Where: Heilongjiang, China (44.8° N, 127.3° E: paleocoordinates 32.7° N, 107.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tumenling Formation, Wordian to Wordian (266.9 - 259.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Preservation: mold/impression

Primary reference: Z. F. Liang. 1980. Mollusca. Paleontological Atlas of Northeast China 1:429-484 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111763: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2011

Creative Commons license: CC BY (attribution)