Golmud City, Qinghai (No. A), Qoimaco Formation: Bajocian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Pectinida
- Anomiidae
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Placunopsis sp.
Morris and Lycett 1853
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Bivalvia
- Pectinida
- Propeamussiidae
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Propeamussium (Propeamussium) pumilum
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original and current combination Pecten (Propeamusium) | |||||||
Bivalvia
- Pectinida
- Pectinidae
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Camptonectes (Camptonectes) auritus
(Schlotheim 1813)
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Bivalvia
- Ostreida
- Bakevelliidae
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Kobayashites sp.
Hayami 1959
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Kobayashites cf. hayamii
Yin 1988
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Bivalvia
- Mytilida
- Mytilidae
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Lycettia sp.
Cox 1937
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Modiolus sp.
(Lamarck 1801)
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Homomya sp.
Agassiz 1843
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Bivalvia
- Cardiida
- Arcticidae
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Anisocardia (Anisocardia) togtonheensis
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Bivalvia
- Cardiida
- Quenstedtiidae
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Quenstedtia sp.
Morris 1854
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see common names |
Geography
Country: | China |
Coordinates: | 33.8° North, 91.3° East (view map) |
Paleocoordinates: | 26.2° North, 88.8° 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: | 170.30000 - 168.30000 m.y. ago |
Stratigraphy
Formation: | Qoimaco |
Stratigraphic resolution: | formation |
Lithology and environment
Primary lithology: | gray,red lithified silty sandstone |
Secondary lithology: | lithified breccia |
Lithology description: This formation is composed mainly of dark red, scarlet, grey, dark grey detritus-quartzsandstone, quartz-sandstone, siltstone; the bottom is formed by polymict breccias, with rare oospararenite and finegrained calcarenite in the lower part and carbonate fine conglomerat | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | paleoecologic analysis |
Metadata
Database number: | 127175 | ||
Authorizer: | M. Aberhan | Enterer: | D. Wellmanns |
Modifier: | D. Wellmanns | Research group: | marine invertebrate |
Created: | 2012-05-01 00:21:04 | Last modified: | 2012-04-30 09:23:38 |
Access level: | authorizer only | Released: | 2017-05-01 00:21:04 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
41317. | H. Z. Yao, R. J. Zhang, Q. F. Duan, X. C. Sheng, Z. J. Niu, J. X. Wang, B. F. Zeng and J. H. Wu. 2011. Jurassic rocks, bivalves, and depositional environments of the source area of the Yangtze River, Qinghai Province, western China. Sci China Earth Sci 54(8):1136-1148 [M. Aberhan/D. Wellmanns] |