Where: Gansu, China (39.8° N, 97.3° E: paleocoordinates 40.4° N, 92.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Zhonggou Formation, Middle Albian (109.0 - 105.3 Ma)

• Upper part of Zhonggou Formation. Formation is Early-Middle Albian according to Zheng et al. (2021), so Middle Albian age assigned here.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified mudstone

Size class: macrofossils

Preservation: adpression

Reposited in the NIGPAS

Primary reference: D. R. Zheng, H. C. Zhang, Q. Zhang, S. Li, H. Wang, Y. Fang, Q. Liu, E. A. Jarzembowski, E. Yan and B. Wang. 2015. The discovery of an Early Cretaceous dragonfly Hemeroscopus baissicus Pritykina, 1977 (Hemeroscopidae) in Jiuquan, Northwest China, and its stratigraphic implications. Cretaceous Research 52:316-322 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 164492: authorized by Matthew Clapham, entered by Matthew Clapham on 03.12.2014

Creative Commons license: CC BY (attribution)