Wangjiawan: Nemakit-Daldynian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Orthothecida
- Circothecidae
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Circotheca sp.
Syssoiev 1958
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| see common names | |||||||
Geography
| Country: | China | State/province: | Yunnan | County: | Jinning |
| Coordinates: | 24.6° North, 102.7° East (view map) | ||||
| Paleocoordinates: | 38.5° North, 163.4° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Terreneuvian |
| 10 m.y. bin: | Cambrian 1-2 | ||
| Key time interval: | Nemakit-Daldynian | ||
| Age range of interval: | 538.80000 - 525.50000 m.y. ago |
Stratigraphy
| Formation: | Dengying | Member: | Xiaowaitoushan |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | lithified dolomite |
| Lithology description: grey, greyish-white medium-bedded phosphoritic dolomite intercalated with chert stripes, 11.2 m thick | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 106505 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate |
| Created: | 2011-03-22 21:47:58 | Last modified: | 2011-03-22 05:47:58 |
| Access level: | the public | Released: | 2011-03-22 21:47:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 33398. | Y. Xing, Q. Ding, and H. Luo. 1982. Biotic characteristics of the Sinian-Cambrian boundary beds in China and the boundary problems. Precambrian Research 17:77-85 [W. Kiessling/U. Merkel] |