upper 100 ft. of "Unit H" of Johnson and Hibbard 1957: Whiterockian, Nevada
collected by J. Ross, Jr.
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Euomphalina
- Macluritidae
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Maclurites sp.
Le Sueur 1818
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Palliseria sp.
Wilson 1924
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see common names |
Geography
Country: | United States | State/province: | Nevada | County: | Nye |
Coordinates: | 37.1° North, 116.5° West (view map) | ||||
Paleocoordinates: | 6.4° South, 82.2° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | small collection |
Time
Period: | Ordovician | ||
10 m.y. bin: | Ordovician 2-4 | ||
Key time interval: | Whiterockian | Brachiopod zone: | M? |
Age range of interval: | 470.00000 - 457.00000 m.y. ago |
Stratigraphy
Geological group: | Pogonip | Formation: | Antelope Valley | Member: | Unit H |
Local section: | Nevada Test Site | Local bed: | upper 100 ft. of "Unit H" of Johnson and Hibbard, 1957 ft | ||
Local order: | top to bottom | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Whiterockian. Unit H of Johnson and Hibbard, 1957 |
Lithology and environment
Primary lithology: | lithified "limestone" | ||
Lithology description: massive; oncolitic | |||
Environment: | shallow subtidal indet. | Tectonic setting: | passive margin |
Geology comments: carbonate platform |
Taphonomy
Modes of preservation: | body,replaced with silica |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (float),field collection |
Reason for describing collection: | biostratigraphic analysis |
Collectors: | J. Ross, Jr. |
Taxonomic list comments:Receptaculites? |
Metadata
Also known as: | SF 163 | ||
Database number: | 104304 | ||
Authorizer: | S. Finnegan | Enterer: | S. Finnegan |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2011-02-07 12:04:21 | Last modified: | 2023-09-05 17:22:32 |
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] |