Where: Douglas County, Oregon (43.3° N, 123.1° W)

• Paleocoordinates: 51.1° N, 94.4° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: P8 foram zone, Tenmile Member (Lookingglass Formation), Ypresian (56.0 - 47.8 Ma)

• Originally "middle Eocene." Recent studies by Prothero (2009) on the magnetic stratigraphy, combined with the occurrence of P8 planktonic foraminifera Zone and NP12/CP10 nannofossil Zone, constrain the age estimates of the formations within the Umpqua Group to 52.3-47 Ma, with the early Eocene Lookingglass Formation assigned an age of 49.8-50.8 Ma.

• group of beds-level stratigraphic resolution

Environment/lithology: submarine fan; lithified, concretionary siltstone

Size class: macrofossils

Preservation: concretion

Collection methods: Repository: University of Oregon Museum of Natural History

Primary reference: E. P. Gustafson. 2023. The Early Eocene decapod crustacean fauna of the Lookingglass Formation, Oregon. The Bulletin of the Museum of Natural History of the University of Oregon 31:1-45more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 237939: authorized by Matthew Clapham, entered by Matthew Clapham on 21.12.2024

Creative Commons license: CC0 (CC0)