Wuding [Yuanshan Fm (formerly Qiongzhusi)]: Atdabanian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Fuxianospira gyrata
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Chen et al. 2002 | ||||||
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Bradoriida
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Kunmingella doubillei
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Chen et al. 2002 | ||||||
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Waptiida
- Waptiidae
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Chuandianella ovata
(Li 1975)
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Chen et al. 2002 | ||||||
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Isoxyida
- Isoxyidae
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Isoxys auritus
Jiang 1982
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Chen et al. 2002 | ||||||
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Trilobita
- Redlichiida
- Redlichiidae
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Eoredlichia intermedia
(Lu 1940)
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Chen et al. 2002 | ||||||
| recombined as Eoredlichia intermediata | |||||||
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Wutingaspis tingi
Kobayashi 1944
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Chen et al. 2002 | ||||||
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Radiodonta
- Amplectobeluidae
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Amplectobelua trispinata
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Lingulata
- Lingulida
- Botsfordiidae
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Diandongia pista
Rong 1974
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| see common names | |||||||
Geography
| Country: | China | State/province: | Yunnan | County: | Wuding |
| Coordinates: | 25.5° North, 102.4° East (view map) | ||||
| Paleocoordinates: | 34.7° North, 161.8° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | local area |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| Stage: | Stage 3 | 10 m.y. bin: | Cambrian 2 |
| Key time interval: | Atdabanian | ||
| Age range of interval: | 521.00000 - 515.60000 m.y. ago |
Stratigraphy
| Formation: | Yuanshan | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: LITHOSTRATIGRAPHY: Formerly from the Yuanshan Mbr, Qiongzhusi Fm. Yuanshan is raised to formation rank in recent publications (Steiner 2005, 2007). AGE: Qiongzhusian in Steiner (2005); correlates to Atdabanian (Steiner, 2007). STRATIGRAPHIC POSITION: From the upper Yuanshan Fm. | |||||
Lithology and environment
| Primary lithology: | planar lamination,gray,green,yellow lithified carbonaceous mudstone |
| Includes fossils? | Y |
| Lithology description: LITHOLOGY: Dark grey-green (yellow, when weathered), finely laminated mudstones, containing organic hash in great quantity. LITHIFICATION: Lithified, on the basis of figures. | |
| Environment: | marine indet. |
| Geology comments: "benthic sediment flows... are believed to have been the the principal method of burial" (Shu et al. 1999b)
"presence of agglutinated quartz grains, substantially coarser than the surrounding matrix... suggests... that the animal inhabited a higher-energy, sandy sea floor and was transported" (Shu et al. 2001) | |
Taphonomy
| Modes of preservation: | body,adpression,soft parts |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Multiple collectors. REPOSITORY: Not stated in text. | |
| Taxonomic list comments:COVERAGE: Exhaustive for all groups. NOMENCLATURE: From a combination of authoritative and review publications, with modern nomenclature and species-resolution identifications. | |
Metadata
| Also known as: | Chengjiang biota | ||
| Database number: | 86847 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-02-21 12:32:55 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-02-21 12:32:55 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 29233. | M. Steiner, M. Zhu, Y. Zhao and B.-D. Erdtmann. 2005. Lower Cambrian Burgess Shale-type fossil associations of South China. Palaeogeography, Palaeoclimatology, Palaeoecology 220:129-152 [A. Hendy/A. Hendy] |
Secondary references:
| 29234 | L. Chen, H. Luo, S. Hu, J. Yin, Z. Jiang, Z. Wu, F. Li and A. Chen. 2002. Early Cambrian Chengjiang fauna in eastern Yunnan, CHina. Yunnan Science and Technology Press, Kunming 1-199 [A. Hendy/A. Hendy] |