Also known as Locality #167 (Moore, 1963); USGS 15320
Where: Lincoln County, Oregon (44.6° 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)
• Astoria Formation, overlying Nye Shale. 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 W.C. Warren, H.E. Vokes, D.C. Duncan, C.G. Duncan, 1944. 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 39801: authorized by Austin Hendy, entered by Austin Hendy on 06.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Astraea sp. n. sp.
Astraea sp. n. sp. Röding 1798 snail | |
Bruclarkia oregonensis Conrad 1848 snail | |
Ficus modesta Conrad 1848 fig shell | |
"Gyrineum" cf. dilleri triton shell | |
Cryptonatica oregonensis Conrad 1865 moon snail | |
Bivalvia | |
Crenella cf. porterensis Weaver 1916 clam | |
"Chione (Securella) ensifera" = Securella ensifera, Katherinella (Katherinella) angustifrons
"Chione (Securella) ensifera" = Securella ensifera Dall 1909 venus clam
Katherinella (Katherinella) angustifrons venus clam | |
"Spisula (Mactromeris) albaria" = Mactromeris albaria
"Spisula (Mactromeris) albaria" = Mactromeris albaria Conrad 1848 clam | |
"Tellina emacerata" = Tellina (Oudardia) emacerata, Macoma albaria, "Macoma arctata" = Macoma (Psammacoma) arctata
"Tellina emacerata" = Tellina (Oudardia) emacerata Conrad 1849 tellin clam
Macoma albaria Conrad 1849 tellin clam
"Macoma arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam | |
Acila (Truncacila) conradi Meek 1864 divaricate nutclam | |
Saccella calkinsi pointed nut clam |