Where: Qinghai, China (34.5° N, 99.2° E: paleocoordinates 12.1° N, 83.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bayankalashan Formation, Spathian (251.3 - 247.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: Y. G. Wang, Z. G. Zheng, and G. L. Chen. 1979. Cephalopoda. Paleontological Atlas of Northwest China, Qinghai Volume 1:3-59 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 103163: authorized by Matthew Clapham, entered by Matthew Clapham on 23.01.2011

Creative Commons license: CC BY (attribution)