Omulev Mnt. area,Tirekhtyakh Fm, Mirny Creek section, Unit Q-68, Sample SIB79-41: Hirnantian, Russian Federation
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Amorphognathus ordovicius
Branson and Mehl 1933
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Pterobranchia
- Graptoloidea
- Normalograptidae
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Normalograptus aff. medius
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Koren and Sobolevskaya 2008 | |||||||||
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Pterobranchia
- Graptoloidea
- Neodiplograptidae
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Normalograptus extraordinarius
(Sobolevskaya 1974)
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Koren and Sobolevskaya 2008 | |||||||||
| recombined as Metabolograptus extraordinarius | ||||||||||
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Strophomenata
- Strophomenida
- Leptostrophiidae
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Eostropheodonta hirnantensis
(M'Coy 1851)
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Koren and Sobolevskaya 2008 | |||||||||
| Eostropheodonta hirnantensis lucavica | ||||||||||
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Rhynchonellata
- Atrypida
- Atrypinidae
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Eospirigerina putilla
(Hall and Clarke 1894)
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Koren and Sobolevskaya 2008 | |||||||||
| recombined as Atrypa putilla | ||||||||||
| Eospirigerina putilla prisca | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Thebesia admiranda
Oradovskaya 1988
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Koren and Sobolevskaya 2008 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Russian Federation |
| Coordinates: | 64.0° North, 147.2° East (view map) |
| Paleocoordinates: | 15.1° North, 9.9° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Hirnantian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Hirnantian | Graptolite zone: | Normalograptus extraordinarius |
| Age range of interval: | 445.20000 - 443.80000 m.y. ago |
Stratigraphy
| Formation: | Tirekhtyakh | ||||
| Local section: | Mirny Creek | Local bed: | Hirnantia | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Late Ashgillian | |||||
Lithology and environment
| Primary lithology: | "limestone" |
| Secondary lithology: | calcareous "shale" |
| Lithology description: bioclastic limestone, with large algal and coral bioherms and thin interbeds of silty carbonaceou shale. The formation includes distinctive brachiopods | |
| Environment: | reef, buildup or bioherm |
| Geology comments: The Tirekhtyakh Formation is from 255 to 320 m thick locally | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Reef 996 | ||
| Database number: | 142466 | ||
| Authorizer: | W. Kiessling, P. Wagner | Enterer: | M. Krause, P. Wagner |
| Modifier: | M. Krause | Research group: | marine invertebrate |
| Created: | 2013-04-12 00:02:03 | Last modified: | 2015-08-27 04:15:16 |
| Access level: | authorizer only | Released: | 2013-07-12 00:02:03 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 46244. | S. Zhang and C. R. Barnes. 2007. Late Ordovician to Early Silurian Conodont faunas from the Kolyma Terrane, Omulev Mountains, Northeast Russia, and their paleobiogeographic affinity. Journal of Paleontology 81(3):490-512 [W. Kiessling/M. Krause/M. Krause] |
Secondary references:
| 49297 | T. N. Koren and R. F. Sobolevskaya. 2008. The regional stratotype section and point for the base of the Hirnantian Stage (the uppermost Ordovician) at Mirny Creek, Omulev Mountains, Northeast Russia. Estonian Journal of Earth Sciences 57(1):1-10 [P. Wagner/P. Wagner] |