D 1878 CO: Mohawkian, Nevada
collected by J. Ross, Jr.
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella sp.
Jones 1928
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Trilobita
- Asaphida
- Asaphidae
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Isotelus cf. gigas
(Dekay 1824)
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= Isotelus copenhagenensis
Ross and Shaw 1972
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Ross and Shaw 1972 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Eureka |
| Coordinates: | 39.2° North, 116.3° West (view map) | ||||
| Paleocoordinates: | 6.5° South, 77.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Mohawkian | Trilobite zone: | |
| Age range of interval: | 457.00000 - 451.10000 m.y. ago |
Stratigraphy
| Formation: | Copenhagen | Member: | C |
| Local section: | Antelope Valley Composite | Local bed: | 337 ft |
| Local order: | bottom to top | ||
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified siltstone | ||
| Lithology description: calcareous | |||
| Environment: | deep subtidal shelf | Tectonic setting: | passive margin |
| Geology comments: middle 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 210 | ||
| Database number: | 104495 | ||
| Authorizer: | S. Finnegan, M. Hopkins | Enterer: | S. Finnegan, M. Hopkins |
| Modifier: | S. Finnegan | Research group: | marine invertebrate |
| Created: | 2011-02-07 12:04:21 | Last modified: | 2011-04-01 12:12:42 |
| Access level: | the public | Released: | 2011-02-07 12:04:21 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 25411. | R. J., J.r. Ross. 1970. Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada. United States Geological Survey Professional Paper 639:1-99 [S. Finnegan/S. Finnegan/P. Wagner] |
Secondary references:
| 34728 | R. J., J.r. Ross and F. C. Shaw. 1972. Distribution of the Middle Ordovician Copenhagen Formation and its trilobites in Nevada. United States Geological Survey Professional Paper 749:1-33 [M. Hopkins/M. Hopkins/P. Wagner] |