Where: Shaanxi, China (36.9° N, 108.2° E: paleocoordinates 37.8° N, 110.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Huachi-Huanhe Formation (Zhidan Group), Valanginian (139.8 - 132.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified, black, gray, calcareous siltstone

Size class: macrofossils

Preservation: adpression

Primary reference: Y. C. Hong. 1995. Fossil insects of the northern Ordos Basin. Acta Geologica Gansu 4(2):1-9 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140461: authorized by Matthew Clapham, entered by Matthew Clapham on 10.03.2013

Creative Commons license: CC BY (attribution)