Tanggula Mountains, Y 217-9, Suwa Formation: Oxfordian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pholadida - Ceratomyidae
Myopholas multicostata (Agassiz 1842)
10 specimens
see common names

Geography
Country:China State/province:Qinghai
Coordinates: 33.3° North, 91.8° East (view map)
Paleocoordinates:24.0° North, 89.0° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Stage:Oxfordian 10 m.y. bin:Jurassic 5
Key time interval:Oxfordian
Age range of interval:161.50000 - 154.80000 m.y. ago
Stratigraphy
Geological group:Tanggula Formation:Suwa
Stratigraphic resolution:formation
Stratigraphy comments: GENERAL COMMENT: bivalves are not evenly distributed throughout the sequence, but are concentrated at certain horizons, large parts of the sedimentary sequence in between being unfossiliferous.
Lithology and environment
Primary lithology: lithified "limestone"
Secondary lithology: lithified sandstone
Lithology description: The Suwa Fm is composed of limestones, silty and fine grained sandstones.
Environment:marginal marine indet.
Geology comments: The province represents extensive marginal marine environments ranging from nearshore shelf to restricted embayments, lagoons and freshwater lakes.
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Collection methods:chemical,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: focus on bivalves
Metadata
Database number:37926
Authorizer:M. Aberhan Enterer:S. Nurnberg
Modifier:S. Nurnberg Research group:marine invertebrate
Created:2004-03-27 11:06:40 Last modified:2006-09-26 10:03:23
Access level:the public Released:2004-03-27 11:06:40
Creative Commons license:CC BY
Reference information

Primary reference:
10105. J. Yin and F. T. Fürsich. 1991. Middle and Upper Jurassic bivalves from the Tanggula Mountains, W-China. Beringeria, Würzburger geowissenschaftliche Mitteilungen 4:127-192 [M. Aberhan/S. Nurnberg/P. Wagner]