USGS M970, Congress Canyon, North Humboldt Range: Bithynian, Nevada
collected by N.J. Silberling
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ceratitida
- Longobarditidae
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Czekanowskites hayesi
(McLearn 1948)
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1 specimen | ||||||
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Cephalopoda
- Ceratitida
- Khvalynitidae
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Ismidites cf. marmarensis
Arthaber 1915
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1 specimen | ||||||
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Cephalopoda
- Ceratitida
- Gymnitidae
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Gymnites perplanus
(Meek 1877)
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1 specimen | ||||||
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Cephalopoda
- Ceratitida
- Acrochordiceratidae
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Acrochordiceras hyatti
Meek 1877
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3 specimens | ||||||
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Bivalvia
- Ostreida
- Halobiidae
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Daonella cf. lommeli
(Wissmann 1841)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada |
| Coordinates: | 40.5° North, 118.2° West (view map) | ||
| Paleocoordinates: | 11.1° North, 41.8° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Middle Triassic |
| Stage: | Anisian | 10 m.y. bin: | Triassic 2 |
| Key time interval: | Bithynian | Ammonoid zone: | hyatti |
| Age range of interval: | 245.5 - 244.7 m.y. ago |
Stratigraphy
| Formation: | Prida | Member: | Fossil Hill | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Mctaggarti subzone | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Secondary lithology: | lithified siltstone |
| Environment: | offshore indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float) |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collectors: | N.J. Silberling |
Metadata
| Database number: | 143220 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2013-04-20 14:39:06 | Last modified: | 2013-11-25 13:02:06 |
| Access level: | the public | Released: | 2013-04-20 14:39:06 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 10526. | N. J. Silberling and K. M. Nichols. 1982. Middle Triassic Molluscan Fossils of Biostratigraphic Significance from the Humboldt Range, Northwestern Nevada. Geological Survey Professional Paper 1207 [A. McGowan/A. McGowan/A. McGowan] |