Baisal, Bed 4: Wordian, Azerbaijan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ammodiscidae
Rhynchonellata - Orthida - Schizophoriidae
Strophomenata - Productida - Linoproductidae
Strophomenata - Productida
Strophomenata - Productida - Productellidae
Strophomenata - Productida - Aulostegidae
Strophomenata - Productida - Lyttoniidae
see common names

Geography
Country:Azerbaijan
Coordinates: 39.6° North, 45.1° East (view map)
Paleocoordinates:5.0° South, 52.5° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Permian Epoch: Guadalupian
Stage: Wordian 10 m.y. bin: Permian 4
Key time interval: Wordian
Age range of interval: 266.9 - 264.28 m.y. ago
Stratigraphy
Formation:Gnishik
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:black,gray lithified argillaceous "limestone"
Lithology description: Dark gray to black, finely crystalline friable argillaceous limestone
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:94931
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2010-04-01 14:56:20 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-04-01 14:56:20
Creative Commons license:CC0
Reference information

Primary reference:
31759. G. V. Kotlyar, Y.u. D. Zakharov, G. S. Kropatcheva, G. P. Pronina, I. O. Chedija and V. I. Burago. 1989. Evolution of the latest Permian biota: Midian regional stage in the USSR 1-184 [M. Clapham/M. Clapham]