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
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Testudo nanus n. sp.
Gilmore 1931
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AMNH 6692 a complete shell | ||||||||||
Reptilia
- Testudines
- Emydidae
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Sharemys hemispherica n. sp.
Gilmore 1931
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AMNH 6694 a nearly complete carapace and plastron | ||||||||||
Reptilia
- Arretosauridae
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Arretosaurus ornatus n. gen., n. sp.
Gilmore 1943
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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
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Anagale gobiensis n. gen., n. sp.
Simpson 1931
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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:
34192 | ETE | C. W. Gilmore. 1931. Fossil turtles of Mongolia. Bulletin of the American Museum of Natural History 59:213-257 [M. Carrano/M. Carrano] |
12062 | ETE | 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] |