USGS loc. D1024 CO, Mazourka Canyon, Inyo Mountains: Stairsian - Blackhillsian, California
collected by J. Ross, Jr.
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Asaphida
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Asaphida indet.
Salter 1864
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"Asaphid" | ||||||||||
Trilobita
- Asaphida
- Asaphidae
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? Trigonocerca sp.
Ross 1951
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large | ||||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Inyo |
Coordinates: | 36.9° North, 118.1° West (view map) | ||||
Paleocoordinates: | 3.7° South, 89.2° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | small collection |
Time
Period: | Ordovician | Epoch: | Early/Lower Ordovician |
Key time interval: | Stairsian - Blackhillsian | ||
Age range of interval: | 485.40000 - 471.80000 m.y. ago |
Stratigraphy
Formation: | Al Rose | ||||
Local section: | Northern Inyo Mountains, CA | Local bed: | 430 ft | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Ibexian |
Lithology and environment
Primary lithology: | lithified "shale" | ||
Lithology description: brown; sandy; interbedded w/ thin grey Ls beds | |||
Environment: | offshore shelf | Tectonic setting: | passive margin |
Geology comments: outer shelf |
Taphonomy
Modes of preservation: | body,replaced with silica |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | bulk,field collection |
Reason for describing collection: | biostratigraphic analysis |
Collectors: | J. Ross, Jr. |
Metadata
Also known as: | SF 3 | ||
Database number: | 104271 | ||
Authorizer: | S. Finnegan | Enterer: | S. Finnegan |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2011-02-07 12:04:21 | Last modified: | 2023-09-09 15:07:54 |
Access level: | the public | Released: | 2011-02-07 12:04:21 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
25410. | R. J. Ross, Jr. and C. R. Longwell. 1964. Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California. United States Geological Survey Bulletin 1180-C:C1-C101 [S. Finnegan/S. Finnegan/J. Marcot] |