Williams Fork Formation

The Williams Fork Formation is a Campanian (Edmontonian) geologic formation of the Mesaverde Group in Colorado. Dinosaur remains are among the fossils, most notably Pentaceratops sternbergii,[1] that have been recovered from the formation, although none have yet been referred to a specific genus.[2] Other fossils found in the formation are ammonites, Neosuchia, and the mammal Meniscoessus collomensis.[3][4]

Williams Fork Formation
Stratigraphic range: Campanian (Edmontonian)
~84–71 Ma
TypeGeological formation
Unit ofMesaverde Group
Lithology
PrimaryMudstone
OtherSandstone
Location
Coordinates40.0°N 108.8°W / 40.0; -108.8
Approximate paleocoordinates47.5°N 80.3°W / 47.5; -80.3
RegionColorado
Country United States
Williams Fork Formation (the United States)
Williams Fork Formation (Colorado)

See also

References

  1. Diem, Steve; Archibald, James D. (2005). "Range extension of southern chasmosaurine Ceratopsian dinosaurs into northwestern Colorado". Journal of Paleontology. 79 (2): 251–258. CiteSeerX 10.1.1.538.7263. doi:10.1666/0022-3360(2005)079<0251:REOSCC>2.0.CO;2. Retrieved 21 September 2016.
  2. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. Jubb Creek at Fossilworks.org
  4. Rangely South (SDNHM) at Fossilworks.org

Bibliography

Further reading

  • J. R. Foster and R. K. Hunt-Foster. 2015. First report of a giant neosuchian (Crocodyliformes) in the Williams Fork Formation (Upper Cretaceous: Campanian) of Colorado. Cretaceous Research 55:66-73
  • W. J. Kennedy, W. A. Cobban, and G. R. Scott. 2000. Heteromorph ammonites from the Upper Campanian (Upper Cretaceous) Baculites cuneatus and Baculites reesidei zones of the Pierre Shale in Colorado, USA. Acta Geologica Polonica 50:1-20
  • J. A. Lillegraven. 1987. Stratigraphic and evolutionary implications of a new species of Meniscoessus (Multituberculata, Mammalia) from the Upper Cretaceous Williams Fork Formation, Moffat County, Colorado. Dakoterra 3:46-56
  • Sullivan, R.M., and Lucas, S.G. 2006. "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America." New Mexico Museum of Natural History and Science, Bulletin 35:7-29.
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