Fields Creek, OR123C: Ladinian, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Spumellaria
Spumellaria informal indet. A (Ehrenberg 1875)
Protozoa - Nassellaria
Nassellaria informal indet. B (Ehrenberg 1875)
Protozoa - Nassellaria - Ruesticyrtiidae
Yeharaia informal sp. A Nakaseko and Nishimura 1979
Yeharaia elegans Nakaseko and Nishimura 1979
Yeharaia aff. elegans Nakaseko and Nishimura 1979
Triassocampe informal sp. A Dumitrica et al. 1980
Triassocampe sulovensis Kozur and Mock 1981
? Triassocampe cf. pulchra Kozur and Mostler 1981
Protozoa - Nassellaria - Ultranaporidae
Silicarmiger informal sp. A Dumitrica et al. 1980
Protozoa - Entactinaria - Eptingiidae
Pylostephanidium informal sp. A Dumitrica 1978
Protozoa - Entactinaria
Radium informal sp. A Yeh 1989
Radium informal sp. B Yeh 1989
Radium pessagnoi n. gen., n. sp. Yeh 1989
Protozoa - Entactinaria - Hindeosphaeridae
Pseudostylosphaera informal sp. A Kozur and Mostler 1981
Pseudostylosphaera informal sp. B Kozur and Mostler 1981
Pseudostylosphaera informal sp. C Kozur and Mostler 1981
Pseudostylosphaera japonica (Nakaseko and Nishimura 1979)
Pseudostylosphaera magnispinosa n. sp. Yeh 1989
Parasepsagon informal sp. A Dumitrica et al. 1980
Parasepsagon informal sp. B Dumitrica et al. 1980
Parasepsagon variabilis (Nakaseko and Nishimura 1979)
see common names

Geography
Country:United States State/province:Oregon County:Grant
Coordinates: 44.3° North, 119.3° West (view map)
Paleocoordinates:11.0° North, 43.7° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Triassic Epoch:Middle Triassic
Stage:Ladinian 10 m.y. bin:Triassic 2
Key time interval:Ladinian
Age range of interval:242.00000 - 237.00000 m.y. ago
Stratigraphy
Geological group:Aldrich Mountains Formation:Fields Creek
Stratigraphic resolution:bed
Stratigraphy comments: near the base of the formation, Pseudostylosphaera magnispinosa assemblage
Lithology and environment
Primary lithology: lithified chert
Lithology description: black chert
Environment:basinal (siliceous)
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:96068
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:micropaleontology
Created:2010-05-12 05:50:51 Last modified:2010-05-12 08:50:51
Access level:the public Released:2010-05-12 05:50:51
Creative Commons license:CC BY
Reference information

Primary reference:
32609. K. Y. Yeh. 1989. Studies of Radiolaria from the Fields Creek Formation, east-central Oregon, USA. Bulletin of the National Museum of Natural Science 1:43-109 [W. Kiessling/U. Merkel]