Also known as I54-7-22A

Where: Douglas County, Oregon (43.3° N, 123.2° W: paleocoordinates 42.1° N, 71.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Myrtle Formation, Hauterivian (132.9 - 129.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Myrtle Fm. AGE: Hauterivian, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Imlay in 1954; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTORS: Imlay, Dole, and Peck, 1954. REPOSITORY: USNM, Washington DC.

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 83580: authorized by Austin Hendy, entered by Austin Hendy on 22.08.2008

Creative Commons license: CC BY (attribution)