Dry Creek, NSF 936: Early Cenomanian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Nassellaria
- Archaeodictyomitridae
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Protozoa
- Spumellaria
- Pseudoaulophacidae
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| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Tehama |
| Coordinates: | 40.4° North, 122.5° West (view map) | ||||
| Paleocoordinates: | 46.2° North, 80.3° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | hand sample |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Early Cenomanian | ||
| Age range of interval: | 100.5 - 93.9 m.y. ago |
Stratigraphy
| Formation: | Budden Canyon | Member: | Chickabally |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | gray lithified mudstone | ||
| Secondary lithology: | concretionary lithified "limestone" | ||
| Includes fossils? | Y | ||
| Lithology description: limestone (calcilutite) nodules in dark-gray mudstone | |||
| Environment: | basinal (siliciclastic) | Tectonic setting: | deep ocean basin |
Taphonomy
| Modes of preservation: | body,replaced with pyrite |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | excellent |
Collection methods and comments
| Collection methods: | chemical,hydrochloric,hydroflouric,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 54067 | ||
| Authorizer: | W. Kiessling | Enterer: | M. Riess |
| Modifier: | M. Carrano | Research group: | micropaleontology |
| Created: | 2005-09-22 06:52:07 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-09-22 06:52:07 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 14600. | E. Pessagno. 1977. Lower cretaceous radiolarian biostratigraphy of the Great Valley sequence and Franciscan complex, California coast ranges. Cushman Foundation for foraminiferal research, Special Publication (15)1-87 [W. Kiessling/M. Riess/M. Riess] |