| 词条 | Four Mile Dam Formation |
| 释义 |
| name = Four Mile Dam Formation | image = | caption = | type = Formation | age = Devonian | period = Devonian | prilithology = | otherlithology = | namedfor = | namedby = | region = {{Flag|Michigan}} | country = {{Flag|United States}} | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Four Mile Dam Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period. {{Portal|Earth sciences|Michigan|Paleontology|Devonian|Paleozoic}}References
2 : Devonian Michigan|Devonian southern paleotemperate deposits |
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