Locality 8, Clarkston Mountains, Zone "B" (Ordovician of the United States)

Where: Box Elder County, Utah (41.9° N, 112.1° W: paleocoordinates 7.0° S, 82.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bellefontia-Xenostegium trilobite zone, Garden City Formation, Gasconadian (485.4 - 477.7 Ma)

• Collection taken at 295 feet above base of formation

Environment/lithology: shallow subtidal; lithified, fine-grained limestone and lithified, intraclastic grainstone

• Collection taken from base of interval described as: "Thin (3-inch to 1-foot) interbeds of light gray, aphanitic limestone, finely crystalline limestone, and intraformational conglomerate in crystalline matrix".

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 103906: authorized by Melanie Hopkins, entered by Melanie Hopkins on 03.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Asaphida - Asaphidae
Bellefontia sp.
Bellefontia sp. Walcott 1924 trilobite
 Ptychopariida - Kingstoniidae
Clelandia utahensis
Clelandia utahensis Ross 1951 trilobite