UCLA loc. 5737, Wheeler Canyon, Inyo Mtns: Dyeran, California
collected by A. G. Sylvester 1965
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Salterellidae
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Volborthella tenuis
Schmidt 1888
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| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Inyo |
| Coordinates: | 37.0° North, 117.9° West (view map) | ||||
| Paleocoordinates: | 0.7° South, 95.6° West | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| 10 m.y. bin: | Cambrian 2-3 | ||
| *Period: | Early/Lower Cambrian - Middle Cambrian | *Epoch: | Caerfai |
| Key time interval: | Dyeran | ||
| Age range of interval: | 514.8 - 511 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Harkless | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Fossils found 10 feet stratigraphically above the top of a massive blue to buff-colored limestone bed that marks the top of the Poleta Formation. | |||||
Lithology and environment
| Primary lithology: | black lithified sandy siltstone |
| Lithology description: Dark grey, weakly laminated sandy siltstone that is composed cheifly of angular and subangular quartz grains and ragged laths of muscovite and biotite. Accessory minerals include zircon, magnetite, and tourmaline in small quantities. The laminations result from the alteration of quartz and mica rich layering which represent relic sedimentary layering that survived the metamorphism. | |
| Environment: | marine indet. |
| Geology comments: Area of study has undergone low-grade thermal metamorphism which resulted from the emplacement of a granitic pluton 1000 ft. west of the fossil locality. | |
Taphonomy
| Modes of preservation: | cast |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | LACM | ||
| Collectors: | A. G. Sylvester | Collection dates: | 1965 |
| Collection method comments: The walls of the Volborthella tenuis are composed of loosely-packed zircon, magnetite, and pyrite grains; with a few tourmaline grains. This suggests an organic process; most likely a worm-like organism or less likey a type of foraminifera. | |||
Metadata
| Also known as: | LACMIP loc. 25737 | ||
| Database number: | 9631 | ||
| Authorizer: | M. Patzkowsky | Enterer: | P. Borkow |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2001-03-23 08:36:55 | Last modified: | 2022-07-08 13:02:17 |
| Access level: | the public | Released: | 2001-03-23 08:36:55 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 839. | J. H. Lipps and A. G. Sylvester. 1968. The enigmatic Cambrian fossil Volborthella and its occurrence in California. Journal of Paleontology 42(2):329-336 [M. Patzkowsky/P. Borkow] |