Where: Guangxi, China (25.0° N, 110.0° E: paleocoordinates 1.4° N, 126.2° E)
• coordinate based on political unit
• small collection-level geographic resolution
When: Yujiang Formation, Early/Lower Emsian (409.1 - 402.5 Ma)
• 15 m thick.
•JA: originally entered as Pragian to Emsian; the Yujiang Formation falls in the dehiscens zone according to the authors and is therefore early Emsian
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, gray sandstone and shale
Size class: macrofossils
Primary reference: R. Zhang and J., J.r. Pojeta. 1986. Devonian sections in Guangxi from which pelecypods were collected. Devonian rocks and Lower and Middle pelecypods of Guangxi, China and the Traverse Group of Michigan. United States Geological Survery Professional Paper 1394(E):33-43 [J. Alroy/M. Sommers/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 4800: authorized by John Alroy, entered by Mike Sommers on 24.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Rostroconchia | |
Conocardium sp. Bronn 1835 | |
Bivalvia | |
Cimitaria guangxiensis Zhang 1977 clam | |
? Sanguinolites sp. M'Coy 1844 clam | |
Paracyclas rugosa clam | |
Nuculoidea sp. Williams and Berger 1916 nut clam |