USGS 21795-PC, Yukon River-Nation River Confluence: Roadian, Alaska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Rugosochonetidae
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Tornquistia sp.
Paeckelmann 1930
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= Svalbardia sp.
Barkhatova 1970
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Clapham 2015 | |||||||||
| replaced by Brachiosvalbardia | ||||||||||
| Implied by ID of other specimens as "Tornquistia" toulai | ||||||||||
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Strophomenata
- Productida
- Linoproductidae
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Megousia sp.
Muir-Wood and Cooper 1960
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Cancrinella sp.
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Strophomenata
- Productida
- Productidae
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Horridonia sp.
Chao 1927
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Yakovlevia mammata
(Keyserling 1846)
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Rhynchonellata
- Rhynchonellida
- Rhynchoporidae
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Rhynchopora sp.
King 1865
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Rhynchonellata
- Athyridida
- Athyrididae
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Cleiothyridina sp.
Buckman 1906
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Lingulata
- Lingulida
- Lingulidae
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Lingula sp.
Bruguiére 1797
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= Lingulidae indet.
Gray 1840
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Clapham 2015 | |||||||||
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Lingulata
- Lingulida
- Discinidae
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Orbiculoidea sp.
d'Orbigny 1847
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 65.2° North, 141.7° West (view map) | ||
| Paleocoordinates: | 43.0° North, 26.5° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Roadian | 10 m.y. bin: | Permian 3 |
| Key time interval: | Roadian | ||
| Age range of interval: | 273.01000 - 266.90000 m.y. ago |
Stratigraphy
| Formation: | Takhandit | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Sandstone Unit. About 17 feet above base of unit. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 102556 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2011-01-17 11:40:02 | Last modified: | 2013-11-25 13:02:06 |
| Access level: | the public | Released: | 2011-01-17 11:40:02 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 33448. | E. E. Brabb and R. E. Grant. 1971. Stratigraphy and paleontology of the revised type section for the Takhandit Limestone (Permian) in east-central Alaska. United States Geological Survey Professional Paper 703:1-25 [M. Clapham/M. Clapham] |
Secondary references:
| 27487 | M. E. Clapham. 2015. Personal Opinions. [M. Clapham/M. Clapham/M. Clapham] |