Section 3, SM-86, Stanley Mountain, California: Late/Upper Tithonian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Spumellaria
- Angulobracchiidae
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Fluegelium inornata
Hull 1997
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rare category | ||||||
| recombined as Paronaella inornata | |||||||
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Protozoa
- Nassellaria
- Williriedellidae
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Complexapora kozuri
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abundant category | ||||||
| synonym of Zhamoidellum | |||||||
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Protozoa
- Nassellaria
- Eucyrtiidae
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Minocapsa horokanaiensis
(Kawabata 1988)
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rare category | ||||||
| recombined as Tetracapsa horokanaiensis | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California |
| Coordinates: | 35.1° North, 120.2° West (view map) | ||
| Paleocoordinates: | 30.5° North, 65.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | hand sample |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| Stage: | Tithonian | 10 m.y. bin: | Jurassic 6 |
| Key time interval: | Late/Upper Tithonian | ||
| Age range of interval: | 146.30000 - 145.00000 m.y. ago |
Stratigraphy
| Geological group: | Volcanopelagic Succession | Formation: | Unit 3 | ||
| Local section: | Section 3 | Local bed: | 133 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Zone 4 alpha - revision of chronostratigraphic assignment based on Baumgartner et al. (1995) and Kiessling et al. (1999) | |||||
Lithology and environment
| Primary lithology: | lithified argillaceous mudstone | ||
| Lithology description: clay-rich mudstone | |||
| Environment: | basinal (siliceous) | Tectonic setting: | deep ocean basin |
Taphonomy
| Modes of preservation: | body,original silica |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | good |
| 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 - rare, 1-2 specimens; common, 3-10 specimens; abundant, > 10 specimens | |
Metadata
| Database number: | 50753 | ||
| Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
| Modifier: | W. Kiessling | Research group: | micropaleontology |
| Created: | 2005-05-20 02:01:42 | Last modified: | 2005-05-20 05:32:44 |
| Access level: | the public | Released: | 2005-05-20 02:01:42 |
| 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] |