Aksay, bed 4c (Cambrian of Kazakhstan)

Where: Kazakhstan (43.4° N, 70.2° E: paleocoordinates 5.3° N, 102.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Uchbas Member (Chulaktau Formation), Tommotian (525.5 - 521.0 Ma)

• bed 4 (35-40 m thick), Bercutia cristata zone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified phosphorite and lithified dolomite

• phosphorite, sandy dolomite, conglomerates

Size class: macrofossils

Primary reference: V. V. Missarzhevsky and A. M. Mambetov. 1981. Stratigrafiya i fauna pogranichnykh sloyev Kembriya i Dokembriya Malogo Karatau [Stratigraphy and fauna of the Precambrian-Cambrian boundary beds of the Malyy Karatau]. Trudy Ordena Trudovogo Krasnogo Znameni Geologicheskiy Institut Akademiya NAUK SSSR 326:1-96 [W. Kiessling/U. Merkel/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99322: authorized by Wolfgang Kiessling, entered by Uta Merkel on 08.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Orthothecimorpha
 Circothecida -
Uniformitheca aladzharica Missarzhevsky and Mambetov 1981
Uniformitheca ovaliformis Missarzhevsky and Mambetov 1981
Hyolitha
 Orthothecida - Circothecidae
Conotheca mammilata Rozanov et al. 1969
Protoconodonta
  -
Protohertzina siciformis Missarzhevsky 1973
 Hyolithelminthida - Torellellidae
Torellella biconvexa Rozanov et al. 1969
 Hyolithelminthida - Hyolithellidae
Pseudorthotheca costata Missarzhevsky and Mambetov 1981