Section 1, SA-29, Stanley Mountain, California: Callovian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Nassellaria
- Archaeodictyomitridae
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Archaeodictyomitra inornata
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abundant category | ||||||
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Protozoa
- Nassellaria
- Williriedellidae
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Williriedellum carpathicum
Dumitrica 1970
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abundant category | ||||||
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? Zhamoidellum exquisita
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rare category | ||||||
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Protozoa
- Nassellaria
- Eucyrtidiellidae
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Eucyrtidiellum takemurai
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common category | ||||||
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Eucyrtidiellum ptyctum
(Riedel and Sanfilippo 1974)
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common category | ||||||
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Protozoa
- Nassellaria
- Spongocapsulidae
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Spongocapsula hooveri
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common category | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California |
| Coordinates: | 35.1° North, 120.2° West (view map) | ||
| Paleocoordinates: | 28.7° North, 61.2° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | hand sample |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Callovian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Callovian | ||
| Age range of interval: | 165.30000 - 161.50000 m.y. ago |
Stratigraphy
| Geological group: | Volcanopelagic Succession | Formation: | Unit 1 | ||
| Local section: | Section 1 | Local bed: | 58.5 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Zone 2 beta - revision of chronostratigraphic assignment based on Baumgartner et al. (1995) and Kiessling et al. (1999) | |||||
Lithology and environment
| Primary lithology: | tuffaceous lithified chert | ||
| Lithology description: Thin-bedded, dark gray, suffaceous chert | |||
| Environment: | basinal (siliceous) | Tectonic setting: | deep ocean basin |
Taphonomy
| Modes of preservation: | body,original silica |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | medium |
| Abundance in sediment: | few |
Collection methods and comments
| Collection methods: | bulk,hydrochloric,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Radiolarians only | |
Metadata
| Database number: | 50739 | ||
| Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
| Modifier: | W. Kiessling | Research group: | micropaleontology |
| Created: | 2005-05-20 01:16:58 | Last modified: | 2005-05-20 04:20:18 |
| Access level: | the public | Released: | 2005-05-20 01:16:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13552. | D. M. Hull. 1997. Upper Jurassic Tethyan and Southern Boreal radiolarians from western North America. Micropaleontology 43(S2):1-202 [W. Kiessling/W. Kiessling/M. Uhen] |