Dry Creek [lower Pacheco Group]: Cenomanian, California
collected by McCoy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Desmoceratidae
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Desmoceras (Latidorsella) inane
(Stoliczka 1865)
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| recombined as Desmoceras inane | |||||||
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Cephalopoda
- Ammonitida
- Acanthoceratidae
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Acanthoceras sp.
Neumayr 1875
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Cephalopoda
- Ammonitida
- Turrilitidae
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Turrilites bergeri
Brongniart 1822
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| recombined as Mariella (Mariella) bergeri | |||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Cyrtochilus stylus
Anderson 1958
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| synonym of Sciponoceras gracile | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Tehama |
| Coordinates: | 40.3° North, 122.4° West (view map) | ||||
| Paleocoordinates: | 41.5° North, 82.6° 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
| Geological group: | Pacheco | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: LITHOSTRATIGRAPHY: From the Pacheco Gp, for which lithostratigraphic relations are unknown. AGE: Cenomanian, on the basis of ammonoid biostratigraphy. STRATIGRAPHIC POSITION: From higher beds within the group. | |||||
Lithology and environment
| Primary lithology: | concretionary lithified sandstone |
| Includes fossils? | Y |
| Lithology description: LITHOLOGY: Buff concretionary sandstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | marine indet. |
| Geology comments: ENVIRONMENT: Siliciclastic marine setting. | |
Taphonomy
| Modes of preservation: | cast,mold/impression,concretion |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collectors: | McCoy |
| Collection method comments: COLLECTOR: McCoy, Benson, and Anderson. REPOSITORY: Not stated in text. | |
| Taxonomic list comments:COVERAGE: Not exhaustive, but representative for ammonoidea. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature. | |
Metadata
| Database number: | 83773 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-08-31 22:52:30 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-08-31 22:52:30 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11610. | F. M. Anderson. 1958. Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378 [A. Miller/A. Hendy/M. Clapham] |