Where: Guizhou, China (26.2° N, 105.5° E: paleocoordinates 5.3° N, 95.4° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Changxing Formation, Changhsingian (254.2 - 252.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: mold/impression

Primary reference: Z. G. Zheng. 1981. Uppermost Permian (Changhsingian) ammonoids from western Guizhou. Acta Palaeontologica Sinica 20(2):107-114 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121689: authorized by Matthew Clapham, entered by Matthew Clapham on 10.12.2011

Creative Commons license: CC BY (attribution)