Laochang, Yujia, Xuanwei Fm, Fuyuan County (Permian of China)

Where: Yunnan, China (25.2° N, 104.5° E: paleocoordinates 4.0° N, 95.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Xuanwei Formation, Changhsingian (254.2 - 252.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

• Contains freshwater and marine bivalves - may be two separate collections or may be marginal-marine.

Size class: macrofossils

Preservation: mold/impression

Primary reference: F. X. Guo. 1985. Fossil Bivalves of Yunnan 1-319 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98543: authorized by Matthew Clapham, entered by Matthew Clapham on 08.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Cardiida - Anthracosiidae
"Palaeanodonta" fuyuanensis n. sp. Guo 1985 clam
"Palaeanodonta" yunnanensis n. sp. Guo 1985 clam
 Trigoniida - Schizodidae
Schizodus dianensis n. sp. Guo 1985 clam