Poison Canyon Formation
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- Geologic Map of Vermejo Park Quadrangle, Colfax
- Gravity, Magnetic, and Geologic Constraints on the Raton Basin of Southern Colorado, USA Yusuf Pehlivan
- Upper Cretaceous and Paleocene Floras of the Raton Basin, Colorado and New Mexico Sidney R
- Pueblo Indian Reservations
- Description of the Walsenburg Quadrangle
- Depositional Environments of Cretaceous-Paleogene Coal Beds
- Paleontological Resource Overview of the Royal Gorge Field Office Planning Area
- Late Cretaceous and Tertiary Stratigraphy of the Raon Basin of New Mexico and Colorado Ross B
- Depositional Environments and Provenance of Early Paleogene Strata in the Huerfano Basin: Implications for Uplift of the Wet Mountains, Colorado, USA
- The Cenozoic Rocks; a Discussion to Accompany the Geologic Map of the United States
- Proposed Legend and Correlation of Map Units for Revised State Geologic
- Geology of the Huerfano Park Area Huerfano and Custer Counties Colorado