Ringbone Formation

The Ringbone Formation is a Campanian geologic formation in New Mexico. The formation comprises mudstones and yellow sandstones deposited in a lacustrine to deltaic environment.[1] Dinosaur remains of tyrannosaurs and hadrosaurs are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2]

Ringbone Formation Stratigraphic range: Campanian ~84–71 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Lithology
Primary	Mudstone
Other	Sandstone
Location
Coordinates	31.9°N 108.5°W / 31.9; -108.5
Approximate paleocoordinates	39.3°N 80.7°W / 39.3; -80.7
Region	New Mexico
Country	United States
Ringbone Formation (the United States) Show map of the United States Ringbone Formation (New Mexico) Show map of New Mexico

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils

References

1. Little Hatchet Mountains at Fossilworks.org
2. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.

Bibliography

• 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

Further reading

• S. G. Lucas, G. Basabilvazo, and T. F. Lawson. 1990. Late Cretaceous dinosaur from the Ringbone Formation, southwestern New Mexico, USA. Cretaceous Research 11:343-349