Bystraya Formation, Transbaikalia Province, Russia - Ushatinskaya 1988: Botomian - Lenian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Archaeocyatha
Archaeocyatha indet. Vologdin 1937
unclassified
Ostracoda
Trilobita
Trilobita indet. Walch 1771
Obolellata - Obolellida - Obolellidae
Bivalvia
Gastropoda
unclassified
Eocrinoidea
Eocrinoidea indet. Jaekel 1918
see common names

Geography
Country:Russian Federation State/province:Transbaikalia
Coordinates: 54.0° North, 112.0° East (view map)
Paleocoordinates:9.0° North, 52.4° West (Wright 2013)
Geographic resolution:outcrop
Time
Period: Cambrian Epoch: Series 2
10 m.y. bin: Cambrian 2-3
*Period:Early/Lower Cambrian - Middle Cambrian *Epoch:Caerfai
*International age/stage:Early/Lower Lenian - Middle Lenian *Local age/stage:Botomian
Key time interval: Botomian - Lenian
Age range of interval: 516 - 508.2 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Bystraya
Stratigraphic resolution:formation
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: lithified "carbonate"
Secondary lithology: lithified sandstone
Includes fossils?Y
Lithology description: Interbedded units of dolomite and limestones, including thin beds and lenses of calcareous sandstone, clayes and sandy limestone, siltstones, and siliceous cherty shales.
Environment:deep subtidal indet.
Taphonomy
Modes of preservation:cast,original calcite
Collection methods and comments
Collection excludes:some genera,some macrofossils
Collection methods:chemical,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: The specimens are deposited at the Paleontological Institue of the USSR Academy of Sciences in Moscow.
Taxonomic list comments:The listed brachiopods are restricted to the carbonate-terrigenous rocks such as the calcareous sandstones and siltstones.
Metadata
Database number:10007
Authorizer:M. Patzkowsky Enterer:P. Borkow
Modifier:A. Krug Research group:marine invertebrate
Created:2001-02-07 12:28:13 Last modified:2025-02-22 15:12:02
Access level:the public Released:2001-02-07 12:28:13
Creative Commons license:CC0
Reference information

Primary reference:
880. 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]