JO 62, Volcanopelagic succession, Josephine ophiolite: Late/Upper Bajocian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Xiphostylidae
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Tripocyclia sp.
Haeckel 1881
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abundant category | ||||||
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Xiphostylus sp.
Haeckel 1881
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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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Ristola sp.
Pessagno and Whalen 1982
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rare category | ||||||
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Protozoa
- Nassellaria
- Eucyrtidiellidae
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Eucyrtidiellum sp.
Baumgartner 1984
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rare category | ||||||
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Eucyrtidiellum aff. pustulatum
Baumgartner 1984
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rare category | ||||||
| synonym of Eucyrtidiellum unumaense | |||||||
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Protozoa
- Nassellaria
- Hsuidae
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Hsuum sp.
Pessagno 1977
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common category | ||||||
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Semihsuum sp.
Pessagno et al. 1993
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rare category | ||||||
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Protozoa
- Spumellaria
- Archaeospongoprunidae
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Archaeospongoprunum sp.
Pessagno 1973
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rare category | ||||||
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Protozoa
- Spumellaria
- Gomberellidae
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Bernoullius brokenkettlensis
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rare category | ||||||
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Bernoullius sp.
Baumgartner 1984
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rare category | ||||||
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Protozoa
- Spumellaria
- Pantanelliidae
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Pachyconus kamiasoensis
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rare category | ||||||
| original and current combination Pachyoncus | |||||||
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Pantanellium sp.
Pessagno 1977
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rare category | ||||||
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Pantanellium foveatum
Mizutani and Kido 1983
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rare category | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California |
| Coordinates: | 41.9° North, 123.8° West (view map) | ||
| Paleocoordinates: | 32.8° North, 63.6° 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: | Late/Upper Bajocian | ||
| Age range of interval: | 168.60000 - 168.20000 m.y. ago |
Stratigraphy
| Formation: | Josephine | Member: | Volcanopelagic Succession | ||
| Local section: | Middle Fork of Smith River | Local bed: | 12.1 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Zone 1I. Age re-assigned based on Baumgartner et al. (1995).
Informal Formation name. Stated as Volcanic member, Josephine Ophiolite | |||||
Lithology and environment
| Primary lithology: | lithified lime mudstone | ||
| Secondary lithology: | lithified chert | ||
| Includes fossils? | Y | ||
| Lithology description: Thin stringer of medium gray, micritic pelagic limestones interbedded with datk gray tuffaceous chert and mudstone | |||
| 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,hydrochloric,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 51641 | ||
| Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
| Modifier: | W. Kiessling | Research group: | micropaleontology |
| Created: | 2005-06-09 09:34:48 | Last modified: | 2005-06-09 12:34:49 |
| Access level: | the public | Released: | 2005-06-09 09:34:48 |
| 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] |