Where: Guangxi, China (24.1° N, 110.0° E: paleocoordinates 0.6° N, 123.6° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Ertang Formation, Late/Upper Emsian (402.5 - 391.9 Ma)
• 25 m thick. [JA: originally entered as Emsian; Polygnathus inversus and P. serotinus are present in the lowest unit of the "Sipaian Stage" (probably this formation), so it is late Emsian]
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, gray, green siltstone
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 4056: authorized by John Alroy, entered by Mike Sommers on 13.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
| |
Sinodora sp. Pojeta and Zhang 1984 clam | |
Paracyclas rugosa clam | |
Lyriopecten sp. Hall 1877 scallop | |
"Pterinopecten (Newellipecten) quangxiensis" = Newellipecten, "Pterinopecten (Newellipecten) guipingensis" = Newellipecten
| |
"Ptychopteria (Actinopteria) sp." = Actinopteria
|