Silverado Canyon Cerithium-Parallelodon Association: Turonian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Scaphopoda
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Dentalium whiteavesi
Anderson and Hanna 1935
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Bivalvia
- Arcida
- Parallelodontidae
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Parallelodon sp.
Meek and Worthen 1866
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| "sp. A" | ||||||||||
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Subprionocyclus sp.
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Gastropoda
- Aporrhaidae
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Anchura condoniana
Anderson 1902
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= Anchura (Helicaulax) tricosa
Saul and Popenoe 1993
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Saul and Popenoe 1993 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Orange |
| Coordinates: | 33.8° North, 117.7° West (view map) | ||||
| Paleocoordinates: | 34.7° North, 81.4° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Turonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Turonian | ||
| Age range of interval: | 93.9 - 89.8 m.y. ago |
Stratigraphy
| Formation: | Ladd | Member: | Holz Shale | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: from "about 1 m of strata" | |||||
Lithology and environment
| Primary lithology: | lithified siltstone |
| Secondary lithology: | lithified "shale" |
| Lithology description: "Brown to gray siltstone and shale with interbedded lenses of stringers of limestone, conglomerate, and sandstone" apparently well lithified because strata were "broken" and "disarticulated" during collection | |
| Environment: | interdistributary bay |
| Geology comments: "in normal marine waters at shallow depth (20 m or less if marine grasses were present)" the Holz Shale in general is "in a shallow marine setting, including prodelta, lagoonal and bay environments" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,surface (in situ),field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: "Bulk samples were collected... and brought back to the lab for disarticulation" but there was also "selective collecting, by breaking the strata at the site"
collections apparently are at the California State University at Fullerton | |
Metadata
| Also known as: | Locality 14e | ||
| Database number: | 80938 | ||
| Authorizer: | J. Alroy, J. Marcot | Enterer: | J. Alroy, J. Marcot |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2008-05-21 21:37:49 | Last modified: | 2008-05-22 13:51:36 |
| Access level: | the public | Released: | 2008-05-21 21:37:49 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 27237. | F. A. Sundberg. 1980. Late Cretaceous paleoecology of the Holz Shale, Orange County, California. Journal of Paleontology 54(4):840-857 [J. Alroy/J. Alroy] |
Secondary references:
| 63343 | L. R. Saul and W. P. Popenoe. 1993. Additions to Pacific slope Turonian Gastropoda. The Veliger 36(4):351-388 [P. Wagner/P. Wagner] |