USGS Cenozoic 18905, Yaquina Head (Miocene of the United States)

Where: Lincoln County, Oregon (44.7° N, 124.1° W: paleocoordinates 44.5° N, 118.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Newport Sandstone Member (Astoria Formation), Burdigalian (20.4 - 16.0 Ma)

• Section south of Yaquina Head assigned to late Early Miocene based on magnetostratigraphy (Prothero et al., 2001).

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified shale

• Dominated by middle to outer shelf siliciclastic sandy-mud facies. Estimated absolute water depths are ~25 m based on the molluscan fauna and <150 m based on the benthic foraminifera fauna. Hummocky cross-stratification preserved in tuff beds and in mud capped sandy beds are found at stratigraphic levels throughout the section, further supporting deposition in shelf water depths, specifically between the lower shoreface and storm wave base.

Size class: macrofossils

Collected by M.P. James in 1953; reposited in the USNM

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 180451: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Aturiidae
Aturia angustata
Aturia angustata Conrad 1849 nautiloid