Middle Siyak Beds of Siyak River Section: Lochkovian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Nymphorhynchus nympha
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula pelagica
Gypidula optata
Ivdelinia procerula
Ivdelinia petropavlowskiensis
Rhynchonellata - Pentamerida - Clorindidae
Clorinda pseudolinguifera
Clorindina vijaica
Rhynchonellata - Rhynchonellida - Camarotoechiidae
Camarotoechia bieniaszi
genus name in quotes
Linguopugnoides paulus
Rhynchonellata - Rhynchonellida - Uncinulidae
Uncinulus gurjevskensis
Rhynchonellata - Rhynchonellida - Glossinotoechiidae
Glossinulus (Glossinotoechia) gracianovae
Rhynchonellata - Rhynchonellida - Innaechiidae
Decoropugnax berenice
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Hebetoechia vagranica
Rhynchonellata - Rhynchonellida - Yunnanellidae
? Yunnanellina tabuskaensis
synonym of Yunnanella
Rhynchonellata - Atrypida - Septatrypidae
Atrypopsis thetis
synonym of Septatrypa
Rhynchonellata - Atrypida - Punctatrypidae
Atrypinella losvensis
Rhynchonellata - Atrypida - Atrypinidae
Spirigerina supramarginalis (Khalfin 1948)
Rhynchonellata - Atrypida - Karpinskiidae
Karpinskia vagranensis
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia biloba (Linnaeus 1758)
Rhynchonellata - Athyridida - Athyrididae
Protathyris praecursor
Protathyris celsus
Protathyris insuetus
Rhynchonellata - Athyridida - Rhynchospirinidae
? Rhynchospirina sijakensis
Anthozoa - Stauriida - Mucophyllidae
Pseudamplexus quadripartitus
Anthozoa - Stauriida - Spongophyllidae
Spongophyllum halysitoides
Anthozoa - Cystiphyllida - Tryplasmatidae
Tryplasma hercynica
Anthozoa - Favositida - Favositidae
Favosites admirabilis
Favosites pseudoregularissimus
Favosites intricatus Pocta 1902
see common names

Geography
Country:Russian Federation State/province:Bashkir
Coordinates: 53.1° North, 57.4° East (view map)
Paleocoordinates:0.5° North, 16.3° East
Basis of coordinate:based on nearby landmark
Time
Period:Devonian Epoch:Early/Lower Devonian
Stage:Lochkovian 10 m.y. bin:Devonian 1
*Epoch:Helderberg
Key time interval:Lochkovian
Age range of interval:419.20000 - 410.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Middle Siyak Beds
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:shelly/skeletal,gray "limestone"
Includes fossils?Y
Lithology description: "...lower part comprises grey, thick-stratified, microcrystalline limestones similar to lsts in Lower Siyak and grades upward to light grey, massive, locally organogenous limestones..."
Environment:marine indet.
Taphonomy
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:"More than 70 species of brachiopods and corals are found. The most characteristic are listed..."
Metadata
Database number:13942
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-05-03 13:59:00 Last modified:2006-09-15 15:13:14
Access level:the public Released:2002-05-03 13:59:00
Creative Commons license:CC BY
Reference information

Primary reference:

6172. A. P. Tyazheva and R. A. Zhavoronkova. 1977. Southern Urals. in A. Martinsson, ed. The Silurian-Devonian boundary (IUGS, Series A, Number 5). Schweizerbart'sche, Stuttgart. 203-210 [M. Foote/M. Foote/M. Foote]