LACMIP 17850, Elsmere Canyon [Juncal Fm]: Early/Lower Eocene, California
collected by Squires and Walker 2006
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Opisthobranchia
- Retusidae
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Cylichnina tantilla
(Anderson and Hanna 1925)
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F category | ||||||
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Gastropoda
- Neogastropoda
- Clavatulidae
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Turricula sp.
Schumacher 1817
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R category | ||||||
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Gastropoda
- Heterostropha
- Acteonidae
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? Acteon sp.
Montfort 1810
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C category | ||||||
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Bivalvia
- Cardiida
- Tellinidae
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? Tellina sp.
Linnaeus 1758
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R category | ||||||
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Bivalvia
- Pholadida
- Teredinidae
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Teredinidae indet.
Rafinesque 1815
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F category | ||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula (Caryocorbula) dickersoni
(Weaver and Palmer 1922)
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R category | ||||||
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Bivalvia
- Mytilida
- Mytilidae
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Brachidontes (Brachidontes) cowlitzensis
(Weaver and Palmer 1922)
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R category | ||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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R category | ||||||
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Bivalvia
- Pectinida
- Propeamussiidae
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Parvamussium sp.
(Sacco 1897)
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F category | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Los Angeles |
| Coordinates: | 34.4° North, 118.5° West (view map) | ||||
| Paleocoordinates: | 36.9° North, 101.5° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 1560 feet | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Early/Lower Eocene | ||
| Age range of interval: | 56.00000 - 47.80000 m.y. ago |
Stratigraphy
| Formation: | Juncal | ||||
| Local section: | Elsmere Canyon | Local bed: | 65 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Juncal Fm, which unconformably overlies pre-Tertiary gneiss and granitic basement, and is overlain by the Towsley Fm (Pliocene). AGE: late Early Eocene, on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From near the base of the section. | |||||
Lithology and environment
| Primary lithology: | lithified conglomeratic sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Thin lens of sandstone in siltstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | submarine fan |
| Geology comments: ENVIRONMENT: Shallow water marine assemblage redeposited into deeper water, associated with submarine fan environment. | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | LACM | ||
| Collectors: | Squires and Walker | Collection dates: | 2006 |
| Collection method comments: COLLECTOR: R. Squires, and S. Walker, 2006. REPOSITORY: LACMIP, Los Angeles. | |||
| Taxonomic list comments:COVERAGE: Exhaustive for mollusca. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. | |||
Metadata
| Database number: | 111554 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy, K. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2011-06-25 14:04:28 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2011-06-25 14:04:28 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 36513. | R. L. Squires. 2008. Eocene megapaleontology, stratigraphy, and depositional environments, Elsmere Canyon, Los Angeles County, California. Contributions in Science (517)1-16 [A. Hendy/A. Hendy] |