Where: Cache County, Utah (41.8° N, 111.8° W: paleocoordinates 8.3° S, 76.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Swan Peak Formation, Chazyan (470.0 - 457.3 Ma)

• 7 foot interval 169 feet above base of formation.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, red, silty quartzite

Size class: macrofossils

Collected by R. J. Ross, Jr. in 1946-1947; reposited in the YPM

Primary reference: R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161 [S. Finnegan/S. Finnegan/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 103909: authorized by Melanie Hopkins, entered by Melanie Hopkins on 03.02.2011

Creative Commons license: CC BY (attribution)