WP-1, Westgard Pass [Upper Poleta Fm]: Dyeran, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Helicoplacoidea
- Helicoplacidae
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Waucobella nelsoni
Durham 1967
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Wilbur 2006 | ||||||
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Helicoplacus gilberti
Durham and Caster 1963
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Wilbur 2006 | ||||||
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Polyplacus kilmeri
Durham 1967
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Wilbur 2006 | ||||||
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Eocrinoidea
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Eocrinoidea indet.
Jaekel 1918
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| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Inyo |
| Coordinates: | 37.3° North, 118.2° West (view map) | ||||
| Paleocoordinates: | 0.1° North, 97.1° West | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| 10 m.y. bin: | Cambrian 2-3 | ||
| Key time interval: | Dyeran | Trilobite zone: | Nevadella - Holmia |
| Age range of interval: | 514.8 - 511 m.y. ago | ||
| Age estimate: | 518.4 to 515.4 Ma (unknown) |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified calcareous mudstone | ||
| Environment: | offshore indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | mold/impression |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | selective quarrying,surface (float),surface (in situ) |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | LACM,TMM,UCMP,USNM |
Metadata
| Database number: | 90625 | ||
| Authorizer: | A. Lin | Enterer: | A. Lin |
| Modifier: | P. Novack-Gottshall | Research group: | marine invertebrate |
| Created: | 2009-08-11 10:29:44 | Last modified: | 2024-06-01 06:10:57 |
| Access level: | the public | Released: | 2009-08-11 10:29:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 22459. | J. Sprinkle. 1973. Morphology and evolution of blastozoan echinoderms. Harvard University Museum of Comparative Zoology, Special Publication 1-283 [G. Webster/G. Webster/P. Wagner] |
Secondary references:
| 30495 | B. C. Wilbur. 2006. Reduction in the number of Early Cambrian helicoplacoid species. Palaeoworld 15:283-293 [A. Lin/A. Lin/A. Lin] |