Where: Guizhou, China (26.7° N, 106.3° E: paleocoordinates 5.2° N, 95.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Changxing Formation, Changhsingian (254.0 - 252.3 Ma)

• 0.38 m thick

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Primary reference: J. K. Zhao and X. K. Liang. 1974. Permian ammonoids. Handbook of the Stratigraphy and Paleontology of Southwest China 303-307 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98030: authorized by Matthew Clapham, entered by Matthew Clapham on 17.09.2010

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)