Also known as UO 2558
Where: Marion County, Oregon (44.8° N, 123.0° W: paleocoordinates 45.1° N, 110.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Eugene Formation, Priabonian (38.0 - 33.9 Ma)
• Eugene Formation can be subdivided faunally: a lower unit correlating to the Keasey Fm, a middle unit correlating to the Gries Ranch Beds of WA, and a upper unit correlated with the Pittsburg Bluff Fm. Thickness of formation may be up to 15,000 feet, but probably around 5,000 feet. Most of the outcrops are scattered so it is difficult to estimate their relative stratigraphic placement
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, tuffaceous, brown, gray, blue sandstone and tuffaceous, brown, gray, blue siltstone
Size class: macrofossils
Preservation: mold/impression, trace
Reposited in the CAS
Collection methods: quarrying,
• Collections held at University of Oregon, University of California, Californian Academy of Sciences (CAS), United States Geological Survey (USGS), and Stanford University (NP).
Primary reference: C. J. S. Hickman. 1969. The Oligocene marine molluscan fauna of the Eugene Formation in Oregon. University of Oregon Museum of Natural History Bulletin 16:1-112 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39028: authorized by Austin Hendy, entered by Austin Hendy on 18.05.2004, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Modiolus eugenensis Clark 1925 mussel | |
Parvicardium eugenense, "Nemocardium (Nemocardium) formosum" = Anechinocardium formosum
Parvicardium eugenense Clark 1925 cockle
"Nemocardium (Nemocardium) formosum" = Anechinocardium formosum Hickman 1969 cockle | |
"Spisula eugenensis" = Mactromeris eugenensis
"Spisula eugenensis" = Mactromeris eugenensis Clark 1925 clam | |
"Acila (Truncacila) nehalemensis" = Acila nehalemensis
"Acila (Truncacila) nehalemensis" = Acila nehalemensis Hanna 1924 divaricate nutclam Subspecies: Acila (Truncacila) nehalemensis minima
| |
Gastropoda | |
"Neverita thomsonae" = Glossaulax reclusiana
"Neverita thomsonae" = Glossaulax reclusiana Deshayes 1839 moon snail | |
Bruclarkia vokesi snail | |
Procerapex bentsonae Durham 1944 turrid
Gemmula bentsonae Durham 1944 turrid | |
Crepidula ungana Dall 1908 slipper shell |