana and North Dakota. It preserves fossils dating back to the Devonian period.[1] See alsoReferences
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Three Forks Shale
The Three Forks Shale is a geologic formation in Montana and North Dakota. It preserves fossils dating back to the Devonian period.[1] See alsoReferences
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