Xiuzigou, bed 7 (Cambrian to of China)

Where: Henan, China (32.8° N, 111.5° E: paleocoordinates 21.7° N, 156.4° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Triplagnostus gibbus posterus-Doryagnostus incertus trilobite zone, Xijiadian Formation, Taijangian to Taijangian (513.0 - 501.0 Ma)

• 49.9 m thick, Triplagnostus gibbus posterus-Doryagnostus incertus zone of Yang 1993, probably equivalent to Ptychagnostus atavus-Goniagnostus nathorsti zones, Drumian

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified limestone and lithified, calcareous shale

• platform margin slope
• bluish-grey thin-bedded limestone (with scattered pyrite) intercalated with purplish-yellow thin-bedded calcareous shale

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: J. Yang, S. Yu, G. Liu, N. Su, M. He, J. Shang, H. Zhang, H. Zhu, Y. Li and G. Yan. 1993. Cambrian stratigraphy, lithofacies, paleogeography and trilobite faunas of East Qinling-Dabashan Mountains, China 1-246 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 127073: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.04.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida - Ptychopariidae
Ptychoparella minuta n. sp. Yang et al. 1993 trilobite
 Asaphida - Anomocarellidae
Anomocarella zushimiaoensis n. sp. Yang et al. 1993 trilobite
 Corynexochida - Dolichometopidae
Fuchouia (Parafuchouia) "sp. 1" Lu and Qian 1974 trilobite
Fuchouia (Parafuchouia) "sp. 2" Lu and Qian 1974 trilobite
Fuchouia (Parafuchouia) quadratoglabella n. sp. Yang et al. 1993 trilobite
 Corynexochida - Zacanthoididae
Danjiangella tenuispinosa n. gen. n. sp. Yang et al. 1993 trilobite
 Corynexochida - Dorypygidae
Kootenia (Tienzhuia) sp. Walcott 1899 trilobite
Dorypyge qinlingensis n. sp. Yang et al. 1993 trilobite
 Redlichiida - Agraulidae
Agraulos transversus n. sp. Yang et al. 1993 trilobite
  - Mapaniidae
Mapania sp. Resser and Endo 1935 trilobite
Artiopoda
 Agnostida - Ptychagnostidae
Triplagnostus gibbus Linnarsson 1869
subsp. posterus
Ptychagnostus sp. Jaekel 1909
Goniagnostus sp. Howell 1935
 Agnostida - Spinagnostidae
Doryagnostus incertus Brögger 1878