Where: Oregon (45.8° N, 125.3° W: paleocoordinates 39.9° N, 110.4° W)

• local area-level geographic resolution

When: Lower Middle Member (Keasey Formation), Priabonian to Priabonian (37.2 - 28.4 Ma)

• The formation overlies the Cowlitz formation and underlies thw Pittsburg Bluff formation. Both(?) contacts are conformable.

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray siltstone and mudstone

Preservation: cast

Collection methods: bulk, mechanical,

• Gastropods.

Primary reference: C. S. Hickman. 1980. Paleogene Marine Gastropods of the Keasey Formation in Oregon. Bulletins of American Paleontology 78(310):1-112 [L. Ivany/E. Kowalski] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7738: authorized by Linda Ivany, entered by Elizabeth Kowalski on 01.06.2000