Where: Nei Mongol, China (44.0° N, 115.0° E: paleocoordinates 30.8° N, 94.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Zhesi Formation, Guadalupian (273.0 - 259.5 Ma)

• Previous geological surveys indicated that the strata belong to the Upper Devonian-Lower Carboniferous Seribayanobao Formation, but the fossils are more consistent with a late Carboniferous-Permian age. Furthermore, the in situ U-Pb isotope dating has demonstrated that most of the detrital zircons recovered from the silt-bearing mudstone were between 276 Ma and 292 Ma in age.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, yellow, silty mudstone

Size class: macrofossils

Preservation: mold/impression

Reposited in the NIGPAS

Primary reference: H. Min, X. L. Wang, H. Wang and G. F. Guo. 2022. A new Permian species of Paraconularia from Abaga Banner, Inner Mongolia. Palaeoworld 31:419-427 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 226940: authorized by Matthew Clapham, entered by Matthew Clapham on 12.08.2022

Creative Commons license: CC BY (attribution)