Taas-Aryy Island (Ulakhan-Krest Formation 12 (10 m): Anisian, Russian Federation
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Ostreida
- Bakevelliidae
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Bakevallia (Maizuria) arctica
(Kiparisova 1937)
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Hoernesia torta
Popov 1964
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Cephalopoda
- Ceratitida
- Longobarditidae
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Intornites nevadanus
(Hyatt and Smith 1905)
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Cephalopoda
- Ceratitida
- Ceratitidae
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Gymnotoceras inflatum
Konstantinov 1991
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Gymnotoceras tasaryense
Konstantinov 1991
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Cephalopoda
- Ceratitida
- Parapopanoceratidae
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Parapopanoceras asseretoi
Dagys and Ermakova 1981
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Cephalopoda
- Nautilida
- Tainoceratidae
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Arctonautilus cf. egorovi
Sobolev 1989
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Cephalopoda
- Pseudorthocerida
- Trematoceratidae
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Trematoceras sp.
Eichwald 1851
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see common names |
Geography
Country: | Russian Federation |
Coordinates: | 71.8° North, 127.2° East (view map) |
Paleocoordinates: | 65.6° North, 13.5° East |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Triassic | Epoch: | Middle Triassic |
Stage: | Anisian | 10 m.y. bin: | Triassic 2 |
Key time interval: | Anisian | Ammonoid zone: | Boreohungarites kharaulakhensis |
Age range of interval: | 247.20000 - 242.00000 m.y. ago |
Stratigraphy
Formation: | Ulakhan-Krest | Member: | 12 |
Local section: | 12 | Local bed: | 10 m |
Local order: | bottom to top | ||
Stratigraphic resolution: | bed |
Lithology and environment
Primary lithology: | concretionary,gray,green lithified argillaceous siltstone |
Lithology description: Dark- and greenish-gray fine-grained (and inequi- granular, in the base) siltstones. The bed contains calcare- ous concretions, pyrite nodules, and interbeds and lenses of calcareous siltstones. | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | observed (not collected) |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 124551 | ||
Authorizer: | M. Aberhan | Enterer: | D. Wellmanns | Research group: | marine invertebrate |
Created: | 2012-02-18 21:14:50 | Last modified: | 2012-02-18 04:14:50 |
Access level: | authorizer only | Released: | 2017-02-18 21:14:50 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
39845. | A. G. Konstantinov, E. S. Sobolev, and A. V. Yadrenkin. 2007. Detailed biostratigraphy of Triassic deposits in the Lena lower reaches(northern Yakutia). Russian Geology and Geophysics 48:721-736 [M. Aberhan/D. Wellmanns] |