12 km south of Dariv: Late Jurassic, Mongolia
collected 1995
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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| 1 individual | |||||||
| see common names | |||||||
Geography
| Country: | Mongolia | State/province: | Govi-Altay |
| Coordinates: | 46.3° North, 94.1° East (view map) | ||
| Paleocoordinates: | 51.6° North, 94.0° East (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 1657 meters | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| 10 m.y. bin: | Jurassic 5-6 | ||
| Key time interval: | Late Jurassic | ||
| Age range of interval: | 161.5 - 143.1 m.y. ago |
Stratigraphy
| Formation: | Dariv | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: dinosaur remains found at 11 stratigraphic levels | |||||
Lithology and environment
| Primary lithology: | fine,red mudstone | ||
| Secondary lithology: | lenticular sandstone | ||
| Includes fossils? | Y | ||
| Lithology description: "poorly sorted red and maroon mudstones predominate, and sandstones generally are limited to lenticular beds less than 1 m thick." Mudstones are fine-grained. | |||
| Environment: | wet floodplain | Tectonic setting: | foreland basin |
| Geology comments: floodplain deposits in a seasonally wet, collisional foreland basin | |||
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Associated major elements: | all |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | general faunal/floral analysis | Collection dates: | 1995 |
| Collection method comments: Collected by Academy of Sciences of Mongolia, Stanford University, and University of Montana | |
Metadata
| Database number: | 48822 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-03-30 13:43:06 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-03-30 13:43:06 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 13009. | ETE | S. A. Graham, M. S. Hendrix, R. Barsbold, D. Badamgarav, D. Sjostrom, W. Kirschner, and J. S. McIntosh. 1997. Stratigraphic occurrence, paleoenvironment, and description of the oldest known dinosaur (Late Jurassic) from Mongolia. Palaios 12:292-297 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 55298 | M. Watabe, K. Tsogtbaatar, S. Suzuki and M. Saneyoshi. 2010. Geology of dinosaur-fossil-bearing localities (Jurassic and Cretaceous: Mesozoic) in the Gobi Desert: Results of the HMNS-MPC Joint Paleontological Expedition. Hayashibara Museum of Natural Sciences Research Bulletin 3:41-118 [M. Carrano/M. Carrano] |