This is a list of fossil-bearing stratigraphic units in the U.S. state of Colorado.
Sites Group or formation Period Notes Alamosa Formation Pleistocene Animas Formation Paleogene, Cretaceous Arapahoe Formation Cretaceous Battle Mountain Formation Carboniferous Belden Shale Carboniferous Browns Park Formation Neogene Brule Formation Paleogene Carline Shale Cretaceous Chadron Formation Paleogene Chinle Formation Triassic Chinle Group/Sheep Pen Sandstone Triassic Chinle Group/Sloan Canyon Formation Triassic Coalmont Formation Paleogene Colorado Group/Carlile Shale Cretaceous Colorado Group/Graneros Shale Cretaceous Colorado Group/Greenhorn Limestone Cretaceous Colorado Group/Niobrara Formation Cretaceous Creede Formation Paleogene Cuchara Formation Paleogene Cutler Formation Permian D Sandstone Cretaceous D1 Formation Paleogene Dakota Formation Cretaceous Dakota Group/Mesa Rica Sandstone Cretaceous Dakota Group/Muddy Sandstone Cretaceous Dakota Group/Pajarito Formation Cretaceous Dakota Group/Plainview Formation Cretaceous Dakota Group/South Platte Formation Cretaceous Dawson Formation Paleogene DeBeque Formation Paleogene Denver Formation Paleogene, Cretaceous Dotsero Formation Cambrian Dyer Formation Devonian Farisita Formation Paleogene Florissant Formation Paleogene Fort Union Formation Paleogene Fountain Formation Carboniferous Fox Hills Formation Cretaceous Fox Hills Sandstone Cretaceous Fremont Formation Ordovician Glen Canyon Group/Navajo Sandstone Jurassic Glen Canyon Group/Wingate Sandstone Triassic Green River Formation Paleogene Greenhorn Formation Cretaceous Greenhorn Limestone Cretaceous Harding Formation Ordovician Harding Sandstone Ordovician Huerfano Formation Paleogene Iles Formation Cretaceous Laramie Formation Paleogene, Cretaceous Leadville Limestone Carboniferous Lewis Shale Cretaceous Mancos Shale Cretaceous Manitou Limestone Ordovician Maroon Formation Permian, Carboniferous Martin Canyon Beds Formation Neogene McCoy Formation Carboniferous Mesaverde Formation Paleogene, Cretaceous Middle Park Formation Paleogene Minturn Formation Carboniferous Montana Group/Pierre Shale Cretaceous Morrison Formation Jurassic Niobrara Formation Cretaceous North Park Formation Neogene Ohio Creek Formation Paleogene Ouray Formation Devonian Paradox Formation Carboniferous Pawnee Creek Formation Neogene Pierre Shale Cretaceous Poison Canyon Formation Paleogene Priest Canyon Formation Ordovician Purgatoire Formation Cretaceous Raton Formation Paleogene Sangre de Cristo Formation Carboniferous Sawatch Formation Cambrian Shoshone? Formation Paleogene Split Rock Formation Neogene Summerville Formation Jurassic Troublesome Formation Neogene Vermejo Formation Paleogene Wasatch Formation Paleogene Washakie Formation Paleogene Weber Formation Carboniferous White River Formation Paleogene White River Group/Brule Formation Paleogene Williams Fork Formation Cretaceous
See also
Paleontology in Colorado Bibliography of Colorado Geography of Colorado History of Colorado Index of Colorado-related articles List of Colorado-related lists Outline of Colorado
References
External links
United States Geological Survey Colorado Geological Survey Colorado School of Mines University of Colorado