Level BH-2 Section A - Germig, Tibet: Rhaetian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Ostreida
- Cassianellidae
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Cassianella sp.
Beyrich 1862
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3 specimens | |||||||||
| 3 left valves (1 measurement) | ||||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte sp.
Sowerby 1816
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10 specimens | |||||||||
| more than 20 specimens from two samples (5 measurements) | ||||||||||
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Bivalvia
- Nuculanida
- Polidevciidae
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Ryderia guangdongensis
(Zhang 1977)
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| see common names | ||||||||||
Geography
| Country: | China | State/province: | Tibet |
| Coordinates: | 28.7° North, 86.1° East (view map) | ||
| Paleocoordinates: | 29.1° South, 47.9° East | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 4400 meters |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Rhaetian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Rhaetian | ||
| Age range of interval: | 208.50000 - 201.40000 m.y. ago |
Stratigraphy
| Formation: | Germig | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Below ammonite Level A1 | |||||
Lithology and environment
| Primary lithology: | fine,gray lithified calcareous sandstone |
| Secondary lithology: | lithified siltstone |
| Environment: | marine indet. |
| Geology comments: The diverse epifauna, in combination with their common association with crinoids and a high degree of encrustation and bioerosion on the shells, suggest a shallow, warm, and low turbidity marine environment of normal salinity. | |
Taphonomy
| Size of fossils: | macrofossils |
| Bioerosion: | frequent |
| Encrustation: | frequent |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Bivalves only | |
Metadata
| Database number: | 75199 | ||
| Authorizer: | W. Kiessling, M. Clapham | Enterer: | W. Kiessling, M. Clapham |
| Modifier: | W. Kiessling | Research group: | marine invertebrate |
| Created: | 2007-09-26 08:56:11 | Last modified: | 2007-09-27 04:09:21 |
| Access level: | group members | Released: | 2009-09-26 08:56:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25381. | J. Yin and C. A. McRoberts. 2006. Latest Triassic–earliest Jurassic bivalves of the Germig formation from Lanongla (Tibet, China). Journal of Paleontology 80(1):104-120 [W. Kiessling/W. Kiessling] |