Tanggula Mountains, H 321, Tuotuohe/Suwa Formation (Jurassic to of China)

Where: Qinghai, China (33.3° N, 90.8° E: paleocoordinates 24.5° N, 88.1° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tuotuohe or Suwa Formation, Bathonian to Bathonian (168.3 - 157.3 Ma)

• locality belongs either to Tuotuohe or Suwa Formation, Bathonian or Oxfordian respectively; 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.

• formation-level stratigraphic resolution

Environment/lithology: marginal marine

• The province represents extensive marginal marine environments ranging from nearshore shelf to restricted embayments, lagoons and freshwater lakes.
• The Tuotuohe Fm is composed of limestones, whereas the Suwa Fm is composed of limestones, fine-grained sandstones and silty sandstones.

Size class: macrofossils

Collection methods: chemical, mechanical,

• focus on bivalves

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37880: authorized by Martin Aberhan, entered by Sabine Nürnberg on 27.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Arcida - Parallelodontidae
"Grammatodon (Cosmetodon) productum" = Cosmetodon
"Grammatodon (Cosmetodon) productum" = Cosmetodon clam