Paibi section, bed 28b (Cambrian of China)

Where: Hunan, China (28.4° N, 109.5° E: paleocoordinates 24.0° N, 150.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Linguagnostus reconditus trilobite zone, Huaqiao Formation, Guzhangian (500.5 - 497.0 Ma)

• bed 28b (upper bed 28): 293-293.5 m, Wanshania wanshanensis polymerid trilobite zone, Youshuian, Upper Guzhangian

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified packstone and lithified, argillaceous limestone

• Jiangnan Slope Belt, lower slope environments with sediment-gravity flows
• medium to dark-gray, thin-bedded packstone, intercalated with numerous dark-gray, thin-bedded, laminated argillaceous limestone beds, and two intercalated layers of gray, medium-bedded limestone breccia

Size class: macrofossils

Primary reference: S. Peng and R. A. Robison. 2000. Agnostid biostratigraphy across the Middle-Upper Cambrian boundary in Hunan, China. Journal of Paleontology Memoir 53 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49179: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2005, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Agnostidae
Hadragnostus modestus Lochman 1944
Kormagnostus minutus Schrank 1975
 Agnostida - Diplagnostidae
Linguagnostus reconditus Poletaeva and Romanenko 1970
 Agnostida - Ammagnostidae
Proagnostus bulbus Butts 1926
 Agnostida - Ptychagnostidae
Trilobita
 Ptychopariida - Diceratocephalidae
 Corynexochida - Leiostegiidae
Wanshania wanshanensis Rong and Yang 1977 trilobite
 Lichida - Damesellidae
Palaeadotes hunanensis Yang 1977 trilobite
Parablackwelderia jimaensis Yang 1974 trilobite