Xiuzigou, bed 9 (Cambrian of China)

Where: Henan, China (32.8° N, 111.5° E: paleocoordinates 20.8° N, 154.9° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Aspidagnostus primitivus-Aspidagnostus orientalis trilobite zone, Xijiadian Formation, Wangcunian (504.5 - 497.0 Ma)

• 62.6 m thick, Aspidagnostus primitivus-Aspidagnostus orientalis zone of Yang 1993, probably equivalent to Goniagnostus nathorsti zone, Drumian

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified, dolomitic, argillaceous limestone

• platform margin slope
• grey thin-bedded argillaceous dolomitic 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 127074: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Dolichometopidae
Fuchouia oratolimba Yang 1977 trilobite
Artiopoda
 Agnostida -
 Agnostida - Ptychagnostidae
Goniagnostus sp., "Phalagnostus ovalis" = Pseudophalacroma ovale
Goniagnostus sp. Howell 1935
"Phalagnostus ovalis" = Pseudophalacroma ovale Yang 1982
Hexactinellida
 Reticulosa - Protospongiidae
Protospongia sp. Salter 1864 glass sponge