Chopko River, bed Ch-24a-3 (Cambrian of Russian Federation)

Where: Krasnoyar, Russian Federation (68.9° N, 88.7° E)

• Paleocoordinates: 6.3° S, 35.4° W (Wright 2013)

• coordinate estimated from map

• small collection-level geographic resolution

When: Irvingella norilica trilobite zone, 6 Member (Chopko Formation), Taoyuanian (495.2 - 486.9 Ma)

• Cambrian stage 9

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified limestone and lithified marl

• detrital limestones (wackestones and packstones), calcareous limestones, argillaceous limestones, marls

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: A. I. Varlamov, K. L. Pak, and A. V. Rosova. 2006. The Upper Cambrian of the Chopko River section, Norilsk region, northwestern Siberian Platform: stratigraphy and trilobites. Paleontological Journal 40(Suppl. 1):S1–S56 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 132590: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.08.2012

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Tchopkina tchopkinica, Tchopkinella spinosa, Convexocephalus granularis
Artiopoda
 Agnostida - Pseudagnostidae
Norilagnostus quadratus
Norilagnostus quadratus Lazarenko 1966
 Agnostida - Diplagnostidae
Pseudagnostus intermedius, Pseudagnostus cryptus
Trilobita
 Ptychopariida - Elviniidae
Irvingella norilica
Irvingella norilica Lazarenko 1968 trilobite
 Asaphida - Anomocaridae
Schoriecare sp.
Schoriecare sp. Rozova 1964 trilobite
  - Llanoaspididae
Tagenarella eniseica
Tagenarella eniseica Lazarenko 1968 trilobite
 Lichida - Lichakephalidae
Bestjubella sp.
Bestjubella sp. Ivshin 1955 trilobite
 Olenida - Pterocephaliidae
Pterocephaliidae indet.
Pterocephaliidae indet. Kobayashi 1935 trilobite
 Corynexochida - Cheilocephalidae
Parakoldinia sp.
Parakoldinia sp. Rozova 1960 trilobite