7 Miles West of Camp Margetts (1930 AMNH Gobiatherium type locality): Arshantan, China
collected by Central Asiatic Expedition 1930

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Dinocerata - Uintatheriidae
Gobiatherium mirificum n. gen., n. sp. Osborn and Granger 1932
AMNH 26624 - holotype; referred specimens: AMNH 26615-26637
Mammalia - Rodentia - Paramyidae
Paramyidae indet. Miller and Gidley 1918
Dawson 1964
AMNH 80800
Mammalia - Perissodactyla - Paraceratheriidae
Pappaceras confluens n. gen., n. sp. Wood 1963
Wood 1963
AMNH 26660 - holotype
Urtinotherium intermedium (Chiu 1962)
Qiu and Wang 2007
AMNH 26390 [field number 914]
Reptilia
Asiatosuchus grangeri n. gen., n. sp. Mook 1940
Mook 1940
see common names

Geography
Country:China State/province:Nei Mongol
Coordinates: 43.7° North, 112.0° East (view map)
Paleocoordinates:42.7° North, 107.8° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Time
Period: Paleogene Epoch: Eocene
10 m.y. bin: Cenozoic 2-3
Key time interval: Arshantan
Age range of interval: 56 - 37.71 m.y. ago
Stratigraphy
Formation:Arshanto
Stratigraphic resolution:group of beds
Stratigraphy comments: "Upper Eocene" from the "Irdin Manha beds" and presumably Irdinmanhan, but Radinsky 1964 shows that correlation to the type section of the Irdin Manha Formation is unfounded

Meng et al. 2007: The upper beds, called ‘‘Houldjin’’ by Granger, are most likely equivalent to bed 12 of Meng et al. (2004), which they considered typical of the Irdin Manha Formation. These strata are now known to form the lower part of the middle beds according to our terminology. The ‘‘Eudinoceras’’ in Granger’s sketch were de- scribed as Gobiatherium mirificum (Osborn and Granger, 1932). This species is the dominant taxon in terms of abundance at this site (appendix 3), and it is regarded as one of the index taxa for the Arshantan (Lucas, 2001). We think that the bed that contains Gobiatherium mirificum (‘‘Eudinoceras’’) in Granger’s section is roughly correlative with the beds that yielded Litolophus, Gobiatherium, and Metacoryphodon within the middle beds of the NHA sequence.
Lithology and environment
Primary lithology:gray,red claystone
Lithology description: "red and gray clays" (Radinsky 1964) A detailed description of the Ashanti beds can be found in Appendix 2 of Meng et al. 2007
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collectors:Central Asiatic Expedition Collection dates:1930
Metadata
Database number:72184
Authorizer:J. Alroy, P. Mannion Enterer:J. Alroy, P. Mannion
Modifier:G. Varnham Research group:vertebrate
Created:2007-05-26 21:31:52 Last modified:2025-02-22 15:12:02
Access level:the public Released:2007-05-26 21:31:52
Creative Commons license:CC0
Reference information

Primary reference:
24437. H. F. Osborn and W. Granger. 1932. Coryphodonts and uintatheres from the Mongolian expedition of 1930. American Museum Novitates 552:1-16 [J. Alroy/J. Alroy]

Secondary references:

60551 M. R. Dawson. 1964. Late Eocene rodents (Mammalia) from Inner Mongolia. American Museum Novitates 2191:1-15 [P. Mannion/P. Mannion]
79213 J. Meng, Y. Wang, X. Ni, K. C. Beard, C. Sun, Q. Li, X. Jin and B. Bai. 2007. New Stratigraphic Data from the Erlian Basin: Implications for the Division, Correlation, and Definition of Palaeocene Lithological units in Nei Mongol (Inner Mongolia). American Museum Noviates 3570:1-31 [P. Mannion/G. Varnham/P. Wagner]
23749ETE C. C. Mook. 1940. A new fossil crocodilian from Mongolia. American Museum Novitates 1097:1-3 [M. Carrano/M. Carrano/J. Alroy]
61005 Z. Qiu and B. Wang. 2007. Paracerathere Fossils of China. Palaeontologia Sinica, New Series C 193(29):1-396 [P. Mannion/P. Mannion]
61259 H. E. Wood. 1963. A primitive rhinoceros from the Late Eocene of Mongolia. American Museum Novitates 2146:1-11 [P. Mannion/P. Mannion]