Where: San Juan County, Washington (48.8° N, 122.9° W: paleocoordinates 56.0° N, 88.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cedar District Formation, Middle Campanian (83.5 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by P. Ward in 1972; reposited in the UWBM

Primary reference: W. P. Elder and L. R. Saul. 1996. Taxonomy and biostratigraphy of Coniacian through Maastrichtian Anchura (Gastropoda; Aporrhaiidae) of the North American Pacific slope. Journal of Paleontology 70(3):381-399 [M. Patzkowsky/K. Layou/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185155: authorized by Matthew Clapham, entered by Matthew Clapham on 14.04.2017

Creative Commons license: CC BY (attribution)