Tanggula Mountains, H 45, Matuo Formation: Bajocian - Early/Lower Bathonian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Ostreida
- Malleidae
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Isognomon (Mytiloperna) murchisonii
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20 specimens | ||||||
| original and current combination Mytiloperna | |||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Qinghai |
| Coordinates: | 33.3° North, 92.0° East (view map) | ||
| Paleocoordinates: | 25.6° North, 89.4° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| 10 m.y. bin: | Jurassic 4 | ||
| Key time interval: | Bajocian - Early/Lower Bathonian | ||
| Age range of interval: | 170.90000 - 165.30000 m.y. ago |
Stratigraphy
| Geological group: | Yanshiping | Formation: | Matuo | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: GENERAL COMMENT: bivalves are not evenly distributed throughout the sequence, but are concentrated at certain horizons, large parts of the sedimentary sequence in between being unfossiliferous. | |||||
Lithology and environment
| Primary lithology: | lithified marl |
| Secondary lithology: | lithified sandstone |
| Lithology description: The Matuo Fm is composed of marls, silty and fine-grained sandstones. | |
| Environment: | marginal marine indet. |
| Geology comments: The province represents extensive marginal marine environments ranging from nearshore shelf to restricted embayments, lagoons and freshwater lakes. | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | chemical,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: focus on bivalves | |
Metadata
| Database number: | 37897 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2004-03-27 07:05:21 | Last modified: | 2006-09-26 10:07:47 |
| Access level: | the public | Released: | 2004-03-27 07:05:21 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 10105. | J. Yin and F. T. Fürsich. 1991. Middle and Upper Jurassic bivalves from the Tanggula Mountains, W-China. Beringeria, Würzburger geowissenschaftliche Mitteilungen 4:127-192 [M. Aberhan/S. Nurnberg/P. Wagner] |