Paibi section, bed 27 (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: Proagnostus bulbus trilobite zone, Huaqiao Formation, Guzhangian (500.5 - 497.0 Ma)

• bed 27: 279.6-284.8 m, Wanshania wanshanensis polymerid trilobite zone

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified limestone and lithified packstone

• Jiangnan Slope Belt, lower slope environments with sediment-gravity flows
• base and top with a single layer of thick-bedded limestone breccia (1.9 m and 1.2 m thick respectively), interbedded with dark-gray, thin-bedded, trilobite-bearing packstone layers

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 49177: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2005, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

 Agnostida - Phalacromidae
Lisogoragnostus mictus Peng and Robison 2000
 Agnostida - Agnostidae
 Agnostida - Clavagnostidae
 Agnostida -
 Agnostida - Spinagnostidae
Hypagnostus parvifrons Linnarsson 1869
 Agnostida - Diplagnostidae
Linguagnostus stenus Peng and Robison 2000
 Agnostida - Ammagnostidae
Proagnostus bulbus Butts 1926
 Lichida - Damesellidae
Teinistion posterocostum Yang 1977 trilobite
Paradamesella peculiaris Zhou 1977 trilobite
Protaitzehoia granifera Yang 1978 trilobite
Palaeadotes hunanensis Yang 1977 trilobite
Parablackwelderia jimaensis Yang 1974 trilobite
 Olenida - Asaphiscidae
 Corynexochida - Dolichometopidae
Fuchouia oratolimba Yang 1977 trilobite
 Corynexochida - Dorypygidae
Dorypyge perconvexalis Yang 1977 trilobite
 Corynexochida - Corynexochidae
Chatiania convexa Peng et al. 2004 trilobite
 Corynexochida - Leiostegiidae
Wanshania wanshanensis Rong and Yang 1977 trilobite
  - Monkaspididae
Monkaspis quadrata Yang 1977 trilobite
 Ptychopariida - Catillicephalidae
Buttsia globosa Lu and Lin 1987 trilobite
 Ptychopariida - Diceratocephalidae
Ajrikina hunanensis Peng 1987 trilobite
 Trinucleida - Alsataspididae
Torifera tuma Yang 1977 trilobite