Khos-Nelege, bed 33 (Cambrian of Russian Federation)

Where: Sakha, Russian Federation (71.3° N, 127.6° E: paleocoordinates 11.8° S, 4.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Agnostotes orientalis trilobite zone, Ogon'or Formation, Taoyuanian (498.5 - 485.4 Ma)

• bed 33, ~215-230 m from the base of the section, Cambrian stage 9 (Jiangshanian)

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified wackestone and lithified siltstone

• distal slope environment (outer fan to basin transition)
• dark gray wavy limy flagstone (mud-wackestone) with greenish siltstone and black argillaceous laminaes

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 133592: authorized by Wolfgang Kiessling, entered by Uta Merkel on 17.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Agnostidae
"Agnostus (Homagnostus) captiosus" = Homagnostus captiosus Lazarenko 1966
 Agnostida - Diplagnostidae
"Rhaptagnostus impressus" = Pseudagnostus, "Pseudagnostus josepha" = Pseudagnostus josephus, Agnostotes orientalis
"Rhaptagnostus impressus" = Pseudagnostus
"Pseudagnostus josepha" = Pseudagnostus josephus Hall 1863
Agnostotes orientalis Kobayashi 1935
Trilobita
  - Llanoaspididae
Tagenarella aff. eniseica Lazarenko 1968 trilobite
 Ptychopariida - Acrocephalitidae
Acrocephalites militans Lermontova 1940 trilobite
 Ptychopariida - Catillicephalidae
Onchonotellus abnormis Ivshin 1956 trilobite
 Ptychopariida - Conokephalinidae
 Ptychopariida - Elviniidae
Irvingella major Ulrich and Resser 1924 trilobite
 Olenida - Olenidae
"Parabolina ex gr. spinulosa" = Parabolina (Parabolina) spinulosa, Parabolinina edita
"Parabolina ex gr. spinulosa" = Parabolina (Parabolina) spinulosa Wahlenberg 1821 trilobite