CSUN 1581 [Wagonwheel Fm]: Priabonian, California
collected by R. Squires and M. Gring 1994
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Cardiida
- Vesicomyidae
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Vesicomya (Vesicomya) aff. tschudi
Olsson 1931
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| recombined as Archivesica tschudi | ||||||||||
| "Vesicomya (Vesicomya) aff. V. (V.) tschudi" | ||||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Epilucina washingtoniana
(Clark 1925)
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Bivalvia
- Lucinida
- Thyasiridae
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Conchocele bisecta
(Conrad 1849)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Kern |
| Coordinates: | 35.7° North, 120.0° West (view map) | ||||
| Paleocoordinates: | 34.7° North, 109.0° West |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Priabonian | Foram zone: | CP15b |
| Age range of interval: | 37.71000 - 33.90000 m.y. ago |
Stratigraphy
| Formation: | Wagonwheel | Member: | middle | ||
| Stratigraphy comments: Chron C15r-C13r
late early Refugian |
Lithology and environment
| Primary lithology: | lithified calcareous sandstone |
| Secondary lithology: | massive,bioturbation lithified muddy siltstone |
| Lithology description: "The calcareous sandstone bodies are each about 20 m in lateral extent and consist of closely spaced, triple-stacked discontinuous massive units separated by thin intervals of silty mudstone.... At a few places in the lower part of the calcareous sandstone body ... there are wavy-banded layers of cement and rip-up clasts (9 cm in length) of cross-bedded sandy limestone...." | |
| Environment: | submarine fan |
| Geology comments: "The taxonomic composition and low diversity (almost mono- specific) of the megafauna, as well as the dense concentration of articulated lucinid, thyasirid, and vesicomyid bivalves in isolated and anomalous carbonate-bearing deposits that have a petroliferous odor, are very similar to modern-day and Cenozoic examples of chemosynthetic communities associated with cool- fluid seepage" | |
Taphonomy
| Modes of preservation: | body,trace |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | many |
Collection methods and comments
| Collection excludes: | ichnofossils | ||
| Collection methods: | field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Collectors: | R. Squires and M. Gring | Collection dates: | 1994 |
Metadata
| Database number: | 193974 | ||
| Authorizer: | P. Holroyd | Enterer: | E. Orzechowski |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2018-06-08 18:29:39 | Last modified: | 2020-11-06 13:28:11 |
| Access level: | the public | Released: | 2018-06-08 18:29:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 65881. | R. L. Squires and M. P. Gring. 1996. Late Eocene chemosynthetic? bivalves from suspect cold seeps, Wagonwheel Mountain, central California. Journal of Paleontology 70(1):63-73 [P. Holroyd/E. Orzechowski/E. Orzechowski] |
Secondary references:
| 70365 | D. R. Prothero and J. Sutton. 2001. Magnetic stratigraphy of the Upper Eocene Wagonwheel Formation, Kern County, California. Pacific Section SEPM 91:136-143 [M. Uhen/M. Uhen] |