USGS Cenozoic 15460, Tillamook Bay (Miocene of the United States)

Where: Tillamook County, Oregon (45.5° N, 123.9° W: paleocoordinates 45.3° N, 117.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Angora Peak Member (Astoria Formation), Burdigalian (20.4 - 16.0 Ma)

• Astoria Formation in coastal outcrops spans the late Early to early Middle Miocene, based on magnetostratigraphy (Prothero et al., 2001), but Aturia likely occurs in the lower part.

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; lithified sandstone

• Massive sandstone bluff is probably similar to jetty quarry deposits, which are likely sandstone type I of Cooper, representing shoreface sandstones

Size class: macrofossils

Collected by R.M. Grivetti in 1944; 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 180450: 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