Also known as UO 2563
Where: Polk County, Oregon (45.0° N, 123.2° W: paleocoordinates 45.3° N, 110.9° 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 39033: authorized by Austin Hendy, entered by Austin Hendy on 18.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Parvicardium eugenense Clark 1925 cockle | |
"Macoma aff. inquinata" = Macoma (Macoma) inquinata, Tellina pittsburgensis
"Macoma aff. inquinata" = Macoma (Macoma) inquinata Deshayes 1855 tellin clam
Tellina pittsburgensis Clark 1925 tellin clam | |
Diplodonta parilis Conrad 1848 clam | |
Pitar (Pitar) dalli, "Pitar (Lamelliconcha) clarki" = Lamelliconcha clarki, Macrocallista pittsburgensis
Pitar (Pitar) dalli Weaver 1916 venus clam
"Pitar (Lamelliconcha) clarki" = Lamelliconcha clarki Dickerson 1917 venus clam
Macrocallista pittsburgensis Dall 1900 venus clam | |
Solena (Eosolen) eugenensis Clark 1925 clam | |
"Thracia condoni" = Thracia (Cetothrax) condoni
"Thracia condoni" = Thracia (Cetothrax) condoni Dall 1909 clam | |
"Acila (Truncacila) nehalemensis" = Acila nehalemensis
"Acila (Truncacila) nehalemensis" = Acila nehalemensis Hanna 1924 divaricate nutclam Subspecies: Acila (Truncacila) nehalemensis nehalemensis
| |
Gastropoda | |
"Neverita thomsonae" = Glossaulax reclusiana
"Neverita thomsonae" = Glossaulax reclusiana Deshayes 1839 moon snail | |
"Bruclarkia columbianum" = Bruclarkia columbiana
"Bruclarkia columbianum" = Bruclarkia columbiana Anderson and Martin 1914 snail |