Where: China (34.0° N, 91.2° E: paleocoordinates 26.4° N, 88.6° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Qoimaco Formation, Bajocian (170.3 - 168.3 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; lithified, gray, red, silty sandstone and lithified breccia
•mainly of dark red, scarlet, grey, dark grey detritus-quartzsandstone,
•quartz-sandstone, siltstone; the bottom is formed
•by polymict breccias, with rare oospararenite and finegrained
•calcarenite in the lower part and carbonate fine
•conglomerat
Size class: macrofossils
Primary reference: H. Z. Yao, R. J. Zhang, Q. F. Duan, X. C. Sheng, Z. J. Niu, J. X. Wang, B. F. Zeng and J. H. Wu. 2011. Jurassic rocks, bivalves, and depositional environments of the source area of the Yangtze River, Qinghai Province, western China. Sci China Earth Sci 54(8):1136-1148 [M. Aberhan/D. Wellmanns]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 127176: authorized by Martin Aberhan, entered by Daniel Wellmanns on 01.05.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Camptonectes (Camptonectes) auritus Schlotheim 1813 scallop | |
Placunopsis sp. Morris and Lycett 1853 scallop | |
Propeamussium (Propeamussium) pumilum mud scallop | |
Kobayashites sp. Hayami 1959 oyster
Kobayashites cf. hayamii Yin 1988 oyster | |
Homomya sp. Agassiz 1843 clam |