CAS 69111 - Bald Hills Mbr, Budden Canyon Fm: Cenomanian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella xylina n. sp.
Squires and Saul 2006
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38 specimens | ||||||
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Gastropoda
- Pseudomelaniidae
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Paosia colusaensis
(Anderson 1958)
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Squires and Saul 2004 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Shasta |
| Coordinates: | 40.5° North, 122.6° West (view map) | ||||
| Paleocoordinates: | 41.6° North, 82.7° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Cenomanian | ||
| Age range of interval: | 100.50000 - 93.90000 m.y. ago |
Stratigraphy
| Formation: | Budden Canyon | Member: | Bald Hills | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Bald Hill Member of the Budden Canyon Formation. Further details published in Saul (1982) and Squires and Saul 2003, 2004). AGE: Cenomanian based on molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within member. | |||||
Lithology and environment
| Primary lithology: | lithified "siliciclastic" |
| Secondary lithology: | mudstone |
| Includes fossils? | Y |
| Lithology description: GENERAL LITHOLOGY: Lithology not stated, assumed to be siliciclastic based on figured specimens. LITHIFICATION: Assumed lithified based on figured specimens. | |
| Environment: | offshore |
| Geology comments: ENVIRONMENT: In general regarded as shallow water, though some units includes assemblages displaced into deeper waters through turbidity currents. Here assigned to a siliciclastic offshore environment on the basis of lithology. | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera,some macrofossils |
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | CAS |
| Collection method comments: COLLECTOR: P.U. Rodda (1955 or 1956). REPOSITORY: CAS, California. | |
| Taxonomic list comments:COVERAGE: Only includes Turritella (Gastropoda), therefore very limited. NOMENCLATURE: Authoritative publication with species-level assignments. | |
Metadata
| Database number: | 69622 | ||
| Authorizer: | A. Hendy, J. Marcot | Enterer: | A. Hendy, J. Marcot |
| Modifier: | M. Carrano | Research group: | marine invertebrate |
| Created: | 2007-02-28 08:04:22 | Last modified: | 2022-12-22 12:18:23 |
| Access level: | the public | Released: | 2007-02-28 08:04:22 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18617. | R. L. Squires and L. R. Saul. 2006. Additions and refinements to Aptian to Santonian (Cretaceous) Turritella (Mollusca: Gastropoda) from the Pacific Slope of North America. The Veliger 48(1):46-60 [A. Miller/A. Hendy] |
Secondary references:
| 76985 | R. L. Squires and L. R. Saul. 2004. The pseudomelaniid gastropod Paosia from the marine Cretaceous of the Pacific Slope of North America and a review of the age and paleobiogeography of the genus. Journal of Paleontology 78(3):484-500 [J. Marcot/J. Marcot] |