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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) |