Also known as UO 2559
Where: Marion County, Oregon (44.9° N, 123.0° W: paleocoordinates 45.3° 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 39030: authorized by Austin Hendy, entered by Austin Hendy on 18.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Mytilus snohomishensis Weaver 1912 mussel | |
Parvicardium eugenense Clark 1925 cockle | |
Tellina aduncanasa tellin clam | |
Diplodonta parilis Conrad 1848 clam | |
Pitar (Pitar) dalli Weaver 1916 venus clam
Macrocallista pittsburgensis Dall 1900 venus clam | |
"Spisula pittsburgensis" = Mactromeris pittsburgensis
"Spisula pittsburgensis" = Mactromeris pittsburgensis Clark 1925 clam | |
Solen sicarius Gould 1850 clam
Solena (Eosolen) eugenensis Clark 1925 clam | |
"Panopea (Panopea) ramonensis" = Panopea ramonensis
"Panopea (Panopea) ramonensis" = Panopea ramonensis Clark 1925 clam | |
"Nuculana washingtonensis" = Nuculana (Saccella) washingtonensis
"Nuculana washingtonensis" = Nuculana (Saccella) washingtonensis Weaver 1916 pointed nut clam | |
Yoldia (Kalayoldia) oregona Shumard 1858 clam | |
Acila (Truncacila) shumardi Dall 1909 divaricate nutclam | |
Gastropoda | |
Scaphander stewarti Durham 1944 snail | |
Natica (Natica) sp. n. sp., "Neverita thomsonae" = Glossaulax reclusiana
Natica (Natica) sp. n. sp. Scopoli 1777 moon snail
"Neverita thomsonae" = Glossaulax reclusiana Deshayes 1839 moon snail |