Where: Columbia County, Oregon (45.8° N, 123.2° W)
• Paleocoordinates: 50.4° N, 109.2° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Pittsburg Bluff Formation, Chattian (27.3 - 23.0 Ma)
• Upper part of Pittsburg Fm. The Pittsburg Bluff Formation conformably overlies the Keasey Formation (late Eocene and early Oligocene) and is conformably overlain by the Scappoose 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: offshore; poorly lithified, fine-grained, concretionary, gray sandstone
Size class: macrofossils
Reposited in the USGS
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 37691: authorized by Austin Hendy, entered by Austin Hendy on 20.03.2004, edited by Mark Uhen
Creative Commons license: CC0 (CC0)
Taxonomic list
Gastropoda | |
Acteon sp. n. sp., Acteon chehalisensis
Acteon sp. n. sp. Montfort 1810 snail
Acteon chehalisensis Weaver 1916 snail | |
Architectonica blanda Dall 1909 sundial | |
Opalia (? Dentiscala) hertleini Moore 1976 wentletrap | |
Polinices washingtonensis, "Cryptonatica pittsburgensis" = Neverita (Neverita) washingtonensis, "Neverita (Glossaulax) thomsonae" = Glossaulax reclusiana
Polinices washingtonensis Weaver 1916 moon snail
"Cryptonatica pittsburgensis" = Neverita (Neverita) washingtonensis Weaver 1916 moon snail
"Neverita (Glossaulax) thomsonae" = Glossaulax reclusiana Deshayes 1839 Recluz's moon snail | |
Priscofusus stewarti Tegland 1933 spindle shell
Perse pittsburgensis Durham 1944 snail | |
Bruclarkia columbiana Anderson and Martin 1914 snail
Eosiphonalia oregonensis Dall 1909 snail | |
Molopophorus gabbi Dall 1909 snail | |
"Spirotropis kincaidi" = Turricula kincaidi, "Parasyrinx kincaidi" = Turricula kincaidi
"Spirotropis kincaidi" = Turricula kincaidi Weaver 1916 snail
"Parasyrinx kincaidi" = Turricula kincaidi Weaver 1916 snail | |
Turritella pittsburgensis Moore 1976 turret shell | |
Scaphander stewarti Durham 1944 snail | |
Scaphopoda | |
Dentalium (? Fissidentalium) laneensis Hickman 1969 tusk shell | |
Bivalvia | |
Nucula (Leionucula) vokesi Moore 1976 nut clam
Acila (Truncacila) shumardi Dall 1909 divaricate nutclam | |
"Litorhadia washingtonensis" = Nuculana (Saccella) washingtonensis
"Litorhadia washingtonensis" = Nuculana (Saccella) washingtonensis Weaver 1916 pointed nut clam | |
Lucinoma columbiana Clark and Arnold 1923 clam | |
Spisula (? Mactromeris) veneriformis, "Spisula (Mactromeris) pittsburgensis" = Mactromeris pittsburgensis
Spisula (? Mactromeris) veneriformis Clark 1925 clam
"Spisula (Mactromeris) pittsburgensis" = Mactromeris pittsburgensis Clark 1925 clam | |
"Callista (Macrocallista) pittsburgensis" = Macrocallista pittsburgensis
"Callista (Macrocallista) pittsburgensis" = Macrocallista pittsburgensis Dall 1900 venus clam | |
? Tellina pittsburgensis Clark 1925 tellin clam
Tellina (Eurytellina) aduncanasa tellin clam | |
"Thracia (Thracia) condoni" = Thracia (Cetothrax) condoni
"Thracia (Thracia) condoni" = Thracia (Cetothrax) condoni Dall 1909 clam | |
Cochlodesma bainbridgensis Clark 1925 lantern shells | |
Solena (Eosolen) eugenensis Clark 1925 razor clams | |
Panopea ramonensis Clark 1925 clam |