Lazurnaya Bay Fm (upper part) - South Primorye: Olenekian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Nautilida - Grypoceratidae
Gyronautilus praevolutum (Kiparisova 1961)
recombined as Gyronautilus praevolutus
Cephalopoda - Ceratitida - Hedenstroemiidae
Hedenstroemia sp. Waagen 1895
Cephalopoda - Ceratitida - Prionitidae
Meekoceras subcristatum
Meekoceras boreale Diener 1895
Rhynchonellata - Rhynchonellida - Rhynchonellidae
Abrekia sulcata Dagys 1974
Lingulata - Lingulida - Lingulidae
Lingula borealis Bittner 1899
recombined as Lingularia borealis
see common names

Geography
Country:Russian Federation
Coordinates: 42.9° North, 132.3° East (view map)
Paleocoordinates:43.6° North, 110.4° East
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Triassic Epoch:Early/Lower Triassic
Stage:Olenekian 10 m.y. bin:Triassic 1
Key time interval:Olenekian
Age range of interval:251.20000 - 247.20000 m.y. ago
Stratigraphy
Formation:Lazurnaya Bay
Regional section:Abrek Bay
Stratigraphic resolution:formation
Stratigraphy comments: STRATIGRAPHIC RELATIONS: Lower Triassic strata in region are lithostratigraphically divided into the Lazurnaya Bay and Zhitkov Formations in an upward sequence. The Lazurnaya Bay Fm unconformably overlies the Permian Abrek Fm. THICKNESS: The Lazurnaya Bay Fm is 57.9 m thick in the Abrek Bay region. AGE: Contains an assemblage that suggest the lower Olenekian (lower part of the Hedenstroemia bisphorensis Zone) in the upper part of the formation, overlying upper Induan age sediments. The Induan/Olenekian boundary is located at 55 m above the base of the formation.
Lithology and environment
Primary lithology:fine,shelly/skeletal,gray lithified calcareous sandstone
Includes fossils?Y
Lithology description: GENERAL LITHOLOGY: Gray, fine-grained, bedded sandstone, with lenses of coquinoid calcareous sandstone. LITHIFICATION: Lithified, based on observation of figured specimens.
Environment:coastal indet.
Geology comments: ENVIRONMENT: No environmental data reported. Assigned to Siliciclastic coastal indet. on the basis of facies. TECTONIC SETTING: No tectonic data reported in text. SEQUENCE STRATIGRAPHY: No sequence stratigraphic data reported in text.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:poor
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Collection is a composite based on several workers, none of which are named. REPOSITORY: NSM (National Science Museum, Tokyo); CGM ?
Taxonomic list comments:COMPLETENESS: Not exhaustive (as compiled from previous workers first hand accounts), but fairly complete. NOMENCLATURE: Authoritative text, modern nomenclature. Presumably nomenclature of taxa listed from older collections has been revised.
Metadata
Database number:61959
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-07-08 19:45:56 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-07-08 19:45:56
Creative Commons license:CC BY
Reference information

Primary reference:
17926. Y.D. Zakharov and Y. Shigeta. 2000. Gyronautilus, a new genus of Triassic Nautilida from South Primorye, Russia. Paleontological Research 4(4):231-234 [A. Miller/A. Hendy]