JO 90, Volcanic member Josephine ophiolite: Bajocian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Nassellaria
- Spongocapsulidae
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Spongocapsula sp.
Pessagno 1977
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rare category | ||||||
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Protozoa
- Nassellaria
- Parvicingulidae
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Praecaneta sp.
Pessagno et al. 1993
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common category | ||||||
| synonym of Praeparvicingula | |||||||
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Praecaneta decora
(Pessagno and Whalen 1982)
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common category | ||||||
| recombined as Praeparvicingula decora | |||||||
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Ristola sp.
Pessagno and Whalen 1982
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rare category | ||||||
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Protozoa
- Nassellaria
- Eucyrtidiidae
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Stichocapsa aff. convexa
Yao 1979
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rare category | ||||||
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Protozoa
- Nassellaria
- Williriedellidae
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Quarkus madstonensis
Pessagno et al. 1993
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common category | ||||||
| recombined as Williriedellum madstonense | |||||||
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? Tricolocapsa sp.
Haeckel 1881
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rare category | ||||||
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Protozoa
- Nassellaria
- Ultranaporidae
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Napora sp.
Pessagno 1977
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rare category | ||||||
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Protozoa
- Nassellaria
- Hsuidae
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Hsuum baldfacense
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rare category | ||||||
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Hsuum sp.
Pessagno 1977
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abundant category | ||||||
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Semihsuum sp.
Pessagno et al. 1993
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common category | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California |
| Coordinates: | 42.0° North, 123.8° West (view map) | ||
| Paleocoordinates: | 33.3° North, 63.9° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | hand sample |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Bajocian | 10 m.y. bin: | Jurassic 4 |
| Key time interval: | Bajocian | ||
| Age range of interval: | 170.90000 - 168.20000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | tuffaceous lithified chert | ||
| Includes fossils? | Y | ||
| Lithology description: Tuffaceous cherts within upper basalt member of Josephine Ophiolite | |||
| Environment: | basinal (siliceous) | Tectonic setting: | deep ocean basin |
| Geology comments: Smith River Subterrane | |||
Taphonomy
| Modes of preservation: | body,original silica |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection methods: | chemical,hydroflouric,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 51635 | ||
| Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
| Modifier: | W. Kiessling | Research group: | micropaleontology |
| Created: | 2005-06-09 09:18:04 | Last modified: | 2005-06-09 12:18:04 |
| Access level: | the public | Released: | 2005-06-09 09:18:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13738. | E. A. Pessagno, Jr., C. D. Blome, D. M. Hull and W. M. Six. 1993. Jurassic radiolaria from the Josephine ophiolite and overlying strata, Smith River subterrane (Klamath Mountains), northwestern California and southwestern Oreg. Micropaleontology 39:93-166 [W. Kiessling/W. Kiessling/J. Alroy] |