CSUN 675: Ypresian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella buwaldana
Dickerson 1916
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Turritella andersoni
Dickerson 1916
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Gastropoda
- Ampullinidae
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Pachycrommium clarki
(Stewart 1927)
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Eocernina hannibali
(Dickerson 1914)
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Gastropoda
- Neogastropoda
- Volutidae
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Lyria andersoni
Waring 1917
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus cf. carlosensis
Anderson 1905
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Bivalvia
- Cardiida
- Veneridae
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Callista (Costacallista) hornii
(Gabb 1864)
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| "Callista (Costacallista) hornii vokesi" | ||||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia (Pacificor) sp.
Verástegui 1953
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Riverside |
| Coordinates: | 33.6° North, 115.7° West (view map) | ||||
| Paleocoordinates: | 36.0° North, 98.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 2120 feet | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Ypresian | Foram zone: | P7 - P8 |
| Age range of interval: | 56.00000 - 47.80000 m.y. ago |
Stratigraphy
| Formation: | Maniobra | ||||
| Regional section: | Formation | Regional bed: | 57 m | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Basal part of formation; Capay Stage; Foraminifera indicative of P7 to P9 Zones and calcareous nannofossils indicative of CP9 to CP11 Zones also have been found 58 m upsection from CSUN locality 662 (Advocate, 1983). | |||||
Lithology and environment
| Primary lithology: | "shale" |
| Lithology description: consists of siliciclastics that locally contain some macrofossils and microfossils. | |
| Environment: | submarine fan |
| Geology comments: These deposits represent a transitional marginal marine to deep-water submarine-fan sequence deposited in subtropical waters (Advocate, 1983). | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Specimens at CSUN | |
Metadata
| Also known as: | LACMIP 16151 | ||
| Database number: | 193547 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2018-05-26 17:21:27 | Last modified: | 2018-05-26 17:21:27 |
| Access level: | the public | Released: | 2018-05-26 17:21:27 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 65757. | R. L. Squires. 1991. Molluscan Paleontology of the Lower Eocene Maniobra Formation, Orocopia Mountains, Southern California. Eocene Geologic History San Diego Region, Pacific Section SEPM 68:217-226 [J. Marcot/J. Marcot] |