Hsanda Gol, section SHG-A/6: Early/Lower Oligocene, Mongolia
collected by joint Austrian-Mongolian project 1995-1997, 2001, 2004, 2006
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Mammalia
- Rodentia
- Ctenodactylidae
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Karakoromys decessus
Matthew and Granger 1923
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| NHMW 2006z | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mongolia | State/province: | Övörkhangai | County: | Baruunbayan-Ulan |
| Coordinates: | 45.3° North, 101.8° East (view map) | ||||
| Paleocoordinates: | 46.7° North, 99.3° East | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early/Lower Oligocene | Mammal zone: | B |
| Age range of interval: | 33.90000 - 27.82000 m.y. ago | ||
| Age estimate: | 31.5 ± 1 to 28 ± 1 Ma (Ar/Ar) |
Stratigraphy
| Formation: | Hsanda Gol | ||||
| Local section: | SHG-A | Local bed: | 6 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Biozone B | |||||
Lithology and environment
| Primary lithology: | red silty mudstone | ||
| Includes fossils? | Y | ||
| Lithology description: The Hsanda Gol Fm. mainly consists of "brick red" poorly sorted mudstones (Höck et al., 1999). | |||
| Environment: | terrestrial indet. | Tectonic setting: | rift |
| Geology comments: The fines of the Hsanda Gol Fm. are interpreted as eolian dust and playa sediments, deposited on an arid plain (Höck et al., 1999). | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Preservation of anatomical detail: | good |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | sieve | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | NHMW | ||
| Collectors: | joint Austrian-Mongolian project | Collection dates: | 1995-1997, 2001, 2004, 2006 |
Metadata
| Also known as: | Valley of Lakes | ||
| Database number: | 180982 | ||
| Authorizer: | P. Mannion | Enterer: | P. Mannion | Research group: | vertebrate |
| Created: | 2016-08-11 09:03:28 | Last modified: | 2016-08-11 09:03:28 |
| Access level: | the public | Released: | 2016-08-11 09:03:28 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 60091. | N. Schmidt-Kittler, N. Vianey-Liaud, and L. Marivaux. 2007. 6. The Ctenodactylidae (Rodentia, Mamalia). Annalen des Naturhistorischen Museums in Wien, Serie A 108A:173-215 [P. Mannion/P. Mannion] |