PBDB Collection

Paibi section, bed 12 (Cambrian of China)

Where: Hunan, China (28.4° N, 109.5° E: paleocoordinates 24.9° N, 152.5° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ptychagnostus punctuosus trilobite zone, Huaqiao Formation, Wangcunian (504.5 - 497.0 Ma)

• bed 12: 93-110 m, Dorypyge richthofeni polymerid trilobite zone

• bed-level stratigraphic resolution

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

• Jiangnan Slope Belt, lower slope environments

• upper part: dark-gray, thin- to medium-bedded, laminated, dolomitic limestone, intercalated with dark-gray, thin-bedded packstone bearing limestone concretions; lower part: dark-gray, thin-bedded packstone, interbedded with dark-gray, thin- to medium-bedded, argillaceous dolostone

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 49161: 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
Asaphida - Rhyssometopidae	Qiandongaspis sinensis Qiandongaspis sinensis trilobite
Asaphida - Anomocarellidae	Paranomocarella fortis Paranomocarella fortis Peng et al. 1995 trilobite
Corynexochida - Dorypygidae	Dorypyge richthofeni Dorypyge richthofeni Dames 1883 trilobite
Corynexochida - Tsinaniidae	Zhujia hunanensis Zhujia hunanensis Peng et al. 1995 trilobite
Corynexochida - Dolichometopidae	Amphoton cf. typicum, Amphoton alceste Amphoton cf. typicum Kobayashi 1942 trilobite Amphoton alceste Walcott 1905 trilobite
-	Prodamesella tumidula Prodamesella tumidula trilobite
Artiopoda
Agnostida - Diplagnostidae	Diplagnostus planicauda Diplagnostus planicauda Angelin 1851
Agnostida - Ptychagnostidae	Ptychagnostus cuyanus, Ptychagnostus atavus, Ptychagnostus punctuosus, "Ptychagnostus leptus" = Acidusus leptus, Pseudophalacroma dubium, Pseudophalacroma ovale Ptychagnostus cuyanus Rusconi 1948 Ptychagnostus atavus Tullberg 1880 Ptychagnostus punctuosus Angelin 1851 "Ptychagnostus leptus" = Acidusus leptus Qian 1983 Pseudophalacroma dubium Whitehouse 1936 Pseudophalacroma ovale Yang 1982
Agnostida - Clavagnostidae	Utagnostus songae Utagnostus songae Peng and Robison 2000
Agnostida - Spinagnostidae	Tomagnostella exsculpta, Hypagnostus parvifrons, Hypagnostus brevifrons Tomagnostella exsculpta Angelin 1851 Hypagnostus parvifrons Linnarsson 1869 Hypagnostus brevifrons Angelin 1851
Agnostida - Ammagnostidae	Ammagnostus laiwuensis Ammagnostus laiwuensis Lorenz 1906