Khos-Nelege, bed 36 (Cambrian of Russian Federation)

Where: Sakha, Russian Federation (71.3° N, 127.6° E)

• Paleocoordinates: 2.2° N, 45.6° W (Wright 2013)

• coordinate estimated from map

• small collection-level geographic resolution

When: Maladioidella abdita trilobite zone, Ogon'or Formation, Taoyuanian (495.2 - 486.9 Ma)

• bed 36, ~241-254 m from the base of the section, Cambrian stage 9 (Jiangshanian)

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified wackestone

• distal slope environment (outer fan to basin transition)
• gray-greenish argillaceous-dolomitic wackestone with gray silty lens-nodular limestone

Size class: macrofossils

Preservation: cast

Primary reference: N. P. Lazarenko, I. Y. Gogin, T. V. Pegel and G. P. Abaimova. 2011. The Khos-Nelege section of the Ogon'or Formation: a potential candidate for the GSSP of stage 10, Cambrian System. Bulletin of Geosciences 86(3):555-568 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 133600: authorized by Wolfgang Kiessling, entered by Uta Merkel on 18.09.2012

Creative Commons license: CC0 (CC0)

Taxonomic list

Artiopoda
 Agnostida - Phalacromidae
Lisogoragnostus sp. Rozova 1988 artiopod
 Agnostida - Agnostidae
Eurudagnostus cf. minor Ergaliev 1980 artiopod
Acmarhachis typicalis Resser 1938 artiopod
 Agnostida - Diplagnostidae
"Rhaptagnostus impressus" = Pseudagnostus
"Rhaptagnostus impressus" = Pseudagnostus artiopod
  - Changshaniidae
Kazelia sp. Walcott and Resser 1928 trilobite
 Ptychopariida - Acrocephalitidae
Acrocephalites militans Lermontova 1940 trilobite
 Ptychopariida - Plethopeltidae
Koldinia sp. Walcott and Resser 1928 trilobite
 Asaphida - Ceratopygidae
"Proceratopyge fragilis" = Proceratopyge rectispinata
"Proceratopyge fragilis" = Proceratopyge rectispinata Troedsson 1937 trilobite
 Olenida - Aphelaspidae
Amorphella modesta Rozova 1963 trilobite
 Olenida - Olenidae
 Olenida - Idahoiidae
 Lichida - Lichakephalidae
Eoacidaspis sp. Poletaeva 1956 trilobite