Bystraya Formation, Transbaikalia Province, Russia - Ushatinskaya 1988 (Cambrian to of Russian Federation)

Where: Transbaikalia, Russian Federation (54.0° N, 112.0° E: paleocoordinates 3.6° S, 4.1° W)

• outcrop-level geographic resolution

When: Bystraya Formation, Botomian to Botomian (516.0 - 513.0 Ma)

• Formation is 1200m thick. A 30cm thick bed in the upper half of the exposed section contains four levels of shell pavement made of Magnicanalis georgievkensis.

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified carbonate and lithified sandstone

• Interbedded units of dolomite and limestones, including thin beds and lenses of calcareous sandstone, clayes and sandy limestone, siltstones, and siliceous cherty shales.

Preservation: cast, original calcite

Collection methods: chemical, mechanical,

• The specimens are deposited at the Paleontological Institue of the USSR Academy of Sciences in Moscow.

Primary reference: G. T. Ushatinskaya. 1988. Obolellids (Brachiopods) with hinged articulations of valves from the Lower Cambrian of Transbaikalia. Paleontological Journal 22(1):32-38 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10007: authorized by Mark Patzkowsky, entered by Phil Borkow on 07.02.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• The listed brachiopods are restricted to the carbonate-terrigenous rocks such as the calcareous sandstones and siltstones.
Trilobita indet. Walch 1771 trilobite
Ostracoda indet. Latreille 1802 ostracod
 Obolellida - Obolellidae
Bivalvia indet. Linnaeus 1758 clam
Gastropoda indet. Cuvier 1797 snail
Eocrinoidea indet. Jaekel 1918