Now showing items 1-10 of 2

    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)