Tanggula Mountains, Yanshiping Section, Quemuoco Formation: Bajocian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Pectinidae
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Camptonectes (Camptonectes) auritus
(Schlotheim 1813)
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14 specimens | ||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Kobayashites hayamii
Yin 1988
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5 specimens | ||||||
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia (Protocardia) hepingxiangensis
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common category | ||||||
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Bivalvia
- Unionida
- Unionidae
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"Potomida" ovalis
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14 specimens | ||||||
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"Potomida" chaoi
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34 specimens | ||||||
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"Potomida" thailandica
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24 specimens | ||||||
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"Cuneopsis" johannisboehmi
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17 specimens | ||||||
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"Cuneopsis" tanggulaensis n. sp.
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18 specimens | ||||||
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Lamprotula (Eolamprotula) cremeri
(Frech 1911)
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57 specimens | ||||||
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Demospongiae
- Tabulospongida
- Parastromatoporidae
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Hudsonella sinensis
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20 specimens | ||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Qinghai |
| Coordinates: | 33.3° North, 92.0° East (view map) | ||
| Paleocoordinates: | 25.8° North, 89.4° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Bajocian | 10 m.y. bin: | Jurassic 4 |
| Key time interval: | Bajocian | ||
| Age range of interval: | 170.90000 - 168.20000 m.y. ago |
Stratigraphy
| Geological group: | Yanshiping | Formation: | Quemuoco | ||
| 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 "siliciclastic" |
| Lithology description: The Quemuoco Fm at Yanshiping is mainly composed of fine grained and silty sandstones and argillites. | |
| 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
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Fragmentation: | occasional |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | chemical,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: focus on bivalves | |
Metadata
| Database number: | 37885 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | M. Manojlovic | Research group: | marine invertebrate |
| Created: | 2004-03-27 04:56:52 | Last modified: | 2016-07-13 12:40:31 |
| Access level: | the public | Released: | 2004-03-27 04:56:52 |
| 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] |