Where: Qinghai, China (37.7° N, 98.7° E: paleocoordinates 22.6° N, 80.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Caodigou Formation (Bayinhe Group), Wuchiapingian (259.9 - 254.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Primary reference: Y. J. Lu. 1986. Permian lamellibranchs from Buha River valley, Tianjun district, Qinghai. Acta Palaeontologica Sinica 25(4):463-473 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 112873: authorized by Matthew Clapham, entered by Matthew Clapham on 17.07.2011

Creative Commons license: CC BY (attribution)