Paibi section, bed 25a (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: Lejopyge laevigata trilobite zone, Huaqiao Formation, Guzhangian (500.5 - 497.0 Ma)

• bed 25a (lower bed 25): 223.5-240 m, Pianaspis sinensis polymerid trilobite zone

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified packstone

• Jiangnan Slope Belt, lower slope environments with sediment-gravity flows
• dark-gray, thin-bedded packstone, intercalated with dark-gray, thin-bedded, laminated packstone and 5 layers of medium gray, medium-bedded limestone breccia (each about 0.4 m thick)

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 49173: 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 - Phalacromidae
Lisogoragnostus hybus Peng and Robison 2000
 Agnostida - Diplagnostidae
 Agnostida -
 Agnostida - Ammagnostidae
 Agnostida - Spinagnostidae
Hypagnostus parvifrons Linnarsson 1869
 Agnostida - Ptychagnostidae
"Lejopyge laevigata" = Lejopyge laevigatus
"Lejopyge laevigata" = Lejopyge laevigatus Dalman 1828
Trilobita
 Ptychopariida - Solenopleuridae
Huzhuia paratypica Yang 1978 trilobite
 Ptychopariida - Lisaniidae
"Baojingia subquadrata" = Eoshengia, "Baojingia paralala" = Eoshengia
"Baojingia subquadrata" = Eoshengia trilobite
"Baojingia paralala" = Eoshengia trilobite
 Corynexochida - Dolichometopidae
Fuchouia oratolimba Yang 1977 trilobite
 Lichida - Damesellidae
Parablackwelderia jimaensis Yang 1974 trilobite