DeBeque Formation

The DeBeque Formation is a geologic formation in Colorado's Piceance Basin,[1] preserving fossils which date back to the Late Paleocene to Early Eocene period (Clarkforkian to Wasatchian in the NALMA classification.[2][3] Examples of these fossils are held in the University of Colorado Museum of Natural History.[4]

DeBeque Formation
Stratigraphic range: Late Paleocene-Early Eocene (Clarkforkian-Wasatchian)
~
Fossil from the DeBeque Formation
TypeFormation
Sub-unitsAtwell Gulch Member
Lithology
PrimaryClaystone
Location
Coordinates40.0°N 107.9°W / 40.0; -107.9
Approximate paleocoordinates44.8°N 91.8°W / 44.8; -91.8
Region Colorado
Country United States
DeBeque Formation (the United States)
DeBeque Formation (Colorado)

Wasatchian correlations
Wasatchian correlations in North America
FormationWasatchDeBequeClaronIndian MeadowsPass PeakTatmanWillwoodGolden ValleyColdwaterAllenbyKamloopsOotsa LakeMargaretNanjemoyHatchetigbeeTetas de CabraHannold HillCoalmontCucharaGalisteoSan JoseYpresian (IUCS) • Itaboraian (SALMA)
Bumbanian (ALMA) • Mangaorapan (NZ)
BasinPowder River
Uinta
Piceance
Colorado Plateau
Wind River
Green River
Bighorn		Piceance




Colorado Plateau





Wind River





Green River






Bighorn		WillistonOkanaganPrincetonBuck CreekNechakoSverdrupPotomacGoMLaguna SaladaRio GrandeNorth ParkRatonGalisteoSan Juan
DeBeque Formation (North America)
Country United States Canada United States Mexico United States
Copelemur
Coryphodon
Diacodexis
Homogalax
Oxyaena
Paramys
Primates
Birds
Reptiles
Fish
Insects
Flora
EnvironmentsAlluvial-fluvio-lacustrineFluvialFluvialFluvio-lacustrineFluvialLacustrineFluvio-lacustrineDeltaic-paludalShallow marineFluvialShallow marineFluvialFluvial
Wasatchian volcanoclastics

Wasatchian fauna

Wasatchian flora
VolcanicYesNoYesNoYesNoYesNoYesNo

See also

References
  1. Bown & Kihm, 1981
  2. DeBeque Formation at Fossilworks.org
  3. Hirsch et al., 1997
  4. "Collections". Museum of Natural History. 24 May 2016. Retrieved 10 November 2019.

Bibliography
  • Hirsch, Karl F.; Allen J. Kihm, and Darla K. Zelenitsky. 1997. New Eggshell of Ratite Morphotype with Predation Marks from the Eocene of Colorado. Journal of Vertebrate Paleontology 17. 360. ISSN 0272-4634 JSTOR 4523812 doi:10.1080/02724634.1997.10010980
  • Bown, Thomas M., and Allen J. Kihm. 1981. Xenicohippus, an Unusual New Hyracotheriine (Mammalia, Perissodactyla) from Lower Eocene Rocks of Wyoming, Colorado and New Mexico. Journal of Paleontology 55. 257. ISSN 0022-3360 JSTOR 1304347

Further reading
  • A. J. Lichtig and S. G. Lucas. 2015. Paleocene-Eocene turtles of the Piceance Creek Basin, Colorado. New Mexico Museum of Natural History and Science Bulletin 67:145-152
  • A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado
  • K. P. Schmidt. 1938. New crocodilians from the upper Paleocene of western Colorado. Geological Series of Field Museum of Natural History 6(21):315-321


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