Unit 25, Dachensi Fm., Dongpo Emeishan: Arenig, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Phichedia sp.
Trilobita - Asaphida - Asaphidae
Psilocephalina sp. Hsu 1948
Trilobita - Asaphida - Taihungshaniidae
Taihungshania sp. Sun 1931
see common names

Geography
Country:China State/province:Sichuan
Coordinates: 30.0° North, 103.0° East (view map)
Paleocoordinates:20.1° North, 142.6° East
Geographic resolution:local area
Time
Period:Ordovician
10 m.y. bin:Ordovician 2
*Period:Early/Lower Ordovician *Epoch:Late/Upper Arenig
*International age/stage:Late/Upper Arenig
Key time interval:Arenig
Age range of interval:477.70000 - 468.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Dachengsi
Stratigraphic resolution:group of beds
Stratigraphy comments: Sec. 25
Lithology and environment
Primary lithology: lithified siltstone
Secondary lithology: "shale"
Lithology description: siltstone and shale
Environment:shoreface
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:species names
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:7268
Authorizer:A. Miller Enterer:P. Novack-Gottshall
Modifier:P. Wagner Research group:marine invertebrate
Created:2000-05-21 15:44:41 Last modified:2018-05-12 00:47:23
Access level:the public Released:2000-05-21 15:44:41
Creative Commons license:CC BY
Reference information

Primary reference:
288. R. Wang. 1981. Stratigraphic Summary of the Southwestern Region of China. Institute of Geology and Mine Deposit at Chengdu, Ministry of Geology (not published, copy of article deposited with A. I. Miller at the University of Cincinnati, received through S. Mao) 14-61 [A. Miller/P. Novack-Gottshall]