Lower Siyak Beds of Siyak River Section: Lochkovian, Russian Federation
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Favositida
- Cleistoporidae
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Riphaeolites ramosus
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Riphaeolites cf. ramosus
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Riphaeolites virgosus
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Anthozoa
- Favositida
- Favositidae
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Favosites lucidus
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Favosites delectus
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Favosites intricatus
Pocta 1902
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Anthozoa
- Favositida
- Parastriatoporidae
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Parastriatopora fallacis
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Anthozoa
- Favositida
- Pachyporidae
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Cladopora actuosa
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Anthozoa
- Stauriida
- Pycnostylidae
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? Zelophyllum sp.
Wedekind 1927
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Zelophyllum sp.
Wedekind 1927
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Anthozoa
- Stauriida
- Ptenophyllidae
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Acanthophyllum ex gr. pseudohelianthoides
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Neomphyma originata
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Neomphyma rosiformis
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Anthozoa
- Stauriida
- Mucophyllidae
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Pseudamplexus fascicularis
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Anthozoa
- Cystiphyllida
- Cystiphyllidae
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Pseudomicroplasma sp.
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceratidae indet.
M'Coy 1844
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Strophomenata
- Strophomenida
- Douvillinidae
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Cymostrophia sp.
Caster 1939
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Rhynchonellata
- Pentamerida
- Gypidulidae
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Gypidula pelagica
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Gypidula optata
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Gypidula similis
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Ivdelinia antiqua
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Ivdelinia aff. petropavlowskiensis
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Rhynchonellata
- Pentamerida
- Clorindidae
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Clorinda pseudolinguifera
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Rhynchonellata
- Athyridida
- Meristidae
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Merista stricta
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Rhynchonellata
- Athyridida
- Athyrididae
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Protathyris celsus
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Rhynchonellata
- Atrypida
- Atrypidae
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Spinatrypina bella
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Rhynchonellata
- Atrypida
- Atrypinidae
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Spirigerina supramarginalis
(Khalfin 1948)
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Rhynchonellata
- Atrypida
- Septatrypidae
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? Hircinisca posthircina
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| spelled with current rank as Septatrypa (Hircinisca) | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
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Astutorhyncha ardua
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Astutorhyncha deplanata
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Camarotoechia bieniaszi
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| genus name in quotes | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Hebetoechiidae
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Lanceomyonia borealiformis
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Hebetoechia vagranica
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| 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: | Lower Siyak Beds |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | shelly/skeletal,gray "limestone" |
| Secondary lithology: | gray argillaceous "shale" |
| Includes fossils? | Y |
| Lithology description: "(1) Grey, stratified, pelitomorphic, microcrystalline, crinoidal limestones...(2) Float of dark grey clay shale [with] small outcrops of grey limestones...(3) grey, bedded, finely crystalline and pelitic limestones... (4) grey, thick-bedded, cryptocrystalline limestones..." | |
| Environment: | marine indet. |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 13941 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2002-05-03 13:45:04 | Last modified: | 2006-09-15 15:13:14 |
| Access level: | the public | Released: | 2002-05-03 13:45:04 |
| 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] |