Unit 31, Dawan Fm., Lower Mbr., Huanghuachang and Yiching, Hubei Prov., China: Arenig, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Pentamerida - Clarkellidae
Yangtzeella sp. Kolarova 1925
Rhynchonellata - Orthida - Paurorthidae
Nereidella sp.
Rhynchonellata - Orthida - Orthidae
Sinorthis sp.
Rhynchonellata - Orthida - Plectorthidae
Mimella sp. Cooper 1930
Gastropoda - Euomphalina - Ophiletidae
Ecculiomphalus sp. Portlock 1843
Cephalopoda - Ellesmerocerida - Bathmoceratidae
Bathmoceras sp. Barrande 1865
Conodonta - Conodontophorida
Protopanderodus sp.
Oistodus sp.
Paroistodus sp. Lindström 1971
Conodonta - Ozarkodinida
Periodon sp. Hadding 1913
Conodonta - Balognathidae
Baltoniodus sp.
Conodonta - Strachanognathidae
Scolopodus sp.
Conodonta - Protopanderodontida
Drepanoistodus sp. Lindstrom 1971
Pterobranchia - Phyllograptidae
Phyllograptus sp. Hall 1858
Pterobranchia
Azygograptus sp. Nicholson and Lapworth 1875
Rhombifera - Hemicosmitidae
Hemicosmites sp. Buch 1840
see common names

Geography
Country:China State/province:Hubei
Coordinates: 33.0° North, 111.0° East (view map)
Paleocoordinates:12.8° North, 140.9° East
Geographic resolution:local area
Time
Period:Ordovician
10 m.y. bin:Ordovician 2
*Period:Early/Lower Ordovician *Epoch:Early/Lower Arenig
Key time interval:Arenig
Age range of interval:478.60000 - 466.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Dawan Member:Lower
Local section:31
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified lime mudstone
Secondary lithology: "shale"
Environment:offshore shelf
Geology comments: Nodular micrite and mudstone
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:4718
Authorizer:A. Miller Enterer:P. Novack-Gottshall
Research group:marine invertebrate
Created:1999-08-18 07:08:13 Last modified:1999-08-18 10:08:13
Access level:the public Released:2000-11-20 13:53:23
Creative Commons license:CC BY
Reference information

Primary reference:

287. X. Wang, L. Xian, S. Ni, Q. Zheng, G. Xu, T. Zhou, C. Lai and Z. Li. 1987. Biostratigraphy of the Yangtze Gorge Area. Part (2) Early Paleozoic Era. Geological Publishing House, Beijing 43-142 [A. Miller/P. Novack-Gottshall]