Where: Oregon (43.2° N, 124.0° W: paleocoordinates 47.2° N, 105.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• 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: marine; lithified, concretionary siltstone

Size class: macrofossils

Collection methods: Repository: Condon Museum of Geology, a part of the University of Oregon Museum of Natural and Cultural History (CMNH)

Primary reference: E. P. Gustafson, T. Nyborg, and B. W. M. Bakel. 2019. A new genus and species of raninid crab, Doraranina manleyi (Decapoda: Raninoidea: Lyreididae) from the lower Eocene of Oregon. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 292(2):121-128 [M. Uhen/M. Uhen/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 226447: authorized by Matthew Clapham, entered by Rosa Valdez on 08.07.2022, edited by Matthew Clapham and Mark Uhen

Creative Commons license: CC BY (attribution)