Swasey Spring [Wheeler Fm]: Middle Cambrian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Radiodonta
- Anomalocarididae
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Anomalocarididae indet.
Raymond 1935
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah | County: | Millard |
| Coordinates: | 39.4° North, 113.3° West (view map) | ||||
| Paleocoordinates: | 4.3° South, 91.7° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 3-4 | ||
| Key time interval: | Middle Cambrian | ||
| Age range of interval: | 509.00000 - 497.00000 m.y. ago |
Stratigraphy
| Formation: | Wheeler | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Wheeler Fm. Stratigraphic relations are not discussed in text. AGE: Middle Cambrian. Justification not stated in text. STRATIGRAPHIC POSITION: From unknown position within the formation. | |||||
Lithology and environment
| Primary lithology: | planar lamination lithified mudstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Finely laminated mudstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | deep subtidal ramp |
| Geology comments: ENVIRONMENT: Deposited in localized embayment below storm wave base, in basinal a environment, on the distal end of a carbonate ramp. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression,soft parts |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Articulated whole bodies: | some |
Collection methods and comments
| Collection excludes: | difficult macrofossils |
| Collection methods: | surface (in situ),field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | ROM,USNM,YPM |
| Collection method comments: COLLECTORS: Unknown, but possibly including B.S. Liverman, D.E. Briggs, S.L. Halgedahl, and R.J Jarrard. REPOSITORIES: KUMIP (Kansas), ROM (Ontario), USNM (Washington), UU (Utah), YPM (Yale). | |
| Taxonomic list comments:COVERAGE: Only includes those taxa systematically discussed in publication. NOMENCLATURE: Authoritative publication with modern nomenclature and use of species-resolution assignments. | |
Metadata
| Database number: | 80126 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-04-06 09:06:05 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-04-06 09:06:04 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26947. | D. E. G. Briggs, B. S. Lieberman, J. R. Hendricks, S. L. Halgedahl, and R. D. Jarrard. 2008. Middle Cambrian arthropods from Utah. Journal of Paleontology 82(2):238-254 [A. Hendy/A. Hendy] |