Irdin Manha Formation

The Irdin Manha Formation is a geological formation from the Eocene located in Inner Mongolia, China, a few kilometres south of the Mongolian border [1]

Irdin Manha Formation Stratigraphic range: Eocene PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Location
Location	Inner Mongolia
Coordinates	43.7°N 112.0°E / 43.7; 112.0
Country	China
Approximate paleocoordinates	45.2°N 105.7°E / 45.2; 105.7

U.S. paleontologists Henry Fairfield Osborn and Roy C. Andrews discovered two premolars on the site in 1923, and Osborn 1924 assigned the specimen to the new genus Eudinoceras because he believed it to be related to "Dinoceras" (now known as Uintatherium). Within a decade, however, as more complete specimens were recovered, the animal was identified as a Mongolian relative to the North American pantodont Coryphodon.[2]

See also

• List of fossil sites

References

1. Irdin Manha Beds (1930 AMNH Eudinoceras site) (Eocene of China) in the Paleobiology Database. Retrieved July 2013.
2. Osborn & Granger 1932

Bibliography

• Osborn, H. F. (1924). "Eudinoceras, Upper Eocene amblypod of Mongolia". American Museum Novitates. 145. hdl:2246/3225.CS1 maint: ref=harv (link)
• Osborn, H. F.; Granger, Walter (1932). "Coryphodonts and Uintatheres from the Mongolian Expedition of 1930" (PDF). American Museum Novitates. 552. Retrieved 22 July 2013.CS1 maint: ref=harv (link)
• Vickers-Rich, Patricia; Rich, Thomas Hewett (1993). Wildlife of Gondwana. Reed. ISBN 0-7301-0315-3.