Also known as Locality #120 (Moore, 1963); USGS 18872
Where: Lincoln County, Oregon (44.7° N, 124.1° W: paleocoordinates 44.5° N, 119.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Astoria Formation, Langhian (16.0 - 13.8 Ma)
• From 1-2 ft of extremely fossiliferous siltstone, about 45 ft above base of exposed section in beach cliffs. From an unknown horizon. Astoria Formation has been used as a name for almost all of the marine middle Miocene sedimentary rocks of Washington and Oregon although these correlations are poorly constrained. The formation has been divided into three members: a lower sandstone, a shale, and an upper sandstone. These rocks form the northern limb of a syncline, the asis of which is exposed east of Astoria, and the syncline trends NE and plunges to the SW. The Astoria Formation is intermittently exposed; theya re faulted and exposures are interupted by volcanic rocks and slides. The maximum thickness of any exposure is 25 feet.
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, concretionary, silty, calcareous shale and fine-grained, concretionary, silty, calcareous sandstone
Size class: macrofossils
Preservation: concretion, replaced with other
Reposited in the CAS, USNM
Collection methods: quarrying, surface (float),
• Collected by E.J. Moore, 1952. Collections reside in the Californian Academy of Sciences, the U.S. National Museum, and presumably the USGS.
Primary reference: E. J. Moore. 1963. Miocene marine mollusks from the Astoria Formation in Oregon. United States Geological Survey Professional Paper 419 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39698: authorized by Austin Hendy, entered by Austin Hendy on 03.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Crepidula praerupta Conrad 1849 slipper shell | |
Sinum scopulosum Conrad 1849 moon snail
"Polinices canalis" = Polinices (Euspira) lincolnensis Weaver 1916 moon snail
Cryptonatica oregonensis Conrad 1865 moon snail | |
Ficus modesta Conrad 1848 fig shell | |
Bruclarkia oregonensis Conrad 1848 snail | |
? Searlesia carlsoni Anderson and Martin 1914 true whelk | |
Spirotropis cf. washingtonensis Etherington 1931 snail | |
Bivalvia | |
Saccella calkinsi Moore 1963 pointed nut clam | |
Yoldia sp. n. sp.
Yoldia sp. n. sp. Möller 1842 clam | |
Acila (Truncacila) conradi Meek 1864 divaricate nutclam | |
"Panope (Panope) abrupta" = Panopea abrupta
"Panope (Panope) abrupta" = Panopea abrupta Conrad 1849 clam | |
"Solen conradi" = Solena (Plectosolen) conradi
"Solen conradi" = Solena (Plectosolen) conradi Dall 1900 clam | |
Katherinella (Katherinella) angustifrons Conrad 1849 venus clam | |
"Macoma arctata" = Macoma (Psammacoma) arctata, Macoma albaria, "Tellina emacerata" = Tellina (Oudardia) emacerata
"Macoma arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
Macoma albaria Conrad 1849 tellin clam
"Tellina emacerata" = Tellina (Oudardia) emacerata Conrad 1849 tellin clam | |
Lucinoma acutilineata Conrad 1849 clam | |
Anadara (Anadara) devincta Conrad 1849 ark |