Kyrshabakty River, 1346 (Cambrian of Kazakhstan)

Where: Kazakhstan (43.5° N, 70.0° E: paleocoordinates 3.2° S, 98.9° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lejopyge laevigata trilobite zone, Zhumabai Formation, Ayusokkanian (499.5 - 497.0 Ma)

• sample 1346 from unit VI (91.5-132 m) of the Kyrshabakty River section

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified lime mudstone

• outer fan fringe; slope of an isolated carbonate platform known as the Aisha-Bibi sea-mount
• thin-bedded dark gray carbonate mudstone with thin parallel laminated clayish limestone

Size class: mesofossils

Preservation: cast

Primary reference: S. N. Koneva. 1990. New Middle Cambrian Acrotretids (Brachiopods) from the Lesser Karatau Range. Paleontological Journal 24(3):45-55 [M. Patzkowsky/P. Borkow/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9950: authorized by Mark Patzkowsky, entered by Phil Borkow on 02.02.2001, edited by Uta Merkel and Marcus Domansky

Creative Commons license: CC BY (attribution)

Taxonomic list

Lingulata
 Acrotretida - Acrotretidae
Artiopoda
 Agnostida - Ptychagnostidae
Goniagnostus spiniger1 Westergard 1931
Lejopyge armata1 Linnarsson 1869
"Lejopyge laevigata" = Lejopyge laevigatus1 Dalman 1828
"Lejopyge calva" = Lejopyge laevigatus1 Dalman 1828
Pseudophalacroma dubium1 Whitehouse 1936
"Ptychagnostus aculeatus" = Acidusus aculeatus1 Angelin 1851
Myrmecomimus solitarius1 Ergaliev and Ergaliev 2008
 Agnostida - Clavagnostidae
Clavagnostus calensis1 Rusconi 1950
 Agnostida - Spinagnostidae
Tomagnostella sulcifera1 Wallerius 1895
Hypagnostus brevifrons1 Angelin 1851
Hypagnostus parvifrons1 Linnarsson 1869
 Agnostida - Peronopsidae
"Svenax pusillus" = Peronopsis (Svenax) pusillus1
"Svenax pusillus" = Peronopsis (Svenax) pusillus1 Tullberg 1880