| 词条 | Big Hill Formation |
| 释义 |
| name = Big Hill Formation | image = | caption = | type = Formation | age = Late Ordovician | period = Late Ordovician | prilithology = | otherlithology = | namedfor = | namedby = | region = {{Flag|Michigan}} | country = {{Flag|United States}} | coordinates = | unitof = Richmond Group | subunits = | underlies = Manitoulin Dolomite | overlies = Stonington Formation | thickness = | extent = | area = | map = | map_caption = }} The Big Hill Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period. See also{{Portal|Earth sciences|Michigan|Paleontology|Ordovician|Paleozoic}}
References
3 : Ordovician System of North America|Ordovician Michigan|Upper Ordovician Series |
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