Where: Columbia County, Oregon (45.8° N, 123.2° W: paleocoordinates 45.5° N, 114.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Pittsburg Formation, Chattian (28.1 - 23.0 Ma)
• Near top of formation. The Pittsburg Bluff Formation conformably overlies the Keasey Formation (late Eocene and early Oligocene) and is conformably overlain by the Scappose Formation (late Oligocene and early Miocene). Parts of the formation are lithologically similar and therefore the stratigraphic position of exposures are sometimes uncertain. The estimated thickness for the entire formation is 200 ml the thickest continuous section of the formation is 100 m thick.
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, concretionary, gray sandstone
Size class: macrofossils
Reposited in the CAS, UCMP, UW
Collection methods: quarrying,
• Material housed in the USGS, Menlo Park. Also collections from UCMP, CAS, Stanford University (SU), University of Washington (UW), University of Oregon (UO), and the Academy of Natural Sciences of Philadelphia (ANSP)
Primary reference: E. J. Moore. 1976. Oligocene marine mollusks from the Pittsburg Bluff Formation in Oregon. United States Geological Survey Professional Paper 922:1-66 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 37694: authorized by Austin Hendy, entered by Austin Hendy on 21.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium (? Fissidentalium) laneensis Hickman 1969 tusk shell | |
Bivalvia | |
"Litorhadia washingtonensis" = Nuculana (Saccella) washingtonensis
"Litorhadia washingtonensis" = Nuculana (Saccella) washingtonensis Weaver 1916 pointed nut clam | |
Acila (Truncacila) shumardi Dall 1909 divaricate nutclam | |
Cochlodesma bainbridgensis Clark 1925 clam | |
Solena (Eosolen) eugenensis Clark 1925 clam
Solen townsendensis Clark 1925 clam | |
Panopea ramonensis Clark 1925 clam | |
"Callista (Macrocallista) pittsburgensis" = Macrocallista pittsburgensis
"Callista (Macrocallista) pittsburgensis" = Macrocallista pittsburgensis Dall 1900 venus clam | |
"Spisula (Mactromeris) pittsburgensis" = Mactromeris pittsburgensis
"Spisula (Mactromeris) pittsburgensis" = Mactromeris pittsburgensis Clark 1925 clam | |
Gastropoda | |
"Cryptonatica pittsburgensis" = Neverita (Neverita) washingtonensis
"Cryptonatica pittsburgensis" = Neverita (Neverita) washingtonensis Weaver 1916 moon snail | |
"Taranis columbiana" = Ptychosyrinx columbiana
"Taranis columbiana" = Ptychosyrinx columbiana Anderson and Martin 1914 turrid | |
"Spirotropis kincaidi" = Turricula kincaidi
"Spirotropis kincaidi" = Turricula kincaidi Weaver 1916 snail | |
Perse cf. pittsburgensis Durham 1944 snail | |
Bruclarkia columbiana Anderson and Martin 1914 snail | |
Scaphander stewarti Durham 1944 snail |