Duibian B, 18.5m (Cambrian of China)

Where: Zhejiang, China (28.8° N, 118.6° E: paleocoordinates 17.6° N, 146.6° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Tomagnostella orientalis trilobite zone, Huayansi Formation, Paibian (497.0 - 494.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

• outermost part of the Jiangnan Slope Belt, adjacent to the Jiangnan Basin
• dark, thin-bedded, argillaceous and laminated limestones; light-colored ribbon limestones are present in places

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: S. C. Peng, L. E. Babcock, J. X. Zuo, H. L. Lin, X. J. Zhu, X. F. Yang, Y. P. Qi, G. Bagnoli, and L. W. Wang. 2009. Proposed GSSP for the base of Cambrian Stage 9, coinciding with the first appearance of Agnostotes orientalis, at Duibian, Zhejiang, China. Science in China, D Earth Sciences 52(4):434-451 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 128289: authorized by Wolfgang Kiessling, entered by Uta Merkel on 05.06.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Artiopoda
 Agnostida - Spinagnostidae
Peratagnostus obsoletus, Tomagnostella orientalis
Peratagnostus obsoletus Kobayashi 1935
 Agnostida - Diplagnostidae
Pseudagnostus vastulus
Pseudagnostus vastulus Whitehouse 1936
Trilobita
 Asaphida - Ceratopygidae
"Proceratopyge truncata" = Proceratopyge truncatus, Proceratopyge protracta
"Proceratopyge truncata" = Proceratopyge truncatus Yang 1977 trilobite
Proceratopyge protracta Peng 1992 trilobite