Locality 5, Hillyard's Canyon, Zone "H", upper (Ordovician of the United States)

Where: Franklin County, Idaho (42.1° N, 111.6° W: paleocoordinates 7.9° S, 79.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Trigonocerca typica trilobite zone, Garden City Formation, Blackhillsian (478.6 - 471.8 Ma)

• 32 foot interval beginning 990 feet above base of formation. Occurs in uppermost part of Lower Member. Uppermost collection made in biozone "H" at this locality.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone and lithified conglomerate

• "Float-covered slope with low ledges of crystalline limestone and intraformational conglomerate protruding."

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 103796: authorized by Melanie Hopkins, entered by Melanie Hopkins on 02.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Trigonocerca typica Ross 1951 trilobite