Where: Jilin, China (43.4° N, 125.9° E: paleocoordinates 49.9° N, 136.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Xiaofengmidingzi Formation, Early/Lower Jurassic (201.4 - 174.7 Ma)

• Recently, updated isotopic dating at the type locality of the Xiaofengmidingzi Formation and other sites show that the zircon U-Pb age of the rhyolite in type locality is 192 ± 2 Ma (Early Jurassic), while the zircon U-Pb age of the andesite in other sites is 172 ± 1 Ma (Middle Jurassic).

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified siltstone

Size class: macrofossils

Preservation: adpression

Reposited in the NIGPAS

Primary reference: X. N. Lian, C. Y. Cai, and D. Y. Huang. 2020. A new mesopanorpodid scorpionfly (Insecta: Mecoptera) from the Mesozoic of Jilin Province, northeastern China. Palaeoentomology 3:574-577 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 228881: authorized by Matthew Clapham, entered by Matthew Clapham on 15.01.2023

Creative Commons license: CC BY (attribution)