Sidazhai section, KTP5-35 (Permian of China)

Where: Guizhou, China (25.6° N, 106.2° E: paleocoordinates 5.2° N, 96.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: 4 Member (Shaiwa Formation), Changhsingian (254.2 - 252.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified claystone

• Dark-gray, medium- to thin-bedded claystone in upper 4 m; cyclothemic sandstone, claystone, and siliceous rock elsewhere

Size class: macrofossils

Reposited in the NIGPAS

Primary reference: Z. R. Zhou. 2017. Permian basinal ammonoid sequence in Nanpanjiang area of South China - possible overlap between basinal Guadalupian and platform-based Lopingian. Journal of Paleontology 91(Memoir 74):1-95 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185545: authorized by Matthew Clapham, entered by Matthew Clapham on 27.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Goniatitida - Paragastrioceratidae
? Pseudogastrioceras sp. Spath 1936 ammonite
 Prolecanitida - Medlicottiidae
Medlicottiidae indet. Karpinsky 1889 ammonite