Baisal, Bed 10: Wordian, Azerbaijan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Waagenophyllidae
Ipciphyllum flexuosa
Ipciphyllum armenicum
Ipciphyllum grandicolumnarium n. sp. Kropatcheva 1989
Wentzellophyllum (Armeniaphyllum) densicolumnatum n. sp.
Wentzellophyllum (Armeniaphyllum) baissalense n. sp. Kropatcheva 1989
Wentzellophyllum (Armeniaphyllum) elegans n. sp. Kropatcheva 1989
Strophomenata - Strophomenida - Rugosochonetidae
Neochonetes armenicus Sokolskaja 1965
Strophomenata - Productida - Lyttoniidae
Leptodus nobilis (Waagen 1883)
Strophomenata - Productida - Productellidae
Ogbinia dzhagrensis Sarycheva 1965
Ammodiscidae
Glomospira sp. Rzehak 1895
Tubothalamea - Miliolida - Cornuspiridae
Cornuspira baissalensis
Tubothalamea - Miliolida - Hemigordiopsidae
Multidiscus sp.
Nodosariata - Nodosariida - Nodosariidae
Nodosaria ustritskii
Nodosaria ex gr. ochotica
Nodosaria ex gr. farcimeniformis
Partisaniidae
Partisania sp.
unclassified
Pseudolangella geranossensis
Pseudolangella dzhagadzurensis
Biseriamminidae
Globivalvulina graeca
Globivalvulina informal sp. 1
Globivalvulina informal sp. 3
Globivalvulina informal sp. 4
Dagmarita chanakchiensis Reitlinger 1965
Paraglobivalvulina mira
Palaeotextulariidae
Climacammina aff. rara
Climacammina informal sp. 2
Schwagerinidae
Chusenella caucasica
Chusenella quasidouvillei
Chusenella tumefacta
Pachyphloiidae
Pachyphloia aff. gracilis
Pachyphloia stricta
Pachyphloia aff. ovata Lange 1925
Geinitzinidae
Geinitzina aff. reperta
Archaesphaeridae
Diplosphaerina inaequalis
Abadehellidae
Abadehella sp. Okimura and Ishii 1975
Endothyridae
Neoendothyra eostaffelloidea
Neoendothyra dzuongi
Neoendothyra parva
Neoendothyra spp.
Bradyinidae
Bradyina novizkiana
Bradyina micula
Earlandiidae
Earlandia aff. gracilis
Tuberitinidae
Eotuberitina reitlingerae
see common names

Geography
Country:Azerbaijan
Coordinates: 39.6° North, 45.1° East (view map)
Paleocoordinates:8.5° South, 41.3° East
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:Arpa
Stratigraphic resolution:group of beds
Stratigraphy comments: Basal unit of the Midian stage of the Tethyan timescale. Kotlyar et al. (1989) identified two fusulinid zones, the lower Yangchienia thompsoni and the upper Chusenella abichi. In central Iran, Chusenella abichi occurs with Neoschwagerina margaritae (Leven, 1998), suggesting a Wordian age for the entire Arpa Formation.
Lithology and environment
Primary lithology:gray lithified cherty/siliceous "limestone"
Lithology description: Light and dark gray limestone, silicified in places with rare chert layers.
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,microfossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:94935
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:B. Allen Research group:marine invertebrate,micropaleontology
Created:2010-04-01 15:21:29 Last modified:2020-05-18 09:23:00
Access level:the public Released:2010-04-01 15:21:29
Creative Commons license:CC BY
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]