Bed: D2707CO: Richmondian, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Phacopida
- Encrinuridae
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Encrinurus sp.
Emmrich 1844
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Trilobita
- Phacopida
- Pterygometopidae
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Calyptaulax sp.
Cooper 1930
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Trilobita
- Phacopida
- Calymenidae
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Calymenidae indet.
Milne-Edwards 1840
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Trilobita
- Proetida
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Proetida indet.
Fortey and Owens 1975
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Trilobita
- Proetida
- Otarionidae
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Otarion sp.
Zenker 1833
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Trilobita
- Asaphida
- Asaphidae
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Isotelus sp.
Dekay 1824
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Anataphrus sp.
Whittington 1954
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Trilobita
- Asaphida
- Remopleurididae
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Hypodicranotus sp.
Whittington 1952
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Trilobita
- Trinucleida
- Trinucleidae
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Cryptolithoides sp.
Whittington 1941
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Trilobita
- Odontopleurida
- Odontopleuridae
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Odontopleuridae indet.
Burmeister 1843
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Stenolaemata
- Cryptostomata
- Arthrostylidae
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Sceptropora sp.
Ulrich 1888
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Geography
| Country: | United States | State/province: | Nevada |
| Coordinates: | 39.0° North, 116.0° West (view map) | ||
| Paleocoordinates: | 7.1° South, 74.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | hand sample |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Richmondian | ||
| Age range of interval: | 449.80000 - 446.00000 m.y. ago |
Stratigraphy
| Formation: | Hanson Creek | Member: | Middle | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Listed as Middle Ashgillian; Middle Limestone and Dolomite | |||||
Lithology and environment
| Primary lithology: | concretionary lithified silty "limestone" |
| Lithology description: Nodular, silty, light-gray, mottled gray-orange limestone | |
| Environment: | deep subtidal shelf |
| Geology comments: Listed as Deep Mid-shelf | |
Taphonomy
| Modes of preservation: | body,trace,concretion |
| Size of fossils: | macrofossils,microfossils |
| Articulated whole bodies: | some |
| Fragmentation: | none |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Samples chosen at random | |
Metadata
| Database number: | 78051 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Subset of collection #: | 359 | ||
| Created: | 2008-01-25 08:59:16 | Last modified: | 2018-06-28 23:05:23 |
| Access level: | the public | Released: | 2008-01-25 08:59:16 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26322. | R. J. Ross, Jr., T. B. Nolan, and A.G. Harris. 1980. The Upper Ordovician and Silurian Hanson Creek Formation of central Nevada. United States Geological Survey Professional Paper (1126-A-J)C1-C22 [P. Novack-Gottshall/P. Hearn/R. McClees-Funinan] |