JO 6, Volcanopelagic succession, Josephine ophiolite: Late/Upper Bajocian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Spumellaria - Archaeospongoprunidae
Archaeospongoprunum sp. Pessagno 1973
rare category
Protozoa - Spumellaria - Angulobracchiidae
Paronaella sp. Pessagno 1971
rare category
Protozoa - Spumellaria - Pantanelliidae
Pachyconus kamiasoensis
rare category
original and current combination Pachyoncus
Pantanellium sp. Pessagno 1977
common category
Pantanellium foveatum Mizutani and Kido 1983
common category
Protozoa - Spumellaria - Emiluviidae
Emiluvia sp. Foreman 1973
common category
Protozoa - Entactinaria - Saturnalidae
Acanthocircus sp. Squinabol 1903
rare category
Acanthocircus suboblongus (Yao 1972)
rare category
Protozoa - Entactinaria - Eptingiidae
Perispyridium sp. Dumitrica 1978
rare category
Perispyridium gujohachimanense Takemura 1986
rare category
Protozoa - Nassellaria - Hsuidae
Hsuum sp. Pessagno 1977
common category
Semihsuum sp. Pessagno et al. 1993
rare category
Protozoa - Nassellaria - Parvicingulidae
Praecaneta sp. Pessagno et al. 1993
common category
synonym of Praeparvicingula
rare category
Protozoa - Nassellaria - Ultranaporidae
Napora sp. Pessagno 1977
rare category
Protozoa - Xiphostylidae
Tripocyclia spp.
Pessagno et al. 1989 rare category
Xiphostylus sp. Haeckel 1881
Pessagno et al. 1989 rare category
Archaeocenosphaera spp.
Pessagno et al. 1989 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:4.1 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:planar lamination,tuffaceous,black lithified chert
Includes fossils?Y
Lithology description: Black laminated tuffaceous chert of cherty tuff
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:51639
Authorizer:W. Kiessling, J. Pálfy Enterer:W. Kiessling, A. Kocsis
Modifier:W. Kiessling Research group:micropaleontology
Created:2005-06-09 09:31:28 Last modified:2005-06-09 12:31:28
Access level:the public Released:2005-06-09 09:31:27
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]

Secondary references:

41432 E. Pessagno, W. M. Six, and Q. Yang. 1989. The Xiphostylidae Haeckel and Parvivaccidae, n. fam, (Radiolaria) from the North American Jurassic. Micropaleontology 35(3):193-255 [J. Pálfy/A. Kocsis]