PBDB Collection

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

Show authors, comments, and common names

Trilobita
- Monkaspididae	Monkaspis quadrata Monkaspis quadrata Yang 1977 trilobite
Ptychopariida - Diceratocephalidae	Ajrikina hunanensis Ajrikina hunanensis Peng 1987 trilobite
Ptychopariida - Catillicephalidae	Buttsia globosa, Madarocephalus orientalis Buttsia globosa Lu and Lin 1987 trilobite Madarocephalus orientalis trilobite
Trinucleida - Alsataspididae	Torifera tuma Torifera tuma Yang 1977 trilobite
Lichida - Damesellidae	Adelogonus hunanensis, Palaeadotes hunanensis, Teinistion posterocostum, Protaitzehoia granifera, Parablackwelderia jimaensis, Paradamesella peculiaris Adelogonus hunanensis trilobite Palaeadotes hunanensis Yang 1977 trilobite Teinistion posterocostum Yang 1977 trilobite Protaitzehoia granifera Yang 1978 trilobite Parablackwelderia jimaensis Yang 1974 trilobite Paradamesella peculiaris Zhou 1977 trilobite
Corynexochida - Dolichometopidae	Fuchouia oratolimba Fuchouia oratolimba Yang 1977 trilobite
Corynexochida - Leiostegiidae	Wanshania wanshanensis Wanshania wanshanensis Rong and Yang 1977 trilobite
Corynexochida - Corynexochidae	Chatiania convexa Chatiania convexa Peng et al. 2004 trilobite
Corynexochida - Dorypygidae	Dorypyge perconvexalis Dorypyge perconvexalis Yang 1977 trilobite
Olenida - Asaphiscidae	Luyanhaoaspis decorosa Luyanhaoaspis decorosa trilobite
Artiopoda
Agnostida - Ammagnostidae	Proagnostus bulbus Proagnostus bulbus Butts 1926
Agnostida - Spinagnostidae	Hypagnostus brevifrons, Hypagnostus parvifrons Hypagnostus brevifrons Angelin 1851 Hypagnostus parvifrons Linnarsson 1869
Agnostida - Agnostidae	Acmarhachis typicalis, Hadragnostus modestus, Quadrahomagnostus tienshihfuensis Acmarhachis typicalis Resser 1938 Hadragnostus modestus Lochman 1944 Quadrahomagnostus tienshihfuensis Chu 1959
Agnostida -	Valenagnostus imitans Valenagnostus imitans Oepik 1961
Agnostida - Phalacromidae	Lisogoragnostus mictus Lisogoragnostus mictus Peng and Robison 2000
Agnostida - Diplagnostidae	Linguagnostus stenus Linguagnostus stenus Peng and Robison 2000
Agnostida - Clavagnostidae	Aspidagnostus laevis Aspidagnostus laevis Palmer 1962