UNSM "Green" Locality 1f: Montezuman, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Redlichiida
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Nevadia weeksi
(Walcott 1908)
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17 specimens | ||||||
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Trilobita
- Redlichiida
- Holmiidae
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Esmeraldina rowei
(Walcott 1910)
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200 specimens | ||||||
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? Esmeraldina cometes n. sp.
Fritz 1995
|
2 specimens | ||||||
| recombined as Montezumaspis cometes | |||||||
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Palmettaspis consorta n. gen., n. sp.
Fritz 1995
|
23 specimens | ||||||
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Esmeraldina lidensis n. sp.
Fritz 1995
|
51 specimens | ||||||
| recombined as Palmettaspis lidensis | |||||||
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Palmettaspis parallela n. sp.
Fritz 1995
|
14 specimens | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada |
| Coordinates: | 37.5° North, 117.5° West (view map) | ||
| Paleocoordinates: | 3.2° South, 97.0° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| Stage: | Stage 3 | 10 m.y. bin: | Cambrian 2 |
| Key time interval: | Montezuman | ||
| Age range of interval: | 519.90000 - 514.80000 m.y. ago |
Stratigraphy
| Formation: | Campito | Member: | Montenegro | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "Nevadella" Zone, "near the base of the Montenegro Member" | |||||
Lithology and environment
| Primary lithology: | argillaceous siltstone |
| Lithology description: "a thin interval located one or two meters above the top of" the "3-m-thick, white, fine-grained quartzite unit"; "matrix surroung the 1f fossils... consists of non-limey, argillaceous siltstone" | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collection method comments: specimen counts only apply to original USNM material of Walcott, although more material was collected by the author | |
| Taxonomic list comments:originally described by Walcott (1908)
additional fossils of the same zone were collected from nine GSC localities in the area, but almost none of them are detailed except GSC locs. 105368 (Esmeraldina rowei), 105371 (Nevadia weeksi), 105372 (Nevadia weeksi) | |
Metadata
| Database number: | 69466 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2007-02-26 21:49:37 | Last modified: | 2019-09-11 11:31:44 |
| Access level: | the public | Released: | 2007-02-26 21:49:37 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23331. | W. H. Fritz. 1995. Esmeraldina rowei and associated Lower Cambrian trilobites (1f fauna) at the base of Walcott's Waucoban Series, southern Great Basin, U.S.A. Journal of Paleontology 69(4):708-723 [J. Alroy/J. Alroy] |