Sidazhai section, KTP5-23 (Permian of China)

Where: Guizhou, China (25.6° N, 106.2° E: paleocoordinates 1.2° N, 97.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: 3 Member (Shaiwa Formation), Wuchiapingian (259.9 - 254.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siltstone

• Dark-gray, medium- to thick-bedded, massive siltite, intercalating dark-gray, thinbedded claystone

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 185562: authorized by Matthew Clapham, entered by Matthew Clapham on 29.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ceratitida - Xenodiscidae
? Xenodiscus sp. Waagen 1879 ceratite
 Ceratitida - Araxoceratidae
Eoaraxoceras spinosai n. sp. Zhou 2017 ceratite
 Goniatitida - Adrianitidae
Epadrianites involutus Haniel 1915 ammonite
 Goniatitida - Cyclolobidae
? Timorites sp. Haniel 1915 ammonite
 Goniatitida - Vidrioceratidae
Stacheoceras shaiwaense Zhou 2017 ammonite
 Prolecanitida - Medlicottiidae
Difuntites furnishi Zhou 2017 ammonite