Where: San Mateo County, California (37.2° N, 122.4° W: paleocoordinates 43.5° N, 92.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pigeon Point Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• Middle or early late Campanian

• group of beds-level stratigraphic resolution

Environment/lithology: submarine fan; lithified siliciclastic sediments

Size class: macrofossils

Collected by W.P. Elder in 1991; reposited in the USNM

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 185181: authorized by Matthew Clapham, entered by Matthew Clapham on 14.04.2017

Creative Commons license: CC BY (attribution)