Twin Obo (Ulan Gochu horizon): Early/Lower Oligocene, China
collected by Central Asiatic Expedition 1928

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Testudinidae
Testudo nanus n. sp. Gilmore 1931
AMNH 6692 a complete shell
Reptilia - Testudines - Emydidae
Sharemys hemispherica n. sp. Gilmore 1931
AMNH 6694 a nearly complete carapace and plastron
Reptilia - Arretosauridae
Arretosaurus ornatus n. gen., n. sp. Gilmore 1943
Gilmore 1943 2 specimens
AMNH 6706 (holotype), incomplete skull and lower jaws articulated with the anterior portion of the skeleton, including some of the pectoral girdle and one forelimb and foot, and a small patch of skin impression; AMNH 6708, disarticulated skull elements
Mammalia - Anagalida - Anagalidae
Anagale gobiensis n. gen., n. sp. Simpson 1931
Simpson 1931
AMNH 26079 - holotype
see common names

Geography
Country:China State/province:Nei Mongol County:Shara Murun
Coordinates: 43.2° North, 111.3° East (view map)
Paleocoordinates:44.4° North, 107.8° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
Key time interval:Early/Lower Oligocene
Age range of interval:33.90000 - 28.40000 m.y. ago
Stratigraphy
Formation:Ulan Gochu
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Museum repositories:AMNH
Collectors:Central Asiatic Expedition Collection dates:1928
Metadata
Also known as:East Mesa; Shara Murun; Twin Oboes; Twin Obes
Database number:178876
Authorizer:D. Nicholson, P. Mannion, P. Barrett Enterer:D. Nicholson, P. Mannion, T. Cleary
Modifier:T. Cleary Research group:vertebrate
Created:2016-05-19 10:32:03 Last modified:2018-06-20 05:29:24
Access level:the public Released:2016-05-19 10:32:03
Creative Commons license:CC BY
Reference information

Primary reference:

58770. D. B. Brinkman, J.-L. Li, and X.-K. Ye. 2008. Order Testudines. In J. Li, X. Wu, F. Zhange (eds.), The Chinese Fossil Reptiles and Their Kin 35-102 [D. Nicholson/D. Nicholson/D. Nicholson]

Secondary references:

34192ETE C. W. Gilmore. 1931. Fossil turtles of Mongolia. Bulletin of the American Museum of Natural History 59:213-257 [M. Carrano/M. Carrano]
12062ETE C. W. Gilmore. 1943. Fossil lizards of Mongolia. Bulletin of the American Museum of Natural History 81(4):361-384 [M. Carrano/M. Carrano/R. Benson]
60690 G. G. Simpson. 1931. A new insectivore from the Oligocene, Ulan Gochu horizon, of Mongolia. American Museum Novitates 505:1-22 [P. Mannion/P. Mannion]