Where: Qinghai, China (33.3° N, 92.0° E: paleocoordinates 25.6° N, 89.4° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Matuo Formation (Yanshiping Group), Bajocian to Bajocian (170.3 - 164.7 Ma)
• 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; lithified marl and lithified, silty sandstone
Size class: macrofossils
Preservation: mold/impression
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 37883: authorized by Martin Aberhan, entered by Sabine Nürnberg on 27.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Lycettia cf. lunularis Lycett 1857 mussel
Modiolus (Modiolus) imbricatus Sowerby 1818 mussel | |
Pteria plana Morris and Lycett 1854 pearl oyster | |
Aguilerella acutilobata oyster | |
Camptonectes (Camptonectes) auritus Schlotheim 1813 scallop | |
? Astarte sp. Sowerby 1816 clam | |
Osteomya dilata Phillips 1829 clam | |
Protocardia (Protocardia) stricklandi Morris and Lycett 1853 cockle | |
Eomiodon angulatus clam | |
Ceratomyopsis sp. Cossmann 1915 clam | |
Pleuromya uniformis Sowerby 1813 clam | |
Ceratomya excentrica Roemer 1836 clam |