Kyrshabakty River, 1378-17 (Cambrian of Kazakhstan)

Where: Kazakhstan (43.5° N, 70.0° E: paleocoordinates 6.4° S, 94.7° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pseudagnostus pseudangustilobus-Acrocephalaspina trilobite zone, Bestogai Formation, Aksaian (492.8 - 491.5 Ma)

• sample 1378-17 from unit X (350-415 m) of the Kyrshabakty River section

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified lime mudstone and lithified wackestone

• mid fan distributary channels; slope of an isolated carbonate platform known as the Aisha-Bibi sea-mount
• wavy-bedded (bioturbated) grey and dark grey lime mudstone and wackestone (detrital limestone)

Size class: mesofossils

Preservation: cast

Primary reference: G. K. Ergaliev and F. G. Ergaliev. 2008. Agnostidy srednego i verkhnego Kembriya Aksayskogo Gosudarstvennogo Geologicheskogo Zakaznika v yushnom Kazakhstane (Kyrshabakty, Malyy Karatau) [Middle and Upper Cambrian Agnostida from the Aksai National Geological Reserve in southern Kazakhstan (Kyrshabakty River, Malyy Karatau Range)] 1-359 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118393: authorized by Wolfgang Kiessling, entered by Uta Merkel on 13.10.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Diplagnostidae
 Agnostida - Agnostidae
"Micragnostus intermedius" = Micragnostus pehuenchensis
"Micragnostus intermedius" = Micragnostus pehuenchensis Rusconi 1953
Trilobita
 Olenida - Eulomidae
Acrocephalaspina insueta Ergaliev 1980 trilobite
 Corynexochida - Kaolishaniidae
 Asaphida - Ceratopygidae
"Proceratopyge (Lopnorites) rectispinatus" = Proceratopyge rectispinata Troedsson 1937 trilobite
Proceratopyge (Lopnorites) grabaui Troedsson 1937 trilobite