Baisal, Bed 28: Capitanian, Azerbaijan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tubothalamea - Miliolida - Cornuspiridae
unclassified
Ammodiscidae
Biseriamminidae
Ozawainellidae
Reichelina sp. Erk 1941
Staffellidae
Schwagerinidae
Chusenella sp. Hsu 1942
Rhynchonellata - Athyridida - Athyrididae
see common names

Geography
Country:Azerbaijan
Coordinates: 39.6° North, 45.1° East (view map)
Paleocoordinates:1.2° South, 53.9° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Permian Epoch: Guadalupian
Stage: Capitanian 10 m.y. bin: Permian 4
Key time interval: Capitanian
Age range of interval: 264.28 - 259.51 m.y. ago
Stratigraphy
Formation:Khachik
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified cherty/siliceous,carbonaceous "limestone"
Secondary lithology: lithified sandy,calcareous mudstone
Lithology description: Interbedded medium-bedded limestone, frequently carbonaceous, with sandy argillites, often calcareous. Limestone beds 0.1-0.3 m thick contain layers of chert.
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:94945
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2010-04-01 17:24:59 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-04-01 17:24:59
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]