Naozizhai, bed 4 (Cambrian of China)

Where: Henan, China (33.1° N, 111.5° E: paleocoordinates 23.1° N, 159.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hupeidiscus-Sinodiscus trilobite zone, Wangjiadian Formation, Nangaoian (521.0 - 514.0 Ma)

• 5.1 m thick, Hupeidiscus-Sinodiscus zone of Yang 1993

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified limestone

• open platform
• grey thin-bedded fine crystalline limestone

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: J. Yang, S. Yu, G. Liu, N. Su, M. He, J. Shang, H. Zhang, H. Zhu, Y. Li and G. Yan. 1993. Cambrian stratigraphy, lithofacies, paleogeography and trilobite faunas of East Qinling-Dabashan Mountains, China 1-246 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 127086: authorized by Wolfgang Kiessling, entered by Uta Merkel on 24.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Tsunyidiscidae
"Hupeidiscus shipaiensis" = Tsunyidiscus
"Hupeidiscus shipaiensis" = Tsunyidiscus
 Agnostida - Calodiscidae
Lingulata
 Acrotretida - Acrotretidae
Prototreta sp. Bell 1941