Stratigraphic range: Albian
|Unit of||Dakota Group|
The Plainview Formation is a Early Cretaceous (Albian) geologic formation of the Dakota Group in Colorado. Fossil ankylosaur tracks and tracks of Caririchnium sp. have been reported from the formation.
The formation overlies the Lytle Formation and is overlain by the Glencairn Formation and comprises resistant, brown-weathered sandstones, and dark shales and siilstones, also described as bioturbated brownish sandstones with black and grey silty or shaley sandstone intervals. The formation was deposited in a variety of near-shore and/or marginal marine environments. The tracks occur in the upper part of an estuarine point bar sequence, overlain by brackish bay or lagoon deposits.
- List of dinosaur-bearing rock formations
- Weishampel, David B.; Peter Dodson, and Halszka (eds.) Osmólska. 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
- Kurtz, W.J.; M.G. Lockley, and D.J. Engard. 2001. Dinosaur tracks in the Plainview Formation, Dakota Group (Cretaceous, Albian) near Cañon City, Colorado: a preliminary report on another "Dinosaur Ridge". The Mountain Geologist 38. 155–164.
- Lockley, M.G. 1987. Dinosaur footprints from the Dakota Group of eastern Colorado. The Mountain Geologist 24. 107–122.