Upper Upper Kaochaitien Fm, Luoshuichong, Mairang, Wudang, Guiyang, Guizhou Prv.: Sheinwoodian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cyrtodontida - Cyrtodontidae
Cyrtodonta sp. Billings 1858
Bivalvia - Modiomorphida - Modiomorphidae
Modiomorpha sp. Hall and Whitfield 1869
Bivalvia - Solemyida - Ctenodontidae
Ctenodonta sp. Salter 1852
Rhynchonellata - Spiriferida - Cyrtiidae
Eospirifer sp. Schuchert 1913
Eospirifer cf. radiatus (Sowerby 1834)
see common names

Geography
Country:China State/province:Guizhou County:Wudang
Coordinates: 26.6° North, 106.8° East (view map)
Paleocoordinates:8.0° North, 127.0° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
Stage:Sheinwoodian 10 m.y. bin:Silurian 2
Key time interval:Sheinwoodian
Age range of interval:433.40000 - 430.50000 m.y. ago
Stratigraphy
Formation:Upper Kaochaitien
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. Upper K. Fm. divided into three parts, and as a whole spans the Late Llandovery to Early Wenlock, according to correlation chart. "The fossils from the middle part correlate with those of the Xiushan Formation. Therefore, the lower part of this formation is correlated with the Rongxi Formation [which is herein regarded as middle Late Llandovery], and the upper part is missing in many areas, but may be correlated with the Huixingshao Formation red beds [which are thought herein to be Wenlock, although with some uncertainty]. These formations are close to the Llandovery-Wenlock boundary, but the fossils do not permit precise zonation." This discussion suggests that a lower part is Late Llandovery, middle part is Llandovery to Wenlock, and upper part is Wenlock.
Lithology and environment
Primary lithology:gray,green,red or brown "shale"
Secondary lithology: sandstone
Includes fossils?Y
Lithology description: "The upper part consists of gray-green and purplish-red, thin-bedded shale with intercalated fine-grained sandstone, containing [fossils]..."
Environment:marine indet.
Geology comments: Correlation chart shows shelly-based BA1.
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:27787
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2003-01-09 08:33:47 Last modified:2006-09-13 14:01:03
Access level:the public Released:2003-01-09 08:33:47
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]