Bill's Creek Shale | |
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Stratigraphic range: Middle Ordovician - Late Ordovician | |
Type | Formation |
Underlies | Stonington Formation |
Overlies | Collingwood Shale |
Location | |
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The Bill's Creek Shale is a geologic formationinMichigan. It preserves fossils dating back to the Ordovician period.
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