Shaiwa section, bed 12 (Permian of China)

Where: Guizhou, China (25.6° N, 106.2° E: paleocoordinates 8.6° S, 95.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chongtou Member (Sidazhai Formation), Kungurian (279.3 - 272.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (); lithified limestone

• Gray medium- to thin-bedded micrite to silty calcarenite, occasionally intercalating thin-bedded siliceous rock with shale, ammonoid-bearing lens ~45 cm in the upper part

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 185574: authorized by Matthew Clapham, entered by Matthew Clapham on 29.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Goniatitida - Agathiceratidae
Agathiceras mediterraneum Toumanskaya 1949 ammonite
 Goniatitida - Perrinitidae
Metaperrinites shaiwaensis n. sp. Zhou 2017 ammonite
 Goniatitida - Adrianitidae
Neocrimites guizhouensis n. sp. Zhou 2017 ammonite
Fusicrimites nanpanjiangensis n. sp. Zhou 2017 ammonite
 Goniatitida - Metalegoceratidae
"Glenisteroceras sidazhaiense n. gen. n. sp." = Glenisterites sidazhaiensis
"Glenisteroceras sidazhaiense n. gen. n. sp." = Glenisterites sidazhaiensis Zhou 2017 ammonite
 Goniatitida - Vidrioceratidae
Prostacheoceras sp. Ruzhencev 1937 ammonite
 Goniatitida - Popanoceratidae
Popanoceras ziyunense n. sp. Zhou 2017 ammonite
 Prolecanitida - Pronoritidae
Parapronorites timorensis Haniel 1915 ammonite