Shenjiawan, unit 8, 23 (Cambrian of China)

Where: Hunan, China (29.1° N, 111.0° E: paleocoordinates 20.7° N, 147.1° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Agnostotes clavatus-Irvingella angustilimbata trilobite zone, Huaqiao Formation, Taoyuanian (498.5 - 485.4 Ma)

• Sample 23 of bed 8. Peng 1992 included the bed in the Bitiao Formation, but following revision of stratigraphic nomenclature (Peng & Robison, 2000), the Huaqiao, Chefu, and Bitiao formations have been grouped into a single unit, the Huaqiao Formation.

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

• Jiangnan Slope Belt
• argillaceous, laminated limestone

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: S. Peng. 1992. Upper Cambrian biostratigraphy and trilobite faunas of the Cili-Taoyuan area, northwestern Hunan, China. Memoir of the Association of Australasian Palaeontologists 13:1-119 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 126688: authorized by Wolfgang Kiessling, entered by Uta Merkel on 12.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Olenida - Aphelaspidae
 Corynexochida - Corynexochidae
Corynexochus plumula Whitehouse 1939 trilobite
 Corynexochida - Leiostegiidae
Prochuangia granulosa Lu 1956 trilobite
 Ptychopariida - Elviniidae
Irvingella angustilimbata Kobayashi 1938 trilobite
 Ptychopariida - Norwoodiidae
? Hardyoides sinensis Peng 1992 trilobite
 Asaphida - Ceratopygidae
Artiopoda
 Agnostida - Spinagnostidae
 Agnostida - Agnostidae
 Agnostida - Diplagnostidae
Agnostotes latilimbatus n. sp. Peng 1992
Pseudagnostus vastulus Whitehouse 1936