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Archean - unnamed strata (1) |
Carboniferous - Millsap formation (1) |
Cretaceous - Pierre shale; Niobrara formation; Carlile shale; Greenhorn limestone; Graneros shale; Dakota sandstone (1) |
Geology -- United States --Maps (1) |
Geology--Colorado--Pueblo County--Maps (1) |
Jurassic - Morrison formation; Fountain formation (1) |
Neogene - Nussbaum formation (1) |
Silurian - Harding sandstone (1) |
Triassic - Morrison formation; Fountain formation (1) |