Shenjiawan, unit 7, 22 (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 22 of bed 7. 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 126687: authorized by Wolfgang Kiessling, entered by Uta Merkel on 12.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida - Elviniidae
Irvingella angustilimbata Kobayashi 1938 trilobite
 Asaphida - Ceratopygidae
"Proceratopyge cf. truncata" = Proceratopyge truncatus
"Proceratopyge cf. truncata" = Proceratopyge truncatus Yang 1977 trilobite
 Olenida - Pterocephaliidae
Protemnites waergangensis Peng 1992 trilobite
 Olenida - Aphelaspidae
Eugonocare (Olenaspella) cylindrata n. sp. Peng 1992 trilobite
Artiopoda
 Agnostida - Spinagnostidae
 Agnostida - Agnostidae
Acutatagnostus chinensis n. sp. Peng 1992
 Agnostida - Diplagnostidae
"Agnostotes (Pseudoglyptagnostus) clavatus" = Agnostotes orientalis Kobayashi 1935
Pseudagnostus vastulus Whitehouse 1936