Where: Grant County, Oregon (44.3° N, 119.3° W: paleocoordinates 11.0° N, 43.7° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Fields Creek Formation (Aldrich Mountains Group), Ladinian (242.0 - 237.0 Ma)
• near the base of the formation, Pseudostylosphaera magnispinosa assemblage
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified chert
Size class: microfossils
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 96068: authorized by Wolfgang Kiessling, entered by Uta Merkel on 12.05.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Parasepsagon "sp. A", Parasepsagon "sp. B", Parasepsagon variabilis, Pseudostylosphaera "sp. A", Pseudostylosphaera "sp. B", Pseudostylosphaera "sp. C", Pseudostylosphaera japonica, Pseudostylosphaera magnispinosa n. sp.
Parasepsagon "sp. A" Dumitrica et al. 1980 radiolarian
Parasepsagon "sp. B" Dumitrica et al. 1980 radiolarian
Parasepsagon variabilis Nakaseko and Nishimura 1979 radiolarian
Pseudostylosphaera "sp. A" Kozur and Mostler 1981 radiolarian
Pseudostylosphaera "sp. B" Kozur and Mostler 1981 radiolarian
Pseudostylosphaera "sp. C" Kozur and Mostler 1981 radiolarian
Pseudostylosphaera japonica Nakaseko and Nishimura 1979 radiolarian
Pseudostylosphaera magnispinosa n. sp. Yeh 1989 radiolarian | |
Pylostephanidium "sp. A" Dumitrica 1978 radiolarian | |
Radium "sp. A" Yeh 1989 radiolarian
Radium "sp. B" Yeh 1989 radiolarian
Radium pessagnoi n. gen. n. sp. Yeh 1989 radiolarian | |
Nassellaria "indet. B" radiolarian | |
Yeharaia "sp. A", Yeharaia elegans, Yeharaia aff. elegans, Triassocampe "sp. A", Triassocampe sulovensis, ? Triassocampe cf. pulchra
Yeharaia "sp. A" Nakaseko and Nishimura 1979 radiolarian
Yeharaia elegans Nakaseko and Nishimura 1979 radiolarian
Yeharaia aff. elegans Nakaseko and Nishimura 1979 radiolarian
Triassocampe "sp. A" Dumitrica et al. 1980 radiolarian
Triassocampe sulovensis Kozur and Mock 1981 radiolarian
? Triassocampe cf. pulchra Kozur and Mostler 1981 radiolarian | |
Silicarmiger "sp. A" Dumitrica et al. 1980 radiolarian | |
Spumellaria "indet. A" radiolarian |