Where: Hebei, China (41.0° N, 118.9° E: paleocoordinates 43.6° N, 121.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Yixian Formation, Late/Upper Barremian (130.0 - 125.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, tuffaceous mudstone

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by Capital Normal University in 2008

Primary reference: K. Y. Zhang, D. Yang, and D. Ren. 2011. A new brachyceran family Origoasilidae Fam. Nov. from the late Mesozoic of China (Insecta: Diptera). Acta Geologica Sinica 85(5):994-997 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118035: authorized by Matthew Clapham, entered by Matthew Clapham on 04.10.2011

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)