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Cambrian - Deadwood formation (2) |
Carboniferous - Chugwater formation; Tensleep sandstone; Amsden formation; Madison limestone (2) |
Cretaceous - Pierre shale; Colorado formation; Cloverly formation; Morrison formation; De Smet formation; Kingsbury conglomerate; Piney formation; Parkman sandstone (2) |
Geology -- United States --Maps (2) |
Geology -- Wyoming -- Big Horn County -- Maps (2) |
Geology -- Wyoming -- Johnson County -- Maps (2) |
Jurassic - Morrison formation; Sundance formation (2) |
Neogene - unnamed strata (2) |
Ordovician - Bighorn limestone (2) |
Paleogene - unnamed strata (2) |