Where: Douglas County, Oregon (42.8° N, 124.5° W: paleocoordinates 41.1° N, 73.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Myrtle Formation, Valanginian (139.8 - 132.9 Ma)
• STRATIGRAPHIC RELATIONS: From the Myrtle Fm. AGE: Valanginian, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From 119 ft above 3rd conglomerate in local section.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Preservation: cast, mold/impression
Collected by Diller in 1899; reposited in the USNM
Collection methods: surface (in situ),
• COLLECTORS: J.S. Diller, 1899. 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 83585: authorized by Austin Hendy, entered by Austin Hendy on 22.08.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
"Phyllopachyceras trinitense" = Phyllopachyceras infundibulum
"Phyllopachyceras trinitense" = Phyllopachyceras infundibulum d'Orbigny 1840 ammonite | |
Thurmanniceras cf. stippi Anderson 1938 ammonite |