Where: Oregon (42.9° N, 123.4° W: paleocoordinates 41.8° N, 72.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hauterivian (132.9 - 129.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by G.F. Becker in 1890; reposited in the USNM

Primary reference: R. W. Imlay. 1960. Ammonites of Early Cretaceous age (Valanginian and Hauterivian) from the Pacific Coast states. United States Geological Survey Professional Paper 334(F):1-228 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157773: authorized by Matthew Clapham, entered by Matthew Clapham on 02.07.2014

Creative Commons license: CC BY (attribution)