Zhouqu Formation (Lower Part: Shelly Fauna) in Zhouqu County, Gansu Province: Wenlock, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
- Heliolitida
- Halysitidae
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Falsicatenipora dazhubaensis
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Anthozoa
- Heliolitida
- Plasmoporellidae
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Plasmoporella sp.
Kiaer 1899
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Anthozoa
- Heliolitida
- Proporidae
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Propora qinlingensis
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Anthozoa
- Auloporida
- Fletcheriellidae
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Fletcheriella sp.
Sokolov 1955
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Anthozoa
- Favositida
- Alveolitidae
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? Subalveolites sp.
Sokolov 1955
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Anthozoa
- Favositida
- Pachyporidae
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Taxopora salairica
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synonym of Cladopora | |||||||
Anthozoa
- Favositida
- Multisoleniidae
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Mesosolenia sp.
Mironova 1960
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Anthozoa
- Favositida
- Favositidae
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Favosites gothlandicus
Lamarck 1816
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Mesofavosites gannanensis
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Anthozoa
- Stauriida
- Entelophyllidae
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Stereoxylodes cf. pseudodianthus
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synonym of Entelophyllum | |||||||
Stereoxylodes breviseptatus
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synonym of Entelophyllum | |||||||
Stereoxylodes bailongjiangensis
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synonym of Entelophyllum | |||||||
Anthozoa
- Cystiphyllida
- Tryplasmatidae
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Tryplasma cf. multitabulata
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see common names |
Geography
Country: | China | State/province: | Gansu | County: | Zhouqu |
Coordinates: | 34.0° North, 103.0° East (view map) | ||||
Paleocoordinates: | 36.7° South, 127.0° East | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | local area |
Time
Period: | Silurian | Epoch: | Wenlock |
10 m.y. bin: | Silurian 2 | ||
Key time interval: | Wenlock | ||
Age range of interval: | 433.40000 - 427.40000 m.y. ago |
Stratigraphy
Formation: | Zhouqu | ||||
Stratigraphic resolution: | member | ||||
Stratigraphy comments: Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. Two faunas found in the lower part of the formation: a graptolitic fauna, and shelly fauna just below it. Based on fossils, authors infer Wenlockian age. |
Lithology and environment
Primary lithology: | gray sandstone |
Secondary lithology: | cherty/siliceous "limestone" |
Lithology description: At type locality in Baiyikou, Zoge County, NW Sichuan: "total thickness of 982 m. The unit consists of gray or dark-gray, metamorphosed sandstone, slate, and some siliceous limestone." | |
Environment: | marine indet. |
Geology comments: Correlation chart shows BA3 for shelly fauna. |
Taphonomy
Collection methods and comments
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 27914 | ||
Authorizer: | M. Foote | Enterer: | M. Foote |
Modifier: | M. Foote | Research group: | marine invertebrate |
Created: | 2003-01-16 13:51:18 | Last modified: | 2006-09-13 14:01:03 |
Access level: | the public | Released: | 2003-01-16 13:51:18 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
7624. | E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner] |