Where: Grant County, Oregon (44.1° N, 119.4° W: paleocoordinates 18.8° N, 55.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Rail Cabin Argillite Formation, Norian (228.0 - 208.5 Ma)
• 84.8 m above contact, (Late Carnian?)Early to late Middle Norian
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified, cherty/siliceous mudstone
• black siliceous mudstone
Size class: microfossils
Primary reference: C. D. Blome. 1983. Upper Triassic Capnuchosphaeridae and Capnodocinae (Radiolaria) from east-central Oregon. Micropaleontology 29(1):11-49 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 95134: authorized by Wolfgang Kiessling, entered by Uta Merkel on 07.04.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
• abundance data: rare: 1-2 specimens, common: 3-6 specimens, abundant: >6 specimens
Show authors, comments, and common names
Protozoa |
Entactinaria - Hindeosphaeridae |
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Spumellaria - Capnuchosphaeridae |
Sarla sp., Sarla externa, Sarla delicata, Capnuchosphaera sp., Capnuchosphaera sockensis, Capnuchosphaera soldierensis, Capnuchosphaera deweveri, Capnuchosphaera colemani, Capnuchosphaera schenki, Capnuchosphaera smithorum, Capnuchosphaera silviesensis, Catoma sp., Catoma inedita, Catoma geometrica, Catoma concinna
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Spumellaria - Hexaporobrachiidae |
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Spumellaria - Pantanelliidae |
Loffa sp., Loffa vesterensis, Loffa lepida, Renzium sp., Renzium adversum, Capnodoce sp., Capnodoce traversi, Capnodoce beaulieui, Capnodoce angusta, Capnodoce aff. anapetes, Capnodoce insueta, Capnodoce kochi, Capnodoce antiqua, Capnodoce minuscula, Capnodoce malaca, Capnodoce extenta, Capnodoce fragilis, Capnodoce sinuosa, Capnodoce baldiensis, Capnodoce copiosa, Capnodoce media
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