Where: Tehama County, California (40.4° N, 122.5° W: paleocoordinates 41.6° N, 82.6° W)
• coordinate based on nearby landmark
• hand sample-level geographic resolution
When: Chickabally Member (Budden Canyon Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: basinal (); lithified, gray mudstone and lithified, concretionary limestone
Size class: microfossils
Preservation: original silica
Collection methods: chemical, hydroflouric,
Primary reference: 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]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 54069: authorized by Wolfgang Kiessling, entered by Martin Riess on 22.09.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
| Protozoa | |
|
Archaeodictyomitra simplex radiolarian
Archaeodictyomitra sliteri radiolarian
Thanarla praeveneta Pessagno 1977 radiolarian
Thanarla veneta Squinabol 1903 radiolarian | |
|
? Spongocapsula zamoraensis radiolarian | |
|
Holocryptocanium tuberculatum radiolarian | |
|
Xitus sp. Pessagno 1977 radiolarian | |
|
Pseudodictyomitra lodogaensis radiolarian
Pseudodictyomitra vestalensis radiolarian | |
|
Orbiculiforma maxima radiolarian | |
|
Archaeospongoprunum tehamaensis Pessagno 1973 radiolarian | |
|
Alievium antiquum radiolarian | |
|
Pyramispongia glascockensis radiolarian | |