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
Falsicatenipora dazhubaensis
Anthozoa - Heliolitida - Plasmoporellidae
Plasmoporella sp. Kiaer 1899
Anthozoa - Heliolitida - Proporidae
Propora qinlingensis
Anthozoa - Auloporida - Fletcheriellidae
Fletcheriella sp. Sokolov 1955
Anthozoa - Favositida - Alveolitidae
? Subalveolites sp. Sokolov 1955
Anthozoa - Favositida - Pachyporidae
Taxopora salairica
synonym of Cladopora
Anthozoa - Favositida - Multisoleniidae
Mesosolenia sp. Mironova 1960
Anthozoa - Favositida - Favositidae
Favosites gothlandicus Lamarck 1816
Mesofavosites gannanensis
Anthozoa - Stauriida - Entelophyllidae
Stereoxylodes cf. pseudodianthus
synonym of Entelophyllum
Stereoxylodes breviseptatus
synonym of Entelophyllum
Stereoxylodes bailongjiangensis
synonym of Entelophyllum
Anthozoa - Cystiphyllida - Tryplasmatidae
Tryplasma cf. multitabulata
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]