Where: Shaanxi, China (36.6° N, 109.4° E)

• Paleocoordinates: 43.1° N, 120.5° E (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Yan'an Formation, Aalenian (174.1 - 170.3 Ma)

• High-precision U-Pb zircon geochronological ages (CA-ID-TIMS) of 173.992 ± 0.053 Ma and 171.975 ± 0.047 Ma, analyzed from the middle sections of the Yan'an Formation in the northeastern Erdos Basin, indicating an Aalenian age.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified shale

Size class: macrofossils

Preservation: adpression

Reposited in the NIGPAS

Primary reference: Y. Z. Fu and D. Y. Huang. 2020. A new fossil cercopoid from the middle Jurassic Ordos and Jiyuan basins, northern China (Hemiptera, Cicadomorpha). Historical Biology 33:2025-2030 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 222545: authorized by Matthew Clapham, entered by Matthew Clapham on 29.09.2021

Creative Commons license: CC0 (CC0)